Clean Energy Patent Growth Index

CLEAN ENERGY PATENT GROWTH INDEX 2nd Quarter 2009

The CLEAN ENERGY PATENT GROWTH INDEX (CEPGI), published quarterly by the Cleantech Group at Heslin Rothenberg Farley & Mesiti P.C. provides an indication of the trend of innovative activity in the Clean Energy sector.  Results from the second quarter of 2009 reveal the CEPGI to have a value of 274 granted U.S. patents which is the highest quarterly value since the tracking of the CEPGI began, along with being up 31 from the first quarter of 2009 and up from a value of 217 in the second quarter of 2008.

(Download CEPGI 2d quarter 2009)

The granting of patents by the United States Patent and Trademark (PTO) is often cited as a measure of the inventive activity and evidence of the effectiveness of research & development investments. Patents are considered to be such an indicator, because to be awarded a patent, it requires not only the efforts of inventors to develop new and non-obvious innovations but also successful handling by patent counsel to shepherd a patent application through the PTO. Thus, the granting of a patent is an indicator that efforts at innovation have been successful and that an innovation had enough perceived value to justify the time and expense in procuring the patent.

The CEPGI (shown below quarterly) tracks the granting of U.S. patents for the following sub-components: Solar, Wind, Hybrid/electric vehicles, Fuel Cells, Hydroelectric, Tidal/wave, Geothermal, Biomass/biofuels and other clean renewable energy.

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The components breakdown of the CEPGI shows fuel cells returning to positive territory with 156 granted patents, up 23 relative to the first quarter and up 42 relative to the second quarter of 2008. Fuel cell patents also continue to dominate the other components in absolute numbers. Granted wind and solar patents continued their ascent with wind outpacing solar by 7. Wind (43) patents were up 9 relative to the first quarter and down 5 compared to a year prior. Solar patents (36) were up 6 compared to the first quarter and up 15 relative the second quarter of 2008. Hybrid/electric vehicle patents (20) dipped 10 from the first quarter ending a three quarter streak of gains and were up 6 compared to the same period in 2008. Biofuel patents reached an all time quarterly high at 13 and were up 2 relative to the first quarter and up 8 over a year before. Geothermal patents (2) tied the first quarter of this year and the second quarter of 2008. Also, tidal/wave energy granted patents (8) were up 2 over the first quarter and down 2 compared to the same period of the year before.

Honda again took the Clean Energy Patent crown for the second quarter in a row primarily based on its fuel cell (14) and hybrid/electric vehicle (3) patents. GM was the runner-up with 15 granted clean energy patents in both the fuel cell (12) and hybrid/electric vehicle (3) sectors. Toyota trailed GM by three and also had granted fuel cell (7) and hybrid/electric vehicle (5) patents. GE placed fourth on the strength of its wind patents (9) with an assist from fuel cells (2). Nissan moved from 10th in the last quarter to fifth with nine fuel cell patents. Panasonic Corp. followed with 5 patents (5 fuel cells) adding to its 12 patents in the first quarter, while only having 6 in the entire seven-year period from 2002-2008. Ford added five fuel cell patents while Daimler added 4. Aloys Wobben of Enercon GmbH had 4 wind patents. Applied Materials was granted 3 solar patents which were its first granted Clean Energy patents. Bloom Energy Corporation ( previously named Ion America) was granted 3 Fuel cell patents in the second quarter and has 16 earlier fuel cell patents.

As depicted below, Japan led the geographic areas tracked with 75 granted clean energy patents (up 3 relative to the second quarter and up 10 over 2008) to again claim the geographical clean energy patent crown. California was second with 29 granted Clean Energy patents, up 10 over the first quarter and up 9 over the second quarter of 2008. Michigan (up 5 over the first quarter and up 9 over the same period in 2008) and Germany (up 4 over the first quarter and up 6 over 2008) tied for third at 23 granted patents. New York had 15 patents dominated by wind (9) and fuel cells (5), and was up 2 over the first quarter and down 5 over the same period of 2008. Korea (up 6 over the first quarter and 7 over 2008) tied New York at 15 clean energy patents while Canada had 7 patents to tie its first quarter results and up one over the second quarter of last year. Connecticut trailed Canada with 6 granted clean energy patents but improved on its two patents in the first quarter and 4 from the second quarter of 2008.

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Trend lines by quarter through the 2d quarter of 2009 for the CEPGI and for each of the CEPGI components are depicted below:

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CEPGI yearly totals through 2008 are depicted below:

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Please contact us at info@cleanenergypatentgrowthindex.com if you have any questions or would like us to email you when we have updated this page or the CEPGI.

CLEAN ENERGY PATENT GROWTH INDEX.COM

Heslin Rothenberg Farley & Mesiti P.C.

cleantechintellectualproperty.com

© 2009 Heslin Rothenberg Farley & Mesiti P.C. 

CLEAN ENERGY PATENT GROWTH INDEX 4th Quarter 2008

The CLEAN ENERGY PATENT GROWTH INDEX (CEPGI) is published quarterly by the Cleantech Group at Heslin Rothenberg Farley & Mesiti P.C.  The CEPGI provides an indication of the trend of innovative activity in the Clean Energy sector from 2002 to the present.  It also tracks success rates of earned patents by ranking Patent Owners, along with the Countries and the U.S. States which receive the most clean energy patents.  (Click for a downloadable version of this post.)

The granting of patents by the United States Patent and Trademark (PTO) is often cited as a measure of the inventive activity and evidence of the effectiveness of research & development investments.   Patents are considered to be such an indicator, because to be awarded a patent, it requires not only the efforts of inventors to develop new and non-obvious innovations but also successful handling by patent counsel to shepherd a patent application through the PTO.  Thus, the granting of a patent is an indicator that efforts at innovation have been successful and that an innovation had enough perceived value to justify the time and expense in procuring the patent.

The CEPGI (shown below annually) tracks the granting of U.S. patents for the following sub-components: Solar, Wind, Hybrid/electric vehicles, Fuel Cells, Hydroelectric, Tidal/wave, Geothermal, Biomass/biofuels and other clean renewable energy.

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The CEPGI for 2008 was at its highest level in the seven year period of its tracking at 928 granted patents.  As depicted in the below breakdown of the CEPGI by its sub-components, patents in wind, fuel cells, hydroelectric, tidal and geothermal were up in 2008 over 2007 with hydroelectric and tidal patents being at all time highs.

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In contrast, solar patents decreased slightly in 2008 and continued at a relatively steady pace since 2005.  Hybrid/electric vehicle and biomass/biofuel energy patents also fell in 2008.  Wind patents increased dramatically in the last seven years from a low of 42 to a high in 2008 of 155. Fuel cell patents also continued to dwarf the other components of the CEPGI in absolute numbers in 2008. 

The top patent owners since 2002 are shown below, also annotated to show the 2008 contribution:

 

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Honda again claimed the Clean Energy Patent crown in 2008 by edging General Motors out by two patents, and Honda leads overall since 2002.  Automobile companies occupy 5 of the top ten patent leader spots since 2002 with three more in the top 25.  Fuel Cell manufacturers Plug Power, Ballard and United technologies also appear in the top ten patent owners.  The remaining spots in the top ten are occupied by General Electric on the strength primarily of its wind patents (with an assist from its solar technologies), and solar manufacturer Canon. 

As depicted below in the Fuel Cell patent owner breakdown, Honda was also tops in Fuel Cells over the six year period, along with leading in 2008.  GM, Nissan, Toyota and auto parts maker Delphi also cracked the top ten in fuel cells.  Ballard and Plug Power remained in the top ten even with single digit patent totals for 2008.  UTC, Matsushita and Hewlett-Packard round out the top ten for fuel cells.

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As indicated above, wind patents have increased dramatically in the last seven years, to a high in 2008 of 155. The vast majority of the activity in wind patents was driven by General Electric and Aloys Wobben, the owner of Enercon GmbH of Germany, as depicted above.  GE claimed the top spot as the holder of the most wind patents since 2002 by adding 37 wind patents in 2008- making it tops in 2008 and overall.  Vestas Wind Systems had 1 patent in 2008 and 15 overall.  The rest of the top 15 were less than 10 overall and 1 or less for 2008. 

Canon continues to lead the other Solar patent owners since 2002 even without any patents granted in 2008 as depicted below.  Sunpower Corp was the top patentee in 2008 with six granted patents and 13 overall.  GE added to its wind patents in 2008 with 3 solar patents.  Sharp added two patents and Emcore Corporation added 2 patents.  Boeing and Konarka added one patent and the remainder of the top 11 patent owners since 2002 did not have any granted patents in 2008.      

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Honda and Ford lead Toyota, maker of the market leading Prius, in Hybrid/electric vehicle patents since 2002.  GM’s work on the Chevy Volt has not yet been enough to propel in into the top 3 Hybrid/electric vehicle patent owners-leaving GM at number 4 since 2002.  Ford led in 2008 with the only double digit (13) gain.  Honda and Hyundai tied for second in 2008 followed by GM and Nissan.  The rest of the top ten since 2002 includes Aisin AW Co. Ltd., Hitachi, Suzuki and Denso Corp. 

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Also, although not depicted above, Ocean Power Technologies continues to lead in the Tidal sector picking up 3 patents in 2008 and a total of 10 since 2002. Seabased AG picked up 2 patents in 2008 as did two individuals- Glen Cook and Dennis Hollis Gehring. GE also added one tidal patent and a hydroelectric patent. The other 2008 hydroelectric patentees each had one patent except for Simon Srybnik and Louis Srybnik who had two patents.

GE was granted two geothermal patents in 2008. Kalex, LLC continues to lead in geothermal patents despite no patents in 2008.

In the biofuel/biomass The Research Foundation of State University of New York continues to lead overall while each 2008 patentee had one patent each.

We have also looked at the top university patent owners and have found that the University of California is significantly ahead of second place California Institute of Technology in this all Golden State duel dating to 2002. The Research Foundation of the State of New York is a distant third and is grouped in descending one patent increments with Midwest Research Institute, Texas A&M, MIT, the University of Pennsylvania, Forskningscenter Riso of Denmark and Stanford Junior University (working with Honda).

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Geographically, U.S. patent owners and inventors tied the rest of the world in the number of U.S. patents granted in the Clean Energy field over the period 2002-2008 with fifty percent of the granted U.S. patents as depicted below. California, Michigan, New York and Connecticut lead the other U.S. states in the Clean Energy area with the first three garnering twenty five percent of the Clean Energy patents granted to U.S. assignees since 2002.

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Patent applicants from Japan (29 percent) and Germany (8 percent) were issued the second and third largest number of U.S. patents. Canada and South Korea followed as depicted below with South Korea surpassing Canada in 2008.

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As depicted below, Fuel Cell patents since 2002 are dominated by Japan, Germany and the states of Michigan, Connecticut, New York, California and Texas. The U.S. leads the world with 52 percent of U.S. patents in fuel cells followed by Japan with 29 percent and Germany with 8 percent.

 

As depicted below, the number of patents granted to U.S. entities is trending downwardly since 2004 with the number granted to Japanese entities is on an upward trend.

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The U.S. is slightly behind the rest of the world in the number of U.S. wind patents granted since 2002 with 48 percent as depicted above. Germany follows with 19 percent due to Aloys Wobben, and Japan and Denmark tie for third at 7 percent. New York leads US states with 16 percent of the US wind patents thanks to GE. California follows with 8 percent and Texas lags at 3 percent.

As depicted below the number of patents granted to U.S. entities has been on a steep incline over the period illustrated while the rest of the world has stayed relatively consistent or is trending downwardly.

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As in wind, the U.S. has slightly less than half the granted solar patents since 2002 at 46 percent as depicted below. Japan is next at 33 percent and Germany is at 6 percent. California leads U.S. States with fifteen percent followed by Illinois at 4 percent, and New York and Massachusetts at 3 percent. New Jersey Michigan and Washington are at 2 percent while Florida, Arizona, New Mexico, Ohio, Missouri and Connecticut are at one percent of the granted U.S. solar patents since 2002.

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Also, as depicted below the number of solar patents granted to Japanese companies appears to be in a free fall while those granted to U.S. companies is at a relatively high level and on a slight upswing.

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The U.S. has even less of the granted U.S. patents in Hybrid/ Electric vehicles than the sectors described above at 40 percent of the granted U.S. patents as depicted below. Japan leads, not surprisingly, with 48 percent of the granted U.S. patents in this sector. Korea has 4 percent while Germany has 3 percent. Michigan lead U.S. states with 27 percent of the granted U.S. patents in this area. California and Ohio have two percent while Colorado, New York, Illinois Florida, and Tennessee each have one percent. 

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Hybrid/electric vehicle patents is on the decline both for Japanese and U.S. entities as depicted below.

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We have also analyzed the relative concentration of patents among patent owners in each sector as presented in the first graph below with each concentric circle depicting the relative distribution of patents among the top one percent of patent owners, the 95-99 percentile, 80-95 percentile and the bottom eighty percent of patent owners. The second graph depicts the relative concentrations as a radiograph with the different shades of blue indicating the top 1 percent, top 1-5 percent, the next 15 percent and the bottom 80 percent of patent owners by number of patents received.

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As depicted, Fuel Cell and Wind are the most concentrated in the top one percent of patent owners with 29 percent of the patents in each of these areas. Wind is the most stratified between the top (29%) the bottom (41%) having the lowest percentage (30) in the mid range of 1-80 percent of patent owners. In fact, seventy percent of wind patents are owned by the top one and bottom 80 percent of patent owners. Solar patents may be the most evenly distributed with twenty one percent of patents in the top one percent of patent owners, fifteen percent in the top 1-5 percent, twenty two percent in the next 15 percent and forty two percent of patents in the bottom 80 percent of patent owners. Hybrid/electric vehicle patents had the highest percentage in the top 2-5 percent range at forty percent of all hybrid/electric patents.

The CEPGI is updated quarterly and is occasionally supplemented with related articles posted on www.cleanenergypatentgrowthindex.com

Please contact us at info@cleanenergypatentgrowthindex.com if you have any questions or would like us to email you when we have updated this page or the CEPGI.

CLEAN ENERGY PATENT GROWTH INDEX.COM

Heslin Rothenberg Farley & Mesiti P.C.

cleantechintellectualproperty.com

© 2008 Heslin Rothenberg Farley & Mesiti P.C. 

CLEAN ENERGY PATENT GROWTH INDEX 2nd Quarter 2008

   

The CLEAN ENERGY PATENT GROWTH INDEX (CEPGI), published quarterly by the Cleantech Group at Heslin Rothenberg Farley & Mesiti P.C, provides an indication of the trend of innovative activity in the Clean Energy sector.  Results from the second quarter of 2008 reveal the CEPGI to have a value of 217 granted U.S. patents which is down three from the first quarter of 2008 and down from a value of 228 in the second quarter of 2007.  (Click here for a downloadable version of this post.)

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The components breakdown of the CEPGI continue to show fuel cells dominating the other components in absolute numbers, but a downward trend for fuel cell patents begun in the fourth quarter of 2006 continued, falling by 10 relative to the first quarter.  Granted wind and solar patents headed along opposite trajectories for the last two quarters with wind ascending (48) and solar (21) descending.    Hybrid/electric vehicle patents (14) continued their downward trend begun in early 2007.  Tidal/wave energy granted patents continued an upward trend since the third quarter of 2007 with 10, up 1 relative to the first quarter.   

GE overtook Honda for the gold medal (in this Olympic month) in the patent chase for the most new granted clean energy patents in the second quarter with 17 followed by Honda with 13.  GE’s patents (12 of 17) were overwhelmingly wind power related while Honda’s (12 of 13) were predominantly fuel cell related.  General Motors grabbed bronze with 11 on the strength of its fuel cell patents.  Aloys Wobben, who is the head of Enercon GmbH, a German wind turbine company, holds fourth place with 8.  Automotive companies continued their strong showing with Nissan (7) and Toyota (6) in the fifth and sixth spots on the strength of their fuel cell efforts.  Samsung (5) placed 7^th while Toshiba (4) and Matsushita Electric (4) tied, all of which were related to fuel cells.  Individual inventor Dennis Fernandez rounded out the top 10 with three fuel cell related patents.       

As depicted in the graphs below, Japan continued to lead the U.S. states and other countries that have historically contended for the geographical clean energy patent crown.  As is evident from the graphs, Japan, New York and California had an increase in the number of clean energy patents relative to the first quarter.  Germany held steady while Michigan, Connecticut, and Canada dropped. 

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Trend lines by quarter through the second quarter of 2008 for the CEPGI and for each of the CEPGI components are depicted below:

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CEPGI yearly totals through 2007 are depicted below:

 

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Please contact us at info@cleanenergypatentgrowthindex.com if you have any questions or would like us to email you when we have updated this page or the CEPGI. 

CLEAN ENERGY PATENT GROWTH INDEX.COM

Heslin Rothenberg Farley & Mesiti P.C.

cleantechintellectualproperty.com

© 2008 Heslin Rothenberg Farley & Mesiti P.C.    

CLEAN ENERGY PATENT GROWTH INDEX 1st Quarter 2008

The CLEAN ENERGY PATENT GROWTH INDEX (CEPGI), published quarterly by the Cleantech Group at Heslin Rothenberg Farley & Mesiti P.C, provides an indication of the trend of innovative activity in the Clean Energy sector.  Results from the first quarter of 2008 reveal the CEPGI to have a value of 220 granted U.S. patents which is down from a value of 227 in the fourth quarter of 2007 and down from a value of 228 in the first quarter of 2007. (Please click on the charts below for larger versions)

 
The long term trend for the components of the CEPGI show Fuel Cells continuing to dominate the other components, but are down relative to the last quarter and one year earlier.  Granted wind patents continue to trend upwardly after a third quarter drop.  Hybrid/electric vehicle patents continue their downward trend begun in early 2007.  Also, solar energy patents dipped relative to the last quarter and trend downwardly.

Tidal/wave energy granted patents reached a high last seen in 2004 while geothermal patents reached a new high.

Honda had the most new granted clean energy patents (16) in the first quarter followed by a second place tie between General Electric (11) and General Motors (11).   Also, automotive companies dominate the top ten with Nissan, Toyota,  and Hyundai in the fourth, fifth, and sixth spots, and with Ford in the tenth.

An analysis was also performed of several of the U.S. states and countries with the largest number of clean energy patents historically.  Graphs depicting the trend of patents in these states and countries are depicted below.  As is evident from the charts, Japan continued to lead the other contenders in the first quarter but dropped slightly from the fourth quarter.  Michigan, California, Connecticut and Germany also dropped slightly while New York and Canada had more issued patents than in the fourth quarter.

 

 

   

Trend lines by quarter through the first quarter of 2008 for the CEPGI and for each of the CEPGI components are depicted below:

 

            
CEPGI yearly totals through 2007 are depicted below:

Please contact us at info@cleanenergypatentgrowthindex.com if you have any questions or would like us to email you when we have updated this page or the CEPGI.

Click here to download a copy of this post: cepgi_1st_quarter_2008_downloadable.doc

CLEAN ENERGY PATENT GROWTH INDEX.COM

Heslin Rothenberg Farley & Mesiti P.C.

cleantechintellectualproperty.com

© 2008 Heslin Rothenberg Farley & Mesiti P.C.    

   

CLEAN ENERGY PATENT GROWTH INDEX 4th quarter 2007

The CLEAN ENERGY PATENT GROWTH INDEX (CEPGI), published quarterly by the Cleantech Group at Heslin Rothenberg Farley & Mesiti P.C, provides an indication of the trend of innovative activity in the Clean Energy sector. Results from the fourth quarter of 2007 reveal the CEPGI to have a value of 227 granted U.S. patents which is up from the third quarter of 2007 and down from the fourth quarter of 2006. As depicted below, the CEPGI total for 2007 was down relative to 2006 and up over the five year period (click on graph for larger version):

Solar and wind patents both trended upwardly in third and fourth quarters as depicted below:

The five year trends for the components of the CEPGI show Fuel Cells dominating and wind increasing.  Granted Solar and hybrid vehicle patents have decreased and reached a plateau of sorts as depicted below:

We have added patent owner information as listed on the granted patents and geographic information based on the information listed on the patents. The Leading Clean Energy patent owners for over the last five years (2002-2007) include Honda, General Motors, United Technologies, Ballard, Toyota and Ford as depicted:

If automotive companies are excluded, the top 10 is dominated by fuel cell companies such as Plug Power, Ballard and UTC, and is rounded out by Canon and GE.

Top patent owners in the Solar energy area include Canon, Sharp, Boeing, and Kanegafuchi Chemical Industries.

Aloys Wobben of Enercon GmbH tops the wind list followed by GE while Honda, GM, Ballard, United Technologies, and Plug Power lead in fuel cells. Hybrid/electric vehicles are dominated by Honda and Ford with Toyota, GM and Nissan trailing.

Geographically, U.S. patent owners and inventors tie the rest of the world in the number of US patents in the Clean Energy field over the period 2002-2007 with fifty percent of the granted U.S. patents.  Patent applicants from Japan (29 percent) and Germany (8 percent) were issued the second and third largest number of U.S. patents.

The U.S. states with the largest number of U.S. patent owners and inventors were Michigan (13 percent), California (7 percent), New York (6 percent) and Connecticut (4 percent).

The U.S. (46 percent), Germany (20 percent), Denmark (8 percent) and Japan (6 percent) were tops in the world in wind with New York (13 percent), California (9 percent) and Texas (3 percent) leading the U.S.

The U.S. (44 percent), Japan (35 percent) and Germany (6 percent) lead in Solar energy patents over the period from 2002-2007. California (14 percent) leads the U.S. in Solar energy patents followed by a second tier of Illinois (4 percent) New York(3 percent), Massachusetts (3 percent) and New Jersey (2 percent).

The U.S. (53 percent), Japan (28 percent) and Germany (8 percent) again were the top patent grantees in Fuel Cell technology while Michigan with 15 percent dominated the U.S. rankings followed by New York and Connecticut with 7 percent and California with 5 percent of the total patents granted to U.S. patentees.

Although not depicted, Biomass/Biofuel patents were distributed over ninety one owners for the five year period from 2002-2007 with the Research Foundation of the State of New York having the most granted patents at five followed by Manufacturing and Technology Conversion International, Inc. at three. Ocean Power Technologies, Inc. had the most patents (8) in the tidal/wave energy technology area. Kalex, LLC had the largest number of geothermal patents at eight. Herbert L. Williams had three patents in the hydroelectric area while the following had two: Aloys Wobben, Kabushiki Kaisha Sankyo Seiki Seisakusho, New World Generation Inc., and Hydro Resource Solution LLC.

Trend lines by quarter through the fourth quarter of 2007 for the CEPGI and for each of the CEPGI components are depicted below:

Please contact us at info@cleanenergypatentgrowthindex.com if you have any questions or would like us to email you when we have updated this page or the CEPGI.

CLEAN ENERGY PATENT GROWTH INDEX.COM

Heslin Rothenberg Farley & Mesiti P.C.

cleantechintellectualproperty.com

© 2008 Heslin Rothenberg Farley & Mesiti P.C.

Clean Energy Patent Growth Index Ed. 1

Presented by:  ^THE CLEANTECH GROUP

December 14, 2007

The CLEAN ENERGY PATENT GROWTH INDEX (CEPGI) is published quarterly by the Cleantech Group at Heslin Rothenberg Farley & Mesiti P.C.  The CEPGI provides a relative indication of the effort (e.g., Research & Development) put into, and success of, Clean Energy innovation. 

The CEPGI tracks the granting of U.S. patents via the following sub-components which together make up the CEPGI:

Solar

Wind

Hybrid/electric vehicles

Fuel Cells

Hydroelectric

Tidal/wave

Geothermal

Biomass/biofuels

Other clean renewable energy

        

The granting of patents by the United States Patent and Trademark (PTO) is an often cited measure of the outcome of inventive activity and the resources invested in developing innovations, such as research & development funding.  The successful granting of a patent requires that efforts be made by inventors to develop innovations and by patent counsel to shepherd a patent application through the PTO.  A patent thus is an indicator that efforts at innovation have been successful and that an innovation had enough perceived value to justify the time and expense in procuring the patent.

The Clean Energy Patent Growth Index (CEPGI) provides an indication of the trend of innovative activity for the last five years in the U.S., along with quarterly results.  The value for the CEPGI for the third quarter of 2007 is 211 which is down slightly from 228 in the second quarter.  From 2002 through the second quarter of 2007, the number of clean energy patents has ranged from a low of 105 in the first quarter of 2002 to a high in early 2005 of 254.  A generally upward trend for the entire period was also found as depicted below

   

As indicated in the quarterly composite graph of the CEPGI components depicted below, fuel cell innovations provide the largest absolute number of clean energy patents and drive the CEPGI trends to a degree.  Solar and wind energy along with hybrid/electric vehicles provide the other significant part of the CEPGI with the remaining components contributing to a lesser degree. 

Wind energy innovation is on an upward trend while solar energy innovation appears to be heading in the opposite direction. 

The patents included in the CEPGI and its sub-components have been vetted by the Cleantech Group  at Heslin Rothenberg Farley & Mesiti P.C.  to ensure that each patent is properly included in the appropriate sub-component and that the technology disclosed therein relates to the generation of energy for consumption by a device other than itself.

  The CEPGI itself is a cumulation of the sub-components and has been corrected to avoid the duplicate inclusion of any patents when a patent relates to more than one clean energy technology (i.e., a patent is included in more than one sub-component)

Each of the CEPGI components is depicted below:

   

   

Please contact us at info@cleanenergypatentgrowthindex.com if you have any questions or would like us to email you when we have updated this page or the CEPGI. 

Coming soon…Clean Energy Patent Assignee and geographic information.

CLEAN ENERGY PATENT GROWTH INDEX.COM