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U.S. PATENT AND TRADEMARK OFFICE
Electronic Information Products Division
Patent Technology Monitoring Team (PTMT)

Patenting In Technology Classes,
Breakout By Organization

Count of 2004 - 2008 Utility Patent Grants,
By Calendar Year of Grant
With Patent Counts Based on Primary Patent Classification

- Explanation of Data -

Rank Ordered Listing of Organizations Receiving 5 or More Utility Patents During the Period
Having Primary Classification In

Class 429, Chemistry: Electrical Current Producing Apparatus, Product, and Process

( technology class is determined by the primary classification assigned to the patent- see 'Explanation of Data' )
( patent ownership is determined by the first-named assignee listed on a patent )

The following table displays first-named assignees and counts of their associated patents, as distributed by the year of patent grant.
First-Named Assignee 2004 2005 2006 2007 2008 Total
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 65 43 52 35 49 244
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 45 42 53 49 45 234
SAMSUNG SDI CO., LTD. 22 21 30 44 41 158
GENERAL MOTORS CORPORATION 30 32 19 34 35 150
SONY CORPORATION 30 15 40 40 21 146
SANYO ELECTRIC CO., LTD. 32 23 19 27 30 131
NISSAN MOTOR COMPANY, LIMITED 14 17 20 26 27 104
~INDIVIDUALLY OWNED PATENT 16 24 21 15 12 88
UTC FUEL CELLS, LLC 25 20 33 4 2 84
GILLETTE COMPANY 14 10 16 15 9 64
DELPHI TECHNOLOGIES, INC. 20 10 16 9 7 62
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 8 12 22 10 10 62
TOSHIBA CORPORATION 15 10 12 13 11 61
BALLARD POWER SYSTEMS INC. 17 19 12 6 4 58
TOYOTA JIDOSHA K.K. 14 11 6 10 17 58
PLUG POWER INC. 15 8 15 8 6 52
NEC CORPORATION 5 5 10 7 6 33
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 11 6 7 5 2 31
EVEREADY BATTERY COMPANY, INC. 8 7 2 4 9 30
MTI MICROFUEL CELLS, INC. 9 5 3 7 4 28
MOTOROLA, INC. 11 6 5 3 1 26
PROTON ENERGY SYSTEMS, INC. 7 5 5 5 4 26
VALENCE TECHNOLOGY, INC. 7 8 4 4 3 26
HITACHI, LTD 2 4 8 7 4 25
QUALLION, LLC 5 2 6 6 6 25
WILSON GREATBATCH LTD. 19 1 0 1 4 25
HYDROGENICS CORPORATION 8 5 5 0 6 24
HITACHI MAXELL, LTD. 3 1 3 7 9 23
WILSON GREATBATCH TECHNOLOGIES, INC. 5 9 8 1 0 23
NGK INSULATORS LTD. 5 11 4 1 1 22
GENERAL ELECTRIC COMPANY 3 5 6 3 4 21
3M INNOVATIVE PROPERTIES COMPANY 5 1 3 5 5 19
FUELCELL ENERGY, INC. 1 6 2 3 7 19
CALIFORNIA INSTITUTE OF TECHNOLOGY 5 0 3 4 5 17
IDATECH LLC 3 6 2 3 3 17
UTC POWER CORPORATION 0 0 0 7 10 17
BALLARD POWER SYSTEMS AG 10 6 0 0 0 16
MITSUBISHI CHEMICAL CORPORATION 2 6 2 6 0 16
OVONIC BATTERY COMPANY, INC. 4 2 2 8 0 16
DENSO CORPORATION 2 2 3 5 3 15
NISSHINBO INDUSTRIES, INC. 5 8 2 0 0 15
SIEMENS AKTIENGESELLSCHAFT 1 4 1 3 6 15
CANON KABUSHIKI KAISHA 2 4 1 2 5 14
DAIMLER-CHRYSLER AKTIENGESELLSCHAFT 3 5 0 4 2 14
JAPAN STORAGE BATTERY COMPANY LIMITED 7 5 2 0 0 14
LG CHEMICAL LTD. 2 2 2 4 4 14
ANGSTROM POWER INC. 0 2 5 4 2 13
E. I. DU PONT DE NEMOURS AND COMPANY 3 1 4 2 3 13
NEC TOKIN CORPORATION 5 3 1 4 0 13
RELION, INC. 5 2 4 0 1 12
UNITED STATES OF AMERICA, NAVY 3 1 4 3 1 12
UNIVERSITY OF CHICAGO 3 5 3 1 0 12
ASAHI GLASS COMPANY, LTD. 3 3 1 3 1 11
MITSUBISHI DENKI KABUSHIKI KAISHA 7 1 2 1 0 11
UCHICAGO ARGONNE LLC 0 0 1 3 7 11
ASIA PACIFIC FUEL CELL TECHNOLOGIES, LTD. 4 1 3 2 0 10
FUJI PHOTO FILM CO., LTD 2 3 5 0 0 10
GS YUASA CORPORATION 0 0 6 3 1 10
JOHNSON MATTHEY PUBLIC LIMITED COMPANY 1 3 3 0 3 10
MEDTRONIC INC. 0 5 0 2 3 10
BLACK & DECKER INC. 0 1 2 4 2 9
COMMISSARIAT A L'ENERGIE ATOMIQUE 0 0 2 4 3 9
CORNING INCORPORATED 0 1 0 5 3 9
FORSCHUNGSZENTRUM JULICH GMBH 1 2 2 3 1 9
KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY 4 0 3 1 1 9
NUCELLSYS GMBH 0 0 2 3 4 9
TEXACO OVONIC FUEL CELL, LLC 3 2 4 0 0 9
UBE INDUSTRIES LTD. 1 3 1 4 0 9
UNITED STATES OF AMERICA, ARMY 1 2 3 1 2 9
AISIN SEIKI KABUSHIKI KAISHA 1 5 0 1 1 8
DARAMIC, INC. 3 2 1 1 1 8
FORD MOTOR COMPANY 2 2 1 2 1 8
GAS TECHNOLOGY INSTITUTE 2 2 2 0 2 8
HYUNDAI MOTOR COMPANY 0 2 3 3 0 8
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG 4 4 0 0 0 8
NEAH POWER SYSTEMS INC 3 1 2 2 0 8
PANASONIC CORPORATION 0 0 0 0 8 8
POLYPLUS BATTERY COMPANY, INC. 1 2 0 3 2 8
POWERGENIX SYSTEMS, INC. 6 1 1 0 0 8
SHIN ETSU CHEMICAL CO., LTD. 3 1 1 1 2 8
SHINKO ELECTRIC INDUSTRIES CO., LTD. 1 0 2 3 2 8
ALBERTA RESEARCH COUNCIL INC. 1 3 0 2 1 7
BASF AKTIENGESELLSCHAFT 4 1 1 1 0 7
BLOOM ENERGY CORPORATION 0 0 2 2 3 7
GORE ENTERPRISE HOLDINGS, INC. 0 1 2 2 2 7
HITACHI CHEMICAL COMPANY, LTD. 1 1 0 1 4 7
ION AMERICA CORPORATION 1 2 4 0 0 7
KABUSHIKIKAISHA EQUOS RESEARCH CO., LTD. 1 2 2 1 1 7
MITSUBISHI MATERIALS CORPORATION 1 1 1 3 1 7
NITTO DENKO CORPORATION 2 2 1 0 2 7
NUVERA FUEL CELLS EUROPE S.R.L. 2 1 1 2 1 7
ROBERT BOSCH GMBH 1 1 0 2 3 7
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 1 0 0 6 0 7
SHOWA DENKO KABUSHIKI KAISHA 3 1 0 1 2 7
SUMITOMO ELECTRIC INDUSTRIES CO., LTD. 3 0 1 2 1 7
TDK CORPORATION 1 0 0 2 4 7
UNIVERSITY OF ILLINOIS 2 1 1 3 0 7
AIR PRODUCTS AND CHEMICALS, INC. 3 0 0 1 2 6
ALCATEL 5 0 1 0 0 6
CELGARD INC. 3 2 1 0 0 6
CYMBET CORPORATION 1 0 2 2 1 6
DAIDO METAL COMPANY 1 0 2 1 2 6
ENERGY CONVERSION DEVICES, INC. 4 2 0 0 0 6
H-POWER CORP. 3 1 2 0 0 6
HYBRID POWER GENERATION SYSTEMS, LLC 4 2 0 0 0 6
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 2 1 2 0 1 6
KYOCERA CORPORATION 0 1 0 3 2 6
LG CHEMICALS CO. LTD. 3 2 0 0 1 6
METALLIC POWER, INC. 4 2 0 0 0 6
MOLTECH CORPORATION 3 3 0 0 0 6
NOK CORPORATION 2 0 1 2 1 6
OVONIC FUEL CELL COMPANY LLC 0 0 3 2 1 6
QUESTAIR TECHNOLOGIES INC. 0 2 2 1 1 6
SEIMI CHEMICAL CO., LTD. 0 1 1 1 3 6
TEXACO INC. 2 1 0 1 2 6
TEXAS A AND M UNIVERSITY 2 1 3 0 0 6
ZINC MATRIX POWER, INC. 3 2 1 0 0 6
A123SYSTEMS, INC. 0 0 1 1 3 5
BATTELLE MEMORIAL INSTITUTE 0 0 0 3 2 5
CERAMIC FUEL CELLS LIMITED 1 1 2 0 1 5
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE 0 1 1 1 2 5
GM GLOBAL TECHNOLOGY OPERATIONS, INC. 0 0 0 0 5 5
JOHNSON CONTROLS TECHNOLOGY COMPANY 0 3 1 0 1 5
KONINKLIJKE PHILIPS ELECTRONICS N.V. 2 0 1 0 2 5
LYNNTECH, INC. 1 2 2 0 0 5
MANHATTAN SCIENTIFICS, INC. 2 1 0 1 1 5
NEC TOKIN TOCHIGI, LTD. 1 2 2 0 0 5
NIPPON KODOSHI CORPORATION 0 2 1 1 1 5
POLYFUEL, INC. 0 0 2 1 2 5
RAY-O-VAC CORPORATION 1 2 1 1 0 5
REVEO, INC. 2 1 1 1 0 5
ROLLS-ROYCE PLC 0 0 1 0 4 5
ROVCAL, INC. 0 3 1 1 0 5
SAMSUNG ELECTRONICS CO., LTD. 2 0 0 2 1 5
SION POWER CORPORATION 0 0 0 2 3 5
SULZER HEXIS AG 2 2 1 0 0 5
SUMITOMO CHEMICAL COMPANY, LIMITED 2 1 0 0 2 5
TOHO GAS CO. LTD. 2 0 1 1 1 5
TOYO KOHAN CO., LTD. 3 1 1 0 0 5
UNIVERSITY OF PENNSYLVANIA 1 3 1 0 0 5

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U.S. Patent and Trademark Office
Electronic Information Products Division - PTMT
P.O Box 1450
Alexandria VA 22313-1450

tel: (571) 272-5600
fax: (571) 273-0110
email: oeip@uspto.gov

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