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

Patenting In Technology Classes,
Breakout By Organization

Count of 2001 - 2005 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 2001 2002 2003 2004 2005 Total
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 52 35 68 65 43 263
SANYO ELECTRIC CO., LTD. 36 55 49 32 23 195
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 7 11 29 45 42 134
~Individually Owned Patent 28 25 40 16 24 133
GENERAL MOTORS CORPORATION 8 22 24 30 32 116
SONY CORPORATION 10 25 23 30 15 103
SAMSUNG SDI CO., LTD. 8 20 24 22 21 95
UTC FUEL CELLS, LLC 0 23 20 25 20 88
BALLARD POWER SYSTEMS INC. 9 13 20 17 19 78
WILSON GREATBATCH LTD. 15 16 27 19 1 78
PLUG POWER INC. 17 19 18 15 8 77
EVEREADY BATTERY COMPANY, INC. 30 11 14 8 7 70
GILLETTE COMPANY 13 21 10 14 10 68
TOSHIBA CORPORATION 9 12 11 15 10 57
NISSAN MOTOR COMPANY, LIMITED 2 7 15 14 17 55
DELPHI TECHNOLOGIES, INC. 4 9 11 20 10 54
TOYOTA JIDOSHA K.K. 8 7 14 14 11 54
JAPAN STORAGE BATTERY COMPANY LIMITED 9 16 10 7 5 47
ALCATEL 14 14 6 5 0 39
MITSUBISHI DENKI KABUSHIKI KAISHA 7 16 8 7 1 39
REVEO, INC. 11 13 11 2 1 38
MOTOROLA, INC. 6 9 5 11 6 37
VALENCE TECHNOLOGY, INC. 8 9 5 7 8 37
BALLARD POWER SYSTEMS AG 0 0 17 10 6 33
NGK INSULATORS LTD. 3 9 4 5 11 32
NEC CORPORATION 10 7 1 5 5 28
MOLTECH CORPORATION 11 7 3 3 3 27
OVONIC BATTERY COMPANY, INC. 3 9 9 4 2 27
3M INNOVATIVE PROPERTIES COMPANY 8 5 7 5 1 26
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 4 2 3 11 6 26
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 0 0 5 8 12 25
MITSUBISHI CHEMICAL CORPORATION 8 3 6 2 6 25
CANON KABUSHIKI KAISHA 5 7 6 2 4 24
SAMSUNG DISPLAY DEVICES CO., LTD. 12 7 2 2 1 24
SIEMENS AKTIENGESELLSCHAFT 7 2 9 1 4 23
CALIFORNIA INSTITUTE OF TECHNOLOGY 7 8 1 5 0 21
NISSHINBO INDUSTRIES, INC. 1 5 2 5 8 21
INTERNATIONAL FUEL CELLS, LLC 18 1 0 1 0 20
RAY-O-VAC CORPORATION 10 4 2 1 2 19
AISIN SEIKI KABUSHIKI KAISHA 3 4 5 1 5 18
ENSCI INCORPORATED 4 1 9 4 0 18
HITACHI, LTD 4 5 3 2 4 18
MTI MICROFUEL CELLS, INC. 0 0 4 9 5 18
AER ENERGY RESOURCES, INC. 8 8 1 0 0 17
DAIMLER-CHRYSLER AKTIENGESELLSCHAFT 2 6 1 3 5 17
ENERGY CONVERSION DEVICES, INC. 2 3 6 4 2 17
HYDROGENICS CORPORATION 0 1 2 8 5 16
IDATECH LLC 1 5 1 3 6 16
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG 1 3 4 4 4 16
SIEMENS WESTINGHOUSE POWER CORPORATION 4 5 4 2 1 16
TOYO KOHAN CO., LTD. 5 5 2 3 1 16
FUELCELL ENERGY, INC. 0 5 3 1 6 15
HYBRID POWER GENERATION SYSTEMS, LLC 0 1 8 4 2 15
JOHNSON CONTROLS TECHNOLOGY COMPANY 9 3 0 0 3 15
NEC TOKIN CORPORATION 0 3 4 5 3 15
PROTON ENERGY SYSTEMS, INC. 0 1 2 7 5 15
WILSON GREATBATCH TECHNOLOGIES, INC. 0 0 1 5 9 15
TOSHIBA BATTERY CO., LTD. 3 5 6 0 0 14
CELGARD INC. 3 4 0 3 2 12
FUJI PHOTO FILM CO., LTD 4 2 1 2 3 12
MICRON TECHNOLOGY, INC. 7 3 2 0 0 12
MITSUBISHI HEAVY INDUSTRIES, LTD. 5 3 4 0 0 12
POLYPLUS BATTERY COMPANY, INC. 4 3 2 1 2 12
SULZER HEXIS AG 6 1 1 2 2 12
UBE INDUSTRIES LTD. 0 5 3 1 3 12
C&D/CHARTER HOLDINGS, INC. 3 3 3 2 0 11
GRAFTECH INC. 0 4 7 0 0 11
HYDRO-QUEBEC 4 3 1 2 1 11
QUALLION, LLC 1 0 3 5 2 11
ALPS ELECTRIC CO., LTD. 6 2 1 0 1 10
FORSCHUNGSZENTRUM JULICH GMBH 3 2 2 1 2 10
HITACHI MAXELL, LTD. 0 2 4 3 1 10
MEDTRONIC INC. 3 1 1 0 5 10
SUMITOMO ELECTRIC INDUSTRIES CO., LTD. 1 5 1 3 0 10
TDK CORPORATION 3 3 3 1 0 10
UNIVERSITY OF CHICAGO 1 0 1 3 5 10
ZINC MATRIX POWER, INC. 0 1 4 3 2 10
ASAHI GLASS COMPANY, LTD. 1 0 2 3 3 9
AVISTA LABORATORIES, INC. 1 4 2 2 0 9
BLACK & DECKER INC. 1 2 5 0 1 9
GENERAL ELECTRIC COMPANY 1 0 0 3 5 9
GNB TECHNOLOGIES, INC. 5 4 0 0 0 9
SHOWA DENKO KABUSHIKI KAISHA 2 1 2 3 1 9
UNITED STATES OF AMERICA, ARMY 2 2 2 1 2 9
BASF AKTIENGESELLSCHAFT 0 2 1 4 1 8
DANIONICS A/S 3 2 2 1 0 8
DARAMIC, INC. 0 2 1 3 2 8
DENSO CORPORATION 1 1 2 2 2 8
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 2 3 0 2 1 8
JOHNSON MATTHEY PUBLIC LIMITED COMPANY 1 1 2 1 3 8
KABUSHIKIKAISHA EQUOS RESEARCH CO., LTD. 2 1 2 1 2 8
KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY 1 2 1 4 0 8
NGK SPARK PLUG CO., LTD. 1 1 2 2 2 8
SHIN ETSU CHEMICAL CO., LTD. 4 0 0 3 1 8
TOYODA JIDOSHOKKI SEISAKUSHO KABUSHIKI KAISHA 1 4 2 1 0 8
CORNING INCORPORATED 1 1 4 0 1 7
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO 2 2 2 1 0 7
KATAYAMA SPECIAL INDUSTRIES, LTD. 0 4 0 2 1 7
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 3 2 2 0 7
LYNNTECH, INC. 1 3 0 1 2 7
METALLIC POWER, INC. 1 0 0 4 2 7
MOLTECH POWER SYSTEMS, INC. 3 4 0 0 0 7
MURATA MANUFACTURING CO., LTD. 6 0 1 0 0 7
POWERGENIX SYSTEMS, INC. 0 0 0 6 1 7
RELION, INC. 0 0 0 5 2 7
SUMITOMO CHEMICAL COMPANY, LIMITED 2 2 0 2 1 7
TECHNOLOGY MANAGEMENT, INC. 1 4 0 1 1 7
UNITED STATES OF AMERICA, NAVY 2 1 0 3 1 7
ASIA PACIFIC FUEL CELL TECHNOLOGIES, LTD. 0 0 1 4 1 6
DURACELL INC. 4 0 1 1 0 6
FMC CORPORATION 2 0 2 1 1 6
JAPAN VILENE COMPANY LTD. 1 3 2 0 0 6
KAO KABUSHIKI KAISHA (KAO CORPORATION) 2 3 0 1 0 6
LG CHEMICAL LTD. 0 1 1 2 2 6
MANHATTAN SCIENTIFICS, INC. 1 0 2 2 1 6
MICROCELL CORPORATION 0 5 0 0 1 6
MITSUBISHI MATERIALS CORPORATION 1 0 3 1 1 6
NITTO DENKO CORPORATION 1 0 1 2 2 6
SANDIA CORPORATION 0 1 1 1 3 6
SEIKO INSTRUMENTS INC. 0 2 3 0 1 6
SHIN KOBE ELECTRIC MACHINERY CO., LTD. 0 1 2 3 0 6
SPACE SYSTEMS/LORAL, INC. 5 1 0 0 0 6
TELEFONAKTIEBOLAGET LM ERICSSON 0 3 3 0 0 6
UNITED STATES OF AMERICA, DEPARTMENT OF ENERGY 0 4 2 0 0 6
YAZAKI CORP. 2 0 1 2 1 6
YUASA CORPORATION 1 1 2 1 1 6
ACCUMULATORENWERKE HOPPECKE CARL ZOELLNER & SOHN GMBH & CO. 0 1 2 1 1 5
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS 0 3 0 1 1 5
CERAMIC FUEL CELLS LIMITED 1 2 0 1 1 5
CONCORDE BATTERY CORPORATION 1 2 2 0 0 5
DAI-ICHI KOGYO SEIYAKU CO., LTD. 2 1 0 1 1 5
DAIKIN INDUSTRIES LIMITED 2 2 0 1 0 5
DEUTSCHE AUTOMOBILGESELLSCHAFT MBH 1 0 2 1 1 5
E. I. DU PONT DE NEMOURS AND COMPANY 1 0 0 3 1 5
EXCELLATRON SOLID STATE, LLC 1 0 1 2 1 5
FORD GLOBAL TECHNOLOGIES, INC. 2 3 0 0 0 5
FORD MOTOR COMPANY 0 0 1 2 2 5
FUJITSU LIMITED 1 1 2 1 0 5
GENCELL CORPORATION 0 0 2 1 2 5
GORE ENTERPRISE HOLDINGS, INC. 2 0 2 0 1 5
HITACHI CHEMICAL COMPANY, LTD. 0 3 0 1 1 5
KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY 1 1 1 0 2 5
KUREHA KAGAKU KOGYO K.K. 2 1 1 1 0 5
LG CHEMICALS CO. LTD. 0 0 0 3 2 5
LITHIUM POWER TECHNOLOGIES, INC. 0 1 3 1 0 5
LUCENT TECHNOLOGIES INC. 4 0 1 0 0 5
MITSUI MINING + SMELTING CO., LTD. 0 3 0 2 0 5
NEAH POWER SYSTEMS INC 0 0 1 3 1 5
NEC MOBILE ENERGY CORPORATION 0 1 2 2 0 5
RAMOT UNIVERSITY AUTHORITY FOR APPLIED RESEARCH AND INDUSTRIAL DEVELOPMENT LIMITED 2 3 0 0 0 5
SRI INTERNATIONAL 2 1 1 1 0 5
TEXACO OVONIC FUEL CELL, LLC 0 0 0 3 2 5
TOYO BOSEKI KABUSHIKI KAISHA 0 2 1 1 1 5
UNIVERSITY OF PENNSYLVANIA 0 0 1 1 3 5
UOP 3 0 1 0 1 5
XCELLSIS GMBH 3 2 0 0 0 5
YARDNEY TECHNICAL PRODUCTS, INC. 1 0 2 1 1 5


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