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U.S. PATENT AND TRADEMARK OFFICE
Office of Electronic Information Products
Patent Technology Monitoring Division (PTMD)

Patenting In Technology Classes,
Breakout By Organization

Count of 2000 - 2004 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 2000 2001 2002 2003 2004 Total
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 39 52 35 68 65 259
SANYO ELECTRIC CO., LTD. 18 36 55 49 32 190
~Individually Owned Patent 27 28 25 40 16 136
SONY CORPORATION 11 10 25 23 30 99
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 6 7 11 29 45 98
WILSON GREATBATCH LTD. 16 15 16 27 19 93
GENERAL MOTORS CORPORATION 7 8 22 24 30 91
PLUG POWER INC. 9 17 19 18 15 78
EVEREADY BATTERY COMPANY, INC. 11 30 11 14 8 74
SAMSUNG SDI CO., LTD. 0 8 20 24 22 74
BALLARD POWER SYSTEMS INC. 11 9 13 20 17 70
UTC FUEL CELLS, LLC 0 0 23 20 25 68
GILLETTE COMPANY 2 13 21 10 14 60
TOSHIBA CORPORATION 8 9 12 11 15 55
MOTOROLA, INC. 21 6 9 5 11 52
JAPAN STORAGE BATTERY COMPANY LIMITED 9 9 16 10 7 51
TOYOTA JIDOSHA K.K. 8 8 7 14 14 51
ALCATEL 10 14 14 6 5 49
DELPHI TECHNOLOGIES, INC. 3 4 9 11 19 46
MITSUBISHI DENKI KABUSHIKI KAISHA 3 7 16 8 7 41
VALENCE TECHNOLOGY, INC. 12 8 9 5 7 41
NISSAN MOTOR COMPANY, LIMITED 0 2 7 15 14 38
REVEO, INC. 0 11 13 11 2 37
3M INNOVATIVE PROPERTIES COMPANY 8 8 5 7 5 33
SIEMENS AKTIENGESELLSCHAFT 12 7 2 9 1 31
INTERNATIONAL FUEL CELLS, LLC 10 18 1 0 1 30
MITSUBISHI CHEMICAL CORPORATION 9 8 3 6 2 28
OVONIC BATTERY COMPANY, INC. 3 3 9 9 4 28
SAMSUNG DISPLAY DEVICES CO., LTD. 5 12 7 2 2 28
BALLARD POWER SYSTEMS AG 0 0 0 17 10 27
MOLTECH CORPORATION 3 11 7 3 3 27
NEC CORPORATION 4 10 7 1 5 27
CALIFORNIA INSTITUTE OF TECHNOLOGY 3 7 8 1 5 24
CANON KABUSHIKI KAISHA 3 5 7 6 2 23
NGK INSULATORS LTD. 2 3 9 4 5 23
RAY-O-VAC CORPORATION 6 10 4 2 1 23
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 3 4 2 3 11 23
AER ENERGY RESOURCES, INC. 5 8 8 1 0 22
ENSCI INCORPORATED 1 4 1 9 4 19
MICRON TECHNOLOGY, INC. 7 7 3 2 0 19
SIEMENS WESTINGHOUSE POWER CORPORATION 3 4 5 4 2 18
DURACELL INC. 11 4 0 1 1 17
HITACHI, LTD 2 4 5 3 2 16
TOYO KOHAN CO., LTD. 1 5 5 2 3 16
AISIN SEIKI KABUSHIKI KAISHA 2 3 4 5 1 15
ENERGY CONVERSION DEVICES, INC. 0 2 3 6 4 15
FUJI PHOTO FILM CO., LTD 6 4 2 1 2 15
GNB TECHNOLOGIES, INC. 6 5 4 0 0 15
JOHNSON CONTROLS TECHNOLOGY COMPANY 3 9 3 0 0 15
TOSHIBA BATTERY CO., LTD. 1 3 5 6 0 15
CELGARD INC. 4 3 4 0 3 14
DAIMLER-CHRYSLER AKTIENGESELLSCHAFT 2 2 6 1 3 14
POLYPLUS BATTERY COMPANY, INC. 4 4 3 2 1 14
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 0 0 0 5 8 13
HYBRID POWER GENERATION SYSTEMS, LLC 0 0 1 8 4 13
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG 1 1 3 4 4 13
MITSUBISHI HEAVY INDUSTRIES, LTD. 1 5 3 4 0 13
MTI MICROFUEL CELLS, INC. 0 0 0 4 9 13
NISSHINBO INDUSTRIES, INC. 0 1 5 2 5 13
SUMITOMO ELECTRIC INDUSTRIES CO., LTD. 3 1 5 1 3 13
HYDRO-QUEBEC 2 4 3 1 2 12
NEC TOKIN CORPORATION 0 0 3 4 5 12
UBE INDUSTRIES LTD. 3 0 5 3 1 12
ALPS ELECTRIC CO., LTD. 2 6 2 1 0 11
C&D/CHARTER HOLDINGS, INC. 0 3 3 3 2 11
GRAFTECH INC. 0 0 4 7 0 11
HITACHI MAXELL, LTD. 2 0 2 4 3 11
HYDROGENICS CORPORATION 0 0 1 2 8 11
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO 4 2 2 2 1 11
MEDTRONIC INC. 6 3 1 1 0 11
TDK CORPORATION 1 3 3 3 1 11
DENSO CORPORATION 4 1 1 2 2 10
FORSCHUNGSZENTRUM JULICH GMBH 2 3 2 2 1 10
IDATECH LLC 0 1 5 1 3 10
PROTON ENERGY SYSTEMS, INC. 0 0 1 2 7 10
QUALLION, LLC 1 1 0 3 5 10
SULZER HEXIS AG 0 6 1 1 2 10
SUMITOMO CHEMICAL COMPANY, LIMITED 4 2 2 0 2 10
UNITED STATES OF AMERICA, DEPARTMENT OF ENERGY 4 0 4 2 0 10
AVISTA LABORATORIES, INC. 0 1 4 2 2 9
DANIONICS A/S 1 3 2 2 1 9
FUELCELL ENERGY, INC. 0 0 5 3 1 9
MOLTECH POWER SYSTEMS, INC. 2 3 4 0 0 9
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 5 0 2 1 1 9
SHIN ETSU CHEMICAL CO., LTD. 2 4 0 0 3 9
SHOWA DENKO KABUSHIKI KAISHA 1 2 1 2 3 9
TOYODA JIDOSHOKKI SEISAKUSHO KABUSHIKI KAISHA 1 1 4 2 1 9
U.S. PHILIPS CORPORATION 6 1 2 0 0 9
VARTA BATTERIE A.G. 6 3 0 0 0 9
BLACK & DECKER INC. 0 1 2 5 0 8
DARAMIC, INC. 2 0 2 1 3 8
FMC CORPORATION 3 2 0 2 1 8
INTERNATIONAL FUEL CELLS CORPORATION 5 3 0 0 0 8
JAPAN VILENE COMPANY LTD. 2 1 3 2 0 8
KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY 0 1 2 1 4 8
LYNNTECH, INC. 3 1 3 0 1 8
MURATA MANUFACTURING CO., LTD. 1 6 0 1 0 8
YAZAKI CORP. 3 2 0 1 2 8
ZINC MATRIX POWER, INC. 0 0 1 4 3 8
ASAHI GLASS COMPANY, LTD. 1 1 0 2 3 7
BASF AKTIENGESELLSCHAFT 0 0 2 1 4 7
CORNING INCORPORATED 1 1 1 4 0 7
DOW CHEMICAL COMPANY 3 3 0 1 0 7
FUJITSU LIMITED 2 1 1 2 1 7
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 0 2 3 0 2 7
JOHNSON MATTHEY PUBLIC LIMITED COMPANY 2 1 1 2 1 7
KAO KABUSHIKI KAISHA (KAO CORPORATION) 1 2 3 0 1 7
KATAYAMA SPECIAL INDUSTRIES, LTD. 1 0 4 0 2 7
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 0 3 2 2 7
LUCENT TECHNOLOGIES INC. 2 4 0 1 0 7
METALLIC POWER, INC. 2 1 0 0 4 7
MITSUBISHI MATERIALS CORPORATION 2 1 0 3 1 7
SRI INTERNATIONAL 2 2 1 1 1 7
UNITED STATES OF AMERICA, ARMY 0 2 2 2 1 7
BROOKHAVEN SCIENCE ASSOCIATES LLC 2 2 1 1 0 6
DAIKIN INDUSTRIES LIMITED 1 2 2 0 1 6
DE NORA S.P.A. 4 0 1 0 1 6
E. I. DU PONT DE NEMOURS AND COMPANY 2 1 0 0 3 6
ELECTRIC FUEL LIMITED 2 1 1 2 0 6
FORD GLOBAL TECHNOLOGIES, INC. 1 2 3 0 0 6
H-POWER CORP. 3 0 0 0 3 6
HUGHES ELECTRONICS CORP. 4 1 1 0 0 6
KABUSHIKIKAISHA EQUOS RESEARCH CO., LTD. 0 2 1 2 1 6
NGK SPARK PLUG CO., LTD. 0 1 1 2 2 6
POWERGENIX SYSTEMS, INC. 0 0 0 0 6 6
SAFT-SOCIETE DES ACCUMULATEURS FIXES ET DE TRACTION 5 0 1 0 0 6
SEIKO INSTRUMENTS INC. 1 0 2 3 0 6
SHIN KOBE ELECTRIC MACHINERY CO., LTD. 0 0 1 2 3 6
SPACE SYSTEMS/LORAL, INC. 0 5 1 0 0 6
TECHNOLOGY MANAGEMENT, INC. 0 1 4 0 1 6
TELCORDIA TECHNOLOGIES, INC. 2 0 3 1 0 6
TELEFONAKTIEBOLAGET LM ERICSSON 0 0 3 3 0 6
UNITED STATES OF AMERICA, NAVY 0 2 1 0 3 6
UNIVERSITY OF CHICAGO 1 1 0 1 3 6
WILSON GREATBATCH TECHNOLOGIES, INC. 0 0 0 1 5 6
YUASA CORPORATION 1 1 1 2 1 6
ACCUMULATORENWERKE HOPPECKE CARL ZOELLNER & SOHN GMBH & CO. 1 0 1 2 1 5
AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY 3 1 0 0 1 5
ASIA PACIFIC FUEL CELL TECHNOLOGIES, LTD. 0 0 0 1 4 5
CONCORDE BATTERY CORPORATION 0 1 2 2 0 5
KUREHA KAGAKU KOGYO K.K. 0 2 1 1 1 5
LITHIUM POWER TECHNOLOGIES, INC. 0 0 1 3 1 5
LITHIUM TECHNOLOGY CORPORATION 1 3 1 0 0 5
MANHATTAN SCIENTIFICS, INC. 0 1 0 2 2 5
MICROCELL CORPORATION 0 0 5 0 0 5
MITSUI MINING + SMELTING CO., LTD. 0 0 3 0 2 5
NANOGRAM CORPORATION 1 1 1 1 1 5
NEC MOBILE ENERGY CORPORATION 0 0 1 2 2 5
NOKIA MOBILE PHONES LTD. 1 0 2 1 1 5
RAMOT UNIVERSITY AUTHORITY FOR APPLIED RESEARCH AND INDUSTRIAL DEVELOPMENT LIMITED 0 2 3 0 0 5
RELION, INC. 0 0 0 0 5 5
XCELLSIS GMBH 0 3 2 0 0 5


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