Skip menu navigation Home > PTMD Home > PTMD Listing of Viewable Reports > Table of Contents for This Set of Reports


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 1998 - 2002 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 1998 1999 2000 2001 2002 Total
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 26 23 39 52 35 175
~Individually Owned Patent 29 32 27 28 25 141
SANYO ELECTRIC CO., LTD. 7 11 18 36 55 127
MOTOROLA, INC. 23 9 21 6 9 68
EVEREADY BATTERY COMPANY, INC. 7 8 11 30 11 67
SONY CORPORATION 14 6 11 10 25 66
WILSON GREATBATCH LTD. 9 6 16 15 16 62
VALENCE TECHNOLOGY, INC. 19 9 12 8 9 57
PLUG POWER INC. 0 8 9 17 19 53
BALLARD POWER SYSTEMS INC. 6 6 11 9 13 45
GENERAL MOTORS CORPORATION 3 4 7 8 22 44
JAPAN STORAGE BATTERY COMPANY LIMITED 6 3 9 9 16 43
SAMSUNG DISPLAY DEVICES CO., LTD. 8 11 5 12 7 43
ALCATEL 0 4 10 14 14 42
TOSHIBA CORPORATION 10 3 8 9 12 42
GILLETTE COMPANY 0 0 2 13 21 36
RAY-O-VAC CORPORATION 8 7 6 10 4 35
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 9 1 6 7 11 34
INTERNATIONAL FUEL CELLS, LLC 1 0 10 18 1 30
MITSUBISHI CHEMICAL CORPORATION 2 8 9 8 3 30
AER ENERGY RESOURCES, INC. 2 5 5 8 8 28
CANON KABUSHIKI KAISHA 6 7 3 5 7 28
DURACELL INC. 5 8 11 4 0 28
MITSUBISHI DENKI KABUSHIKI KAISHA 0 2 3 7 16 28
SAMSUNG SDI CO., LTD. 0 0 0 8 20 28
SIEMENS AKTIENGESELLSCHAFT 0 7 12 7 2 28
TOYOTA JIDOSHA K.K. 2 3 8 8 7 28
GNB TECHNOLOGIES, INC. 2 10 6 5 4 27
NEC CORPORATION 2 3 4 10 7 26
FUJI PHOTO FILM CO., LTD 5 7 6 4 2 24
MOLTECH CORPORATION 0 3 3 11 7 24
REVEO, INC. 0 0 0 11 13 24
UTC FUEL CELLS, LLC 0 0 0 0 23 23
3M INNOVATIVE PROPERTIES COMPANY 0 0 8 8 5 21
CALIFORNIA INSTITUTE OF TECHNOLOGY, INC. 1 2 3 7 8 21
OVONIC BATTERY COMPANY, INC. 3 3 3 3 9 21
NGK INSULATORS LTD. 2 4 2 3 9 20
JOHNSON CONTROLS TECHNOLOGY COMPANY 1 2 3 9 3 18
SIEMENS WESTINGHOUSE POWER CORPORATION 0 6 3 4 5 18
MICRON COMMUNICATIONS, INC. 10 5 2 0 0 17
MICRON TECHNOLOGY, INC. 0 0 7 7 3 17
SAFT-SOCIETE DES ACCUMULATEURS FIXES ET DE TRACTION 6 5 5 0 1 17
DELPHI TECHNOLOGIES, INC. 0 0 3 4 9 16
MEDTRONIC INC. 4 2 6 3 1 16
VARTA BATTERIE A.G. 5 2 6 3 0 16
SUMITOMO ELECTRIC INDUSTRIES CO., LTD. 2 4 3 1 5 15
U.S. PHILIPS CORPORATION 1 5 6 1 2 15
HITACHI, LTD 1 2 2 4 5 14
POLYPLUS BATTERY COMPANY, INC. 2 1 4 4 3 14
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 3 4 5 0 2 14
CELGARD INC. 0 2 4 3 4 13
TOYO KOHAN CO., LTD. 0 2 1 5 5 13
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 2 2 3 4 2 13
AISIN SEIKI KABUSHIKI KAISHA 2 1 2 3 4 12
DAIMLER-CHRYSLER AKTIENGESELLSCHAFT 0 2 2 2 6 12
FORSCHUNGSZENTRUM JULICH GMBH 2 3 2 3 2 12
INTERNATIONAL FUEL CELLS CORPORATION 2 2 5 3 0 12
ALPS ELECTRIC CO., LTD. 1 0 2 6 2 11
DOW CHEMICAL COMPANY 1 4 3 3 0 11
HYDRO-QUEBEC CORPORATION 1 1 2 4 3 11
NISSAN MOTOR COMPANY, LIMITED 1 1 0 2 7 11
SPACE SYSTEMS/LORAL, INC. 1 4 0 5 1 11
SUMITOMO CHEMICAL COMPANY, LIMITED 2 1 4 2 2 11
TOSHIBA BATTERY CO., LTD. 1 1 1 3 5 11
UNITED STATES OF AMERICA, DEPARTMENT OF ENERGY 0 3 4 0 4 11
SHIN ETSU CHEMICAL CO., LTD. 0 4 2 4 0 10
GAS RESEARCH INSTITUTE 3 2 3 1 0 9
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO 0 1 4 2 2 9
LYNNTECH, INC. 1 1 3 1 3 9
MITSUBISHI HEAVY INDUSTRIES CO., LTD. 0 0 1 5 3 9
MOLTECH POWER SYSTEMS, INC. 0 0 2 3 4 9
SULZER HEXIS AG 0 2 0 6 1 9
TOYODA JIDOSHOKKI SEISAKUSHO KABUSHIKI KAISHA 1 2 1 1 4 9
YAZAKI CORP. 3 1 3 2 0 9
BLACK & DECKER INC. 3 2 0 1 2 8
DAIKIN INDUSTRIES LIMITED 3 0 1 2 2 8
E. I. DU PONT DE NEMOURS AND COMPANY 2 3 2 1 0 8
ENSCI INCORPORATED 1 1 1 4 1 8
FORD GLOBAL TECHNOLOGIES, INC. 1 1 1 2 3 8
HUGHES ELECTRONICS CORP. 1 1 4 1 1 8
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 1 2 0 2 3 8
LUCENT TECHNOLOGIES INC. 0 2 2 4 0 8
UBE INDUSTRIES LTD. 0 0 3 0 5 8
DANIONICS A/S 0 1 1 3 2 7
DENSO CORPORATION 0 1 4 1 1 7
ENERGY CONVERSION DEVICES, INC. 0 2 0 2 3 7
FMC CORPORATION 2 0 3 2 0 7
FUJITSU LIMITED 2 1 2 1 1 7
FURUKAWA DENCHI KABUSHIKI KAISHA 5 2 0 0 0 7
JOHNSON MATTHEY PUBLIC LIMITED COMPANY 1 2 2 1 1 7
MITSUI MINING + SMELTING CO., LTD. 3 1 0 0 3 7
MURATA MANUFACTURING CO., LTD. 0 0 1 6 0 7
NISSHINBO INDUSTRIES, INC. 0 1 0 1 5 7
SRI INTERNATIONAL 2 0 2 2 1 7
TANAKA KIKINZOKU KOGYO K.K. 6 1 0 0 0 7
TDK CORPORATION 0 0 1 3 3 7
UNITED STATES OF AMERICA, ARMY 2 1 0 2 2 7
ASAHI KASEI KOGYO KABUSHIKI KAISHA 0 2 0 2 2 6
C&D/CHARTER HOLDINGS, INC. 0 0 0 3 3 6
DARAMIC, INC. 1 1 2 0 2 6
DOUGLAS BATTERY MANUFACTURING CO. 3 0 2 1 0 6
ELECTRIC FUEL LIMITED 1 1 2 1 1 6
ENERGY RESEARCH CORPORATION 2 2 1 1 0 6
H-POWER CORP. 1 2 3 0 0 6
HITACHI MAXELL, LTD. 0 2 2 0 2 6
IDATECH LLC 0 0 0 1 5 6
INTERNATIONAL BUSINESS MACHINES CORPORATION 0 2 3 1 0 6
JAPAN VILENE COMPANY LTD. 0 0 2 1 3 6
KAO KABUSHIKI KAISHA (KAO CORPORATION) 0 0 1 2 3 6
KATAYAMA SPECIAL INDUSTRIES, LTD. 1 0 1 0 4 6
MOLI ENERGY (1990) LIMITED 4 0 0 1 1 6
POLYSTOR CORPORATION 2 1 1 0 2 6
TELCORDIA TECHNOLOGIES, INC. 0 1 2 0 3 6
YUASA CORPORATION 2 1 1 1 1 6
AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY 0 1 3 1 0 5
ALLIED-SIGNAL INC. 0 1 0 4 0 5
AMTEK RESEARCH INTERNATIONAL LLC 1 3 1 0 0 5
AVISTA LABORATORIES, INC. 0 0 0 1 4 5
BROOKHAVEN SCIENCE ASSOCIATES LLC 0 0 2 2 1 5
CORNING INCORPORATED 1 1 1 1 1 5
DE NORA S.P.A. 0 0 4 0 1 5
DEGUSSA AKTIENGESELLSCHAFT 0 3 1 1 0 5
ELECTRO CHEMICAL HOLDINGS SOCIETE ANONYME 3 2 0 0 0 5
ELECTRO FUEL, INC. 0 1 2 1 1 5
ERICSSON, INC. 2 2 1 0 0 5
FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANTEN FORSCHUNG E.V. 1 4 0 0 0 5
FUELCELL ENERGY, INC. 0 0 0 0 5 5
KUREHA KAGAKU KOGYO K.K. 2 0 0 2 1 5
LITHIUM TECHNOLOGY CORPORATION 0 0 1 3 1 5
M-C POWER CORPORATION 2 1 2 0 0 5
MERCK PATENT GESELLSCHAFT MIT BESCHRANKTER HAFTUNG 0 0 1 1 3 5
MICROCELL CORPORATION 0 0 0 0 5 5
MINNESOTA MINING AND MANUFACTURING COMPANY 0 4 0 1 0 5
MITSUBISHI MATERIALS CORPORATION 0 2 2 1 0 5
NIPPON MOLI ENERGY CORP. 1 1 2 1 0 5
OSAKA GAS COMPANY, LIMITED 2 1 1 0 1 5
RAMOT UNIVERSITY AUTHORITY FOR APPLIED RESEARCH AND INDUSTRIAL DEVELOPMENT LIMITED 0 0 0 2 3 5
SAMSUNG ELECTRONICS CO., LTD. 2 2 1 0 0 5
SHOWA DENKO KABUSHIKI KAISHA 0 1 1 2 1 5
TECHNOLOGY MANAGEMENT, INC. 0 0 0 1 4 5
UNITED STATES OF AMERICA, NAVY 2 0 0 2 1 5
UNIVERSITY OF CHICAGO 1 2 1 1 0 5
UNIVERSITY OF IOWA RESEARCH FOUNDATION 0 2 0 2 1 5
XCELLSIS GMBH 0 0 0 3 2 5
ZTEK CORPORATION 1 1 2 0 1 5


PTMD Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD
PK3- Suite 441; P.O Box 1450
Alexandria VA 22313

tel: (703) 306-2600
fax: (703) 306-2737
email: oeip@uspto.gov

address of PTMD pages at the USPTO Web Site: http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
ftp download of selected PTMD reports and materials from : ftp.uspto.gov/pub/taf/


Top

Skip menu navigation Home > PTMD Home > PTMD Listing of Viewable Reports > Table of Contents for This Set of Reports