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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 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 363, Electric Power Conversion Systems

( 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
~Individually Owned Patent 25 22 28 32 32 139
LUCENT TECHNOLOGIES INC. 19 44 41 12 0 116
MITSUBISHI DENKI KABUSHIKI KAISHA 5 11 10 14 9 49
U.S. PHILIPS CORPORATION 14 9 14 7 4 48
SONY CORPORATION 3 7 5 13 19 47
SIEMENS AKTIENGESELLSCHAFT 9 14 8 10 5 46
MURATA MANUFACTURING CO., LTD. 1 8 12 13 9 43
TOSHIBA CORPORATION 10 9 11 7 6 43
HITACHI, LTD 7 4 6 8 16 41
SAMSUNG ELECTRONICS CO., LTD. 9 16 4 6 5 40
GENERAL ELECTRIC COMPANY 4 10 6 10 6 36
ASEA BROWN BOVERI AB 4 12 6 4 6 32
DELTA ELECTRONICS INC. 3 2 4 5 15 29
FUJI ELECTRIC CO., LTD. 2 7 9 3 7 28
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 3 6 3 5 10 27
NEC CORPORATION 8 7 4 3 5 27
ASTEC INTERNATIONAL, LTD. 2 3 6 7 7 25
INTERNATIONAL BUSINESS MACHINES CORPORATION 3 0 4 4 11 22
PHILIPS ELECTRONICS NORTH AMERICA CORP. 6 5 5 2 3 21
ASEA BROWN BOVERI AKTIENGESELLSCHAFT 6 10 2 2 0 20
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 0 0 0 20 20
STMICROELECTRONICS S.R.L. 0 4 5 3 8 20
MOTOROLA, INC. 3 4 6 2 4 19
SGS-THOMSON MICROELECTRONICS S.A. 8 5 3 3 0 19
INTEL CORPORATION 0 3 3 5 5 16
MATSUSHITA ELECTRIC WORKS, LTD. 4 5 6 1 0 16
POWER INTEGRATIONS, INC. 0 3 2 3 8 16
COMPAQ COMPUTER CORPORATION, INC. 11 1 1 1 1 15
INTERNATIONAL RECTIFIER CORPORATION 4 3 3 3 2 15
TEXAS INSTRUMENTS, INCORPORATED 1 0 2 8 4 15
ALCATEL 0 1 5 6 2 14
ERICSSON, INC. 1 1 5 4 3 14
SANSHA ELECTRIC MANUFACTURING CO., LTD. 4 4 2 3 1 14
TDK CORPORATION 0 5 3 3 3 14
TELEFONAKTIEBOLAGET LM ERICSSON 0 2 5 2 5 14
POWERWARE CORPORATION 0 0 1 9 3 13
CANON KABUSHIKI KAISHA 1 3 2 4 2 12
FUJITSU LIMITED 3 0 1 4 4 12
DEUTSCHE THOMSON-BRANDT GMBH 1 5 3 1 1 11
HEWLETT-PACKARD COMPANY 3 3 1 1 3 11
LG ELECTRONICS INC. 2 2 1 3 3 11
THOMSON CONSUMER ELECTRONICS, INC. 6 5 0 0 0 11
HYUNDAI ELECTRONICS INDUSTRIES CO., LTD. 3 2 2 2 1 10
INFINEON TECHNOLOGIES AG 0 0 0 8 2 10
INTERNATIONAL POWER DEVICES, INC. 3 3 2 2 0 10
NORTHROP GRUMMAN CORPORATION 2 0 4 1 3 10
SANYO ELECTRIC CO., LTD. 1 2 3 3 1 10
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC 0 0 2 2 6 10
SGS-THOMSON MICROELECTRONICS S.R.L. 6 3 1 0 0 10
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 3 1 2 2 2 10
DENSO CORPORATION 1 2 2 4 0 9
GEC ALSTHOM TRANSPORT SA 3 4 1 1 0 9
ROBERT BOSCH GMBH 0 2 1 3 3 9
ROCKWELL TECHNOLOGIES, LLC 0 0 2 6 1 9
SANKEN ELECTRIC COMPANY LIMITED 1 0 1 2 5 9
SEIKO EPSON CORPORATION 0 0 0 5 4 9
TOKO, INC. 2 5 1 1 0 9
ALLEN BRADLEY COMPANY, LLC 2 5 1 0 0 8
DELL PRODUCTS, L.P. 2 1 2 3 0 8
ILLINOIS TOOL WORKS INC. 1 2 2 2 1 8
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 3 5 0 0 0 8
KABUSHIKI KAISHA YASKAWA DENKI 2 1 1 1 3 8
OTIS ELEVATOR COMPANY 1 0 6 0 1 8
PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCHE GLUHLAMPEN MBH 1 1 2 4 0 8
VLT CORPORATION 3 1 1 2 1 8
AMERICAN SUPERCONDUCTOR CORPORATION 3 1 0 0 3 7
FAIRCHILD SEMICONDUCTOR CORPORATION 0 1 0 0 6 7
HUGHES ELECTRONICS CORP. 0 1 3 3 0 7
RELIANCE ELECTRIC INDUSTRIAL COMPANY 1 5 1 0 0 7
TECHNICAL WITTS, INC. 0 0 2 2 3 7
THOMSON LICENSING S.A. 0 0 4 2 1 7
ABB PATENT GMBH 0 2 1 2 1 6
ACER PERIPHERALS, INC. 2 2 0 2 0 6
DAIMLER-CHRYSLER AKTIENGESELLSCHAFT 0 1 4 0 1 6
FUNAI ELECTRIC CO., LTD. 0 3 0 3 0 6
GENERAL MOTORS CORPORATION 1 1 2 2 0 6
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 1 3 0 1 1 6
HONEYWELL INTERNATIONAL INC. 0 0 0 5 1 6
IWATT, INC. 0 0 0 2 4 6
NAGANO JAPAN RADIO CO., LTD. 0 0 1 5 0 6
NATIONAL SEMICONDUCTOR CORPORATION 1 1 1 2 1 6
POWER-ONE, INC. 0 0 0 4 2 6
ROBICON CORPORATION 0 2 1 2 1 6
VIRGINIA POWER TECHNOLOGIES, INC 2 2 2 0 0 6
WISCONSIN ALUMNI RESEARCH FOUNDATION 2 3 1 0 0 6
ABB INDUSTRY OY 0 1 2 1 1 5
ARTESYN TECHNOLOGIES, INC. 0 0 1 2 2 5
COMPUTER PRODUCTS, INC. 1 2 2 0 0 5
CYPRESS SEMICONDUCTOR CORP. 2 2 0 0 1 5
DIGITAL EQUIPMENT CORPORATION 2 2 1 0 0 5
EATON CORPORATION 0 4 1 0 0 5
FAIRCHILD KOREA SEMICONDUCTOR, LTD. 0 0 2 2 1 5
FIDELIX Y.K. 0 0 2 1 2 5
LINFINITY MICROELECTRONICS, INC. 0 1 0 3 1 5
OKI ELECTRIC INDUSTRY CO., LTD. 1 1 1 2 0 5
SAMSUNG ELECTRO-MECHANICS CO., LTD. 1 1 1 1 1 5
STMICROELECTRONICS S.A. 0 0 2 1 2 5
SUNDSTRAND CORPORATION 3 2 0 0 0 5
UNIVERSITY OF HONG KONG 0 0 1 0 4 5
YOKOGAWA ELECTRIC CORP. 0 1 1 2 1 5


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