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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 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 2001 2002 2003 2004 2005 Total
~Individually Owned Patent 32 32 19 13 11 107
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 20 15 16 4 55
SONY CORPORATION 13 19 8 7 8 55
DELTA ELECTRONICS INC. 5 15 13 5 13 51
MITSUBISHI DENKI KABUSHIKI KAISHA 14 9 8 8 5 44
HITACHI, LTD 8 16 13 5 1 43
MURATA MANUFACTURING CO., LTD. 13 9 11 4 3 40
POWER INTEGRATIONS, INC. 4 8 5 9 6 32
SIEMENS AKTIENGESELLSCHAFT 10 5 1 8 4 28
SANKEN ELECTRIC COMPANY LIMITED 2 5 9 3 7 26
TOSHIBA CORPORATION 7 6 6 4 3 26
GENERAL ELECTRIC COMPANY 10 6 3 4 1 24
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 5 10 2 1 6 24
TEXAS INSTRUMENTS, INCORPORATED 8 4 5 3 3 23
ASTEC INTERNATIONAL, LTD. 7 7 2 2 2 20
SAMSUNG ELECTRONICS CO., LTD. 6 5 0 3 6 20
INFINEON TECHNOLOGIES AG 8 2 7 2 0 19
INTEL CORPORATION 5 5 7 2 0 19
INTERNATIONAL BUSINESS MACHINES CORPORATION 4 11 2 1 1 19
FUJI ELECTRIC CO., LTD. 3 7 4 2 2 18
FUJITSU LIMITED 4 4 4 2 4 18
INTERNATIONAL RECTIFIER CORPORATION 3 2 2 4 7 18
SYSTEM-GENERAL CORPORATION 0 1 3 6 8 18
POWERWARE CORPORATION 9 3 3 1 1 17
TDK CORPORATION 3 3 5 4 1 16
ASEA BROWN BOVERI AB 4 6 3 0 1 14
CANON KABUSHIKI KAISHA 4 2 3 2 3 14
HONEYWELL INTERNATIONAL INC. 5 1 2 2 4 14
IWATT, INC. 2 4 0 0 7 13
ALCATEL 6 2 1 3 0 12
ARTESYN TECHNOLOGIES, INC. 2 2 3 3 2 12
LUCENT TECHNOLOGIES INC. 12 0 0 0 0 12
SEIKO EPSON CORPORATION 5 4 0 2 1 12
STMICROELECTRONICS S.R.L. 3 8 0 1 0 12
NEC CORPORATION 3 5 2 0 1 11
SANYO ELECTRIC CO., LTD. 3 1 3 4 0 11
U.S. PHILIPS CORPORATION 7 4 0 0 0 11
VIRGINIA TECH INTELLECTUAL PROPERTIES, INC. 1 2 2 3 3 11
BALLARD POWER SYSTEMS CORPORATION 0 1 2 2 5 10
FAIRCHILD SEMICONDUCTOR CORPORATION 0 6 3 0 1 10
O2 MICRO INTERNATIONAL LTD. 1 2 2 3 2 10
DENSO CORPORATION 4 0 1 2 2 9
MOBILITY ELECTRONICS, INC. 0 0 2 4 3 9
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC 2 6 1 0 0 9
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 2 2 3 0 2 9
ADVANCED ENERGY INDUSTRIES, INC. 1 1 3 2 1 8
BOEING COMPANY 0 3 1 3 1 8
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 1 1 4 1 1 8
ILLINOIS TOOL WORKS INC. 2 1 3 1 1 8
STMICROELECTRONICS S.A. 1 2 2 0 3 8
TELEFONAKTIEBOLAGET LM ERICSSON 2 5 0 0 1 8
ERICSSON, INC. 4 3 0 0 0 7
ROBERT BOSCH GMBH 3 3 1 0 0 7
ROCKWELL TECHNOLOGIES, LLC 6 1 0 0 0 7
SANSHA ELECTRIC MANUFACTURING CO., LTD. 3 1 1 1 1 7
TECHNICAL WITTS, INC. 2 3 1 0 1 7
UNIVERSITY OF HONG KONG 0 4 1 1 1 7
COMARCO WIRELESS TECHNOLOGIES, INC. 2 0 0 2 2 6
FAIRCHILD KOREA SEMICONDUCTOR, LTD. 2 1 1 0 2 6
KABUSHIKI KAISHA YASKAWA DENKI 1 3 0 2 0 6
KOKUSAN DENKI CO., LTD 2 1 2 1 0 6
LG ELECTRONICS INC. 3 3 0 0 0 6
MASSACHUSETTS INSTITUTE OF TECHNOLOGY 1 1 1 1 2 6
MOTOROLA, INC. 2 4 0 0 0 6
NORTHROP GRUMMAN CORPORATION 1 3 0 1 1 6
PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCHE GLUHLAMPEN MBH 4 0 2 0 0 6
POWER-ONE, INC. 4 2 0 0 0 6
ROCKWELL AUTOMATION TECHNOLOGIES, INC. 0 4 1 0 1 6
THOMSON LICENSING S.A. 2 1 2 0 1 6
TYCO ELECTRONICS POWER SYSTEMS, INC. 0 0 2 3 1 6
YOKOGAWA ELECTRIC CORP. 2 1 0 0 3 6
ABB (SCHWEIZ) AG 1 1 1 2 0 5
ALSTOM 0 1 1 2 1 5
AMERICAN SUPERCONDUCTOR CORPORATION 0 3 0 1 1 5
DENSEI-LAMBDA KABUSHIKI KAISHA 0 2 2 1 0 5
DI/DT, INC. 0 0 1 4 0 5
FIDELIX Y.K. 1 2 0 1 1 5
FUNAI ELECTRIC CO., LTD. 3 0 1 1 0 5
GENERAL MOTORS CORPORATION 2 0 0 0 3 5
HEWLETT-PACKARD COMPANY 1 3 1 0 0 5
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 0 0 2 3 0 5
LINFINITY MICROELECTRONICS, INC. 3 1 1 0 0 5
NAGANO JAPAN RADIO CO., LTD. 5 0 0 0 0 5
NOKIA CORPORATION 2 0 2 1 0 5
OKI ELECTRIC INDUSTRY CO., LTD. 2 0 2 1 0 5
PHILIPS ELECTRONICS NORTH AMERICA CORP. 2 3 0 0 0 5
SAMSUNG ELECTRO-MECHANICS CO., LTD. 1 1 0 1 2 5
SEMTECH CORPORATION 1 0 1 3 0 5
SHINDENGEN ELECTRIC MANUFACTURING CO., LTD 1 0 1 1 2 5
SWITCH POWER, INC. 3 1 1 0 0 5
SYNQOR, INC. 1 0 2 1 1 5
UNIVERSITY OF CENTRAL FLORIDA 0 0 2 2 1 5


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Electronic Information Products Division - PTMB
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Alexandria VA 22313-1450

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

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