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

Patenting In Technology Classes,
Breakout By Organization

Count of 2004 - 2008 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 2004 2005 2006 2007 2008 Total
~INDIVIDUALLY OWNED PATENT 13 11 15 14 9 62
SANKEN ELECTRIC COMPANY LIMITED 3 7 8 17 16 51
DELTA ELECTRONICS INC. 5 13 12 9 8 47
SYSTEM-GENERAL CORPORATION 6 8 10 10 13 47
POWER INTEGRATIONS, INC. 9 6 10 6 11 42
SONY CORPORATION 7 8 7 13 5 40
KONINKLIJKE PHILIPS ELECTRONICS N.V. 16 4 8 2 1 31
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 1 6 8 7 4 26
ROHM COMPANY LIMITED 0 2 8 8 7 25
SAMSUNG ELECTRONICS CO., LTD. 3 6 7 1 6 23
INTERNATIONAL RECTIFIER CORPORATION 4 7 1 6 4 22
MITSUBISHI DENKI KABUSHIKI KAISHA 8 5 1 1 2 17
O2 MICRO INTERNATIONAL LTD. 4 2 5 3 2 16
ASTEC INTERNATIONAL, LTD. 2 2 5 3 3 15
GENERAL ELECTRIC COMPANY 4 1 2 2 6 15
HONEYWELL INTERNATIONAL INC. 2 4 2 3 4 15
MURATA MANUFACTURING CO., LTD. 4 3 3 1 4 15
TDK CORPORATION 4 1 0 3 7 15
TEXAS INSTRUMENTS, INCORPORATED 3 3 4 2 3 15
COMARCO WIRELESS TECHNOLOGIES, INC. 2 2 4 3 3 14
INFINEON TECHNOLOGIES AG 2 0 6 2 4 14
SIEMENS AKTIENGESELLSCHAFT 8 4 0 1 1 14
BALLARD POWER SYSTEMS CORPORATION 2 5 3 3 0 13
IWATT, INC. 0 7 1 1 3 12
NIKO SEMICONDUCTOR CO., LTD. 1 3 2 4 2 12
ABB OY 0 4 4 1 2 11
DENSO CORPORATION 2 2 4 3 0 11
ROCKWELL AUTOMATION TECHNOLOGIES, INC. 0 1 0 7 3 11
VIRGINIA TECH INTELLECTUAL PROPERTIES, INC. 3 3 2 3 0 11
FAIRCHILD KOREA SEMICONDUCTOR, LTD. 0 2 5 2 1 10
CANON KABUSHIKI KAISHA 2 3 1 1 2 9
HITACHI, LTD 5 1 2 0 1 9
RENESAS TECHNOLOGY CORPORATION 2 1 1 4 1 9
STMICROELECTRONICS S.R.L. 1 0 1 3 4 9
TOSHIBA CORPORATION 4 3 0 0 2 9
TYCO ELECTRONICS POWER SYSTEMS, INC. 3 1 4 1 0 9
VACON OYJ 1 0 3 4 1 9
FAIRCHILD SEMICONDUCTOR CORPORATION 0 1 4 2 1 8
FUJITSU LIMITED 2 4 0 1 1 8
LIEN CHANG ELECTRONIC ENTERPRISE CO., LTD. 0 0 1 3 4 8
MOBILITY ELECTRONICS, INC. 4 3 1 0 0 8
SANYO ELECTRIC CO., LTD. 4 0 0 3 1 8
STMICROELECTRONICS S.A. 0 3 2 2 1 8
SYNQOR, INC. 1 1 3 3 0 8
THOMSON LICENSING S.A. 0 1 3 1 3 8
VLT, INC. 0 2 1 2 3 8
ZIPPY TECHNOLOGY CORP. 0 1 3 3 1 8
ARTESYN TECHNOLOGIES, INC. 3 2 0 1 1 7
KABUSHIKI KAISHA YASKAWA DENKI 3 0 4 0 0 7
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC 0 0 1 0 6 7
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 0 2 3 1 1 7
TOYOTA JIDOSHA K.K. 1 0 2 1 3 7
ADVANCED ENERGY INDUSTRIES, INC. 2 1 1 1 1 6
FRIWO MOBILE POWER GMBH 0 0 2 2 2 6
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 3 0 3 0 0 6
INTEL CORPORATION 2 0 1 1 2 6
KOITO MANUFACTURING COMPANY LIMITED 1 0 1 2 2 6
LOCKHEED MARTIN CORPORATION 1 2 3 0 0 6
NATIONAL SEMICONDUCTOR CORPORATION 0 1 1 0 4 6
SAMSUNG ELECTRO-MECHANICS CO., LTD. 1 2 2 1 0 6
SEIKO EPSON CORPORATION 2 1 2 1 0 6
SEMTECH CORPORATION 3 0 3 0 0 6
SHINDENGEN ELECTRIC MANUFACTURING CO., LTD 1 2 2 1 0 6
UNIVERSITY OF CENTRAL FLORIDA 2 1 0 1 2 6
ABB (SCHWEIZ) AG 2 0 0 1 2 5
ALCATEL 3 0 1 1 0 5
BOEING COMPANY 3 1 0 0 1 5
DET INTERNATIONAL HOLDING LIMITED 0 0 3 0 2 5
DI/DT, INC. 4 0 1 0 0 5
EMERSON NETWORK POWER CO., LTD. 2 1 2 0 0 5
GENERAL MOTORS CORPORATION 0 3 2 0 0 5
GM GLOBAL TECHNOLOGY OPERATIONS, INC. 0 0 0 2 3 5
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 1 1 1 2 0 5
INTERSIL AMERICAS INC. 1 0 4 0 0 5
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI 3 0 0 0 2 5
LINEAR TECHNOLOGY CORPORATION 0 1 1 1 2 5
NXP B.V. 0 0 0 3 2 5
SEMIKRON ELEKTRONIK GMBH 3 0 0 0 2 5


PTMT Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Electronic Information Products Division - PTMT
P.O Box 1450
Alexandria VA 22313-1450

tel: (571) 272-5600
fax: (571) 273-0110
email: oeip@uspto.gov

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


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