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U.S. PATENT AND TRADEMARK OFFICE
Patent Technology Monitoring Team (PTMT)

Patenting In Technology Classes,
Breakout By Organization

Count of 2005 - 2009 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 2005 2006 2007 2008 2009 Total
~INDIVIDUALLY OWNED PATENT 11 15 14 9 18 67
SANKEN ELECTRIC COMPANY LIMITED 7 8 17 16 17 65
SYSTEM-GENERAL CORPORATION 8 10 10 13 11 52
DELTA ELECTRONICS INC. 13 12 9 8 9 51
POWER INTEGRATIONS, INC. 6 10 6 11 16 49
ROHM COMPANY LIMITED 2 8 8 7 8 33
SONY CORPORATION 8 7 13 5 0 33
SAMSUNG ELECTRONICS CO., LTD. 6 7 1 6 6 26
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 6 8 7 4 0 25
INTERNATIONAL RECTIFIER CORPORATION 7 1 6 4 2 20
MITSUBISHI DENKI KABUSHIKI KAISHA 5 1 1 2 11 20
ROCKWELL AUTOMATION TECHNOLOGIES, INC. 1 0 7 3 9 20
ASTEC INTERNATIONAL, LTD. 2 5 3 3 6 19
O2 MICRO INTERNATIONAL LTD. 2 5 3 2 7 19
IWATT, INC. 7 1 1 3 6 18
KONINKLIJKE PHILIPS ELECTRONICS N.V. 4 8 2 1 3 18
GENERAL ELECTRIC COMPANY 1 2 2 6 6 17
HONEYWELL INTERNATIONAL INC. 4 2 3 4 3 16
COMARCO WIRELESS TECHNOLOGIES, INC. 2 4 3 3 3 15
MURATA MANUFACTURING CO., LTD. 3 3 1 4 4 15
ABB OY 4 4 1 2 3 14
DENSO CORPORATION 2 4 3 0 5 14
TDK CORPORATION 1 0 3 7 3 14
FAIRCHILD KOREA SEMICONDUCTOR, LTD. 2 5 2 1 3 13
SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC 0 1 0 6 6 13
INFINEON TECHNOLOGIES AG 0 6 2 4 0 12
TEXAS INSTRUMENTS, INCORPORATED 3 4 2 3 0 12
ZIPPY TECHNOLOGY CORP. 1 3 3 1 4 12
BALLARD POWER SYSTEMS CORPORATION 5 3 3 0 0 11
FAIRCHILD SEMICONDUCTOR CORPORATION 1 4 2 1 3 11
NIKO SEMICONDUCTOR CO., LTD. 3 2 4 2 0 11
SIEMENS AKTIENGESELLSCHAFT 4 0 1 1 5 11
VLT, INC. 2 1 2 3 3 11
GM GLOBAL TECHNOLOGY OPERATIONS, INC. 0 0 2 3 5 10
HITACHI, LTD 1 2 0 1 6 10
RENESAS TECHNOLOGY CORPORATION 1 1 4 1 3 10
VIRGINIA TECH INTELLECTUAL PROPERTIES, INC. 3 2 3 0 2 10
CAMBRIDGE SEMICONDUCTOR LIMITED 0 0 1 2 6 9
STMICROELECTRONICS S.A. 3 2 2 1 1 9
STMICROELECTRONICS S.R.L. 0 1 3 4 1 9
SYNQOR, INC. 1 3 3 0 2 9
THOMSON LICENSING S.A. 1 3 1 3 1 9
VACON OYJ 0 3 4 1 1 9
CANON KABUSHIKI KAISHA 3 1 1 2 1 8
LIEN CHANG ELECTRONIC ENTERPRISE CO., LTD. 0 1 3 4 0 8
LOCKHEED MARTIN CORPORATION 2 3 0 0 3 8
RICHTEK TECHNOLOGY CORP. 1 1 1 1 4 8
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 2 3 1 1 1 8
ANALOG DEVICES, INC. 0 1 0 1 5 7
FUJITSU LIMITED 4 0 1 1 1 7
KABUSHIKI KAISHA YASKAWA DENKI 0 4 0 0 3 7
SAMSUNG ELECTRO-MECHANICS CO., LTD. 2 2 1 0 2 7
TOSHIBA CORPORATION 3 0 0 2 2 7
TOYOTA JIDOSHA K.K. 0 2 1 3 1 7
ABB (SCHWEIZ) AG 0 0 1 2 3 6
ABB RESEARCH LTD. 1 0 1 1 3 6
DELL PRODUCTS, L.P. 0 1 3 0 2 6
DET INTERNATIONAL HOLDING LIMITED 0 3 0 2 1 6
FRIWO MOBILE POWER GMBH 0 2 2 2 0 6
LEADTREND TECHNOLOGY CORPORATION 0 1 0 1 4 6
LG ELECTRONICS INC. 0 1 0 2 3 6
LINEAR TECHNOLOGY CORPORATION 1 1 1 2 1 6
NATIONAL SEMICONDUCTOR CORPORATION 1 1 0 4 0 6
RICOH COMPANY, LTD. 2 1 1 0 2 6
SILICON LABORATORIES INC. 0 0 1 3 2 6
TYCO ELECTRONICS POWER SYSTEMS, INC. 1 4 1 0 0 6
ADVANCED ENERGY INDUSTRIES, INC. 1 1 1 1 1 5
CONTINENTAL AUTOMOTIVE SYSTEMS US, INC. 0 0 0 2 3 5
FUJI ELECTRIC DEVICE TECHNOLOGY CO., LTD. 0 0 2 1 2 5
GENERAL MOTORS CORPORATION 3 2 0 0 0 5
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 1 1 2 0 1 5
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI 0 0 0 2 3 5
KOITO MANUFACTURING COMPANY LIMITED 0 1 2 2 0 5
MKS INSTRUMENTS, INC. 0 0 2 2 1 5
NEC ELECTRONICS CORPORATION 0 0 1 2 2 5
NXP B.V. 0 0 3 2 0 5
SANSHA ELECTRIC MANUFACTURING CO., LTD. 1 0 0 2 2 5
SANYO ELECTRIC CO., LTD. 0 0 3 1 1 5
SHINDENGEN ELECTRIC MANUFACTURING CO., LTD 2 2 1 0 0 5
SIEMENS AKTIENGESELLSCHAFT OSTERREICH 0 1 1 1 2 5
WISCONSIN ALUMNI RESEARCH FOUNDATION 1 3 0 0 1 5


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

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