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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 136, Batteries: Thermoelectric and Photoelectric

( 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
CANON KABUSHIKI KAISHA 15 12 29 33 13 102
~Individually Owned Patent 14 9 22 14 18 77
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 2 1 6 4 9 22
KANEKA CORPORATION 0 0 0 10 9 19
SANYO ELECTRIC CO., LTD. 0 3 4 2 7 16
JX CRYSTALS, INC. 0 2 3 6 4 15
HUGHES ELECTRONICS CORP. 1 3 3 1 3 11
MIDWEST RESEARCH INSTITUTE 1 3 1 5 0 10
NGK INSULATORS LTD. 0 6 1 3 0 10
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 1 2 2 2 2 9
TOYOTA JIDOSHA K.K. 1 5 3 0 0 9
UNITED STATES OF AMERICA, DEPARTMENT OF ENERGY 3 1 4 1 0 9
CITIZEN WATCH CO., LTD. 2 0 0 3 3 8
INTERNATIONAL BUSINESS MACHINES CORPORATION 0 0 1 3 4 8
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. 2 2 3 1 0 8
BOEING COMPANY 0 1 2 3 1 7
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 0 2 3 1 1 7
TECSTAR POWER SYSTEMS, INC. 0 0 2 3 2 7
ADVANCED MODULAR POWER SYSTEMS, INC. 0 5 0 1 0 6
CALIFORNIA INSTITUTE OF TECHNOLOGY, INC. 2 0 1 1 2 6
FUJI ELECTRIC CO., LTD. 1 3 0 1 1 6
FUJI XEROX CO., LTD. 0 0 2 3 1 6
MARLOW INDUSTRIES, INC. 0 0 0 3 3 6
MITSUBISHI DENKI KABUSHIKI KAISHA 2 0 2 0 2 6
TRW INC. 0 0 1 1 4 6
AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY 0 0 0 2 3 5
ASTROPOWER, INC. 0 0 1 2 2 5
EVERGREEN SOLAR, INC. 2 1 0 2 0 5
FUJI PHOTO FILM CO., LTD 0 0 1 1 3 5
SANDIA CORPORATION 1 3 1 0 0 5
SEIKO INSTRUMENTS INC. 1 0 0 3 1 5
UNIVERSITY OF HOUSTON, CENTRAL CAMPUS 2 0 2 0 1 5
YAMAHA CORPORATION 1 1 1 1 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
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