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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 392, Electric Resistance Heating Devices

( 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 12 23 23 22 13 93
DIAL CORPORATION 6 7 2 2 4 21
S. C. JOHNSON + SON, INC. 0 6 2 3 0 11
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 0 2 4 2 0 8
DAINIPPON SCREEN MFG. CO., LTD. 0 3 3 0 1 7
RHEEM MANUFACTURING COMPANY 1 4 1 1 0 7
VALEO ELECTRICAL SYSTEMS, INC. 1 5 0 1 0 7
MATTSON TECHNOLOGY, INC. 1 1 0 2 2 6
TOKYO ELECTRON LIMITED 0 4 2 0 0 6
APPLIED MATERIALS, INC. 1 2 2 0 0 5
DEKKO TECHNOLOGIES, INC. 1 1 2 1 0 5
RINNAI CORPORATION 1 3 1 0 0 5
USHIO DENKI KABUSHIKI KAISYA 1 1 1 1 1 5
ZOBELE ESPANA, S.A. 0 0 2 0 3 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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