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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 2000 - 2004 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 431, Combustion

( 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 2000 2001 2002 2003 2004 Total
~Individually Owned Patent 61 69 38 62 52 282
BIC CORPORATION 6 3 7 1 3 20
TOKAI CORPORATION 9 3 0 4 1 17
PRAXAIR TECHNOLOGY, INC. 3 3 3 1 5 15
ALSTOM (SWITZERLAND) LTD 0 2 5 6 1 14
JOHN ZINK COMPANY 0 1 2 5 5 13
HONEYWELL INTERNATIONAL INC. 0 2 5 3 2 12
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE 2 3 1 3 3 12
AMERICAN AIR LIQUIDE, INC. 5 5 0 0 0 10
GENERAL ELECTRIC COMPANY 1 4 4 1 0 10
ABB RESEARCH LTD. 5 4 0 0 0 9
PRECISION COMBUSTION, INC. 2 3 2 1 1 9
CALICO BRANDS, INC. 0 3 4 1 0 8
GAS RESEARCH INSTITUTE 6 1 0 1 0 8
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 0 2 3 2 1 8
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 0 1 4 1 2 8
CARRIER CORPORATION 1 0 2 2 2 7
POLYCITY ENTERPRISE LIMITED 1 1 4 1 0 7
COLEMAN COMPANY INC. 2 1 2 0 1 6
SOURDILLON 0 1 0 3 2 6
ABB ALSTOM POWER (SCHWEIZ) AG 4 1 0 0 0 5
AIR PRODUCTS AND CHEMICALS, INC. 0 1 0 2 2 5
ASEA BROWN BOVERI AKTIENGESELLSCHAFT 2 2 1 0 0 5
BECKETT GAS, INC. 0 2 3 0 0 5
GENERAL MOTORS CORPORATION 0 0 0 1 4 5
MITSUBISHI HEAVY INDUSTRIES, LTD. 4 1 0 0 0 5
NORTH AMERICAN MANUFACTURING COMPANY 0 2 0 1 2 5
SIEMENS AKTIENGESELLSCHAFT 1 0 1 2 1 5
TOKYO GAS COMPANY LIMITED 3 0 0 0 2 5
WORGAS BRUCIATORI S.R.L. 1 1 1 1 1 5
ZEECO, INC. 0 0 3 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
MDW 4C18; P.O Box 1450
Alexandria VA 22313-1450

tel: (571) 272-5600
fax: (571) 273-0110
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
ftp download of selected PTMD reports and materials from : ftp.uspto.gov/pub/taf/


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