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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 055, Gas Separation

( 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 29 16 21 18 25 109
DONALDSON COMPANY, INC. 6 6 10 13 16 51
SAMSUNG KWANG-JU ELECTRONICS CO., LTD. 4 4 10 10 17 45
NGK INSULATORS LTD. 2 3 7 6 10 28
3M INNOVATIVE PROPERTIES COMPANY 4 3 2 4 5 18
FLEETGUARD, INC. 4 4 2 3 2 15
MANN & HUMMEL GMBH 0 2 4 5 4 15
IBIDEN CO., LTD. 0 0 1 2 11 14
LG ELECTRONICS INC. 2 1 1 3 5 12
CORNING INCORPORATED 2 2 1 5 1 11
HONEYWELL INTERNATIONAL INC. 1 1 3 1 5 11
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.) 3 1 2 0 3 9
DENSO CORPORATION 5 2 0 0 1 8
DYSON LIMITED 2 1 4 0 0 7
SAMSUNG ELECTRONICS CO., LTD. 0 1 1 2 3 7
ALFA LAVAL CORPORATE AB 0 0 5 0 1 6
ANDREAS STIHL AG & CO. 1 1 1 3 0 6
BHA GROUP HOLDINGS, INC. 3 1 1 1 0 6
BABCOCK & WILCOX COMPANY 0 3 0 2 0 5
BOSCH SIEMENS HAUSGERATE GMBH 0 1 1 0 3 5
CATERPILLAR INC. 0 0 0 3 2 5
FILTERWERK MANN + HUMMEL GMBH 3 2 0 0 0 5
PARKER HANNIFIN (UK) LTD. 0 0 0 0 5 5
ROBERT BOSCH GMBH 2 2 1 0 0 5
SHELL OIL COMPANY 0 1 1 1 2 5
THE HOOVER COMPANY 0 0 0 4 1 5
TOYOTA JIDOSHA K.K. 1 1 3 0 0 5
VISTEON GLOBAL TECHNOLOGIES, INC. 1 2 1 0 1 5
WIX FILTRATION CORP. 0 0 2 1 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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