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

Patenting In Technology Classes,
Breakout By Organization

Count of 2007 - 2011 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 418, Rotary Expansible Chamber 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 2007 2008 2009 2010 2011 Total
LG ELECTRONICS INC. 12 21 12 10 6 61
~INDIVIDUALLY OWNED PATENT 6 9 12 15 7 49
EMERSON CLIMATE TECHNOLOGIES, INC. 3 7 4 7 20 41
SANYO ELECTRIC CO., LTD. 5 8 15 2 1 31
DAIKIN INDUSTRIES LIMITED 2 5 12 8 3 30
ANEST IWATA CORPORATION 9 8 3 2 3 25
HITACHI, LTD 3 6 0 5 5 19
SCROLL TECHNOLOGIES, INC. 7 4 2 3 2 18
SANDEN CORPORATION 6 3 0 3 2 14
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 4 5 2 1 0 12
MITSUBISHI HEAVY INDUSTRIES, LTD. 0 2 2 3 5 12
SAMSUNG ELECTRONICS CO., LTD. 5 1 1 4 1 12
CARRIER CORPORATION 1 0 2 2 4 9
DENSO CORPORATION 3 1 1 1 3 9
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI 3 2 3 1 0 9
MAGNA POWERTRAIN, INC. 0 0 1 3 5 9
EATON CORPORATION 1 0 2 2 2 7
TECUMSEH PRODUCTS COMPANY 1 2 1 0 3 7
BITZER KUEHLMASCHINENBAU GMBH 1 0 1 0 4 6
DANFOSS COMMERCIAL COMPRESSORS 1 0 0 3 2 6
FUJITSU GENERAL LIMITED 0 2 0 3 1 6
GM GLOBAL TECHNOLOGY OPERATIONS, INC. 0 0 1 1 4 6
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, TAIWAN 3 1 1 1 0 6
MITSUBISHI DENKI KABUSHIKI KAISHA 0 0 1 4 1 6
YAMADA MANUFACTURING CO., LTD. 0 2 2 0 2 6
HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD. 0 0 1 2 2 5
NETZSCH-MOHNOPUMPEN-GMBH 0 1 1 0 3 5
PANASONIC CORPORATION 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
selected PTMT files available for download at : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/data/


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