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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 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.
LG ELECTRONICS INC.
6
4
7
12
21
50
~INDIVIDUALLY OWNED PATENT
14
10
11
6
9
50
ANEST IWATA CORPORATION
4
3
9
9
8
33
SCROLL TECHNOLOGIES, INC.
7
5
1
7
4
24
SANYO ELECTRIC CO., LTD.
3
2
4
5
8
22
DAIKIN INDUSTRIES LIMITED
0
6
2
2
5
15
HITACHI, LTD
2
1
3
3
6
15
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
5
2
3
3
2
15
CARRIER CORPORATION
7
2
4
1
0
14
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
1
3
1
4
5
14
TECUMSEH PRODUCTS COMPANY
5
2
4
1
2
14
SAMSUNG ELECTRONICS CO., LTD.
1
3
3
5
1
13
SANDEN CORPORATION
3
0
0
6
3
12
EMERSON CLIMATE TECHNOLOGIES, INC.
0
0
0
3
7
10
PARKER-HANNIFIN CORPORATION
6
1
0
2
0
9
DENSO CORPORATION
3
0
1
3
1
8
EATON CORPORATION
5
0
1
1
0
7
HONDA GIKEN KOGYO KABUSHIKI KAISHA (HONDA MOTOR CO., LTD.)
1
1
3
1
0
6
MITSUBISHI HEAVY INDUSTRIES, LTD.
3
1
0
0
2
6
RECHI PRECISION CO., LTD.
4
1
1
0
0
6
SAUER-DANFOSS (NORDBERG) A/S
3
2
0
0
1
6
1564330 ONTARIO, INC.
0
1
2
1
1
5
COPELAND CORPORATION
3
0
1
1
0
5
VARIAN, INC.
1
1
0
3
0
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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