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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 Geographic Origin (State and Country)

Count of 2004 - 2008 Utility Patent Grants,
As Distributed By Calendar Year of Grant
With Patent Counts Based on Primary Patent Classification

- Explanation of Data -

Rank Ordered Listing of U.S. States and Countries
From Which 1 or More Utility Patents Originated During the Period
Having Primary Classification In

Class 418, Rotary Expansible Chamber Devices

( technology class is determined by the primary classification assigned to a patent- see 'Explanation of Data' )
( patent origin is determined by the residence of the first-named inventor )

The following table displays U.S. states and countries and counts of utility patents originating from them; patents are distributed either by year of patent grant or by year of patent application.
(U.S. or Foreign) Code State-Territory or Country 2004 2005 2006 2007 2008 Total
(U.S.) MI MICHIGAN 13 5 6 5 3 32
(U.S.) OH OHIO 3 0 5 7 7 22
(U.S.) NY NEW YORK 6 4 5 2 4 21
(U.S.) AR ARKANSAS 5 3 1 5 2 16
(U.S.) TX TEXAS 1 2 2 2 2 9
(U.S.) MA MASSACHUSETTS 2 2 0 4 0 8
(U.S.) IN INDIANA 1 1 3 1 1 7
(U.S.) TN TENNESSEE 5 1 0 1 0 7
(U.S.) IL ILLINOIS 2 1 2 0 1 6
(U.S.) NC NORTH CAROLINA 2 1 1 2 0 6
(U.S.) CA CALIFORNIA 2 0 1 0 2 5
(U.S.) FL FLORIDA 0 1 2 2 0 5
(U.S.) MN MINNESOTA 3 0 1 1 0 5
(U.S.) WA WASHINGTON 1 1 1 2 0 5
(U.S.) IA IOWA 1 2 0 0 1 4
(U.S.) MO MISSOURI 2 1 1 0 0 4
(U.S.) PA PENNSYLVANIA 0 1 3 0 0 4
(U.S.) KY KENTUCKY 0 1 0 1 1 3
(U.S.) WI WISCONSIN 1 2 0 0 0 3
(U.S.) AL ALABAMA 1 0 0 1 0 2
(U.S.) CT CONNECTICUT 1 0 1 0 0 2
(U.S.) GA GEORGIA 2 0 0 0 0 2
(U.S.) MD MARYLAND 0 0 1 0 1 2
(U.S.) AZ ARIZONA 0 0 0 0 1 1
(U.S.) LA LOUISIANA 1 0 0 0 0 1
(U.S.) OK OKLAHOMA 0 0 0 0 1 1
(U.S.) VA VIRGINIA 1 0 0 0 0 1
(U.S.)   -- Subtotal -- 56 29 36 36 27 184
(Foreign) JPX JAPAN 35 33 44 44 55 211
(Foreign) KRX KOREA, SOUTH 9 8 10 17 22 66
(Foreign) DEX GERMANY 15 9 12 8 15 59
(Foreign) TWX TAIWAN 5 2 6 4 3 20
(Foreign) GBX UNITED KINGDOM 3 1 0 5 3 12
(Foreign) CAX CANADA 1 2 3 1 2 9
(Foreign) FRX FRANCE 1 3 1 1 1 7
(Foreign) ITX ITALY 3 1 1 2 0 7
(Foreign) DKX DENMARK 3 2 0 0 1 6
(Foreign) ATX AUSTRIA 1 1 2 0 0 4
(Foreign) CHX SWITZERLAND 2 0 1 0 1 4
(Foreign) AUX AUSTRALIA 0 2 0 0 1 3
(Foreign) BEX BELGIUM 1 1 1 0 0 3
(Foreign) FIX FINLAND 0 1 1 1 0 3
(Foreign) NLX NETHERLANDS 2 0 1 0 0 3
(Foreign) SEX SWEDEN 2 0 0 1 0 3
(Foreign) RUX RUSSIAN FEDERATION 0 0 1 1 0 2
(Foreign) BRX BRAZIL 0 0 0 0 1 1
(Foreign) CNX CHINA, PEOPLE'S REPUBLIC OF 1 0 0 0 0 1
(Foreign) CZX CZECH REPUBLIC 0 0 1 0 0 1
(Foreign) FJX FIJI 1 0 0 0 0 1
(Foreign) ILX ISRAEL 1 0 0 0 0 1
(Foreign) KWX KUWAIT 0 0 1 0 0 1
(Foreign) PLX POLAND 0 0 0 0 1 1
(Foreign)   -- Subtotal -- 86 66 86 85 106 429
(ALL) ALL All Regions, U.S. and Foreign 142 95 122 121 133 613


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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