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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 Geographic Origin (State and Country)

Count of 1998 - 2002 Utility Patent Grants,
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 the 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 by year of patent grant
(U.S. or Foreign) Code State-Territory or Country 1998 1999 2000 2001 2002 Total
(U.S.) MI MICHIGAN 6 6 18 5 8 43
(U.S.) AR ARKANSAS 1 1 11 15 14 42
(U.S.) OH OHIO 5 3 14 12 7 41
(U.S.) NY NEW YORK 6 3 15 10 6 40
(U.S.) MN MINNESOTA 1 1 14 2 2 20
(U.S.) TX TEXAS 6 1 2 9 2 20
(U.S.) VA VIRGINIA 0 0 8 5 6 19
(U.S.) CA CALIFORNIA 3 4 3 4 0 14
(U.S.) IL ILLINOIS 1 1 6 1 3 12
(U.S.) CT CONNECTICUT 3 3 1 2 2 11
(U.S.) OK OKLAHOMA 2 0 3 1 2 8
(U.S.) KY KENTUCKY 0 0 3 2 2 7
(U.S.) NC NORTH CAROLINA 0 0 1 4 2 7
(U.S.) PA PENNSYLVANIA 2 1 2 1 1 7
(U.S.) WI WISCONSIN 0 2 4 1 0 7
(U.S.) SC SOUTH CAROLINA 0 0 1 4 1 6
(U.S.) IN INDIANA 1 0 1 1 2 5
(U.S.) MA MASSACHUSETTS 3 1 1 0 0 5
(U.S.) FL FLORIDA 0 1 1 0 2 4
(U.S.) IA IOWA 0 0 2 1 1 4
(U.S.) NJ NEW JERSEY 1 0 0 3 0 4
(U.S.) GA GEORGIA 0 0 1 1 0 2
(U.S.) ID IDAHO 0 0 1 0 1 2
(U.S.) KS KANSAS 0 0 0 2 0 2
(U.S.) NM NEW MEXICO 0 1 0 1 0 2
(U.S.) TN TENNESSEE 1 0 0 0 1 2
(U.S.) UT UTAH 0 0 1 1 0 2
(U.S.) AL ALABAMA 0 0 1 0 0 1
(U.S.) AZ ARIZONA 0 0 1 0 0 1
(U.S.) LA LOUISIANA 0 0 0 0 1 1
(U.S.) MD MARYLAND 0 0 0 1 0 1
(U.S.) MT MONTANA 0 0 1 0 0 1
(U.S.) NE NEBRASKA 0 1 0 0 0 1
(U.S.) VT VERMONT 0 0 1 0 0 1
(U.S.) WA WASHINGTON 0 0 0 0 1 1
(U.S.)   -- Subtotal -- 42 30 118 89 67 346
(Foreign) JPX JAPAN 55 38 91 80 45 309
(Foreign) DEX GERMANY 10 10 24 17 18 79
(Foreign) TWX TAIWAN 1 2 8 9 5 25
(Foreign) GBX UNITED KINGDOM 3 4 3 10 4 24
(Foreign) KRX SOUTH KOREA 5 0 7 5 6 23
(Foreign) CHX SWITZERLAND 1 1 6 3 3 14
(Foreign) NLX NETHERLANDS 2 0 2 2 5 11
(Foreign) AUX AUSTRALIA 1 1 2 3 2 9
(Foreign) CAX CANADA 2 0 3 1 3 9
(Foreign) SEX SWEDEN 2 2 0 2 2 8
(Foreign) DKX DENMARK 1 0 4 2 0 7
(Foreign) FRX FRANCE 0 1 4 0 2 7
(Foreign) BEX BELGIUM 1 2 2 0 1 6
(Foreign) ITX ITALY 2 1 0 1 1 5
(Foreign) ATX AUSTRIA 0 0 2 1 1 4
(Foreign) RUX RUSSIAN FEDERATION 1 0 0 2 1 4
(Foreign) CNX CHINA P.REP. 0 0 0 1 2 3
(Foreign) FIX FINLAND 0 1 1 1 0 3
(Foreign) CZX CZECH REPUBLIC 0 0 1 0 1 2
(Foreign) ILX ISRAEL 0 0 2 0 0 2
(Foreign) NOX NORWAY 0 0 0 1 1 2
(Foreign) EEX ESTONIA 0 0 1 0 0 1
(Foreign) PTX PORTUGAL 0 0 0 1 0 1
(Foreign) UAX UKRAINE 0 1 0 0 0 1
(Foreign)   -- Subtotal -- 87 64 163 142 103 559
(ALL) ALL All Regions, U.S. and Foreign 129 94 281 231 170 905


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U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD
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Alexandria VA 22313

tel: (703) 306-2600
fax: (703) 306-2737
email: oeip@uspto.gov

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