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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 1963 - 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 507, Earth Boring, Well Treating, and Oil Field Chemistry

( 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 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Total
(U.S.) TX TEXAS 6 3 10 11 4 9 6 15 12 13 9 10 17 18 13 11 9 26 17 19 14 25 28 20 15 15 9 12 18 26 20 11 6 13 23 22 29 34 26 13 23 27 23 37 31 22 780
(U.S.) OK OKLAHOMA 13 3 8 9 6 11 6 4 9 6 8 7 11 12 9 11 10 14 15 16 9 27 25 13 11 9 7 5 8 3 5 3 12 10 10 8 8 5 7 3 11 13 7 6 15 11 439
(U.S.) NJ NEW JERSEY 0 0 3 1 3 1 0 0 1 3 1 0 1 0 1 7 3 2 2 3 3 17 18 9 4 1 1 2 6 7 0 1 1 1 5 4 1 1 1 1 4 2 0 1 3 4 130
(U.S.) CA CALIFORNIA 8 2 1 3 3 0 1 3 2 8 8 2 2 10 9 6 0 4 3 7 0 1 0 0 1 3 2 2 5 4 4 1 2 0 6 1 1 0 2 1 1 0 0 1 1 3 124
(U.S.) LA LOUISIANA 0 0 0 0 1 1 1 0 0 4 2 0 0 0 0 0 0 0 0 2 6 2 2 2 4 3 3 1 4 5 0 2 1 1 1 3 2 3 3 6 6 10 3 5 3 3 95
(U.S.) PA PENNSYLVANIA 1 0 5 0 1 2 1 1 2 1 0 1 1 5 1 1 0 3 1 1 3 2 1 2 1 3 4 3 5 2 1 0 1 0 4 2 2 1 0 2 1 1 1 1 2 1 74
(U.S.) IL ILLINOIS 4 0 1 0 0 1 0 2 2 4 0 0 0 2 0 5 2 0 1 0 3 2 5 0 3 2 1 0 0 0 0 2 0 0 0 0 1 1 1 0 0 0 1 0 0 0 46
(U.S.) CO COLORADO 0 0 0 0 0 0 0 2 0 2 2 2 3 5 3 1 2 1 1 0 3 2 3 0 2 1 0 1 1 1 0 0 0 0 2 2 0 1 0 0 0 0 0 1 0 0 44
(U.S.) MO MISSOURI 0 1 2 0 2 0 3 1 1 3 2 0 0 1 1 0 1 0 0 8 1 0 3 1 1 1 0 0 0 2 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 37
(U.S.) OH OHIO 0 0 0 1 0 0 0 1 0 0 0 0 0 0 1 0 1 1 1 2 0 2 2 2 0 0 1 2 1 0 1 2 0 0 5 4 0 0 1 0 0 1 0 1 0 1 34
(U.S.) MI MICHIGAN 2 1 0 3 0 0 0 0 0 0 1 0 0 1 0 0 1 0 1 1 2 4 1 1 2 4 3 0 2 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 32
(U.S.) NY NEW YORK 1 1 2 3 0 0 0 0 0 7 2 0 1 1 1 0 0 1 0 1 0 0 2 1 0 2 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 31
(U.S.) MD MARYLAND 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 6 2 10 1 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 25
(U.S.) DE DELAWARE 0 1 0 1 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 0 1 1 4 1 2 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 18
(U.S.) WA WASHINGTON 0 1 3 2 0 1 1 1 0 2 0 0 0 2 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18
(U.S.) CT CONNECTICUT 1 0 1 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 1 1 3 2 2 2 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17
(U.S.) IN INDIANA 3 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 2 0 0 0 0 0 0 3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12
(U.S.) MN MINNESOTA 1 0 1 0 0 0 2 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 1 1 0 0 0 12
(U.S.) MA MASSACHUSETTS 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 7
(U.S.) KS KANSAS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 2 0 0 0 0 6
(U.S.) TN TENNESSEE 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 1 0 1 0 0 6
(U.S.) WV WEST VIRGINIA 0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
(U.S.) AZ ARIZONA 1 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 5
(U.S.) IA IOWA 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 0 5
(U.S.) SC SOUTH CAROLINA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 5
(U.S.) WI WISCONSIN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 5
(U.S.) NC NORTH CAROLINA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 4
(U.S.) FL FLORIDA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
(U.S.) KY KENTUCKY 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
(U.S.) AK ALASKA 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 2
(U.S.) GA GEORGIA 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 2
(U.S.) ND NORTH DAKOTA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
(U.S.) NV NEVADA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 2
(U.S.) WY WYOMING 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
(U.S.) AR ARKANSAS 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
(U.S.) MT MONTANA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1
(U.S.) NM NEW MEXICO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1
(U.S.) OR OREGON 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
(U.S.) UT UTAH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
(U.S.)   -- Subtotal -- 42 13 38 36 20 29 24 31 29 55 39 26 36 57 40 44 29 53 49 70 49 102 97 63 52 50 37 33 55 52 32 26 23 26 57 49 47 47 46 28 49 61 37 57 56 47 2038
 
(Foreign) GBX UNITED KINGDOM 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 1 0 0 0 1 0 1 5 1 4 2 2 4 0 2 0 2 1 0 3 2 1 2 7 1 3 7 4 5 6 9 78
(Foreign) DEX GERMANY 0 0 0 0 2 0 0 0 1 0 1 1 1 0 1 3 0 0 1 4 0 3 2 3 1 1 3 4 4 1 4 5 3 2 1 4 1 4 3 4 3 2 1 0 1 1 76
(Foreign) FRX FRANCE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 1 3 4 2 3 0 2 2 1 2 1 0 3 4 4 3 1 2 2 3 3 2 1 6 1 60
(Foreign) CAX CANADA 0 0 2 0 0 2 1 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 1 3 0 1 0 0 0 0 0 1 1 2 2 4 3 4 4 3 3 3 2 1 3 48
(Foreign) NLX NETHERLANDS 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 0 1 1 0 1 0 0 1 1 0 1 0 2 0 0 0 0 0 0 1 0 1 2 1 0 1 3 1 1 1 23
(Foreign) ITX ITALY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 1 3 2 1 0 0 0 0 2 4 1 0 0 0 0 18
(Foreign) JPX JAPAN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 6 2 1 0 0 0 0 0 0 1 0 1 0 0 0 1 0 0 0 0 0 0 0 17
(Foreign) VEX VENEZUELA 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 2 0 0 0 1 2 0 0 0 0 9
(Foreign) NOX NORWAY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 0 1 1 1 6
(Foreign) BEX BELGIUM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 1 1 1 0 0 0 0 5
(Foreign) BRX BRAZIL 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 1 0 0 1 1 5
(Foreign) CNX CHINA, PEOPLE'S REPUBLIC OF 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 4
(Foreign) ILX ISRAEL 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 3
(Foreign) KWX KUWAIT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
(Foreign) MXX MEXICO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2
(Foreign) RUX RUSSIAN FEDERATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2
(Foreign) ZAX SOUTH AFRICA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 2
(Foreign) AEX UNITED ARAB EMIRATES 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
(Foreign) AZX AZERBAIJAN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1
(Foreign) CHX SWITZERLAND 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
(Foreign) CZX CZECH REPUBLIC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1
(Foreign) ESX SPAIN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1
(Foreign) SAX SAUDI ARABIA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1
(Foreign) SEX SWEDEN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
(Foreign) SGX SINGAPORE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1
(Foreign)   -- Subtotal -- 0 0 2 0 2 2 1 0 2 2 1 2 1 2 1 5 0 1 3 7 4 6 15 16 13 7 8 10 10 10 11 9 12 8 16 15 12 12 19 16 20 22 13 12 19 19 368
 
(ALL) ALL All Regions, U.S. and Foreign 42 13 40 36 22 31 25 31 31 57 40 28 37 59 41 49 29 54 52 77 53 108 112 79 65 57 45 43 65 62 43 35 35 34 73 64 59 59 65 44 69 83 50 69 75 66 2406



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