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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 1963 - 2004 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 251, Valves and Valve Actuation

( 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 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 Total
(U.S.) CA CALIFORNIA 36 14 41 40 39 35 49 37 54 31 38 28 24 29 23 16 21 21 31 17 7 13 19 23 22 17 17 18 14 27 17 22 11 14 10 22 21 31 15 13 15 22 1014
(U.S.) TX TEXAS 15 11 19 14 22 19 19 18 22 14 23 22 33 11 20 21 16 21 23 26 16 29 37 26 21 10 20 21 22 19 22 20 14 14 12 17 17 22 17 21 20 8 814
(U.S.) IL ILLINOIS 24 13 27 28 22 24 20 26 35 16 18 21 12 10 8 9 9 9 24 9 8 6 19 11 10 6 8 12 11 12 12 15 7 7 6 12 13 13 8 11 12 11 594
(U.S.) PA PENNSYLVANIA 8 6 9 12 17 22 19 22 27 12 28 21 14 17 14 12 8 7 14 8 4 14 9 2 19 6 5 13 11 10 11 6 4 6 6 8 7 8 7 9 4 4 470
(U.S.) OH OHIO 13 13 22 22 12 9 20 17 13 12 13 19 11 12 12 5 4 10 8 7 7 17 10 7 17 15 12 10 5 10 9 6 9 6 2 5 6 5 3 9 6 6 436
(U.S.) MI MICHIGAN 6 8 16 15 8 8 13 7 9 9 15 8 7 10 5 8 6 4 4 5 1 12 4 6 6 10 9 6 17 9 5 8 9 8 5 11 15 22 15 10 14 11 384
(U.S.) NY NEW YORK 9 14 9 8 11 7 10 8 8 8 12 3 4 4 8 3 3 3 4 2 1 4 7 4 6 9 6 7 9 7 6 9 2 3 2 4 4 8 9 7 11 10 273
(U.S.) MA MASSACHUSETTS 2 5 8 5 10 2 10 6 12 7 8 12 10 2 3 7 2 4 3 3 3 2 4 2 4 2 7 5 3 6 5 6 1 1 9 0 3 5 4 3 6 5 207
(U.S.) NJ NEW JERSEY 6 9 11 10 11 6 13 6 10 5 10 10 6 3 4 2 4 3 6 2 0 2 5 4 1 2 2 3 0 3 3 4 4 4 5 3 4 3 3 1 5 4 202
(U.S.) OK OKLAHOMA 3 6 8 3 9 22 15 15 20 12 8 6 2 4 3 4 2 4 1 4 3 4 3 3 2 3 3 1 0 1 3 2 3 0 3 3 6 2 3 0 2 1 202
(U.S.) WI WISCONSIN 2 3 6 6 4 1 5 1 2 5 8 4 6 3 6 5 1 6 1 1 2 2 5 3 1 1 2 5 9 2 5 2 2 7 4 4 3 5 6 4 3 4 157
(U.S.) CT CONNECTICUT 2 2 5 4 4 6 1 5 10 6 4 7 6 6 3 3 2 3 7 3 0 2 5 3 0 1 2 2 1 5 1 3 4 4 3 2 4 2 2 0 1 2 138
(U.S.) IN INDIANA 3 2 2 4 1 2 5 3 6 5 1 4 1 2 1 4 2 1 1 0 2 3 4 2 3 3 4 7 0 6 8 3 5 5 4 4 4 7 4 2 1 4 135
(U.S.) MO MISSOURI 5 2 0 4 3 4 8 1 7 4 4 1 1 1 0 3 3 10 4 5 3 7 1 3 3 1 6 5 4 5 4 2 2 2 2 1 0 1 2 3 2 0 129
(U.S.) FL FLORIDA 2 1 3 1 0 1 6 6 2 2 5 3 2 1 0 1 2 2 0 1 2 2 3 4 3 0 2 4 2 3 1 3 3 6 5 7 1 5 4 1 7 4 113
(U.S.) MN MINNESOTA 3 1 4 1 4 3 1 2 5 3 2 2 1 0 1 1 0 4 1 2 1 2 4 2 2 2 2 6 1 2 5 5 4 1 2 1 8 9 1 2 2 4 109
(U.S.) IA IOWA 3 1 2 0 4 1 3 2 1 2 1 1 1 1 3 0 0 2 0 0 1 0 2 6 1 1 4 0 5 4 3 0 1 3 1 4 3 0 0 0 1 4 72
(U.S.) RI RHODE ISLAND 2 2 2 2 4 1 4 5 4 0 3 2 4 4 2 1 1 4 1 0 2 1 3 1 0 1 3 0 0 2 1 0 0 1 1 0 2 2 2 1 0 1 72
(U.S.) LA LOUISIANA 0 0 0 1 0 0 3 4 0 2 1 0 1 3 1 1 5 2 0 3 2 2 3 2 5 0 1 1 3 0 4 1 0 2 3 1 3 2 3 1 2 1 69
(U.S.) NH NEW HAMPSHIRE 0 0 0 0 0 2 1 2 0 0 1 0 1 0 1 1 0 2 2 2 1 4 2 2 2 2 1 2 1 1 2 5 3 2 0 5 2 5 1 2 3 5 68
(U.S.) CO COLORADO 1 1 1 2 2 1 1 4 3 2 1 0 1 2 1 3 1 1 0 2 0 2 1 2 3 1 1 1 3 1 3 1 1 2 1 3 0 1 0 2 1 4 64
(U.S.) VA VIRGINIA 0 1 2 3 2 1 2 1 1 0 1 1 0 1 2 0 0 0 0 0 1 1 0 0 1 1 3 6 1 6 9 3 1 0 3 0 3 2 2 0 0 2 63
(U.S.) OR OREGON 3 0 4 0 3 2 2 2 5 1 1 1 1 2 1 0 0 1 0 0 0 1 1 0 1 1 1 0 1 1 1 1 0 0 1 1 0 1 1 2 3 0 47
(U.S.) NC NORTH CAROLINA 0 0 0 0 1 0 0 0 2 1 1 1 1 4 0 1 0 0 2 0 2 0 1 0 0 1 1 2 2 1 0 2 1 3 2 2 1 6 1 2 1 1 46
(U.S.) WA WASHINGTON 2 1 0 2 2 0 0 0 1 0 1 0 0 0 0 1 0 0 1 2 1 3 2 0 2 0 0 4 1 2 2 2 1 1 1 0 3 3 1 0 1 2 45
(U.S.) MD MARYLAND 0 2 2 1 3 2 2 1 3 4 2 0 2 3 0 1 2 0 1 0 0 0 1 2 0 0 1 0 0 0 2 1 1 0 0 0 2 1 0 0 0 0 42
(U.S.) KS KANSAS 2 2 3 2 1 0 1 1 1 4 1 1 0 0 0 1 0 0 2 2 1 2 1 1 1 0 3 0 1 0 1 3 0 0 1 0 1 0 0 0 0 0 40
(U.S.) AZ ARIZONA 1 1 0 2 0 1 0 1 1 1 2 0 2 2 2 0 0 0 0 0 0 0 0 3 0 1 2 2 1 1 1 2 0 1 0 0 0 0 4 0 0 5 39
(U.S.) TN TENNESSEE 0 1 0 0 0 0 0 0 1 1 1 2 1 2 2 1 3 5 0 2 2 0 1 0 0 0 0 0 0 0 1 0 1 1 0 2 1 1 2 1 1 2 38
(U.S.) UT UTAH 1 0 0 0 0 1 2 1 1 1 1 0 0 0 0 0 0 0 1 0 0 0 1 0 2 0 0 1 1 0 1 1 1 3 1 3 3 0 1 2 1 3 34
(U.S.) KY KENTUCKY 0 1 0 1 1 0 1 1 0 1 3 1 1 1 0 1 2 1 2 0 4 0 0 0 0 2 1 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 27
(U.S.) NE NEBRASKA 0 0 0 2 3 0 2 1 2 0 1 0 0 1 0 0 1 0 0 0 1 0 1 1 0 0 0 3 1 0 0 1 0 1 0 1 1 0 0 0 2 0 26
(U.S.) AL ALABAMA 1 0 0 2 2 0 0 0 0 0 0 0 1 2 1 0 0 2 0 0 0 1 0 0 0 0 0 1 2 1 1 2 0 0 0 0 1 0 0 1 0 3 24
(U.S.) GA GEORGIA 0 0 1 1 0 0 0 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 1 0 3 2 0 3 2 2 3 0 1 0 24
(U.S.) NV NEVADA 0 0 0 0 0 1 0 0 1 0 0 1 0 0 0 0 2 1 1 1 1 1 1 0 1 0 1 0 0 0 0 1 0 0 0 0 2 2 0 0 0 2 20
(U.S.) SC SOUTH CAROLINA 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 1 0 1 1 1 1 4 1 1 1 3 1 0 2 19
(U.S.) AR ARKANSAS 0 0 0 0 0 0 0 2 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 3 2 1 0 0 1 3 1 0 0 0 1 16
(U.S.) WV WEST VIRGINIA 0 1 1 0 1 0 1 1 0 0 1 1 1 0 1 2 1 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 16
(U.S.) DE DELAWARE 0 0 2 0 1 1 0 0 0 1 1 1 0 1 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 12
(U.S.) ID IDAHO 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 2 0 0 1 1 1 0 1 0 0 1 1 0 11
(U.S.) MS MISSISSIPPI 0 1 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 1 1 1 0 0 0 0 0 0 0 0 1 11
(U.S.) ND NORTH DAKOTA 0 0 1 1 2 0 0 0 1 1 0 1 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 11
(U.S.) ME MAINE 0 0 0 1 2 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 1 0 1 0 0 0 0 0 1 0 9
(U.S.) NM NEW MEXICO 0 0 0 1 0 0 0 0 0 0 0 1 0 1 0 1 0 0 0 0 1 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 9
(U.S.) AK ALASKA 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 1 0 0 1 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
(U.S.) VT VERMONT 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 1 0 0 0 0 3 0 1 0 0 0 0 7
(U.S.) MT MONTANA 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 2 0 0 1 0 2 0 0 0 0 0 0 0 0 0 0 6
(U.S.) DC DISTRICT OF COLUMBIA 0 0 2 0 2 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 5
(U.S.) HI HAWAII 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 1 0 0 0 0 0 0 0 0 0 1 3
(U.S.) WY WYOMING 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 3
(U.S.) SD SOUTH DAKOTA 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
(U.S.)   -- Subtotal -- 156 125 213 201 214 187 240 211 270 174 222 187 159 147 128 122 104 134 146 113 80 140 166 128 139 101 133 150 137 153 156 151 103 113 101 134 152 181 128 114 130 140 6383
(Foreign) DEX GERMANY 5 6 10 5 4 10 11 7 11 17 12 13 11 6 17 12 10 12 17 7 9 14 35 14 27 23 18 30 17 23 30 28 14 17 21 25 36 56 33 36 45 57 811
(Foreign) JPX JAPAN 1 1 1 2 2 3 2 3 5 6 9 9 8 8 10 18 3 11 18 14 10 16 20 14 27 34 33 35 25 29 20 24 15 18 13 29 38 36 35 37 45 60 747
(Foreign) GBX UNITED KINGDOM 9 10 3 8 10 7 8 9 13 4 12 11 2 11 4 4 5 7 8 6 5 6 7 10 7 9 8 13 4 10 3 5 7 3 1 4 4 6 7 6 8 8 292
(Foreign) FRX FRANCE 3 3 1 2 3 6 6 5 9 7 2 7 3 7 12 4 6 6 7 4 8 6 11 9 9 6 8 3 3 6 9 7 1 4 8 12 7 5 3 4 8 5 245
(Foreign) CAX CANADA 3 1 2 1 2 4 0 1 4 1 2 4 3 2 4 5 3 5 4 1 0 6 4 6 7 1 5 8 2 6 5 5 5 3 4 10 11 10 11 12 10 7 190
(Foreign) CHX SWITZERLAND 3 1 0 2 2 3 4 5 4 3 1 6 6 1 3 0 1 4 4 3 3 3 9 5 8 5 5 4 3 4 4 2 0 7 3 3 3 5 1 3 2 0 138
(Foreign) ITX ITALY 1 1 0 1 0 1 0 0 3 5 2 1 5 1 2 1 1 3 4 2 1 2 4 4 4 3 4 7 3 5 4 3 1 1 2 2 4 5 3 5 9 6 116
(Foreign) TWX TAIWAN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1 2 1 6 4 4 8 2 9 6 0 4 7 11 7 6 11 6 12 109
(Foreign) SEX SWEDEN 0 1 0 3 1 1 3 3 3 2 3 4 2 3 2 2 2 6 5 2 0 1 2 4 4 3 2 3 2 3 0 2 1 2 2 3 5 5 4 2 0 4 102
(Foreign) ATX AUSTRIA 0 0 2 0 0 1 0 1 2 0 0 2 1 0 0 3 2 0 0 1 3 0 1 1 1 0 2 1 1 3 1 2 3 2 2 3 0 3 2 8 3 3 60
(Foreign) DKX DENMARK 1 1 0 2 5 0 0 2 0 1 1 1 2 3 0 0 0 1 1 2 0 0 3 4 2 1 1 0 4 2 2 2 1 1 0 3 2 3 1 0 0 2 57
(Foreign) AUX AUSTRALIA 0 0 0 0 0 1 0 1 6 0 0 1 2 0 0 2 1 1 0 1 1 0 2 1 1 1 4 1 0 1 1 2 1 1 1 2 3 4 1 4 1 2 51
(Foreign) NLX NETHERLANDS 0 0 2 1 2 1 1 1 0 1 0 0 1 2 1 0 1 0 3 1 0 2 1 1 1 1 0 2 3 4 0 1 1 0 0 1 1 2 2 2 1 2 46
(Foreign) ILX ISRAEL 0 0 0 1 0 0 0 0 0 0 0 0 1 1 1 1 0 1 0 1 0 3 2 1 1 2 1 2 0 0 0 0 1 1 0 0 1 1 2 1 2 3 31
(Foreign) KRX SOUTH KOREA 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 1 4 2 2 3 5 2 3 2 2 28
(Foreign) FIX FINLAND 0 0 0 0 1 1 0 0 1 0 0 0 0 2 1 1 2 1 0 0 1 0 2 0 1 1 1 1 2 1 0 0 1 0 0 0 0 2 2 0 0 0 25
(Foreign) LUX LUXEMBOURG 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 2 0 3 0 1 0 0 0 0 0 2 2 0 1 0 4 19
(Foreign) BEX BELGIUM 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 0 0 1 0 0 0 0 0 0 0 1 0 1 1 0 0 1 1 0 0 1 1 2 1 15
(Foreign) NOX NORWAY 1 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 1 0 2 1 1 0 0 1 0 0 1 1 2 15
(Foreign) SUX U.S.S.R. 0 0 0 0 0 0 0 0 1 1 0 2 0 0 2 0 0 0 1 0 2 0 3 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14
(Foreign) MXX MEXICO 0 0 0 0 0 0 0 0 1 0 1 0 1 1 0 0 0 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 2 2 13
(Foreign) ZAX SOUTH AFRICA 1 0 1 1 1 0 0 0 0 0 1 1 0 0 1 0 0 0 1 0 0 3 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 13
(Foreign) NZX NEW ZEALAND 1 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 2 0 0 2 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 1 11
(Foreign) CLX CHILE 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 2 0 1 0 0 2 0 1 0 0 0 0 7
(Foreign) BRX BRAZIL 0 0 0 0 0 2 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 6
(Foreign) CNX CHINA P.REP. 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 1 0 0 2 2 6
(Foreign) YUX YUGOSLAVIA 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 1 0 0 1 0 0 1 0 0 1 0 0 0 0 0 0 0 6
(Foreign) LIX LIECHTENSTEIN 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
(Foreign) ARX ARGENTINA 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 0 0 0 0 1 0 0 1 0 4
(Foreign) HUX HUNGARY 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4
(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 1 1 0 0 0 0 0 0 0 1 0 0 3
(Foreign) ZWX ZIMBABWE 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 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 3
(Foreign) CSX CZECHOSLOVAKIA 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 1
(Foreign) IEX IRELAND 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 1
(Foreign) INX INDIA 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
(Foreign) PAX PANAMA 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) ROX ROMANIA 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 0 0 1
(Foreign) SGX SINGAPORE 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 1
(Foreign) TRX TURKEY 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
(Foreign) VEX VENEZUELA 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 1
(Foreign)   -- Subtotal -- 29 25 22 29 33 41 36 38 67 52 47 64 51 50 60 54 39 59 74 49 45 67 108 76 107 95 102 116 80 108 88 99 62 65 65 110 134 160 116 139 153 186 3200
(ALL) ALL All Regions, U.S. and Foreign 185 150 235 230 247 228 276 249 337 226 269 251 210 197 188 176 143 193 220 162 125 207 274 204 246 196 235 266 217 261 244 250 165 178 166 244 286 341 244 253 283 326 9583


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Office of Electronic Information Products - PTMD
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