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U.S. PATENT AND TRADEMARK OFFICE
Electronic Information Products Division
Patent Technology Monitoring Branch (PTMB)

Patenting In Technology Classes
Breakout By Geographic Origin (State and Country)

Count of 1963 - 2005 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 494, Imperforate Bowl: Centrifugal Separators

( 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 )

This table displays U.S. states and countries and their counts of utility patents; 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 2005 Total
(U.S.) CA CALIFORNIA 10 2 3 5 6 3 8 1 2 0 7 5 2 11 13 7 6 7 10 10 7 5 5 1 4 3 4 3 5 2 3 4 6 7 4 5 7 4 3 5 1 1 1 208
(U.S.) MA MASSACHUSETTS 0 3 1 6 4 5 0 2 2 5 4 3 4 1 0 2 0 1 3 3 7 4 0 0 0 4 0 2 6 3 1 2 4 4 10 7 0 5 2 2 7 3 1 123
(U.S.) CT CONNECTICUT 0 0 3 3 0 2 3 1 0 2 1 2 2 5 4 5 1 2 0 1 5 7 3 2 4 4 1 2 2 0 2 7 3 8 2 1 1 1 0 3 1 5 0 101
(U.S.) IL ILLINOIS 4 3 1 6 7 0 6 3 3 3 3 1 1 1 1 9 1 2 0 0 2 0 2 0 1 1 0 2 1 1 3 0 0 5 2 2 2 3 4 2 3 1 4 96
(U.S.) PA PENNSYLVANIA 6 4 3 9 4 4 1 2 3 1 4 4 2 1 1 0 2 0 1 3 1 1 0 1 1 2 0 3 0 0 3 3 0 1 0 0 2 0 0 0 2 1 1 77
(U.S.) NY NEW YORK 2 2 1 2 2 0 1 1 2 2 4 1 0 3 2 1 6 1 0 1 2 1 1 1 3 0 1 1 2 0 1 2 0 1 0 0 0 0 0 1 0 0 2 53
(U.S.) CO COLORADO 0 0 0 1 0 0 0 1 0 0 2 1 0 0 0 0 0 0 0 0 2 0 0 0 2 0 0 1 0 1 0 4 1 2 1 4 9 4 0 3 8 3 1 51
(U.S.) MD MARYLAND 0 0 4 1 2 0 0 0 0 0 0 0 0 0 1 3 4 3 2 3 1 1 2 0 1 1 0 1 0 0 1 0 0 1 0 2 0 3 0 1 1 1 0 40
(U.S.) TN TENNESSEE 1 0 0 3 0 1 1 1 0 0 1 2 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 2 2 1 2 8 2 2 38
(U.S.) TX TEXAS 0 0 2 1 0 2 1 2 1 2 0 2 2 0 0 0 1 0 0 0 0 0 0 1 2 3 1 1 0 1 1 1 1 1 1 1 0 3 0 0 1 2 0 37
(U.S.) MI MICHIGAN 1 1 3 2 1 7 1 2 1 0 3 0 1 0 0 1 0 0 1 0 0 0 2 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29
(U.S.) NJ NEW JERSEY 0 1 1 3 2 1 0 1 0 2 3 0 1 1 1 0 1 0 0 1 0 2 0 0 2 1 0 0 1 1 0 0 0 0 0 0 0 0 2 0 0 1 0 29
(U.S.) OH OHIO 4 1 1 3 0 0 2 0 2 0 1 0 0 1 1 1 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 1 0 0 0 0 0 0 26
(U.S.) IN INDIANA 0 0 1 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 1 0 0 0 0 1 2 5 2 1 0 1 18
(U.S.) FL FLORIDA 0 1 1 0 1 0 0 0 0 0 2 2 1 1 0 2 0 0 2 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 0 0 17
(U.S.) MN MINNESOTA 0 0 1 0 0 0 0 0 0 0 0 0 2 0 1 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 2 1 0 11
(U.S.) OR OREGON 0 0 1 0 0 0 0 0 0 1 3 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 10
(U.S.) DE DELAWARE 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
(U.S.) OK OKLAHOMA 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 2 0 1 0 1 0 0 2 0 0 0 0 0 0 9
(U.S.) VA VIRGINIA 0 0 0 2 1 0 0 0 0 0 0 0 1 3 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 9
(U.S.) WA WASHINGTON 0 0 0 0 0 0 2 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 0 1 9
(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 1 2 0 0 0 0 0 0 0 1 0 0 0 1 1 1 1 0 8
(U.S.) NC NORTH CAROLINA 0 0 0 3 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 0 0 0 0 0 0 0 0 0 5
(U.S.) NE NEBRASKA 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 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 4
(U.S.) SD SOUTH DAKOTA 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 1 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 4
(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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 1 0 4
(U.S.) LA LOUISIANA 1 0 0 0 0 1 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 3
(U.S.) MO MISSOURI 0 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
(U.S.) WY WYOMING 0 0 0 0 0 0 0 0 0 0 0 0 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 0 0 0 0 1 3
(U.S.) AL ALABAMA 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 0 0 0 0 0 0 2
(U.S.) IA IOWA 0 0 0 0 0 0 0 0 0 0 0 1 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 2
(U.S.) KS KANSAS 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 1 0 0 0 0 0 0 0 0 0 0 2
(U.S.) MT MONTANA 0 0 0 0 0 0 0 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 0 0 0 0 0 0 0 0 0 0 2
(U.S.) NM NEW MEXICO 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 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 0 0 0 1 0 0 1 0 0 0 0 0 0 2
(U.S.) RI RHODE ISLAND 0 0 0 0 0 0 0 0 0 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 0 0 0 0 0 0 0 0 2
(U.S.) VT VERMONT 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2
(U.S.) WV WEST VIRGINIA 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 0 0 0 0 0 0 2
(U.S.) GA GEORGIA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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
(U.S.) KY KENTUCKY 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 1
(U.S.) ME MAINE 0 0 0 0 0 0 0 0 0 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
(U.S.) ND NORTH DAKOTA 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 0 1
(U.S.) NH NEW HAMPSHIRE 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
(U.S.) SC SOUTH CAROLINA 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 1
(U.S.)   -- Subtotal -- 29 18 29 52 32 27 27 17 18 21 39 27 25 34 25 31 27 20 22 25 29 22 17 11 25 23 13 19 19 11 16 28 19 36 21 24 31 28 19 25 39 23 15 1058
(Foreign) DEX GERMANY 6 6 4 6 5 7 8 1 7 6 4 14 7 13 9 8 4 6 11 7 10 14 11 6 9 11 4 9 2 6 10 6 4 3 3 4 8 4 6 7 5 5 7 293
(Foreign) SEX SWEDEN 6 2 4 6 5 6 10 7 6 7 6 3 5 3 1 5 2 4 1 5 4 1 2 3 9 4 4 3 4 6 1 1 1 1 1 9 6 4 13 4 6 5 5 191
(Foreign) JPX JAPAN 0 0 0 0 1 1 1 1 4 2 2 2 0 2 0 3 1 4 2 5 1 2 1 1 3 1 2 3 2 0 3 6 1 2 4 2 2 3 1 4 5 7 6 93
(Foreign) GBX UNITED KINGDOM 2 0 1 1 3 0 4 1 1 2 2 1 1 0 1 2 2 3 3 0 2 1 5 1 0 2 2 1 1 0 0 0 0 1 3 3 0 4 4 0 1 2 0 63
(Foreign) FRX FRANCE 0 0 0 1 2 0 6 0 2 3 1 1 1 2 0 0 1 1 4 2 0 1 1 0 1 1 1 2 1 0 2 1 0 1 1 0 1 1 1 3 0 0 1 47
(Foreign) CAX CANADA 1 0 0 0 0 0 0 0 1 0 1 0 2 0 0 0 0 0 0 1 0 1 0 1 0 1 3 1 1 1 4 4 2 3 3 3 2 1 1 0 0 2 1 41
(Foreign) CHX SWITZERLAND 0 0 0 2 3 1 1 0 0 2 1 2 1 2 2 2 2 1 0 0 3 0 0 0 0 1 1 0 1 0 0 0 1 1 1 0 0 1 0 0 0 3 0 35
(Foreign) DKX DENMARK 0 0 1 1 1 1 0 2 2 0 1 2 0 4 0 1 0 1 2 0 1 0 1 0 0 0 1 0 0 0 1 1 1 0 0 1 2 2 0 0 1 0 0 31
(Foreign) SUX U.S.S.R. 0 0 0 0 0 1 0 0 0 0 0 0 1 0 5 1 2 4 1 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18
(Foreign) ITX ITALY 0 0 1 1 1 0 1 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 1 0 0 0 2 1 0 1 0 0 0 0 0 0 0 0 1 1 0 1 1 16
(Foreign) NLX NETHERLANDS 0 0 2 0 0 0 1 0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 1 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10
(Foreign) AUX AUSTRALIA 0 0 1 1 0 0 0 0 1 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 9
(Foreign) CSX CZECHOSLOVAKIA 0 0 0 0 3 0 0 0 0 0 1 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 5
(Foreign) ILX ISRAEL 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 1 1 1 0 0 1 5
(Foreign) BEX BELGIUM 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 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 3
(Foreign) ESX SPAIN 0 0 0 0 0 1 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 0 0 3
(Foreign) HUX HUNGARY 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
(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 0 0 0 0 0 0 0 0 0 1 0 1 1 3
(Foreign) ATX AUSTRIA 0 0 0 0 0 0 0 0 0 0 0 0 0 1 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 2
(Foreign) TWX TAIWAN 0 0 0 0 0 0 0 0 0 0 0 0 0 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 2
(Foreign) ZAX SOUTH AFRICA 0 0 0 0 0 0 0 0 0 0 0 1 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 2
(Foreign) ARX ARGENTINA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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) CLX CHILE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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
(Foreign) CRX COSTA RICA 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 0 1
(Foreign) FIX FINLAND 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 1
(Foreign) MCX MONACO 0 0 0 0 0 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) MXX 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 1 0 0 0 0 0 0 0 0 0 0 0 1
(Foreign) NZX NEW ZEALAND 0 0 0 0 0 0 0 0 0 0 0 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 1
(Foreign) PTX PORTUGAL 0 0 0 0 0 0 0 0 0 0 0 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 1
(Foreign)   -- Subtotal -- 15 8 14 20 24 18 33 12 25 22 19 28 21 30 20 24 15 24 25 21 22 20 23 13 23 24 22 23 12 15 21 20 10 14 16 25 21 22 28 23 19 26 23 883
(ALL) ALL All Regions, U.S. and Foreign 44 26 43 72 56 45 60 29 43 43 58 55 46 64 45 55 42 44 47 46 51 42 40 24 48 47 35 42 31 26 37 48 29 50 37 49 52 50 47 48 58 49 38 1941


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