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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 246, Railway Switches and Signals

( 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.) NY NEW YORK 14 10 22 34 12 7 14 9 12 6 8 6 10 8 6 7 2 0 3 6 1 2 1 4 4 3 2 0 1 3 4 1 1 2 9 3 2 3 2 3 6 1 1 255
(U.S.) PA PENNSYLVANIA 7 5 15 10 16 9 2 9 12 10 12 11 6 15 9 4 2 2 7 5 6 3 3 1 1 4 1 1 1 2 5 6 3 8 6 8 1 5 4 4 2 2 0 245
(U.S.) CA CALIFORNIA 3 0 4 3 2 2 2 2 5 5 5 1 2 5 0 1 0 0 1 1 0 0 0 1 0 1 1 1 4 1 2 1 2 1 0 4 0 1 0 0 0 0 1 65
(U.S.) IL ILLINOIS 4 2 2 1 1 2 3 6 0 4 2 0 0 2 2 0 0 1 0 1 0 0 0 0 1 1 0 2 0 1 1 2 2 4 3 3 1 4 5 1 0 0 0 64
(U.S.) OH OHIO 0 0 0 3 0 2 2 2 0 3 2 2 1 3 1 0 1 0 0 1 0 0 0 0 0 0 0 0 0 1 1 1 2 0 1 0 0 0 0 0 2 0 0 31
(U.S.) NJ NEW JERSEY 0 3 0 1 1 4 6 1 2 1 1 0 1 1 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 28
(U.S.) MO MISSOURI 0 1 0 0 0 1 0 0 1 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 2 0 1 2 2 3 1 1 0 0 1 1 2 0 24
(U.S.) FL FLORIDA 0 1 0 0 1 0 1 0 1 0 0 0 0 1 0 1 0 0 0 0 0 0 2 1 0 0 0 0 1 0 0 0 0 2 1 1 0 2 0 1 1 1 4 23
(U.S.) MD MARYLAND 0 0 0 0 1 0 1 0 0 0 0 0 2 1 0 0 0 0 0 1 0 0 0 1 1 0 0 0 1 0 0 1 1 1 1 3 0 0 1 1 4 1 0 23
(U.S.) VA VIRGINIA 0 1 5 1 1 0 2 1 1 3 2 1 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 1 0 0 2 0 23
(U.S.) TX TEXAS 0 0 1 2 1 0 0 0 0 0 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 1 0 0 2 2 0 1 1 15
(U.S.) IN INDIANA 1 0 0 0 1 0 1 2 0 0 0 0 0 0 0 1 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 2 1 0 0 14
(U.S.) NE NEBRASKA 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 1 0 1 1 2 1 2 0 1 0 0 0 13
(U.S.) GA GEORGIA 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 0 1 1 0 2 1 4 1 0 12
(U.S.) MA MASSACHUSETTS 0 0 0 2 0 1 1 0 0 1 1 0 1 2 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 1 0 0 0 12
(U.S.) OR OREGON 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 1 0 0 0 1 1 0 2 1 11
(U.S.) MN MINNESOTA 0 0 0 0 1 0 1 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10
(U.S.) CT CONNECTICUT 1 1 1 0 0 1 0 0 0 0 0 0 1 1 0 0 0 1 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 9
(U.S.) KS KANSAS 0 0 1 1 0 0 1 0 1 0 1 1 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 1 0 0 0 0 0 9
(U.S.) SC SOUTH CAROLINA 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 1 0 1 0 2 3 0 0 9
(U.S.) IA IOWA 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 0 0 1 2 0 0 2 0 0 1 0 0 0 8
(U.S.) AL ALABAMA 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 1 0 0 0 0 1 0 0 1 2 0 7
(U.S.) KY KENTUCKY 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 2 0 0 1 0 0 0 0 0 0 0 7
(U.S.) TN TENNESSEE 1 0 0 0 0 1 0 0 0 1 0 0 1 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 7
(U.S.) WI WISCONSIN 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 1 0 1 0 1 1 0 0 0 0 1 0 0 0 7
(U.S.) CO COLORADO 1 0 1 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 0 0 1 0 0 0 0 0 6
(U.S.) MI MICHIGAN 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 1 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 6
(U.S.) DE DELAWARE 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 1 0 1 0 0 0 0 0 3
(U.S.) LA LOUISIANA 0 0 0 0 0 0 1 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 3
(U.S.) WA WASHINGTON 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 1 0 0 0 0 0 0 0 3
(U.S.) WV WEST VIRGINIA 0 0 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 0 0 0 0 0 3
(U.S.) DC DISTRICT OF COLUMBIA 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 0 0 0 2
(U.S.) NC NORTH 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 1 2
(U.S.) OK OKLAHOMA 0 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 0 0 0 0 2
(U.S.) AZ ARIZONA 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 0 1
(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 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 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 1
(U.S.) NH NEW HAMPSHIRE 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 0 0 0 1
(U.S.) NM NEW MEXICO 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.) 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 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1
(U.S.)   -- Subtotal -- 32 25 54 59 42 31 39 33 39 37 38 25 27 45 18 21 7 7 13 16 13 6 6 8 10 12 6 9 12 13 13 17 19 28 28 33 10 22 20 24 25 16 9 967
(Foreign) DEX GERMANY 1 2 0 0 2 1 1 1 5 1 5 5 5 3 4 5 4 2 0 3 2 1 0 1 2 0 1 1 1 1 4 1 4 2 1 5 0 1 3 3 5 2 0 91
(Foreign) FRX FRANCE 0 1 2 2 1 2 0 1 0 3 2 6 1 1 2 2 2 0 3 1 1 3 1 1 0 1 2 2 3 2 2 2 0 1 1 1 0 0 0 0 0 0 0 55
(Foreign) JPX JAPAN 0 0 0 3 0 1 0 1 1 1 1 1 2 1 1 2 0 1 1 0 1 0 0 0 2 1 3 3 3 2 2 1 3 1 1 3 2 1 1 1 1 0 1 50
(Foreign) GBX UNITED KINGDOM 0 2 0 2 2 1 0 1 1 3 0 6 3 3 1 0 0 1 4 0 1 0 2 0 1 2 2 1 0 0 1 2 2 0 0 0 1 1 0 0 0 1 1 48
(Foreign) CAX CANADA 1 0 1 1 4 0 0 0 0 2 0 0 0 1 1 2 0 0 0 0 0 0 1 0 2 3 1 1 0 5 0 3 1 1 3 1 1 1 2 1 3 0 2 45
(Foreign) ATX AUSTRIA 0 0 0 0 0 0 0 1 0 0 0 1 0 1 1 1 2 0 0 0 0 0 0 0 0 0 1 3 2 1 2 1 1 4 1 0 1 2 2 3 2 1 1 35
(Foreign) ITX ITALY 0 0 0 0 0 2 0 1 0 0 0 0 0 0 0 0 2 0 1 0 0 1 1 1 1 0 0 1 0 1 0 1 0 0 0 1 0 0 0 1 1 1 1 18
(Foreign) CHX SWITZERLAND 0 0 1 1 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 2 2 0 0 1 0 0 0 0 2 1 0 2 0 16
(Foreign) SEX SWEDEN 0 0 0 0 0 0 0 0 1 1 0 2 1 0 2 1 0 0 0 0 0 0 1 0 1 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 12
(Foreign) MXX MEXICO 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 1 2 0 0 1 0 1 2 1 0 0 0 10
(Foreign) BEX BELGIUM 0 0 0 0 0 0 0 1 2 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 5
(Foreign) NLX NETHERLANDS 0 0 0 1 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 1 0 0 0 0 0 0 0 0 0 1 5
(Foreign) AUX AUSTRALIA 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 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3
(Foreign) ZAX SOUTH AFRICA 0 0 0 0 0 0 0 0 0 0 0 0 0 2 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 3
(Foreign) DKX DENMARK 0 0 0 0 0 0 0 0 0 0 0 0 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 2
(Foreign) KRX SOUTH KOREA 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 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 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2
(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 0 0 0 0 0 0 0 0 1 0 0 0 0 1
(Foreign) CSX CZECHOSLOVAKIA 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
(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 1 0 0 0 0 0 0 0 0 1
(Foreign) HKX CHINA,HONG KONG S.A.R. 0 0 0 0 0 0 0 0 0 0 0 0 0 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) INX INDIA 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 1
(Foreign) MRX MAURITANIA 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
(Foreign) ROX ROMANIA 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 1
(Foreign)   -- Subtotal -- 2 6 4 10 10 8 2 7 12 12 9 21 13 12 13 14 10 4 12 4 6 6 6 4 10 8 10 14 9 14 13 12 14 10 9 12 6 8 13 13 12 8 7 409
(ALL) ALL All Regions, U.S. and Foreign 34 31 58 69 52 39 41 40 51 49 47 46 40 57 31 35 17 11 25 20 19 12 12 12 20 20 16 23 21 27 26 29 33 38 37 45 16 30 33 37 37 24 16 1376


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Electronic Information Products Division - PTMB
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