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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 392, Electric Resistance Heating 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 )

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 0 3 4 6 2 6 1 2 6 2 5 1 5 4 4 2 7 2 3 3 3 0 2 6 4 5 2 5 7 5 3 6 7 7 4 16 15 23 15 8 9 11 9 240
(U.S.) NY NEW YORK 11 6 3 6 5 5 3 4 7 8 8 1 2 3 1 3 1 4 6 3 0 5 3 3 1 1 5 2 0 3 3 1 1 0 3 2 3 1 1 2 0 1 2 133
(U.S.) IL ILLINOIS 7 10 1 3 2 0 4 7 5 5 4 5 4 1 2 2 2 4 2 2 1 1 2 2 5 0 5 2 2 1 6 2 1 2 4 3 3 4 3 4 0 2 2 129
(U.S.) OH OHIO 3 3 7 4 4 3 4 6 12 4 4 2 2 1 2 2 1 1 4 0 1 1 2 2 3 0 1 1 1 2 1 1 5 5 3 3 4 4 3 7 1 6 3 129
(U.S.) PA PENNSYLVANIA 4 3 8 4 6 7 10 7 7 7 3 5 3 2 1 2 2 1 3 1 2 3 4 2 2 0 1 1 0 2 0 2 1 2 1 3 3 5 2 1 0 1 2 126
(U.S.) MA MASSACHUSETTS 3 1 0 0 1 0 2 5 4 6 0 2 0 0 2 2 1 0 3 1 1 4 0 1 1 6 2 1 4 3 3 9 0 4 5 5 3 6 7 6 1 2 1 108
(U.S.) MI MICHIGAN 4 1 6 7 5 3 5 1 3 4 0 1 3 2 0 1 2 2 1 2 0 0 0 2 1 0 4 1 0 2 0 1 2 1 2 3 0 1 0 1 1 1 9 85
(U.S.) NJ NEW JERSEY 1 3 3 4 2 1 3 9 3 3 4 1 1 2 0 2 0 1 2 2 2 4 0 2 3 1 1 0 1 2 1 2 2 3 2 6 0 3 0 2 0 1 0 85
(U.S.) TX TEXAS 1 2 0 0 0 1 0 1 1 0 0 3 2 2 1 1 1 0 0 2 2 0 1 1 5 0 1 2 1 1 4 7 5 1 2 2 4 6 5 3 3 1 1 76
(U.S.) CT CONNECTICUT 1 2 2 4 3 2 1 2 3 1 3 1 1 3 1 5 0 2 2 1 2 1 1 1 2 1 0 2 1 1 0 1 0 2 3 1 6 2 1 1 2 1 3 75
(U.S.) MN MINNESOTA 1 1 3 0 2 2 2 0 1 0 2 0 1 0 2 0 1 3 0 1 0 4 3 2 1 2 1 0 5 0 0 2 1 0 1 2 3 3 2 2 4 2 2 64
(U.S.) MO MISSOURI 1 2 2 3 1 2 3 4 8 4 1 3 2 0 1 3 1 1 0 2 2 1 0 1 3 0 1 1 1 0 0 0 0 0 1 0 1 1 3 0 0 2 1 63
(U.S.) WI WISCONSIN 1 1 2 2 4 1 2 1 0 0 1 1 0 1 0 0 0 0 0 3 3 0 1 0 4 1 1 0 2 2 0 0 2 0 2 1 4 4 3 2 3 0 3 58
(U.S.) FL FLORIDA 0 0 0 0 1 1 2 1 1 1 0 1 1 1 1 1 0 2 0 3 1 2 2 1 1 1 2 1 1 3 0 0 3 0 1 2 4 0 2 5 1 2 2 54
(U.S.) IN INDIANA 0 1 3 1 2 0 1 1 1 1 0 0 1 0 0 0 0 0 1 1 0 0 4 2 1 0 0 1 0 0 1 2 0 0 1 0 0 3 0 1 0 3 2 35
(U.S.) MD MARYLAND 1 0 2 1 1 1 1 1 1 0 0 1 3 1 2 1 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 1 1 3 1 0 1 1 1 1 0 0 1 32
(U.S.) AZ ARIZONA 0 0 0 0 0 1 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 1 0 0 0 1 0 0 1 0 2 1 2 0 3 0 5 9 31
(U.S.) TN TENNESSEE 0 0 0 0 2 0 0 0 0 0 2 1 2 1 0 0 2 0 0 1 1 0 0 1 0 1 0 0 2 4 2 1 0 0 0 1 0 1 4 0 1 1 0 31
(U.S.) VA VIRGINIA 0 1 0 2 1 0 1 1 1 0 0 1 1 0 0 2 0 0 0 0 0 0 0 0 2 0 0 1 0 2 0 2 2 1 1 0 1 1 2 1 1 1 0 29
(U.S.) CO COLORADO 1 0 1 2 0 0 2 0 0 0 0 1 1 0 1 0 0 1 0 0 0 0 1 1 0 1 0 2 0 0 0 1 1 1 0 1 0 0 1 0 2 2 1 25
(U.S.) NC NORTH CAROLINA 1 1 0 0 0 0 0 0 0 1 1 2 0 0 1 2 0 1 0 1 1 1 0 0 0 1 0 0 0 0 4 0 3 0 0 0 1 0 1 1 1 0 0 25
(U.S.) WA WASHINGTON 0 1 2 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 1 0 1 0 1 0 1 2 1 0 0 2 1 0 1 0 0 1 0 0 0 1 0 4 1 23
(U.S.) AL ALABAMA 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 1 0 2 1 0 0 0 1 0 3 0 2 0 0 1 3 20
(U.S.) OR OREGON 0 0 0 1 0 0 0 1 1 1 0 0 0 1 0 1 1 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 0 0 2 0 1 0 1 0 4 19
(U.S.) GA GEORGIA 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 2 1 0 1 0 0 0 0 0 3 2 0 1 1 2 0 0 0 0 0 0 0 17
(U.S.) IA IOWA 0 0 1 1 0 0 1 0 1 0 0 1 1 0 0 2 0 1 0 0 0 0 0 0 1 1 1 0 0 0 0 0 1 0 0 3 0 1 0 0 0 0 0 17
(U.S.) ID IDAHO 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 1 1 3 3 2 1 0 0 1 1 14
(U.S.) NH NEW HAMPSHIRE 0 0 1 0 1 1 0 0 1 0 0 1 0 0 0 0 0 0 2 0 1 0 0 0 1 0 0 0 0 2 1 0 0 0 0 0 0 1 0 0 0 0 0 13
(U.S.) UT UTAH 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 1 1 2 1 0 0 0 0 2 0 4 0 0 12
(U.S.) ME MAINE 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 0 0 0 2 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
(U.S.) SC SOUTH CAROLINA 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 1 0 1 0 2 1 0 0 0 0 0 0 1 1 0 1 0 0 0 0 1 0 0 0 0 0 11
(U.S.) KS KANSAS 0 0 0 3 1 1 1 0 0 0 1 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 1 0 0 10
(U.S.) KY KENTUCKY 0 0 0 0 0 0 0 0 1 0 0 0 2 0 1 0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 9
(U.S.) LA LOUISIANA 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 2 0 0 0 0 8
(U.S.) NM NEW MEXICO 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 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 6
(U.S.) SD SOUTH DAKOTA 0 1 0 0 1 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 1 0 0 0 1 6
(U.S.) RI RHODE ISLAND 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 1 0 0 0 0 0 0 0 1 0 1 0 0 5
(U.S.) MS MISSISSIPPI 0 0 0 0 0 0 0 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 1 0 0 0 0 1 4
(U.S.) NV NEVADA 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 1 1 0 0 0 0 0 4
(U.S.) OK OKLAHOMA 0 0 0 0 0 0 0 0 0 1 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 1 0 0 0 0 0 0 0 4
(U.S.) WV WEST VIRGINIA 1 0 0 0 0 1 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 4
(U.S.) WY WYOMING 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 4
(U.S.) AR ARKANSAS 0 0 1 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 0 0 0 0 0 0 0 0 0 0 0 0 3
(U.S.) DE DELAWARE 0 1 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 0 0 0 0 0 0 0 0 0 0 0 3
(U.S.) MT MONTANA 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 0 0 1 0 0 0 0 0 0 0 0 0 0 3
(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 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 3
(U.S.) DC DISTRICT OF COLUMBIA 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 0 0 0 0 0 0 0 2
(U.S.) AK ALASKA 0 0 0 0 0 0 0 0 0 0 0 0 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
(U.S.) NE NEBRASKA 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 0 1
(U.S.) PR PUERTO RICO 0 0 0 0 0 0 0 0 0 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.) VT VERMONT 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 0 0 0 1
(U.S.)   -- Subtotal -- 43 46 54 55 50 39 53 56 72 52 41 36 39 26 23 35 23 28 32 35 28 33 32 33 50 31 38 25 29 42 42 48 45 37 41 63 68 78 66 52 37 52 64 1872
(Foreign) JPX JAPAN 0 0 0 1 0 1 1 3 6 7 4 2 2 3 1 1 2 3 3 3 2 3 3 5 5 7 4 5 9 4 9 2 2 5 10 6 11 10 13 11 8 7 19 203
(Foreign) DEX GERMANY 1 0 2 5 5 1 1 2 3 3 2 7 5 3 4 2 2 6 2 6 3 2 5 3 4 6 10 9 8 6 7 8 3 2 4 2 11 9 7 7 5 5 2 190
(Foreign) GBX UNITED KINGDOM 1 4 2 2 1 3 3 4 4 6 4 2 3 4 1 1 1 3 0 3 3 5 4 2 3 4 8 4 3 1 3 3 8 2 0 3 1 2 1 2 3 1 2 120
(Foreign) CAX CANADA 1 2 0 5 2 3 3 2 1 0 0 1 2 3 3 3 0 1 0 2 3 2 2 2 2 2 1 2 2 4 1 2 2 4 1 0 1 2 4 3 4 1 4 85
(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 1 4 0 1 0 4 5 2 3 1 1 4 6 7 8 10 9 7 11 84
(Foreign) FRX FRANCE 0 1 0 0 0 0 0 1 2 0 2 0 1 1 2 2 2 1 4 2 2 0 0 5 0 2 3 2 3 0 2 5 1 0 3 3 5 3 0 5 1 0 1 67
(Foreign) ITX ITALY 2 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 2 3 1 0 1 1 3 2 1 1 3 0 1 1 2 1 2 6 3 2 1 5 47
(Foreign) SEX SWEDEN 1 1 0 1 1 0 0 1 1 2 4 2 1 1 1 2 0 0 1 2 2 0 0 1 2 0 1 2 0 2 0 0 0 1 0 1 1 1 4 0 2 0 0 42
(Foreign) CHX SWITZERLAND 1 0 1 0 0 1 1 0 3 0 2 0 1 2 1 2 0 2 0 0 2 1 1 3 1 1 3 3 1 1 1 0 0 1 0 0 1 0 2 1 0 0 0 40
(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 1 0 1 2 0 0 4 2 3 5 4 3 3 1 29
(Foreign) NLX NETHERLANDS 1 0 0 0 0 0 0 0 1 0 2 1 1 0 0 0 0 1 0 0 0 1 0 0 1 0 1 1 0 1 0 1 3 0 0 0 1 2 1 0 1 0 0 21
(Foreign) ILX ISRAEL 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 0 2 2 0 0 0 0 0 0 1 0 0 0 0 0 1 2 0 3 1 2 1 18
(Foreign) DKX DENMARK 0 0 0 0 0 0 0 0 1 2 2 0 0 1 3 3 0 1 1 1 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 17
(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 1 2 0 2 0 0 0 0 2 0 0 1 0 0 2 1 0 5 0 0 1 0 17
(Foreign) FIX FINLAND 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 1 0 2 3 0 1 1 0 0 1 0 1 0 0 0 0 0 0 15
(Foreign) AUX AUSTRALIA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 1 1 0 1 0 0 0 0 1 0 2 1 1 0 0 1 2 14
(Foreign) NZX NEW ZEALAND 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 1 1 1 1 0 0 2 0 13
(Foreign) ATX AUSTRIA 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 0 0 1 0 1 0 0 1 0 0 0 1 1 0 0 0 0 11
(Foreign) BRX BRAZIL 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 1 1 1 0 0 0 0 0 1 0 0 0 1 0 10
(Foreign) ESX SPAIN 0 1 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 0 0 0 0 0 2 2 1 0 1 9
(Foreign) BEX BELGIUM 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 0 0 0 0 1 1 0 0 1 0 1 7
(Foreign) NOX NORWAY 0 0 0 0 0 0 0 0 0 1 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 1 1 1 0 1 0 0 7
(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 3 0 0 1 0 1 0 1 0 6
(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 2 1 1 0 1 0 5
(Foreign) ZAX SOUTH AFRICA 0 0 0 0 0 0 0 0 0 0 0 1 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 1 0 0 0 0 0 4
(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 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 3
(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 0 0 0 0 2 0 0 1 3
(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 0 0 0 0 0 0 0 0 0 0 2 2
(Foreign) ARX ARGENTINA 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
(Foreign) COX COLOMBIA 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) CSX CZECHOSLOVAKIA 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 1
(Foreign) GRX GREECE 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) LIX LIECHTENSTEIN 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
(Foreign) PHX PHILIPPINES 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
(Foreign) SUX U.S.S.R. 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) VEX VENEZUELA 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 0 0 1
(Foreign)   -- Subtotal -- 8 10 5 14 10 10 9 19 23 22 22 21 16 19 17 17 8 21 14 20 20 20 26 26 25 30 34 35 33 29 34 31 26 18 25 28 49 53 63 55 43 35 54 1097
(ALL) ALL All Regions, U.S. and Foreign 51 56 59 69 60 49 62 75 95 74 63 57 55 45 40 52 31 49 46 55 48 53 58 59 75 61 72 60 62 71 76 79 71 55 66 91 117 131 129 107 80 87 118 2969


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Electronic Information Products Division - PTMB
MDW 4C18; P.O Box 1450
Alexandria VA 22313-1450

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