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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 2000 - 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 165, Heat Exchange

( 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 2000 2001 2002 2003 2004 Total
(U.S.) CA CALIFORNIA 24 20 18 13 29 104
(U.S.) NY NEW YORK 20 18 14 21 20 93
(U.S.) MI MICHIGAN 13 22 13 15 15 78
(U.S.) TX TEXAS 15 11 12 10 12 60
(U.S.) PA PENNSYLVANIA 4 6 12 11 16 49
(U.S.) WI WISCONSIN 7 6 11 4 8 36
(U.S.) IL ILLINOIS 5 12 6 4 5 32
(U.S.) OH OHIO 7 4 4 6 9 30
(U.S.) MA MASSACHUSETTS 4 7 6 5 7 29
(U.S.) FL FLORIDA 4 5 6 4 5 24
(U.S.) CT CONNECTICUT 4 6 5 5 2 22
(U.S.) CO COLORADO 2 2 5 3 9 21
(U.S.) OR OREGON 3 7 6 2 3 21
(U.S.) NH NEW HAMPSHIRE 4 3 1 3 6 17
(U.S.) NJ NEW JERSEY 4 2 3 3 4 16
(U.S.) AZ ARIZONA 1 6 2 4 1 14
(U.S.) IN INDIANA 7 0 1 1 5 14
(U.S.) MN MINNESOTA 2 4 2 2 3 13
(U.S.) MD MARYLAND 2 1 4 2 3 12
(U.S.) VA VIRGINIA 4 1 2 2 3 12
(U.S.) TN TENNESSEE 1 3 2 1 4 11
(U.S.) WA WASHINGTON 1 2 2 0 5 10
(U.S.) NC NORTH CAROLINA 1 1 1 2 3 8
(U.S.) OK OKLAHOMA 2 3 2 1 0 8
(U.S.) RI RHODE ISLAND 1 0 2 3 2 8
(U.S.) GA GEORGIA 3 1 2 1 0 7
(U.S.) NM NEW MEXICO 2 1 2 1 1 7
(U.S.) MS MISSISSIPPI 3 2 0 1 0 6
(U.S.) IA IOWA 0 0 0 4 1 5
(U.S.) MO MISSOURI 1 1 0 0 3 5
(U.S.) AL ALABAMA 2 1 0 0 1 4
(U.S.) KS KANSAS 1 1 1 1 0 4
(U.S.) KY KENTUCKY 0 2 0 1 1 4
(U.S.) SC SOUTH CAROLINA 0 1 0 2 1 4
(U.S.) DE DELAWARE 1 2 0 0 0 3
(U.S.) ID IDAHO 0 1 0 1 1 3
(U.S.) LA LOUISIANA 1 0 1 0 1 3
(U.S.) NV NEVADA 1 1 0 0 1 3
(U.S.) SD SOUTH DAKOTA 1 2 0 0 0 3
(U.S.) VT VERMONT 1 1 0 0 0 2
(U.S.) WV WEST VIRGINIA 0 1 1 0 0 2
(U.S.) ND NORTH DAKOTA 0 1 0 0 0 1
(U.S.) UT UTAH 0 0 1 0 0 1
(U.S.)   -- Subtotal -- 159 171 150 139 190 809
(Foreign) JPX JAPAN 89 115 93 66 83 446
(Foreign) DEX GERMANY 34 37 30 42 26 169
(Foreign) TWX TAIWAN 15 30 38 31 52 166
(Foreign) FRX FRANCE 16 13 22 28 10 89
(Foreign) KRX SOUTH KOREA 9 3 9 9 16 46
(Foreign) SEX SWEDEN 14 8 6 5 5 38
(Foreign) CAX CANADA 3 12 5 4 13 37
(Foreign) GBX UNITED KINGDOM 10 6 5 4 3 28
(Foreign) FIX FINLAND 2 3 3 3 4 15
(Foreign) ITX ITALY 1 4 4 0 3 12
(Foreign) CNX CHINA P.REP. 0 1 2 3 4 10
(Foreign) CHX SWITZERLAND 1 2 1 1 2 7
(Foreign) INX INDIA 0 0 0 4 3 7
(Foreign) NLX NETHERLANDS 3 1 1 0 2 7
(Foreign) ILX ISRAEL 1 3 1 1 0 6
(Foreign) AUX AUSTRALIA 1 0 2 0 1 4
(Foreign) DKX DENMARK 3 0 0 0 0 3
(Foreign) HUX HUNGARY 1 2 0 0 0 3
(Foreign) NOX NORWAY 1 1 0 1 0 3
(Foreign) SGX SINGAPORE 1 1 0 1 0 3
(Foreign) ATX AUSTRIA 1 1 0 0 0 2
(Foreign) BEX BELGIUM 0 2 0 0 0 2
(Foreign) BRX BRAZIL 1 1 0 0 0 2
(Foreign) ESX SPAIN 1 0 1 0 0 2
(Foreign) ARX ARGENTINA 1 0 0 0 0 1
(Foreign) CZX CZECH REPUBLIC 0 0 0 1 0 1
(Foreign) KWX KUWAIT 0 1 0 0 0 1
(Foreign) LIX LIECHTENSTEIN 1 0 0 0 0 1
(Foreign) LUX LUXEMBOURG 0 1 0 0 0 1
(Foreign) NZX NEW ZEALAND 0 0 0 1 0 1
(Foreign) PLX POLAND 0 0 0 1 0 1
(Foreign) ROX ROMANIA 1 0 0 0 0 1
(Foreign)   -- Subtotal -- 211 248 223 206 227 1115
(ALL) ALL All Regions, U.S. and Foreign 370 419 373 345 417 1924


PTMD Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD
MDW 4C18; P.O Box 1450
Alexandria VA 22313-1450

tel: (571) 272-5600
fax: (571) 273-0110
email: oeip@uspto.gov

address of PTMD pages at the USPTO Web Site: http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
ftp download of selected PTMD reports and materials from : ftp.uspto.gov/pub/taf/


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