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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 1999 - 2003 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 166, Wells (shafts or deep borings in the earth, e.g., for oil and gas)

( 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 1999 2000 2001 2002 2003 Total
(U.S.) TX TEXAS 205 268 273 247 296 1289
(U.S.) OK OKLAHOMA 39 41 86 35 64 265
(U.S.) LA LOUISIANA 24 27 35 29 21 136
(U.S.) CA CALIFORNIA 15 10 14 12 18 69
(U.S.) AK ALASKA 6 11 6 2 3 28
(U.S.) CO COLORADO 7 6 7 1 2 23
(U.S.) NM NEW MEXICO 3 2 4 4 6 19
(U.S.) NY NEW YORK 7 1 1 3 1 13
(U.S.) CT CONNECTICUT 2 0 3 4 3 12
(U.S.) KS KANSAS 3 1 2 2 4 12
(U.S.) FL FLORIDA 1 0 4 3 3 11
(U.S.) NJ NEW JERSEY 0 3 4 1 1 9
(U.S.) PA PENNSYLVANIA 1 1 1 2 4 9
(U.S.) WV WEST VIRGINIA 0 0 0 5 4 9
(U.S.) MI MICHIGAN 2 0 1 2 3 8
(U.S.) WA WASHINGTON 0 0 2 3 2 7
(U.S.) WI WISCONSIN 1 1 1 2 2 7
(U.S.) ID IDAHO 1 2 1 0 2 6
(U.S.) KY KENTUCKY 0 1 2 1 2 6
(U.S.) MO MISSOURI 1 1 2 0 2 6
(U.S.) OH OHIO 0 2 0 2 2 6
(U.S.) WY WYOMING 1 0 2 2 1 6
(U.S.) GA GEORGIA 0 1 2 1 1 5
(U.S.) MA MASSACHUSETTS 0 1 2 1 1 5
(U.S.) NC NORTH CAROLINA 2 1 1 1 0 5
(U.S.) IL ILLINOIS 2 1 0 0 0 3
(U.S.) MN MINNESOTA 2 0 1 0 0 3
(U.S.) AR ARKANSAS 0 0 0 2 0 2
(U.S.) IA IOWA 0 1 1 0 0 2
(U.S.) UT UTAH 1 0 0 1 0 2
(U.S.) AZ ARIZONA 0 1 0 0 0 1
(U.S.) MD MARYLAND 0 0 0 1 0 1
(U.S.) NV NEVADA 0 0 0 1 0 1
(U.S.) OR OREGON 0 0 0 1 0 1
(U.S.) SC SOUTH CAROLINA 0 0 0 0 1 1
(U.S.) SD SOUTH DAKOTA 0 0 0 0 1 1
(U.S.) VA VIRGINIA 0 0 1 0 0 1
(U.S.)   -- Subtotal -- 326 384 459 371 450 1990
(Foreign) GBX UNITED KINGDOM 38 52 46 61 50 247
(Foreign) CAX CANADA 24 30 49 33 30 166
(Foreign) NOX NORWAY 7 16 26 11 18 78
(Foreign) FRX FRANCE 10 9 20 10 5 54
(Foreign) NLX NETHERLANDS 2 7 12 10 8 39
(Foreign) DEX GERMANY 2 2 5 9 8 26
(Foreign) BRX BRAZIL 1 3 1 4 6 15
(Foreign) VEX VENEZUELA 0 1 1 6 4 12
(Foreign) ITX ITALY 2 4 0 1 2 9
(Foreign) RUX RUSSIAN FEDERATION 1 0 3 1 1 6
(Foreign) CNX CHINA P.REP. 1 0 1 1 2 5
(Foreign) AUX AUSTRALIA 0 0 1 0 3 4
(Foreign) CHX SWITZERLAND 1 3 0 0 0 4
(Foreign) SGX SINGAPORE 0 1 1 1 1 4
(Foreign) AEX ARAB EMIRATES 1 0 1 1 0 3
(Foreign) FIX FINLAND 0 1 0 2 0 3
(Foreign) JPX JAPAN 2 0 0 0 1 3
(Foreign) MXX MEXICO 0 0 1 1 1 3
(Foreign) ARX ARGENTINA 1 0 1 0 0 2
(Foreign) BEX BELGIUM 0 0 0 0 2 2
(Foreign) IDX INDONESIA 1 0 0 0 1 2
(Foreign) ILX ISRAEL 0 0 1 0 1 2
(Foreign) EGX EGYPT 0 0 0 1 0 1
(Foreign) NGX NIGERIA 0 0 0 0 1 1
(Foreign) SAX SAUDI ARABIA 0 1 0 0 0 1
(Foreign) SEX SWEDEN 1 0 0 0 0 1
(Foreign) THX THAILAND 0 0 1 0 0 1
(Foreign)   -- Subtotal -- 95 130 171 153 145 694
(ALL) ALL All Regions, U.S. and Foreign 421 514 630 524 595 2684

PTMD Contacts

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD
PK3- Suite 441; P.O Box 1450
Alexandria VA 22313

tel: (703) 306-2600
fax: (703) 306-2737
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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