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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 1998 - 2002 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 351, Optics: Eye Examining, Vision Testing and Correcting

( 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 1998 1999 2000 2001 2002 Total
(U.S.) CA CALIFORNIA 29 40 46 31 32 178
(U.S.) NY NEW YORK 18 25 20 19 22 104
(U.S.) FL FLORIDA 14 12 12 16 19 73
(U.S.) MA MASSACHUSETTS 10 14 8 10 3 45
(U.S.) MD MARYLAND 9 9 8 6 2 34
(U.S.) NJ NEW JERSEY 10 6 4 4 4 28
(U.S.) TX TEXAS 10 5 4 4 4 27
(U.S.) PA PENNSYLVANIA 3 4 10 6 1 24
(U.S.) MI MICHIGAN 5 9 1 2 6 23
(U.S.) VA VIRGINIA 3 6 7 4 3 23
(U.S.) IL ILLINOIS 2 2 6 8 3 21
(U.S.) WA WASHINGTON 4 3 2 6 4 19
(U.S.) OH OHIO 7 3 4 3 1 18
(U.S.) MN MINNESOTA 3 2 3 5 2 15
(U.S.) GA GEORGIA 4 3 3 1 0 11
(U.S.) MO MISSOURI 2 1 1 3 4 11
(U.S.) CT CONNECTICUT 2 2 4 1 1 10
(U.S.) OR OREGON 2 2 2 0 4 10
(U.S.) RI RHODE ISLAND 1 2 4 1 1 9
(U.S.) OK OKLAHOMA 2 2 0 2 2 8
(U.S.) AZ ARIZONA 1 1 1 4 0 7
(U.S.) IN INDIANA 1 2 3 1 0 7
(U.S.) KY KENTUCKY 1 0 1 2 2 6
(U.S.) NM NEW MEXICO 0 2 2 1 1 6
(U.S.) TN TENNESSEE 2 2 0 2 0 6
(U.S.) NC NORTH CAROLINA 0 0 3 1 1 5
(U.S.) HI HAWAII 0 1 1 1 1 4
(U.S.) UT UTAH 0 2 0 0 2 4
(U.S.) AL ALABAMA 1 0 0 1 1 3
(U.S.) AR ARKANSAS 0 2 0 0 1 3
(U.S.) LA LOUISIANA 0 0 1 1 1 3
(U.S.) ME MAINE 0 0 1 1 1 3
(U.S.) NV NEVADA 2 0 0 1 0 3
(U.S.) DE DELAWARE 0 1 1 0 0 2
(U.S.) ID IDAHO 0 1 0 0 1 2
(U.S.) MS MISSISSIPPI 0 0 1 1 0 2
(U.S.) MT MONTANA 1 0 1 0 0 2
(U.S.) WI WISCONSIN 0 0 1 1 0 2
(U.S.) CO COLORADO 0 0 1 0 0 1
(U.S.) IA IOWA 0 0 0 1 0 1
(U.S.) NH NEW HAMPSHIRE 0 1 0 0 0 1
(U.S.) SC SOUTH CAROLINA 1 0 0 0 0 1
(U.S.) VT VERMONT 0 0 0 1 0 1
(U.S.) WY WYOMING 0 0 1 0 0 1
(U.S.)   -- Subtotal -- 150 167 168 152 130 767
(Foreign) JPX JAPAN 68 59 56 50 40 273
(Foreign) TWX TAIWAN 9 17 22 23 19 90
(Foreign) DEX GERMANY 12 21 13 14 17 77
(Foreign) FRX FRANCE 9 12 9 11 7 48
(Foreign) ITX ITALY 8 10 5 7 3 33
(Foreign) CAX CANADA 7 9 3 3 3 25
(Foreign) GBX UNITED KINGDOM 7 4 6 4 4 25
(Foreign) AUX AUSTRALIA 0 2 3 6 8 19
(Foreign) ILX ISRAEL 0 5 3 7 4 19
(Foreign) KRX SOUTH KOREA 0 2 3 3 6 14
(Foreign) ATX AUSTRIA 2 2 4 2 2 12
(Foreign) CHX SWITZERLAND 2 1 3 1 3 10
(Foreign) HKX CHINA,HONG KONG S.A.R. 0 2 2 1 2 7
(Foreign) DKX DENMARK 0 2 0 4 0 6
(Foreign) NLX NETHERLANDS 0 1 2 0 2 5
(Foreign) BEX BELGIUM 0 2 1 0 0 3
(Foreign) CNX CHINA P.REP. 0 0 1 0 2 3
(Foreign) FIX FINLAND 0 1 2 0 0 3
(Foreign) HUX HUNGARY 2 0 0 1 0 3
(Foreign) SEX SWEDEN 0 0 2 0 1 3
(Foreign) BRX BRAZIL 0 0 1 0 1 2
(Foreign) PLX POLAND 0 0 2 0 0 2
(Foreign) ARX ARGENTINA 0 0 0 0 1 1
(Foreign) COX COLOMBIA 0 0 0 1 0 1
(Foreign) ESX SPAIN 0 1 0 0 0 1
(Foreign) INX INDIA 0 0 0 0 1 1
(Foreign) ISX ICELAND 1 0 0 0 0 1
(Foreign) KYX CAYMAN ISLANDS 0 1 0 0 0 1
(Foreign) MCX MONACO 0 1 0 0 0 1
(Foreign) RUX RUSSIAN FEDERATION 0 0 0 1 0 1
(Foreign) SGX SINGAPORE 0 0 0 1 0 1
(Foreign) THX THAILAND 1 0 0 0 0 1
(Foreign) UAX UKRAINE 0 0 0 0 1 1
(Foreign)   -- Subtotal -- 128 155 143 140 127 693
(ALL) ALL All Regions, U.S. and Foreign 278 322 311 292 257 1460


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