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U.S. PATENT AND TRADEMARK OFFICE
Patent Technology Monitoring Team (PTMT)

Independent Inventors By State By Year
Utility Patents Report
JANUARY 1975 -- DECEMBER 2010

COUNTS DISTRIBUTED BY CALENDAR YEAR OF GRANT

Independent Inventors By State By Year
Utility Patents Report
Patents Granted: 1975 - 2010
A Patent Technology Monitoring Team Report

Description of the Report

An independent inventor (also called an individual inventor), for purposes of this report, is a person whose patent, at the time of grant, has ownership that is unassigned or assigned to an individual (i.e., ownership of the patent is not assigned to an organization).

The counts in this table represent the number of times inventors from particular states are named on unassigned patents or on patents assigned to individuals. If a patent has more than one inventor, each inventor is counted according to his or her state of residence at the time of patent grant. If an inventor has more than one patent, he or she is counted once for each patent.

This report counts the number of times inventors from particular states are named on documents of the following type(s):
utility patents (i.e., 'patents for invention')
granted by the U.S. Patent and Trademark Office during the period JANUARY 1975 -- DECEMBER 2010. Counts of patent grants are broken out by calendar year.

The source of the data used for this report is the TAF database maintained by the U.S. Patent and Trademark Office.

Report Printing and the Use of Spreadsheet Software

This report can be printed from an Internet browser - for such printing, optimal results are usually obtained by printing in landscape orientation with minimal margins and a small text font.

Additionally, a user may import this report file into spreadsheet software such as Microsoft Excel to facilitate printing. Such spreadsheet software also may facilitate sorting and further manipulation of the data.

Number of Independent Inventors, as Distributed by Year of Grant of Patent(s) Received
Breakout by U.S. State

The counts in this report represent the number of times inventors from particular states are named on unassigned patents or on patents assigned to individuals. If the patent has more than one inventor, each inventor is counted according to his or her state of residence at the time of patent grant. If an inventor has more than one patent he or she is counted once for each patent.
Counted patents are broken out by calendar year and are those granted: JANUARY 1975 -- DECEMBER 2010
State Code State Name PRE_1994 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Total
AL ALABAMA 1617 95 124 140 123 173 158 141 176 176 154 144 114 127 75 77 87 125 3826
AK ALASKA 366 34 18 34 37 51 45 27 38 40 33 28 38 32 13 11 29 19 893
AZ ARIZONA 4729 310 360 338 323 442 415 432 419 414 407 361 305 347 294 304 259 353 10812
AR ARKANSAS 916 76 70 70 69 63 85 85 82 79 81 62 59 54 38 39 38 68 2034
CA CALIFORNIA 44654 2967 3010 3554 3174 4097 4216 4043 4016 3674 3789 3438 2857 3564 2880 2581 2626 3881 103021
CO COLORADO 4437 372 371 427 353 465 452 439 431 451 382 340 270 344 297 232 225 367 10655
CT CONNECTICUT 4839 326 344 305 296 430 432 375 390 326 346 248 224 388 238 206 212 260 10185
DE DELAWARE 530 40 52 55 35 37 46 50 60 59 56 49 54 45 30 17 33 33 1281
FL FLORIDA 12497 948 974 1154 1136 1395 1466 1370 1287 1204 1248 1169 1044 1044 927 846 822 1063 31594
GA GEORGIA 3381 264 278 310 280 428 409 431 462 366 354 285 295 328 276 239 238 376 9000
HI HAWAII 710 51 47 45 60 60 53 58 71 43 41 45 35 55 38 37 27 53 1529
ID IDAHO 1154 79 86 85 103 96 139 145 135 126 130 103 79 123 87 83 75 83 2911
IL ILLINOIS 11753 629 772 813 704 978 883 917 785 769 683 616 525 615 551 432 458 556 23439
IN INDIANA 3651 201 213 250 234 288 327 367 272 257 268 219 195 200 168 147 130 233 7620
IA IOWA 2047 119 125 96 126 191 178 148 163 113 116 117 85 112 66 79 77 129 4087
KS KANSAS 1993 123 91 120 110 139 176 158 128 140 146 114 101 97 84 75 70 132 3997
KY KENTUCKY 1483 118 107 90 109 126 141 110 124 126 123 93 76 83 85 90 73 91 3248
LA LOUISIANA 3277 212 199 245 234 287 302 329 311 278 217 198 165 173 133 139 138 150 6987
ME MAINE 666 66 64 54 38 66 58 68 65 61 50 47 45 49 29 28 34 33 1521
MD MARYLAND 5022 350 373 362 443 463 489 431 425 366 327 305 256 316 274 220 294 347 11063
MA MASSACHUSETTS 7264 494 511 562 577 720 689 707 643 591 648 472 390 549 426 394 418 582 16637
MI MICHIGAN 10845 726 680 676 617 749 874 834 766 698 641 571 501 549 448 458 403 507 21543
MN MINNESOTA 5039 321 305 343 386 499 395 461 419 425 445 384 325 423 296 254 256 317 11293
MS MISSISSIPPI 869 80 54 73 73 84 117 85 90 70 68 62 50 42 54 31 42 31 1975
MO MISSOURI 3491 235 216 246 328 351 344 325 280 361 265 194 216 187 160 168 157 194 7718
MT MONTANA 1029 61 100 77 65 91 85 81 73 79 49 46 42 44 49 43 34 43 2091
NE NEBRASKA 1378 94 97 69 76 92 73 92 88 64 74 71 76 64 75 68 53 67 2671
NV NEVADA 1385 120 119 132 128 194 232 232 246 208 220 169 182 201 137 123 110 164 4302
NH NEW HAMPSHIRE 1121 119 124 129 107 117 144 125 131 109 122 105 90 110 68 57 78 132 2988
NJ NEW JERSEY 9891 569 577 680 724 913 846 767 728 624 606 641 495 547 463 422 399 710 20602
NM NEW MEXICO 1306 89 102 107 112 105 122 113 124 107 95 95 63 88 70 76 59 111 2944
NY NEW YORK 19815 1237 1296 1305 1166 1599 1482 1427 1255 1280 1106 1066 905 951 910 786 766 1057 39409
NC NORTH CAROLINA 3560 295 301 340 367 391 414 410 462 389 388 359 277 279 259 195 205 326 9217
ND NORTH DAKOTA 528 43 44 42 30 36 42 55 61 47 25 26 37 29 26 26 31 23 1151
OH OHIO 8966 529 519 520 503 657 763 589 605 637 563 523 431 502 404 424 343 532 18010
OK OKLAHOMA 3322 179 176 188 168 166 162 178 166 150 160 130 113 145 124 92 100 109 5828
OR OREGON 3783 221 224 241 232 289 292 261 317 279 286 268 232 269 270 384 296 320 8464
PA PENNSYLVANIA 9707 676 610 706 621 933 930 869 783 722 684 594 495 621 453 390 397 586 20777
RI RHODE ISLAND 841 63 68 73 79 64 54 61 52 46 49 45 41 51 47 38 38 41 1751
SC SOUTH CAROLINA 1876 169 129 178 123 208 195 197 189 190 168 164 127 139 97 107 119 116 4491
SD SOUTH DAKOTA 406 33 24 23 35 32 39 40 39 37 28 34 29 36 24 21 26 36 942
TN TENNESSEE 2526 182 171 217 188 279 302 259 233 230 222 205 145 193 152 132 159 169 5964
TX TEXAS 13174 985 1035 1149 975 1306 1338 1345 1295 1179 1094 958 866 1001 869 812 770 1131 31282
UT UTAH 2231 177 182 198 186 273 242 236 249 252 203 207 161 193 259 324 353 371 6297
VT VERMONT 424 57 50 61 71 44 55 47 71 33 35 39 30 42 32 13 23 41 1168
VA VIRGINIA 4237 296 312 316 292 430 423 417 428 385 419 312 279 327 279 256 266 365 10039
WA WASHINGTON 5227 410 366 377 373 465 389 452 445 432 436 378 311 422 382 331 386 532 12114
WV WEST VIRGINIA 678 41 46 36 44 54 55 49 44 40 38 42 28 50 36 20 31 48 1380
WI WISCONSIN 3931 259 292 328 287 368 392 392 380 367 300 309 223 265 237 231 240 277 9078
WY WYOMING 449 40 41 22 27 35 39 42 38 30 43 31 29 26 16 20 30 32 990
DC DISTRICT OF COLUMBIA 647 30 36 27 28 46 32 35 33 26 11 23 13 15 21 18 15 19 1075
GU GUAM 6 1 0 1 1 4 4 1 1 1 0 0 0 0 1 4 1 0 26
MP NORTHERN MARIANA ISLANDS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1
PR PUERTO RICO 205 13 10 10 8 12 14 24 10 7 17 11 9 19 17 8 12 15 421
AS U.S. PACIFIC ISLANDS 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 2
VI U.S. VIRGIN ISLANDS 37 2 1 1 1 2 1 3 3 1 3 2 4 1 1 3 1 3 70
US U.S. UNSPECIFIED REGION 11 3 1 3 3 2 3 0 1 0 0 0 2 2 2 2 0 0 35
ALL ALL STATES 239928 16229 16497 18003 16989 21885 22053 21335 20588 19164 18462 16517 14039 16478 13747 12614 12562 17359 534449

Contact Information

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Electronic Information Products Division - PTMT (formerly TAF Branch)
P.O. Box 1450
Alexandria, VA 22313-1450

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

address of PTMT pages at the USPTO Internet Web Site : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/tafp.html
selected PTMT files available for download at : http://www.uspto.gov/web/offices/ac/ido/oeip/taf/data/

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