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U.S. PATENT AND TRADEMARK OFFICE
Electronic Information Products Division
Patent Technology Monitoring Team (PTMT)

Independent Inventors By State By Year
All Patent Types Report
JANUARY 1977 -- DECEMBER 2008

COUNTS DISTRIBUTED BY CALENDAR YEAR OF GRANT

Independent Inventors By State By Year
All Patent Types Report
Patents Granted: 1977 - 2008
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'), design patents, plant patents, reissue patents, statutory invention registrations, defensive publications
granted by the U.S. Patent and Trademark Office during the period JANUARY 1977 -- DECEMBER 2008. 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 1977 -- DECEMBER 2008
State Code State Name PRE_1992 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Total
AL ALABAMA 1591 133 142 150 160 183 160 206 237 209 246 207 213 171 148 168 109 132 4565
AK ALASKA 297 39 52 43 30 52 52 65 60 42 48 47 41 37 39 41 20 21 1026
AZ ARIZONA 4240 387 377 393 445 413 417 569 491 526 500 472 463 425 357 418 410 405 11708
AR ARKANSAS 889 76 78 97 93 103 87 83 112 102 110 96 100 80 81 93 73 75 2428
CA CALIFORNIA 41838 3774 3784 3833 3991 4437 4160 5325 5264 5215 5062 4828 4819 4306 3556 4635 4069 3882 116778
CO COLORADO 3962 452 472 474 445 538 438 564 541 540 487 517 449 418 325 425 393 337 11777
CT CONNECTICUT 4192 354 414 405 406 362 346 528 523 438 444 372 398 298 253 424 277 244 10678
DE DELAWARE 452 38 57 49 58 72 40 46 53 53 65 67 59 63 60 54 36 25 1347
FL FLORIDA 11267 1170 1144 1199 1305 1447 1404 1719 1749 1725 1590 1466 1575 1452 1233 1379 1316 1294 35434
GA GEORGIA 3037 342 374 375 401 426 353 537 507 522 548 473 424 359 366 440 383 360 10227
HI HAWAII 629 61 87 73 64 70 76 70 70 76 87 51 54 52 45 69 55 58 1747
ID IDAHO 1017 107 105 113 108 112 125 113 162 173 163 149 159 122 87 151 106 96 3168
IL ILLINOIS 10380 794 893 840 998 973 870 1206 1083 1110 978 896 859 767 670 785 741 607 25450
IN INDIANA 3471 245 266 269 284 310 290 343 384 430 353 336 346 282 234 279 247 197 8566
IA IOWA 1947 162 134 160 162 128 150 226 197 173 191 124 134 128 112 141 83 105 4457
KS KANSAS 1817 160 124 156 128 150 141 161 210 201 155 171 175 145 118 115 108 101 4336
KY KENTUCKY 1314 110 102 135 146 124 129 151 161 133 151 141 141 114 85 101 113 109 3460
LA LOUISIANA 2748 280 282 243 244 283 260 341 334 381 344 317 252 229 196 201 167 183 7285
ME MAINE 576 74 83 89 88 69 53 76 74 82 70 70 53 50 48 56 38 33 1682
MD MARYLAND 4376 423 387 428 463 429 485 545 550 482 468 416 363 351 280 365 326 274 11411
MA MASSACHUSETTS 6241 532 584 601 615 660 663 870 793 832 733 691 748 561 467 634 529 499 17253
MI MICHIGAN 9456 807 801 904 839 845 741 893 1038 974 882 868 802 717 611 699 612 616 23105
MN MINNESOTA 4632 435 421 399 436 428 461 655 474 592 538 514 569 468 382 537 413 338 12692
MS MISSISSIPPI 712 88 100 112 75 92 99 102 141 107 102 84 88 77 57 48 82 41 2207
MO MISSOURI 3112 315 249 308 313 313 393 441 416 403 344 420 325 239 262 226 224 230 8533
MT MONTANA 864 101 100 73 120 108 83 110 94 105 87 88 53 54 58 55 61 55 2269
NE NEBRASKA 1229 107 104 117 113 86 90 104 92 113 97 82 106 80 85 81 90 86 2862
NV NEVADA 1240 133 156 166 161 172 161 245 279 307 293 252 275 200 215 225 172 166 4818
NH NEW HAMPSHIRE 966 111 104 148 154 164 135 131 165 150 147 121 135 123 108 118 90 68 3138
NJ NEW JERSEY 8694 668 797 739 713 836 839 1122 1024 943 868 730 734 740 602 679 619 557 21904
NM NEW MEXICO 1061 126 134 117 130 122 126 121 139 135 135 120 103 105 69 97 85 86 3011
NY NEW YORK 17670 1375 1520 1504 1608 1628 1456 1979 1802 1773 1585 1555 1358 1349 1116 1251 1267 1107 42903
NC NORTH CAROLINA 3328 316 367 375 387 428 461 489 520 547 583 526 498 451 330 358 343 280 10587
ND NORTH DAKOTA 469 45 50 48 47 49 37 42 47 57 61 49 25 33 39 39 36 31 1204
OH OHIO 8075 684 664 692 708 669 672 844 936 814 791 791 772 667 545 673 539 550 20086
OK OKLAHOMA 3027 280 294 243 230 228 192 206 196 225 195 193 203 152 125 171 157 123 6440
OR OREGON 3498 257 332 281 315 352 312 384 384 366 421 392 336 332 280 326 353 467 9388
PA PENNSYLVANIA 8345 721 780 849 794 890 776 1163 1091 1011 900 840 804 708 581 718 586 515 22072
RI RHODE ISLAND 826 83 90 86 87 95 105 91 81 82 65 62 81 63 65 80 72 72 2186
SC SOUTH CAROLINA 1595 215 195 199 161 217 156 261 236 246 236 237 198 195 169 196 158 158 5028
SD SOUTH DAKOTA 358 35 44 37 36 27 41 32 47 50 47 43 33 38 31 39 27 26 991
TN TENNESSEE 2340 264 245 221 231 274 252 337 373 327 292 296 281 257 181 253 236 210 6870
TX TEXAS 11755 1142 1164 1244 1265 1370 1163 1564 1572 1608 1490 1314 1239 1144 1050 1168 1084 1010 33346
UT UTAH 1963 202 258 240 230 245 224 322 287 286 287 292 233 237 195 229 309 366 6405
VT VERMONT 407 55 62 78 68 82 84 67 69 63 76 38 38 43 36 58 37 18 1379
VA VIRGINIA 3746 359 359 362 393 389 349 500 485 496 519 449 470 354 329 401 344 321 10625
WA WASHINGTON 4650 385 464 500 463 485 467 577 485 553 538 503 530 457 363 499 482 457 12858
WV WEST VIRGINIA 590 50 40 63 60 54 54 66 63 56 49 48 41 51 33 58 40 35 1451
WI WISCONSIN 3443 325 310 307 355 380 342 457 484 501 470 405 362 378 274 323 315 314 9745
WY WYOMING 394 27 35 52 71 34 37 37 44 48 43 32 49 33 29 33 23 25 1046
DC DISTRICT OF COLUMBIA 544 41 39 35 41 28 35 56 43 37 38 29 12 26 16 17 27 18 1082
GU GUAM 7 0 1 1 2 2 2 4 4 2 6 2 0 0 0 0 1 4 38
MP NORTHERN MARIANA ISLANDS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1
PR PUERTO RICO 210 12 11 16 13 12 13 13 25 29 11 11 18 11 16 20 18 11 470
AS U.S. PACIFIC ISLANDS 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2
VI U.S. VIRGIN ISLANDS 30 1 2 2 3 2 1 2 1 3 3 1 4 2 4 1 2 4 68
US U.S. UNSPECIFIED REGION 3 11 4 4 1 6 4 2 5 1 1 0 0 0 2 2 3 2 51
ALL ALL STATES 215521 19489 20237 20647 21257 22453 21063 27163 26697 26455 24993 23294 22600 20194 17018 20652 18506 17405 585644

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
ftp download of selected PTMT reports and materials from : ftp.uspto.gov/pub/taf/

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