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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
Utility Patents Report
JANUARY 1975 -- DECEMBER 2008

COUNTS DISTRIBUTED BY CALENDAR YEAR OF GRANT

Independent Inventors By State By Year
Utility Patents Report
Patents Granted: 1975 - 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')
granted by the U.S. Patent and Trademark Office during the period JANUARY 1975 -- 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 1975 -- 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 1394 109 114 95 124 140 123 173 158 141 176 176 154 144 114 127 75 77 3614
AK ALASKA 301 29 36 34 18 34 37 51 45 27 38 40 33 28 38 32 13 11 845
AZ ARIZONA 4085 336 308 310 360 338 323 442 415 432 419 414 407 361 305 347 294 304 10200
AR ARKANSAS 806 53 57 76 70 70 69 63 85 85 82 79 81 62 59 54 38 39 1928
CA CALIFORNIA 38816 2958 2880 2967 3010 3554 3174 4097 4216 4043 4016 3674 3789 3438 2857 3564 2880 2580 96513
CO COLORADO 3694 379 364 372 371 427 353 465 452 439 431 452 382 340 270 344 297 232 10064
CT CONNECTICUT 4195 317 327 326 344 305 296 430 432 375 390 326 346 248 224 388 238 206 9713
DE DELAWARE 451 32 47 40 52 55 35 37 46 50 60 59 56 49 54 45 30 17 1215
FL FLORIDA 10592 986 919 948 974 1154 1136 1395 1466 1370 1287 1204 1248 1169 1044 1044 927 846 29709
GA GEORGIA 2862 258 261 264 278 310 280 428 409 431 462 366 354 285 295 328 276 239 8386
HI HAWAII 596 51 63 51 47 45 60 60 53 58 71 43 41 45 35 55 38 37 1449
ID IDAHO 986 85 83 79 86 85 103 96 139 145 135 126 130 103 79 123 87 83 2753
IL ILLINOIS 10401 647 705 629 772 813 704 978 883 917 785 769 683 616 525 615 551 432 22425
IN INDIANA 3252 200 199 201 213 250 234 288 327 367 272 257 268 219 195 200 168 147 7257
IA IOWA 1835 134 78 119 125 96 126 191 178 148 163 113 116 117 85 112 66 79 3881
KS KANSAS 1776 129 88 123 91 120 110 139 176 158 128 140 146 114 101 97 84 75 3795
KY KENTUCKY 1309 92 82 118 107 90 109 126 141 110 124 126 123 93 76 83 85 90 3084
LA LOUISIANA 2795 249 233 212 199 245 234 287 302 329 311 278 217 198 165 173 133 139 6699
ME MAINE 549 55 62 66 64 54 38 66 58 68 65 61 50 47 45 49 29 28 1454
MD MARYLAND 4367 332 323 350 373 362 443 463 489 431 425 366 327 305 256 316 274 220 10422
MA MASSACHUSETTS 6329 463 472 494 511 562 577 720 689 707 643 591 648 472 390 549 426 394 15637
MI MICHIGAN 9477 722 646 726 680 676 617 749 874 834 766 698 641 571 501 549 449 458 20634
MN MINNESOTA 4361 347 331 321 305 343 386 499 395 461 419 425 445 384 325 423 296 254 10720
MS MISSISSIPPI 721 73 75 80 54 73 73 84 117 85 90 70 68 62 50 42 54 31 1902
MO MISSOURI 3041 258 192 235 216 246 328 351 344 325 280 361 265 194 216 187 160 168 7367
MT MONTANA 866 84 79 61 100 77 65 91 85 81 73 79 49 46 42 44 49 43 2014
NE NEBRASKA 1195 95 88 94 97 69 76 92 73 92 88 64 74 71 76 64 75 68 2551
NV NEVADA 1156 115 114 120 119 132 128 194 232 232 246 208 220 169 182 201 137 123 4028
NH NEW HAMPSHIRE 945 94 82 119 124 129 107 117 144 125 131 109 122 105 90 110 68 57 2778
NJ NEW JERSEY 8735 551 605 569 577 680 724 913 846 767 728 624 606 641 495 547 463 422 19493
NM NEW MEXICO 1081 113 112 89 102 107 112 105 122 113 124 107 95 95 63 88 70 76 2774
NY NEW YORK 17521 1146 1148 1237 1296 1305 1166 1599 1482 1427 1255 1280 1106 1066 905 951 910 786 37586
NC NORTH CAROLINA 3033 249 278 295 301 340 367 391 414 410 462 389 388 359 277 279 259 195 8686
ND NORTH DAKOTA 446 37 45 43 44 42 30 36 42 55 61 47 25 26 37 29 26 26 1097
OH OHIO 7877 570 519 529 519 520 503 657 763 589 605 637 563 523 431 502 404 424 17135
OK OKLAHOMA 2916 215 191 179 176 188 168 166 162 178 166 150 160 130 113 145 124 92 5619
OR OREGON 3334 217 232 221 224 241 232 289 292 261 317 279 286 268 232 269 270 384 7848
PA PENNSYLVANIA 8509 608 590 676 610 706 621 933 930 869 783 722 684 594 495 621 453 390 19794
RI RHODE ISLAND 715 62 64 63 68 73 79 64 54 61 52 46 49 45 41 51 47 38 1672
SC SOUTH CAROLINA 1550 172 154 169 129 178 123 208 195 197 189 190 168 164 127 139 97 107 4256
SD SOUTH DAKOTA 348 27 31 33 24 23 35 32 39 40 39 37 28 34 29 36 24 21 880
TN TENNESSEE 2114 228 184 182 171 217 188 279 302 259 233 230 222 205 145 193 152 132 5636
TX TEXAS 11310 957 907 985 1035 1149 975 1306 1338 1345 1295 1179 1094 958 866 1001 869 812 29381
UT UTAH 1864 154 213 177 182 198 186 273 242 236 249 252 203 207 161 193 259 324 5573
VT VERMONT 345 43 36 57 50 61 71 44 55 47 71 33 35 39 30 42 32 13 1104
VA VIRGINIA 3641 306 290 296 312 316 292 430 423 417 428 385 419 312 279 327 279 256 9408
WA WASHINGTON 4528 333 366 410 366 377 373 465 389 452 445 432 436 378 311 422 382 331 11196
WV WEST VIRGINIA 600 46 32 41 46 36 44 54 55 49 44 40 38 42 28 50 36 20 1301
WI WISCONSIN 3415 263 253 259 292 328 287 368 392 392 380 367 300 309 223 265 237 231 8561
WY WYOMING 401 27 21 40 41 22 27 35 39 42 38 30 43 31 29 26 16 20 928
DC DISTRICT OF COLUMBIA 579 36 32 30 36 27 28 46 32 35 33 26 11 23 13 15 21 18 1041
GU GUAM 5 0 1 1 0 1 1 4 4 1 1 1 0 0 0 0 1 4 25
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 187 10 8 13 10 10 8 12 14 24 10 7 17 11 9 19 17 8 394
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 34 1 2 2 1 1 1 2 1 3 3 1 3 2 4 1 1 3 66
US U.S. UNSPECIFIED REGION 2 7 2 3 1 3 3 2 2 0 1 0 0 0 2 2 2 2 34
ALL ALL STATES 208244 16060 15624 16229 16497 18003 16989 21885 22052 21335 20588 19165 18462 16517 14039 16478 13748 12613 504528

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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