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U.S. PATENT AND TRADEMARK OFFICE
Office of Electronic Information Products
Patent Technology Monitoring Division (PTMD)

Independent Inventors By State By Year
All Patent Types Report
December 2004
JANUARY 1977 -- DECEMBER 2004

INVENTORS DISTRIBUTED BY CALENDAR YEAR OF GRANT

Independent Inventors By State By Year
All Patent Types Report
December 2004
Patents Granted: 1977 - 2004
A Patent Technology Monitoring Division 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 the patent has more than one inventor, each inventor is counted according to his or her state of residence. 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 2004

The source of the data used for this report is the TAF database maintained by the Office of Electronic Information Products.

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. If an inventor has more than one patent he or she is counted once for each patent.
Counted patents are those granted: JANUARY 1977 -- DECEMBER 2004
State Code State Name PRE_1988 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Total
AL ALABAMA 994 109 154 160 174 133 142 150 160 183 160 206 237 209 246 207 213 171 4008
AK ALASKA 185 15 27 27 44 39 52 43 30 52 52 65 60 42 48 47 41 37 906
AZ ARIZONA 2742 339 387 364 407 387 377 393 445 413 417 569 491 526 500 472 463 425 10117
AR ARKANSAS 566 57 74 98 96 76 78 97 93 103 87 83 112 102 110 96 100 80 2108
CA CALIFORNIA 28293 2886 3446 3363 3812 3774 3784 3833 3991 4437 4160 5325 5264 5215 5062 4828 4822 4306 100601
CO COLORADO 2527 287 385 377 386 452 472 474 445 538 438 564 541 540 487 517 449 418 10297
CT CONNECTICUT 2748 289 340 379 436 354 414 405 406 362 346 528 523 438 444 372 398 298 9480
DE DELAWARE 297 26 38 41 50 38 57 49 58 72 40 46 53 53 65 67 59 63 1172
FL FLORIDA 7251 831 1029 1047 1109 1170 1144 1199 1305 1447 1404 1719 1749 1725 1590 1466 1574 1452 30211
GA GEORGIA 1970 173 241 324 329 342 374 375 401 426 353 537 507 522 548 473 424 359 8678
HI HAWAII 358 52 65 83 71 61 87 73 64 70 76 70 70 76 87 51 54 52 1520
ID IDAHO 622 54 119 124 98 107 105 113 108 112 125 113 162 173 163 149 159 122 2728
IL ILLINOIS 7272 625 847 772 861 794 893 840 998 973 870 1206 1083 1110 978 896 859 767 22644
IN INDIANA 2431 244 243 256 297 245 266 269 284 310 290 343 384 430 353 336 346 282 7609
IA IOWA 1339 140 175 140 153 162 134 160 162 128 150 226 197 173 191 124 134 128 4016
KS KANSAS 1254 108 156 148 151 160 124 156 128 150 141 161 210 201 155 171 175 145 3894
KY KENTUCKY 849 81 132 106 146 110 102 135 146 124 129 151 161 133 151 141 142 114 3053
LA LOUISIANA 1742 218 250 274 264 280 282 243 244 283 260 341 334 381 344 317 252 229 6538
ME MAINE 394 40 51 51 40 74 83 89 88 69 53 76 74 82 70 70 52 50 1506
MD MARYLAND 3085 255 364 305 367 423 387 428 463 429 485 545 550 482 468 416 363 351 10166
MA MASSACHUSETTS 4351 394 488 512 496 532 584 601 615 660 663 870 793 832 733 691 749 561 15125
MI MICHIGAN 6473 596 758 776 855 807 801 904 839 845 741 893 1038 974 882 868 802 718 20570
MN MINNESOTA 2999 316 423 425 468 435 421 399 436 428 461 655 474 592 538 514 570 468 11022
MS MISSISSIPPI 409 71 68 87 77 88 100 112 75 92 99 102 141 107 102 84 87 76 1977
MO MISSOURI 2077 185 279 269 301 315 249 308 313 313 393 441 416 403 344 420 325 239 7590
MT MONTANA 548 58 96 76 86 101 100 73 120 108 83 111 94 105 87 88 53 54 2041
NE NEBRASKA 884 77 79 93 96 107 104 117 113 86 90 104 92 113 97 82 107 80 2521
NV NEVADA 800 65 107 98 170 133 156 166 161 172 161 245 279 307 293 252 272 200 4037
NH NEW HAMPSHIRE 592 65 84 122 103 111 104 148 154 164 135 131 165 150 147 121 135 123 2754
NJ NEW JERSEY 6148 525 701 616 704 668 797 739 713 836 839 1122 1024 943 868 730 734 740 19447
NM NEW MEXICO 703 83 98 83 94 126 134 117 130 122 126 121 139 135 135 120 104 105 2675
NY NEW YORK 12284 1049 1328 1489 1520 1375 1520 1504 1608 1628 1456 1979 1802 1773 1585 1555 1358 1349 38162
NC NORTH CAROLINA 2113 237 322 290 366 316 367 375 387 428 461 489 520 547 583 526 498 451 9276
ND NORTH DAKOTA 313 38 45 32 41 45 50 48 47 49 37 42 47 57 61 49 25 33 1059
OH OHIO 5642 519 589 645 680 684 664 692 708 669 672 844 936 814 791 791 771 667 17778
OK OKLAHOMA 2023 194 234 296 280 280 294 243 230 228 192 206 196 225 195 193 203 152 5864
OR OREGON 2363 219 318 299 299 257 332 281 315 352 312 384 384 366 421 392 336 332 7962
PA PENNSYLVANIA 5721 509 673 725 711 721 780 849 794 890 776 1163 1091 1011 900 840 803 708 19665
RI RHODE ISLAND 553 46 85 57 85 83 90 86 87 95 105 91 81 82 65 62 81 63 1897
SC SOUTH CAROLINA 1025 105 156 153 156 215 195 199 161 217 156 261 236 246 236 237 198 195 4347
SD SOUTH DAKOTA 254 25 20 33 26 35 44 37 36 27 41 32 47 50 47 43 33 38 868
TN TENNESSEE 1456 196 221 228 239 264 245 221 231 274 252 337 373 327 292 296 281 257 5990
TX TEXAS 7627 815 1018 1119 1175 1142 1164 1244 1265 1370 1163 1564 1572 1608 1490 1314 1238 1142 29030
UT UTAH 1271 128 167 178 219 202 258 240 230 245 224 322 287 286 287 292 233 237 5306
VT VERMONT 261 30 31 51 34 55 62 78 68 82 84 67 69 63 76 38 38 43 1230
VA VIRGINIA 2433 224 319 369 401 359 359 362 393 389 349 500 485 496 519 449 470 354 9230
WA WASHINGTON 2916 357 437 433 507 385 464 500 463 485 467 577 485 553 538 503 530 457 11057
WV WEST VIRGINIA 405 42 48 51 44 50 40 63 60 54 54 66 63 56 49 48 41 51 1285
WI WISCONSIN 2189 265 304 326 359 325 310 307 355 380 342 457 484 501 470 405 362 378 8519
WY WYOMING 283 19 19 32 41 27 35 52 71 34 37 37 44 48 43 32 49 33 936
DC DISTRICT OF COLUMBIA 424 27 29 32 32 41 39 35 41 28 35 56 43 37 38 29 12 26 1004
GU GUAM 3 0 3 0 1 0 1 1 2 2 2 4 4 2 6 2 0 0 33
PR PUERTO RICO 146 13 21 16 14 12 11 16 13 12 13 13 25 29 11 11 18 11 405
AS U.S. PACIFIC IS. 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 2
US UNITED STATES 0 0 0 0 3 11 4 4 1 5 4 2 5 1 1 0 1 0 42
VI VIRGIN (U.S.) ISLANDS 24 2 0 2 2 1 2 2 3 2 1 2 1 3 3 1 4 2 57
    144633 14323 18091 18452 19976 19489 20237 20647 21257 22452 21063 27164 26697 26455 24993 23294 22600 20192 512015

Contact Information

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Office of Electronic Information Products - PTMD (formerly TAF Branch)
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