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


Independent Inventors By State By Year
Utility Patents Report
December 2005
JANUARY 1975 -- DECEMBER 2005

INVENTORS DISTRIBUTED BY CALENDAR YEAR OF GRANT

Independent Inventors By State By Year
Utility Patents Report
December 2005
Patents Granted: 1975 - 2005
A Patent Technology Monitoring Branch 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 2005. 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 Electronic Information Products Division.


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 2005
State Code State Name PRE_1989 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Total
AL ALABAMA 1001 118 124 151 109 114 95 124 140 123 173 158 141 176 176 154 144 114 3335
AK ALASKA 217 26 23 36 29 36 34 18 34 37 51 45 27 38 40 33 28 38 790
AZ ARIZONA 3078 359 296 351 336 308 310 360 338 323 442 415 432 419 414 407 361 305 9254
AR ARKANSAS 593 61 81 73 53 57 76 70 70 69 63 85 85 82 79 81 62 59 1799
CA CALIFORNIA 30159 2917 2731 2977 2958 2880 2967 3010 3554 3174 4097 4216 4043 4016 3674 3789 3438 2857 87457
CO COLORADO 2717 331 325 321 379 364 372 371 427 353 465 452 439 431 452 382 340 270 9191
CT CONNECTICUT 3184 302 333 376 317 327 326 344 305 296 430 432 375 390 326 346 248 224 8881
DE DELAWARE 339 33 37 42 32 47 40 52 55 35 37 46 50 60 59 56 49 54 1123
FL FLORIDA 7916 901 875 900 986 919 948 974 1154 1136 1395 1466 1370 1287 1204 1248 1169 1044 26892
GA GEORGIA 2145 203 267 247 258 261 264 278 310 280 428 409 431 462 366 354 285 295 7543
HI HAWAII 425 54 67 50 51 63 51 47 45 60 60 53 58 71 43 41 45 35 1319
ID IDAHO 690 113 100 83 85 83 79 86 85 103 96 139 145 135 126 130 103 79 2460
IL ILLINOIS 8250 759 652 737 647 705 629 772 813 704 978 883 917 785 769 683 616 525 20824
IN INDIANA 2608 208 213 223 200 199 201 213 250 234 288 327 367 272 257 268 219 195 6742
IA IOWA 1454 150 114 117 134 78 119 125 96 126 191 178 148 163 113 116 117 85 3624
KS KANSAS 1403 135 114 124 129 88 123 91 120 110 139 176 158 128 140 146 114 101 3539
KY KENTUCKY 983 113 92 121 92 82 118 107 90 109 126 141 110 124 126 123 93 76 2826
LA LOUISIANA 2088 230 242 235 249 233 212 199 245 234 287 302 329 311 278 217 198 165 6254
ME MAINE 427 45 43 34 55 62 66 64 54 38 66 58 68 65 61 50 47 45 1348
MD MARYLAND 3509 329 265 264 332 323 350 373 362 443 463 489 431 425 366 327 305 256 9612
MA MASSACHUSETTS 4982 456 446 445 463 472 494 511 562 577 720 689 707 643 591 648 472 390 14268
MI MICHIGAN 7392 677 676 732 722 646 726 680 676 617 749 874 834 766 698 641 571 501 19178
MN MINNESOTA 3253 369 347 392 347 331 321 305 343 386 499 395 461 419 425 445 384 325 9747
MS MISSISSIPPI 518 61 82 60 73 75 80 54 73 73 84 117 85 90 70 68 62 50 1775
MO MISSOURI 2323 241 223 254 258 192 235 216 246 328 351 344 325 280 361 265 194 216 6852
MT MONTANA 630 93 69 74 84 79 61 100 77 65 91 85 81 73 79 49 46 42 1878
NE NEBRASKA 954 77 84 80 95 88 94 97 69 76 92 73 92 88 64 74 71 76 2344
NV NEVADA 838 95 84 139 115 114 120 119 132 128 194 232 232 246 208 220 169 182 3567
NH NEW HAMPSHIRE 672 77 113 83 94 82 119 124 129 107 117 144 125 131 109 122 105 90 2543
NJ NEW JERSEY 6967 644 522 602 551 605 569 577 680 724 913 846 767 728 624 606 641 495 18061
NM NEW MEXICO 837 89 78 77 113 112 89 102 107 112 105 122 113 124 107 95 95 63 2540
NY NEW YORK 13731 1196 1275 1319 1146 1148 1237 1296 1305 1166 1599 1482 1427 1255 1280 1106 1066 905 34939
NC NORTH CAROLINA 2222 279 230 302 249 278 295 301 340 367 391 414 410 462 389 388 359 277 7953
ND NORTH DAKOTA 343 41 27 35 37 45 43 44 42 30 36 42 55 61 47 25 26 37 1016
OH OHIO 6337 492 519 529 570 519 529 519 520 503 657 763 589 605 637 563 523 431 15805
OK OKLAHOMA 2246 201 239 230 215 191 179 176 188 168 166 162 178 166 150 160 130 113 5258
OR OREGON 2581 268 244 241 217 232 221 224 241 232 289 292 261 317 279 286 268 232 6925
PA PENNSYLVANIA 6696 598 622 590 608 590 676 610 706 621 933 930 869 783 722 684 594 495 18327
RI RHODE ISLAND 532 73 43 67 62 64 63 68 73 79 64 54 61 52 46 49 45 41 1536
SC SOUTH CAROLINA 1146 135 138 131 172 154 169 129 178 123 208 195 197 189 190 168 164 127 3913
SD SOUTH DAKOTA 292 17 25 14 27 31 33 24 23 35 32 39 40 39 37 28 34 29 799
TN TENNESSEE 1532 189 200 193 228 184 182 171 217 188 279 302 259 233 230 222 205 145 5159
TX TEXAS 8531 890 918 970 957 907 985 1035 1149 975 1306 1338 1345 1295 1179 1094 958 866 26698
UT UTAH 1382 142 148 192 154 213 177 182 198 186 273 242 236 249 252 203 207 161 4797
VT VERMONT 260 27 38 20 43 36 57 50 61 71 44 55 47 71 33 35 39 30 1017
VA VIRGINIA 2725 285 315 316 306 290 296 312 316 292 430 423 417 428 385 419 312 279 8546
WA WASHINGTON 3341 388 383 416 333 366 410 366 377 373 465 389 452 445 432 436 378 311 10061
WV WEST VIRGINIA 480 43 41 36 46 32 41 46 36 44 54 55 49 44 40 38 42 28 1195
WI WISCONSIN 2557 273 279 306 263 253 259 292 328 287 368 392 392 380 367 300 309 223 7828
WY WYOMING 321 17 26 37 27 21 40 41 22 27 35 39 42 38 30 43 31 29 866
DC DISTRICT OF COLUMBIA 496 26 29 28 36 32 30 36 27 28 46 32 35 33 26 11 23 13 987
GU GUAM 3 1 0 1 0 1 1 0 1 1 4 4 1 1 1 0 0 0 20
PR PUERTO RICO 145 20 9 13 10 8 13 10 10 8 12 14 24 10 7 17 11 9 350
AS U.S. PACIFIC IS. 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 2
US UNITED STATES 0 0 0 2 7 2 3 1 3 3 2 2 0 1 0 0 0 2 28
VI VIRGIN (U.S.) ISLANDS 30 0 2 2 1 2 2 1 1 1 2 1 3 3 1 3 2 4 61
  TOTAL 160482 15867 15468 16390 16060 15624 16229 16497 18003 16989 21885 22052 21335 20588 19165 18462 16517 14039 461652


Contact Information

Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Electronic Information Products Division - PTMB (formerly TAF Branch)
MDW 4C18; P.O. Box 1450
Alexandria, VA 22313-1450

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

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