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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
Utility Patents Report
December 2004
JANUARY 1975 -- DECEMBER 2004

INVENTORS DISTRIBUTED BY CALENDAR YEAR OF GRANT

Independent Inventors By State By Year
Utility Patents Report
December 2004
Patents Granted: 1975 - 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')
granted by the U.S. Patent and Trademark Office during the period JANUARY 1975 -- 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 1975 -- 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 912 89 118 124 151 109 114 95 124 140 123 173 158 141 176 176 154 144 3221
AK ALASKA 205 12 26 23 36 29 36 34 18 34 37 51 45 27 38 40 33 28 752
AZ ARIZONA 2767 311 359 296 351 336 308 310 360 338 323 442 415 432 419 414 407 361 8949
AR ARKANSAS 546 47 61 81 73 53 57 76 70 70 69 63 85 85 82 79 81 62 1740
CA CALIFORNIA 27803 2356 2917 2731 2977 2958 2880 2967 3010 3554 3174 4097 4216 4043 4016 3674 3790 3438 84601
CO COLORADO 2469 248 331 325 321 379 364 372 371 427 353 465 452 439 431 452 382 340 8921
CT CONNECTICUT 2934 250 302 333 376 317 327 326 344 305 296 430 432 375 390 326 346 248 8657
DE DELAWARE 317 22 33 37 42 32 47 40 52 55 35 37 46 50 60 59 56 49 1069
FL FLORIDA 7186 730 901 875 900 986 919 948 974 1154 1136 1395 1466 1370 1287 1204 1247 1169 25847
GA GEORGIA 1995 150 203 267 247 258 261 264 278 310 280 428 409 431 462 366 354 285 7248
HI HAWAII 379 46 54 67 50 51 63 51 47 45 60 60 53 58 71 43 41 45 1284
ID IDAHO 641 49 113 100 83 85 83 79 86 85 103 96 139 145 135 126 130 103 2381
IL ILLINOIS 7707 543 759 652 737 647 705 629 772 813 704 978 883 917 785 769 683 616 20299
IN INDIANA 2419 189 208 213 223 200 199 201 213 250 234 288 327 367 272 257 268 219 6547
IA IOWA 1331 123 150 114 117 134 78 119 125 96 126 191 178 148 163 113 116 117 3539
KS KANSAS 1312 91 135 114 124 129 88 123 91 120 110 139 176 158 128 140 146 114 3438
KY KENTUCKY 917 66 113 92 121 92 82 118 107 90 109 126 141 110 124 126 124 93 2751
LA LOUISIANA 1888 200 230 242 235 249 233 212 199 245 234 287 302 329 311 278 217 198 6089
ME MAINE 392 35 45 43 34 55 62 66 64 54 38 66 58 68 65 61 49 47 1302
MD MARYLAND 3281 228 329 265 264 332 323 350 373 362 443 463 489 431 425 366 327 305 9356
MA MASSACHUSETTS 4620 362 456 446 445 463 472 494 511 562 577 720 689 707 643 591 649 472 13879
MI MICHIGAN 6856 536 677 676 732 722 646 726 680 676 617 749 874 834 766 698 641 572 18678
MN MINNESOTA 2978 275 369 347 392 347 331 321 305 343 386 499 395 461 419 425 446 384 9423
MS MISSISSIPPI 457 61 61 82 60 73 75 80 54 73 73 84 117 85 90 70 68 61 1724
MO MISSOURI 2171 152 241 223 254 258 192 235 216 246 328 351 344 325 280 361 265 194 6636
MT MONTANA 578 52 93 69 74 84 79 61 100 77 65 91 85 81 73 79 49 46 1836
NE NEBRASKA 887 67 77 84 80 95 88 94 97 69 76 92 73 92 88 64 75 71 2269
NV NEVADA 777 61 95 84 139 115 114 120 119 132 128 194 232 232 246 208 217 169 3382
NH NEW HAMPSHIRE 609 63 77 113 83 94 82 119 124 129 107 117 144 125 131 109 122 105 2453
NJ NEW JERSEY 6501 466 644 522 602 551 605 569 577 680 724 913 846 767 728 624 606 641 17566
NM NEW MEXICO 769 68 89 78 77 113 112 89 102 107 112 105 122 113 124 107 96 95 2478
NY NEW YORK 12808 923 1196 1275 1319 1146 1148 1237 1296 1305 1166 1599 1482 1427 1255 1280 1106 1066 34034
NC NORTH CAROLINA 2028 194 279 230 302 249 278 295 301 340 367 391 414 410 462 389 388 359 7676
ND NORTH DAKOTA 313 30 41 27 35 37 45 43 44 42 30 36 42 55 61 47 25 26 979
OH OHIO 5888 449 492 519 529 570 519 529 519 520 503 657 763 589 605 637 562 523 15373
OK OKLAHOMA 2089 157 201 239 230 215 191 179 176 188 168 166 162 178 166 150 160 130 5145
OR OREGON 2391 190 268 244 241 217 232 221 224 241 232 289 292 261 317 279 286 268 6693
PA PENNSYLVANIA 6257 439 598 622 590 608 590 676 610 706 621 933 930 869 783 722 683 594 17831
RI RHODE ISLAND 497 35 73 43 67 62 64 63 68 73 79 64 54 61 52 46 49 45 1495
SC SOUTH CAROLINA 1053 93 135 138 131 172 154 169 129 178 123 208 195 197 189 190 168 164 3786
SD SOUTH DAKOTA 269 23 17 25 14 27 31 33 24 23 35 32 39 40 39 37 28 34 770
TN TENNESSEE 1381 151 189 200 193 228 184 182 171 217 188 279 302 259 233 230 222 205 5014
TX TEXAS 7837 694 890 918 970 957 907 985 1035 1149 975 1306 1338 1345 1295 1179 1093 956 25829
UT UTAH 1274 108 142 148 192 154 213 177 182 198 186 273 242 236 249 252 203 207 4636
VT VERMONT 243 17 27 38 20 43 36 57 50 61 71 44 55 47 71 33 35 39 987
VA VIRGINIA 2543 182 285 315 316 306 290 296 312 316 292 430 423 417 428 385 420 312 8268
WA WASHINGTON 3037 304 388 383 416 333 366 410 366 377 373 465 389 452 445 432 436 378 9750
WV WEST VIRGINIA 444 36 43 41 36 46 32 41 46 36 44 54 55 49 44 40 38 42 1167
WI WISCONSIN 2326 231 273 279 306 263 253 259 292 328 287 368 392 392 380 367 300 309 7605
WY WYOMING 307 14 17 26 37 27 21 40 41 22 27 35 39 42 38 30 43 31 837
DC DISTRICT OF COLUMBIA 471 25 26 29 28 36 32 30 36 27 28 46 32 35 33 26 11 23 974
GU GUAM 3 0 1 0 1 0 1 1 0 1 1 4 4 1 1 1 0 0 20
PR PUERTO RICO 132 13 20 9 13 10 8 13 10 10 8 12 14 24 10 7 17 11 341
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 2 7 2 3 1 3 3 2 2 0 1 0 1 0 27
VI VIRGIN (U.S.) ISLANDS 28 2 0 2 2 1 2 2 1 1 1 2 1 3 3 1 3 2 57
    148224 12258 15867 15468 16390 16060 15624 16229 16497 18003 16989 21885 22052 21335 20588 19165 18462 16515 447611

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)
MDW 4C18; P.O. Box 1450
Alexandria, VA 22313-1450

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