| Patents > Guidance, Tools, and Manuals > Classification > US to IPC Concordance |
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| Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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| You are viewing a US to IPC Concordance. |
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| Printable Version[PDF] See notes regarding proper use of US-to-IPC Concordances. | ||
| U.S. Subclass | IPC8 Subclass | IPC8 Group |
|---|---|---|
| 1 | A 47 G | 21 / 02 |
| 1 | B 25 B | 33 / 00 |
| 1.5 - 2 | B 67 B | 7 / 00 |
| 26 - 29 | A 45 D | 29 / 00 |
| 29.5 | B 26 B | 19 / 00 |
| 30 - 31 | B 26 B | 19 / 00 |
| 30 - 31 | B 26 B | 21 / 12 |
| 32 | B 26 B | 21 / 00 |
| 34.05 - 34.1 | B 26 B | 19 / 00 |
| 34.2 | B 26 B | 19 / 42 |
| 35 - 39 | B 26 B | 19 / 38 |
| 40 | B 26 B | 21 / 24 |
| 40.1 | B 26 B | 21 / 26 |
| 40.2 | B 26 B | 21 / 24 |
| 41 - 41.6 | B 26 B | 19 / 44 |
| 41.7 - 41.8 | B 26 B | 21 / 40 |
| 41.9 | B 26 B | 19 / 08 |
| 42 | B 26 B | 19 / 28 |
| 43 | B 26 B | 19 / 20 |
| 43.1 - 43.3 | B 26 B | 19 / 00 |
| 43.4 - 43.6 | B 26 B | 19 / 14 |
| 43.7 - 43.9 | B 26 B | 19 / 12 |
| 43.91 - 43.92 | B 26 B | 19 / 02 |
| 44 - 45 | B 26 B | 19 / 28 |
| 46 | B 26 B | 19 / 30 |
| 47 - 50 | B 26 B | 21 / 00 |
| 51 | B 26 B | 21 / 08 |
| 52 - 55 | B 26 B | 21 / 00 |
| 57 - 84 | B 26 B | 21 / 14 |
| 90.1 - 91.2 | B 21 F | 13 / 00 |
| 90.1 - 91.2 | B 26 B | 27 / 00 |
| 92 - 108 | B 23 D | 21 / 06 |
| 92 - 108 | B 26 B | 27 / 00 |
| 92 - 108 | B 26 D | 3 / 16 |
| 109 - 113 | A 24 C | 1 / 24 |
| 109 - 113 | A 24 C | 5 / 12 |
| 109 - 113 | A 24 C | 5 / 28 |
| 113.1 - 113.3 | A 47 J | 23 / 00 |
| 113.1 - 113.3 | A 47 J | 25 / 00 |
| 114 | A 21 C | 5 / 08 |
| 114 | A 21 C | 15 / 04 |
| 115 - 117 | A 21 C | 5 / 00 |
| 118 | A 41 H | 25 / 00 |
| 118 | B 26 B | 1 / 00 |
| 118 | B 26 B | 13 / 00 |
| 119 | A 41 H | 25 / 00 |
| 119 | B 26 B | 1 / 00 |
| 120 | A 41 H | 25 / 00 |
| 120 | B 26 B | 13 / 06 |
| 120.1 | A 23 N | 5 / 00 |
| 120.1 | A 47 J | 43 / 26 |
| 120.1 | B 26 B | 17 / 00 |
| 120.2 - 120.3 | A 47 J | 43 / 26 |
| 120.2 - 120.3 | B 26 B | 17 / 00 |
| 120.4 | A 47 J | 43 / 26 |
| 120.4 | B 26 B | 17 / 02 |
| 120.5 | A 47 J | 43 / 26 |
| 120.5 | B 26 B | 17 / 00 |
| 121 | A 01 G | 3 / 08 |
| 121 | B 26 B | 23 / 00 |
| 121.5 | A 47 J | 17 / 02 |
| 122 | B 25 F | 3 / 00 |
| 122 | B 26 B | 11 / 00 |
| 123 - 123.3 | B 25 F | 3 / 00 |
| 123 - 123.3 | B 26 B | 1 / 00 |
| 123 - 123.3 | B 26 B | 3 / 00 |
| 123 - 123.3 | B 26 B | 11 / 00 |
| 123.4 | B 23 D | 59 / 04 |
| 123.4 | B 23 Q | 11 / 12 |
| 123.4 | B 26 B | 7 / 00 |
| 123.5 - 123.7 | A 22 B | 5 / 16 |
| 123.5 - 123.7 | B 26 B | 11 / 00 |
| 124 - 136.5 | B 25 F | 3 / 00 |
| 124 - 136.5 | B 26 B | 1 / 00 |
| 124 - 136.5 | B 26 B | 3 / 00 |
| 124 - 136.5 | B 26 B | 11 / 00 |
| 137 | A 47 J | 43 / 28 |
| 137 | B 25 F | 3 / 00 |
| 137 | B 26 B | 1 / 00 |
| 137 | B 26 B | 3 / 00 |
| 137 | B 26 B | 11 / 00 |
| 138 - 140 | B 25 F | 3 / 00 |
| 138 - 140 | B 26 B | 1 / 00 |
| 138 - 140 | B 26 B | 3 / 00 |
| 138 - 140 | B 26 B | 11 / 00 |
| 141 | A 47 J | 43 / 28 |
| 142 - 146 | B 25 F | 3 / 00 |
| 142 - 146 | B 26 B | 1 / 00 |
| 142 - 146 | B 26 B | 3 / 00 |
| 142 - 146 | B 26 B | 11 / 00 |
| 147 - 150 | A 47 J | 43 / 28 |
| 151 - 164 | B 26 B | 3 / 06 |
| 151 - 164 | F 41 B | 13 / 02 |
| 151 - 164 | F 41 C | 27 / 18 |
| 164.5 - 164.8 | B 02 C | 18 / 00 |
| 164.5 - 164.8 | F 25 C | 5 / 16 |
| 164.9 | B 26 B | 3 / 00 |
| 164.9 | B 41 C | 1 / 04 |
| 164.9 | B 41 C | 1 / 055 |
| 164.95 | B 26 B | 3 / 00 |
| 165 | B 26 B | 3 / 00 |
| 166.3 | B 23 D | 45 / 00 |
| 166.3 | B 27 B | 5 / 29 |
| 166.3 | B 27 B | 19 / 09 |
| 166.3 | B 27 B | 23 / 00 |
| 166.3 | B 27 B | 33 / 20 |
| 167 - 167.2 | B 25 D | 3 / 00 |
| 168 - 172 | B 26 B | 3 / 00 |
| 173 - 174 | B 26 B | 13 / 00 |
| 173 - 174 | B 26 B | 15 / 00 |
| 173 - 174 | B 26 B | 17 / 00 |
| 175 - 193 | B 26 B | 17 / 00 |
| 194 | B 26 B | 13 / 00 |
| 194 | B 26 B | 19 / 00 |
| 195 | B 26 B | 19 / 22 |
| 196 - 204 | B 26 B | 19 / 00 |
| 205 - 207 | B 26 B | 19 / 14 |
| 208 - 222 | B 26 B | 19 / 02 |
| 208 - 222 | B 26 B | 19 / 12 |
| 223 - 225 | B 26 B | 19 / 00 |
| 226 - 227 | B 26 B | 13 / 00 |
| 228 | B 26 B | 15 / 00 |
| 229 - 263 | B 26 B | 13 / 00 |
| 264 | B 26 B | 15 / 00 |
| 265 | B 26 B | 13 / 00 |
| 266 | B 26 B | 13 / 28 |
| 267 - 271 | B 26 B | 13 / 00 |
| 272.1 - 277 | B 26 B | 7 / 00 |
| 277.4 | B 26 B | 15 / 00 |
| 278 | A 01 D | 1 / 00 |
| 278 | B 26 B | 3 / 00 |
| 278 | B 26 B | 13 / 00 |
| 279.2 - 279.6 | A 01 D | 1 / 00 |
| 279.2 - 279.6 | B 26 B | 13 / 00 |
| 280 - 283 | B 26 B | 3 / 00 |
| 284 - 288 | B 26 B | 29 / 00 |
| 289 | B 26 B | 29 / 00 |
| 289 | B 26 B | 29 / 06 |
| 290 - 295 | B 26 B | 29 / 00 |
| 296.1 - 298.4 | B 26 B | 27 / 00 |
| 299 - 308 | B 26 B | 3 / 00 |
| 308.1 - 308.3 | B 26 B | 23 / 00 |
| 309 - 319 | B 26 B | 3 / 00 |
| 320 - 321 | B 26 B | 1 / 00 |
| 322 - 328 | A 47 J | 43 / 28 |
| 329 - 339 | B 26 B | 1 / 00 |
| 340 - 341 | B 25 G | 1 / 00 |
| 340 - 341 | B 25 G | 1 / 12 |
| 340 - 341 | B 25 G | 3 / 00 |
| 342 - 345 | B 25 G | 3 / 00 |
| 346 | B 26 B | 9 / 00 |
| 346.5 | B 26 B | 21 / 54 |
| 346.51 | B 26 B | 19 / 04 |
| 346.52 - 346.61 | B 26 B | 21 / 54 |
| 347 - 352 | B 26 B | 9 / 00 |
| 353 | B 26 B | 9 / 00 |
| 353 | B 26 B | 19 / 04 |
| 355 - 357 | B 26 B | 9 / 02 |
| 358 - 368 | B 26 F | 1 / 00 |
| 369 | B 23 D | 49 / 00 |
| 369 | B 27 B | 3 / 28 |
| 369 | B 27 B | 5 / 29 |
| 369 | B 27 B | 9 / 00 |
| 369 | B 27 B | 19 / 09 |
| 369 | B 27 B | 33 / 20 |
| 370 | B 23 D | 47 / 02 |
| 370 | B 23 D | 51 / 02 |
| 370 | B 23 D | 51 / 04 |
| 370 | B 23 D | 59 / 00 |
| 370 | B 27 B | 3 / 28 |
| 370 | B 27 B | 9 / 00 |
| 371 | B 23 B | 29 / 00 |
| 371 | B 23 D | 47 / 02 |
| 371 | B 23 D | 51 / 02 |
| 371 | B 23 D | 51 / 04 |
| 371 | B 23 D | 59 / 00 |
| 371 | B 27 B | 21 / 08 |
| 372 | B 23 B | 27 / 08 |
| 372 | B 23 D | 47 / 02 |
| 372 | B 23 D | 51 / 02 |
| 372 | B 23 D | 51 / 04 |
| 372 | B 23 D | 59 / 00 |
| 372 | B 27 B | 19 / 14 |
| 373 | B 23 D | 47 / 02 |
| 373 | B 23 D | 51 / 02 |
| 373 | B 23 D | 51 / 04 |
| 373 | B 23 D | 59 / 00 |
| 373 | B 27 B | 9 / 04 |
| 373 | B 27 B | 19 / 14 |
| 374 | B 23 D | 47 / 02 |
| 374 | B 23 D | 51 / 02 |
| 374 | B 23 D | 59 / 00 |
| 374 | B 27 B | 9 / 04 |
| 374 | B 27 B | 19 / 14 |
| 374 | B 27 B | 21 / 08 |
| 375 - 377 | B 23 D | 47 / 02 |
| 375 - 377 | B 23 D | 51 / 02 |
| 375 - 377 | B 23 D | 59 / 00 |
| 375 - 377 | B 27 B | 9 / 02 |
| 375 - 377 | B 27 B | 19 / 14 |
| 375 - 377 | B 27 B | 21 / 08 |
| 378 | B 23 D | 47 / 04 |
| 378 | B 23 D | 51 / 04 |
| 378 | B 27 B | 21 / 00 |
| 378 | B 27 B | 25 / 10 |
| 379 - 379.5 | B 23 D | 45 / 00 |
| 379 - 379.5 | B 27 B | 9 / 00 |
| 379 - 379.5 | B 27 B | 19 / 14 |
| 380 | B 23 D | 53 / 00 |
| 380 | B 23 D | 55 / 00 |
| 380 | B 27 B | 13 / 00 |
| 380 | B 27 B | 15 / 00 |
| 381 | B 23 D | 57 / 02 |
| 381 | B 27 B | 17 / 00 |
| 382 | B 23 D | 57 / 02 |
| 382 | B 23 D | 59 / 00 |
| 382 | B 27 B | 17 / 00 |
| 383 | B 23 D | 57 / 02 |
| 383 | B 23 D | 59 / 00 |
| 383 | B 27 B | 17 / 02 |
| 384 - 385 | B 23 D | 57 / 02 |
| 384 - 385 | B 23 D | 59 / 00 |
| 384 - 385 | B 27 B | 17 / 00 |
| 384 - 385 | B 27 B | 17 / 04 |
| 386 | B 23 D | 57 / 02 |
| 386 | B 23 D | 59 / 00 |
| 386 | B 27 B | 17 / 00 |
| 387 | B 23 D | 57 / 02 |
| 387 | B 27 B | 17 / 02 |
| 388 | B 23 D | 45 / 16 |
| 389 | B 23 D | 45 / 16 |
| 389 | B 23 D | 47 / 12 |
| 389 | B 27 B | 9 / 00 |
| 390 - 391 | B 23 D | 45 / 16 |
| 390 - 391 | B 23 D | 47 / 00 |
| 390 - 391 | B 27 B | 9 / 00 |
| 390 - 391 | B 27 B | 9 / 04 |
| 392 - 393 | B 23 D | 49 / 00 |
| 392 - 393 | B 27 B | 3 / 12 |
| 392 - 393 | B 27 B | 3 / 26 |
| 392 - 393 | B 27 B | 19 / 00 |
| 394 | B 23 D | 49 / 00 |
| 394 | B 27 B | 19 / 00 |
| 394 | B 27 B | 19 / 04 |
| 400 | B 67 B | 7 / 46 |
| 401 - 405 | B 67 B | 7 / 46 |
| 401 - 405 | B 67 B | 7 / 90 |
| 406 | B 67 B | 7 / 46 |
| 406 | B 67 B | 7 / 88 |
| 407 | B 67 B | 7 / 46 |
| 407 | B 67 B | 7 / 86 |
| 408 | B 67 B | 7 / 46 |
| 408 | B 67 B | 7 / 78 |
| 409 | B 67 B | 7 / 46 |
| 409 | B 67 B | 7 / 84 |
| 410 | B 67 B | 7 / 46 |
| 411 | B 67 B | 7 / 46 |
| 411 | B 67 B | 7 / 80 |
| 412 - 415 | B 67 B | 7 / 46 |
| 412 - 415 | B 67 B | 7 / 78 |
| 416 - 427 | B 67 B | 7 / 46 |
| 416 - 427 | B 67 B | 7 / 70 |
| 428 | B 67 B | 7 / 46 |
| 428 | B 67 B | 7 / 68 |
| 429 - 432 | B 67 B | 7 / 46 |
| 429 - 432 | B 67 B | 7 / 62 |
| 433 - 434 | B 67 B | 7 / 46 |
| 435 - 442 | B 67 B | 7 / 46 |
| 435 - 442 | B 67 B | 7 / 54 |
| 443 - 450 | B 67 B | 7 / 46 |
| 443 - 450 | B 67 B | 7 / 48 |
| 451 - 454 | B 43 L | 23 / 00 |
| 455 - 456 | B 43 L | 23 / 06 |
| 457 - 461 | B 43 L | 23 / 00 |
| 462 | B 43 L | 23 / 06 |
| 475 - 477 | B 27 C | 1 / 10 |
| 478 - 480 | B 27 G | 17 / 02 |
| 481 | B 27 G | 23 / 00 |
| 482 - 483 | B 27 G | 17 / 02 |
| 484 - 486 | B 27 F | 1 / 00 |
| 487 - 490 | B 27 G | 17 / 02 |
| 491 | B 25 G | 3 / 00 |
| 492 - 493 | B 27 G | 17 / 02 |
| 494 | B 27 L | 9 / 00 |
| 495 | B 27 F | 1 / 10 |
| 500 | B 23 B | 51 / 00 |
| 500 | B 25 B | 21 / 00 |
| 501 - 504 | B 27 B | 21 / 00 |
| 505 | B 27 B | 21 / 08 |
| 506 | B 27 B | 21 / 02 |
| 507 - 509 | B 27 B | 21 / 00 |
| 510 | B 23 D | 51 / 03 |
| 510 | B 27 B | 21 / 00 |
| 511 | B 27 B | 21 / 00 |
| 512 | B 23 D | 51 / 03 |
| 512 | B 27 B | 21 / 00 |
| 513 | B 27 B | 21 / 06 |
| 514 - 516 | B 27 B | 21 / 00 |
| 517 | B 23 D | 51 / 01 |
| 517 | B 27 B | 21 / 00 |
| 518 | B 23 D | 49 / 11 |
| 518 | B 27 B | 21 / 00 |
| 519 - 525 | B 27 B | 21 / 00 |
| 526 | B 26 B | 21 / 00 |
| 527 | B 26 B | 21 / 00 |
| 527 | B 26 B | 21 / 52 |
| 528 | B 26 B | 21 / 00 |
| 529 | B 26 B | 21 / 00 |
| 529 | B 26 B | 21 / 52 |
| 530 | B 26 B | 21 / 00 |