| 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 44 B | 21 / 00 |
| 2 | B 42 D | 3 / 10 |
| 2.5 | F 41 C | 23 / 00 |
| 3.1 - 3.5 | A 44 B | 21 / 00 |
| 3.1 - 3.5 | A 45 F | 5 / 00 |
| 3.6 | A 44 B | 15 / 00 |
| 3.6 | A 44 B | 21 / 00 |
| 3.6 | A 45 F | 5 / 00 |
| 3.7 | A 44 B | 21 / 00 |
| 3.7 | A 45 F | 5 / 00 |
| 3.8 - 3.9 | A 44 B | 21 / 00 |
| 4 | A 44 B | 21 / 00 |
| 4 | A 45 F | 5 / 02 |
| 5 - 6 | A 45 F | 5 / 08 |
| 7 - 9 | A 45 F | 5 / 04 |
| 10A - 11C | B 43 K | 25 / 00 |
| 11F | B 43 K | 25 / 00 |
| 11M - 11P | B 43 K | 25 / 00 |
| 11R - 11S | B 43 K | 25 / 00 |
| 11CC - 11CT | B 43 K | 25 / 00 |
| 11FE - 11HC | B 43 K | 25 / 00 |
| 11PP | B 43 K | 25 / 00 |
| 12 | B 43 K | 25 / 00 |
| 13 | A 44 B | 21 / 00 |
| 13 | A 45 F | 5 / 02 |
| 15 | A 41 F | 17 / 00 |
| 15 | A 44 B | 21 / 00 |
| 16R | B 65 D | 63 / 00 |
| 16R | B 65 D | 67 / 02 |
| 16R | F 16 L | 33 / 00 |
| 16PB | B 65 D | 63 / 00 |
| 16PB | B 65 D | 67 / 02 |
| 16PB | F 16 L | 33 / 00 |
| 17A | B 65 D | 63 / 00 |
| 17A | B 65 D | 67 / 02 |
| 17A | F 16 L | 33 / 00 |
| 17B - 17R | B 65 D | 63 / 00 |
| 17B - 17R | B 65 D | 67 / 02 |
| 17B - 17R | F 16 L | 33 / 00 |
| 17AP | B 65 D | 63 / 00 |
| 17AP | B 65 D | 67 / 02 |
| 17AP | F 16 L | 33 / 00 |
| 18 - 19 | B 65 D | 63 / 00 |
| 18 - 19 | B 65 D | 67 / 02 |
| 18 - 19 | F 16 L | 33 / 00 |
| 20R | B 65 D | 63 / 02 |
| 20R | F 16 L | 33 / 00 |
| 20R | F 16 L | 33 / 22 |
| 20S | B 65 D | 63 / 10 |
| 20S | F 16 L | 33 / 02 |
| 20S | F 16 L | 33 / 03 |
| 20W | B 65 D | 63 / 04 |
| 20W | B 65 D | 63 / 06 |
| 20CW | F 16 B | 2 / 08 |
| 20CW | F 16 L | 33 / 025 |
| 20CW | F 16 L | 33 / 035 |
| 20EE | B 65 D | 63 / 02 |
| 20EE | B 65 D | 63 / 04 |
| 20EE | B 65 D | 63 / 06 |
| 20LS | B 25 B | 31 / 00 |
| 20LS | F 16 B | 7 / 08 |
| 20LS | F 16 L | 33 / 02 |
| 20TT | F 16 B | 2 / 08 |
| 20TT | F 16 L | 33 / 025 |
| 20TT | F 16 L | 33 / 035 |
| 21 - 23B | B 65 D | 63 / 06 |
| 21 - 23B | F 16 L | 33 / 00 |
| 23R - 23W | B 65 D | 63 / 06 |
| 23R - 23W | F 16 L | 33 / 00 |
| 23EE | B 65 D | 63 / 06 |
| 23EE | F 16 L | 33 / 00 |
| 24 | B 65 D | 63 / 06 |
| 24 | F 16 L | 33 / 00 |
| 25 | B 65 D | 63 / 08 |
| 25 | F 16 L | 33 / 00 |
| 26 | B 65 D | 63 / 06 |
| 26 | F 16 L | 33 / 00 |
| 27 - 30 | B 65 D | 63 / 10 |
| 27 - 30 | F 16 L | 33 / 00 |
| 30.5L | A 22 C | 15 / 00 |
| 30.5L | B 65 D | 33 / 16 |
| 30.5L | F 16 G | 11 / 04 |
| 30.5P | B 65 D | 33 / 16 |
| 30.5P | B 65 D | 63 / 10 |
| 30.5P | B 65 D | 77 / 18 |
| 30.5R | B 65 D | 33 / 16 |
| 30.5R | B 65 D | 33 / 25 |
| 30.5R | B 65 D | 77 / 18 |
| 30.5S | A 01 G | 13 / 04 |
| 30.5S | B 25 H | 3 / 04 |
| 30.5S | B 65 D | 33 / 16 |
| 30.5T | B 65 D | 63 / 10 |
| 30.5T | B 65 D | 63 / 12 |
| 30.5T | B 65 D | 77 / 18 |
| 30.5W | A 22 C | 11 / 12 |
| 30.5W | B 65 B | 51 / 04 |
| 30.5W | B 65 D | 33 / 16 |
| 31B | F 16 G | 3 / 08 |
| 31B | F 16 G | 7 / 00 |
| 31B | F 16 G | 11 / 08 |
| 31C | F 16 G | 3 / 00 |
| 31C | F 16 G | 7 / 00 |
| 31C | F 16 G | 11 / 08 |
| 31F | A 01 D | 17 / 10 |
| 31F | F 16 G | 3 / 00 |
| 31F | F 16 G | 3 / 06 |
| 31H | D 21 F | 7 / 10 |
| 31H | F 16 G | 3 / 00 |
| 31H | F 16 G | 3 / 04 |
| 31L | F 16 G | 3 / 00 |
| 31L | F 16 G | 3 / 08 |
| 31L | F 16 G | 7 / 00 |
| 31R | F 16 G | 3 / 00 |
| 31R | F 16 G | 7 / 00 |
| 31V | A 44 B | 18 / 00 |
| 31V | B 01 D | 33 / 00 |
| 31V | B 65 H | 21 / 00 |
| 31W | F 16 G | 3 / 00 |
| 31W | F 16 G | 3 / 08 |
| 31W | F 16 G | 7 / 00 |
| 32 | F 16 G | 3 / 00 |
| 32 | F 16 G | 7 / 00 |
| 33A | F 16 G | 3 / 00 |
| 33B | F 16 G | 3 / 00 |
| 33B | F 16 G | 3 / 02 |
| 33B | F 16 G | 7 / 00 |
| 33C | D 21 F | 7 / 10 |
| 33C | F 16 G | 3 / 02 |
| 33C | F 16 G | 3 / 04 |
| 33F | F 16 G | 3 / 00 |
| 33F | F 16 G | 3 / 06 |
| 33K | B 41 L | 9 / 08 |
| 33K | D 21 F | 7 / 10 |
| 33K | F 16 G | 3 / 00 |
| 33M | A 44 B | 11 / 00 |
| 33M | F 16 G | 3 / 02 |
| 33M | F 16 G | 7 / 00 |
| 33P | F 16 G | 3 / 02 |
| 33P | F 16 G | 3 / 04 |
| 33P | F 16 G | 7 / 00 |
| 33R | A 41 H | 37 / 06 |
| 33R | F 16 G | 3 / 02 |
| 33R | F 16 G | 3 / 04 |
| 33V | F 16 G | 7 / 00 |
| 33V | F 16 G | 11 / 00 |
| 33V | F 16 G | 11 / 08 |
| 34 | F 16 G | 3 / 10 |
| 35 - 36 | F 16 G | 3 / 00 |
| 35 - 36 | F 16 G | 7 / 00 |
| 37 | F 16 G | 3 / 08 |
| 38 - 39 | F 16 G | 3 / 00 |
| 38 - 39 | F 16 G | 7 / 00 |
| 40 | A 41 F | 1 / 02 |
| 40 | A 43 C | 11 / 02 |
| 40 | A 44 B | 1 / 18 |
| 40 | A 47 G | 25 / 92 |
| 41.1 | A 41 B | 7 / 04 |
| 41.1 | A 41 B | 7 / 06 |
| 42 - 48 | A 41 B | 7 / 04 |
| 42 - 48 | A 41 B | 7 / 06 |
| 42 - 48 | A 44 B | 5 / 00 |
| 49.1 | A 41 D | 25 / 00 |
| 50 - 55 | A 41 D | 25 / 04 |
| 56 - 57 | A 41 D | 25 / 02 |
| 58 | A 44 B | 6 / 00 |
| 59 | A 41 D | 25 / 02 |
| 59 | A 44 B | 1 / 04 |
| 59 | A 44 B | 11 / 25 |
| 59 | A 44 B | 17 / 00 |
| 60 | A 41 D | 25 / 12 |
| 60 | A 44 B | 1 / 04 |
| 60 | A 44 B | 11 / 25 |
| 60 | A 44 B | 17 / 00 |
| 61 | A 44 B | 1 / 04 |
| 61 | A 44 B | 3 / 00 |
| 61 | A 44 B | 11 / 25 |
| 61 | A 44 B | 17 / 00 |
| 62 | A 44 B | 1 / 04 |
| 62 | A 44 B | 11 / 25 |
| 62 | A 44 B | 17 / 00 |
| 63 | A 44 B | 1 / 04 |
| 63 | A 44 B | 3 / 00 |
| 63 | A 44 B | 11 / 25 |
| 63 | A 44 B | 17 / 00 |
| 64 - 65 | A 41 D | 25 / 02 |
| 64 - 65 | A 44 B | 1 / 04 |
| 64 - 65 | A 44 B | 11 / 25 |
| 64 - 65 | A 44 B | 17 / 00 |
| 66.1 - 66.2 | A 41 D | 25 / 04 |
| 66.3 | A 41 D | 25 / 10 |
| 66.3 | A 41 D | 25 / 12 |
| 66.4 - 66.6 | A 41 D | 25 / 04 |
| 66.7 | A 41 D | 25 / 16 |
| 66.8 - 66.9 | A 41 D | 25 / 04 |
| 67P - 67R | A 44 B | 1 / 04 |
| 67P - 67R | A 44 B | 11 / 25 |
| 67P - 67R | A 44 B | 17 / 00 |
| 67P - 67R | B 42 F | 1 / 00 |
| 67AR - 67CF | A 44 B | 1 / 04 |
| 67AR - 67CF | A 44 B | 11 / 25 |
| 67AR - 67CF | A 44 B | 17 / 00 |
| 67AR - 67CF | B 42 F | 1 / 00 |
| 67.1 - 67.7 | A 44 B | 1 / 04 |
| 67.1 - 67.7 | A 44 B | 11 / 25 |
| 67.1 - 67.7 | A 44 B | 17 / 00 |
| 67.1 - 67.7 | B 42 F | 1 / 00 |
| 67.9 | A 44 B | 1 / 04 |
| 67.9 | A 44 B | 11 / 25 |
| 67.9 | A 44 B | 17 / 00 |
| 67.9 | B 42 F | 1 / 02 |
| 68A | A 43 C | 11 / 00 |
| 68A | A 44 B | 1 / 04 |
| 68A | A 44 B | 11 / 25 |
| 68A | A 44 B | 17 / 00 |
| 68A | A 44 B | 21 / 00 |
| 68B | A 43 C | 11 / 00 |
| 68B | A 44 B | 1 / 04 |
| 68B | A 44 B | 11 / 25 |
| 68B | A 44 B | 17 / 00 |
| 68B | A 44 B | 21 / 00 |
| 68C | A 43 C | 11 / 00 |
| 68C | A 44 B | 1 / 04 |
| 68C | A 44 B | 11 / 25 |
| 68C | A 44 B | 17 / 00 |
| 68C | A 44 B | 21 / 00 |
| 68D - 68F | A 43 C | 11 / 00 |
| 68D - 68F | A 44 B | 1 / 04 |
| 68D - 68F | A 44 B | 11 / 25 |
| 68D - 68F | A 44 B | 17 / 00 |
| 68D - 68F | A 44 B | 21 / 00 |
| 68J | A 43 C | 11 / 00 |
| 68J | A 44 B | 1 / 04 |
| 68J | A 44 B | 11 / 25 |
| 68J | A 44 B | 17 / 00 |
| 68J | A 44 B | 21 / 00 |
| 68R | A 43 C | 11 / 00 |
| 68R | A 44 B | 1 / 04 |
| 68R | A 44 B | 11 / 25 |
| 68R | A 44 B | 17 / 00 |
| 68R | A 44 B | 21 / 00 |
| 68T | A 43 C | 11 / 00 |
| 68T | A 44 B | 1 / 04 |
| 68T | A 44 B | 11 / 25 |
| 68T | A 44 B | 17 / 00 |
| 68T | A 44 B | 21 / 00 |
| 68AS | A 43 C | 11 / 00 |
| 68AS | A 44 B | 1 / 04 |
| 68AS | A 44 B | 11 / 25 |
| 68AS | A 44 B | 17 / 00 |
| 68AS | A 44 B | 21 / 00 |
| 68BT | A 43 C | 11 / 00 |
| 68BT | A 44 B | 1 / 04 |
| 68BT | A 44 B | 11 / 25 |
| 68BT | A 44 B | 17 / 00 |
| 68BT | A 44 B | 21 / 00 |
| 68CD - 68CT | A 43 C | 11 / 00 |
| 68CD - 68CT | A 44 B | 1 / 04 |
| 68CD - 68CT | A 44 B | 11 / 25 |
| 68CD - 68CT | A 44 B | 17 / 00 |
| 68CD - 68CT | A 44 B | 21 / 00 |
| 68FP | A 43 C | 11 / 00 |
| 68FP | A 44 B | 1 / 04 |
| 68FP | A 44 B | 11 / 25 |
| 68FP | A 44 B | 17 / 00 |
| 68FP | A 44 B | 21 / 00 |
| 68PP | A 43 C | 11 / 00 |
| 68PP | A 44 B | 1 / 04 |
| 68PP | A 44 B | 11 / 25 |
| 68PP | A 44 B | 17 / 00 |
| 68PP | A 44 B | 21 / 00 |
| 68SB - 68SK | A 43 C | 11 / 00 |
| 68SB - 68SK | A 44 B | 1 / 04 |
| 68SB - 68SK | A 44 B | 11 / 25 |
| 68SB - 68SK | A 44 B | 17 / 00 |
| 68SB - 68SK | A 44 B | 21 / 00 |
| 68TT | A 43 C | 11 / 00 |
| 68TT | A 44 B | 1 / 04 |
| 68TT | A 44 B | 11 / 25 |
| 68TT | A 44 B | 17 / 00 |
| 68TT | A 44 B | 21 / 00 |
| 69J - 69R | A 43 C | 11 / 00 |
| 69J - 69R | A 44 B | 1 / 04 |
| 69J - 69R | A 44 B | 11 / 25 |
| 69J - 69R | A 44 B | 17 / 00 |
| 69J - 69R | A 44 B | 21 / 00 |
| 69T | A 43 C | 11 / 00 |
| 69T | A 44 B | 1 / 04 |
| 69T | A 44 B | 11 / 25 |
| 69T | A 44 B | 17 / 00 |
| 69T | A 44 B | 21 / 00 |
| 69AT - 69FP | A 43 C | 11 / 00 |
| 69AT - 69FP | A 44 B | 1 / 04 |
| 69AT - 69FP | A 44 B | 11 / 25 |
| 69AT - 69FP | A 44 B | 17 / 00 |
| 69AT - 69FP | A 44 B | 21 / 00 |
| 69SB - 69ST | A 43 C | 11 / 00 |
| 69SB - 69ST | A 44 B | 1 / 04 |
| 69SB - 69ST | A 44 B | 11 / 25 |
| 69SB - 69ST | A 44 B | 17 / 00 |
| 69SB - 69ST | A 44 B | 21 / 00 |
| 69TM - 69WT | A 43 C | 11 / 00 |
| 69TM - 69WT | A 44 B | 1 / 04 |
| 69TM - 69WT | A 44 B | 11 / 25 |
| 69TM - 69WT | A 44 B | 17 / 00 |
| 69TM - 69WT | A 44 B | 21 / 00 |
| 70J - 70R | A 43 C | 11 / 00 |
| 70J - 70R | A 44 B | 1 / 04 |
| 70J - 70R | A 44 B | 11 / 25 |
| 70J - 70R | A 44 B | 17 / 00 |
| 70J - 70R | A 44 B | 21 / 00 |
| 70T | A 43 C | 11 / 00 |
| 70T | A 44 B | 1 / 04 |
| 70T | A 44 B | 11 / 25 |
| 70T | A 44 B | 17 / 00 |
| 70T | A 44 B | 21 / 00 |
| 70CT | A 43 C | 11 / 00 |
| 70CT | A 44 B | 1 / 04 |
| 70CT | A 44 B | 11 / 25 |
| 70CT | A 44 B | 17 / 00 |
| 70CT | A 44 B | 21 / 00 |
| 70SK - 70ST | A 43 C | 11 / 00 |
| 70SK - 70ST | A 44 B | 1 / 04 |
| 70SK - 70ST | A 44 B | 11 / 25 |
| 70SK - 70ST | A 44 B | 17 / 00 |
| 70SK - 70ST | A 44 B | 21 / 0 |