Class 521 SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES
| Printable Version[PDF] See notes regarding proper use of US-to-IPC Concordances. | ||
| U.S. Subclass | IPC8 Subclass | IPC8 Group |
|---|---|---|
| 25 - 29 | B 01 J | 49 / 00 |
| 25 - 29 | C 08 J | 5 / 20 |
| 30 | B 01 J | 41 / 12 |
| 30 | B 01 J | 49 / 00 |
| 31 | B 01 J | 39 / 20 |
| 31 | B 01 J | 49 / 00 |
| 32 | B 01 J | 41 / 14 |
| 32 | B 01 J | 49 / 00 |
| 33 | B 01 J | 39 / 20 |
| 33 | B 01 J | 49 / 00 |
| 34 - 36 | B 01 J | 41 / 12 |
| 34 - 36 | B 01 J | 49 / 00 |
| 37 | B 01 J | 39 / 18 |
| 37 | B 01 J | 49 / 00 |
| 38 | B 01 J | 39 / 20 |
| 38 | B 01 J | 49 / 00 |
| 39 | B 01 J | 41 / 12 |
| 39 | B 01 J | 49 / 00 |
| 40 - 45 | C 08 J | 11 / 04 |
| 45.5 | B 29 B | 17 / 00 |
| 45.5 | C 08 J | 11 / 04 |
| 46 - 49.8 | C 08 J | 11 / 04 |
| 50 - 50.5 | C 08 J | 9 / 00 |
| 51 | C 08 J | 9 / 34 |
| 52 | C 08 J | 9 / 38 |
| 53 | C 08 J | 9 / 36 |
| 54 | C 08 J | 9 / 32 |
| 55 | C 04 B | 28 / 02 |
| 56 | C 08 J | 9 / 16 |
| 57 - 58 | C 08 J | 9 / 22 |
| 59 | C 08 J | 9 / 16 |
| 60 | C 08 J | 9 / 18 |
| 61 | C 08 J | 9 / 26 |
| 62 - 63 | C 08 J | 9 / 26 |
| 62 - 63 | C 08 J | 9 / 28 |
| 64 | C 08 J | 9 / 28 |
| 65 - 72 | C 08 J | 9 / 28 |
| 65 - 72 | C 08 J | 9 / 30 |
| 73 - 75 | C 08 J | 9 / 30 |
| 76 | C 08 J | 9 / 00 |
| 76 | C 08 J | 9 / 32 |
| 77 - 81 | C 08 J | 9 / 00 |
| 82 | C 08 J | 9 / 00 |
| 82 | C 08 J | 9 / 12 |
| 83 | C 04 B | 28 / 14 |
| 83 | C 08 J | 9 / 00 |
| 84.1 | C 08 J | 9 / 00 |
| 85 - 86 | C 08 J | 9 / 00 |
| 87 | C 08 J | 9 / 00 |
| 87 | C 08 J | 9 / 10 |
| 88 | C 08 J | 9 / 00 |
| 89 - 90 | C 08 J | 9 / 00 |
| 89 - 90 | C 08 J | 9 / 10 |
| 91 | C 08 J | 9 / 00 |
| 92 - 93 | C 08 J | 9 / 00 |
| 92 - 93 | C 08 J | 9 / 10 |
| 94 | C 08 G | 18 / 38 |
| 94 | C 08 J | 9 / 00 |
| 95 | C 08 J | 9 / 00 |
| 95 | C 08 J | 9 / 10 |
| 96 | A 63 B | 37 / 02 |
| 96 | C 08 J | 9 / 00 |
| 97 | C 08 J | 9 / 00 |
| 97 | C 08 J | 9 / 12 |
| 98 | C 08 J | 9 / 00 |
| 98 | C 08 J | 9 / 14 |
| 99 | C 08 G | 18 / 48 |
| 99 | C 08 J | 9 / 00 |
| 100 | C 08 G | 18 / 64 |
| 100 | C 08 J | 9 / 00 |
| 101 | C 07 F | 9 / 6571 |
| 101 | C 08 J | 9 / 00 |
| 102 | C 08 G | 18 / 64 |
| 102 | C 08 J | 9 / 00 |
| 103 | C 08 G | 18 / 18 |
| 103 | C 08 J | 9 / 00 |
| 104 | C 08 G | 18 / 00 |
| 104 | C 08 J | 9 / 00 |
| 105 | C 08 G | 18 / 38 |
| 105 | C 08 J | 9 / 00 |
| 106 | C 08 G | 18 / 16 |
| 106 | C 08 J | 9 / 00 |
| 107 | C 08 G | 18 / 38 |
| 107 | C 08 J | 9 / 00 |
| 108 | C 08 G | 18 / 16 |
| 108 | C 08 J | 9 / 00 |
| 109.1 | C 08 G | 18 / 48 |
| 110 | C 08 G | 18 / 48 |
| 110 | C 08 J | 9 / 00 |
| 111 - 112 | C 08 G | 77 / 46 |
| 111 - 112 | C 08 J | 9 / 00 |
| 113 | C 08 F | 299 / 04 |
| 113 | C 08 J | 9 / 00 |
| 114 | C 08 G | 18 / 28 |
| 114 | C 08 J | 9 / 00 |
| 115 | C 08 G | 18 / 18 |
| 115 | C 08 J | 9 / 00 |
| 116 - 117 | C 08 G | 18 / 28 |
| 116 - 117 | C 08 J | 9 / 00 |
| 118 | C 08 G | 18 / 18 |
| 118 | C 08 J | 9 / 00 |
| 119 | C 08 G | 18 / 22 |
| 119 | C 08 J | 9 / 00 |
| 120 | C 08 G | 18 / 48 |
| 120 | C 08 J | 9 / 00 |
| 121 | C 08 G | 18 / 24 |
| 121 | C 08 J | 9 / 00 |
| 122 - 123 | C 08 G | 18 / 08 |
| 122 - 123 | C 08 J | 9 / 00 |
| 124 - 125 | C 08 G | 18 / 22 |
| 124 - 125 | C 08 J | 9 / 00 |
| 126 | C 08 G | 18 / 24 |
| 126 | C 08 J | 9 / 00 |
| 127 | C 08 G | 18 / 48 |
| 127 | C 08 J | 9 / 00 |
| 128 | C 08 G | 18 / 38 |
| 128 | C 08 J | 9 / 00 |
| 129 | C 08 G | 18 / 18 |
| 129 | C 08 J | 9 / 00 |
| 130 - 131 | C 08 G | 18 / 48 |
| 130 - 131 | C 08 J | 9 / 00 |
| 132 | C 08 J | 9 / 00 |
| 133 | B 29 B | 7 / 76 |
| 133 | C 08 J | 9 / 00 |
| 134 | C 08 J | 9 / 00 |
| 135 | C 08 L | 63 / 00 |
| 136 | C 08 L | 61 / 00 |
| 137 | C 08 L | 75 / 00 |
| 138 | C 08 L | 67 / 00 |
| 138 | C 08 L | 77 / 00 |
| 139 | B 22 C | 1 / 22 |
| 140 | C 08 L | 47 / 00 |
| 141 | C 08 F | 16 / 06 |
| 141 | C 08 F | 116 / 06 |
| 141 | C 08 F | 216 / 06 |
| 142 | B 29 C | 44 / 34 |
| 143 | C 08 F | 110 / 00 |
| 144 | C 08 F | 210 / 00 |
| 145 - 146 | C 08 F | 14 / 00 |
| 145 - 146 | C 08 F | 114 / 00 |
| 145 - 146 | C 08 F | 214 / 00 |
| 147 | C 07 K | 1 / 04 |
| 148 | C 08 F | 36 / 04 |
| 148 | C 08 F | 136 / 04 |
| 148 | C 08 F | 236 / 04 |
| 149 | A 61 F | 13 / 15 |
| 150 | C 08 F | 36 / 00 |
| 151 | C 08 G | 83 / 00 |
| 151 | C 08 L | 95 / 00 |
| 152 | C 08 G | 77 / 56 |
| 152 | C 08 G | 79 / 08 |
| 153 | C 08 G | 79 / 00 |
| 154 | C 08 G | 77 / 00 |
| 155 - 177 | C 08 G | 18 / 00 |
| 178 | C 08 G | 59 / 00 |
| 179 | C 08 G | 59 / 42 |
| 180 | C 08 G | 63 / 00 |
| 180 | C 08 G | 65 / 38 |
| 181 | C 08 G | 8 / 00 |
| 181 | C 08 G | 14 / 04 |
| 182 | C 08 G | 63 / 00 |
| 183 - 185 | C 08 G | 63 / 44 |
| 183 - 185 | C 08 G | 69 / 44 |
| 183 - 185 | C 08 G | 73 / 10 |
| 186 | C 08 G | 4 / 00 |
| 186 | C 08 G | 6 / 00 |
| 186 | C 08 G | 10 / 00 |
| 186 | C 08 G | 12 / 00 |
| 186 | C 08 G | 14 / 00 |
| 186 | C 08 G | 16 / 00 |
| 186 | C 08 G | 65 / 00 |
| 187 | C 08 G | 12 / 00 |
| 188 | C 08 G | 12 / 12 |
| 189 | C 08 G | 73 / 10 |