| IPC 7 English version |
| C14C-C14C01500 |
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| SECTION C – CHEMISTRY; METALLURGY |
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| C 14 | SKINS; HIDES; PELTS; LEATHER |
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| C 14 C | CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING (dyeing or bleaching of leather or furs D06) |
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| Note |
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| Processes using enzymes or micro-organisms in order to: |
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| (i) | liberate, separate or purify a pre-existing compound or composition, or to |
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| (ii) | treat textiles or clean solid surfaces of materials |
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| are further classified in subclass C12S. [5] |
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| Subclass Index |
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| PRETREATMENT |
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| TANNING; PASTING; IMPREGNATING |
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| DEGREASING |
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| FINISHING; SPECIAL LEATHERS |
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| APPARATUS |
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1/ | 00 | Chemical treatment prior to tanning |
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1/ | 02 | . | Curing raw hides |
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1/ | 04 | . | Soaking |
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1/ | 06 | . | Facilitating unhairing, e.g. by painting, by liming |
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1/ | 08 | . | Deliming; Bating; Pickling; Degreasing |
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3/ | 00 | Tanning; Compositions for tanning |
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3/ | 02 | . | Chemical tanning |
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3/ | 04 | . | . | Mineral tanning |
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3/ | 06 | . | . | . | using chromium compounds |
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3/ | 08 | . | . | by organic agents |
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3/ | 10 | . | . | . | Vegetable tanning |
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3/ | 12 | . | . | . | . | using purified or modified vegetable tanning agents |
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3/ | 14 | . | . | . | Fat tanning; Oil tanning |
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3/ | 16 | . | . | . | using aliphatic aldehydes |
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3/ | 18 | . | . | . | using polycondensation products or precursors thereof |
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3/ | 20 | . | . | . | . | sulfonated |
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3/ | 22 | . | . | . | using polymerisation products |
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3/ | 24 | . | . | . | using lignin derivatives, e.g. sulfate liquor |
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3/ | 26 | . | . | . | using other organic substances, containing halogen |
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3/ | 28 | . | . | Multi-step processes |
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3/ | 30 | . | . | using physical means combined with chemical means |
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3/ | 32 | . | Recovering tanning agents from leather |
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5/ | 00 | Degreasing leather |
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7/ | 00 | Pasting processes (chemical part) |
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9/ | 00 | Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes |
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9/ | 02 | . | using fatty or oily materials, e.g. fat liquoring |
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9/ | 04 | . | Fixing tanning agents in the leather |
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11/ | 00 | Surface finishing of leather |
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13/ | 00 | Manufacture of special kinds of leather, e.g. vellum (chamois tanning C14C 3/14) |
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13/ | 02 | . | Manufacture of technical leather |
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15/ | 00 | Apparatus for chemical treatment or washing of hides, skins, or leather |
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