| IPC 7 English version |
| D01C-D01C00500 |
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| SECTION D – TEXTILES; PAPER |
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| D 01 | NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING (metal threads B21; fibres or filaments of softened glass, minerals, or slag C03B 37/00; yarns D02) |
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| D 01 C | CHEMICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES |
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| Notes |
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| (1) | Attention is drawn to the Note following the title of class D01. |
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| (2) | 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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1/ | 00 | Treatment of vegetable material |
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1/ | 02 | . | by chemical methods to obtain bast fibres |
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1/ | 04 | . | Bacteriological retting |
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3/ | 00 | Treatment of animal material, e.g. chemical scouring of wool (recovery of lanolin or wool wax C11B 11/00) |
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3/ | 02 | . | De-gumming silk |
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5/ | 00 | Carbonising rags to recover animal fibres (chemical removal of vegetable impurities from threads or fabrics of animal fibres D06M) |
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