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國際專利分類查詢
| C | 化學；冶金；組合化學 |
|---|---|
| C13 | 糖工業（多糖，如澱粉，及其衍生物見C08D；麥芽見C12C）[4] |
| C13D | 糖汁之生產或淨化 |
| C13D 1/00 | (轉見C13B10/00) |
| C13D 1/02 | (轉見C13B10/02) |
| C13D 1/04 | (轉見C13B10/04) |
| C13D 1/06 | (轉見C13B10/06) |
| C13D 1/08 | (轉見C13B10/08) |
| C13D 1/10 | (轉見C13B10/10) |
| C13D 1/12 | (轉見C13B10/12) |
| C13D 1/14 | (轉見C13B10/14) |
| C13D 3/00 | (轉見C13B20/00) |
| C13D 3/02 | (轉見C13B20/02) |
| C13D 3/04 | (轉見C13B20/04) |
| C13D 3/06 | (轉見C13B20/06) |
| C13D 3/08 | (轉見C13B20/08) |
| C13D 3/10 | (轉見C13B20/10) |
| C13D 3/12 | (轉見C13B20/12) |
| C13D 3/14 | (轉見C13B20/14) |
| C13D 3/16 | (轉見C13B20/16) |
| C13D 3/18 | (轉見C13B20/18) |