US Patent Class 162
PAPER MAKING AND FIBER LIBERATION-- Main Headings
 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
| CLASS NOTES | ||
| 1 | DF | PROCESSES OF CHEMICAL LIBERATION, RECOVERY OR PURIFICATION OF NATURAL CELLULOSE OR FIBROUS MATERIAL {33} |
| 100 | DF | PROCESSES AND PRODUCTS {31} |
| 232 | DF | APPARATUS {22} |
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| CROSS-REFERENCE ART COLLECTIONS | ||
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| 900 | DF | PAPERMAKING PRESS FELTS |
| 901 | DF | IMPERMEABLE BELTS FOR EXTENDED NIP PRESS |
| 902 | DF | WOVEN FABRIC FOR PAPERMAKING DRIER SECTION |
| 903 | DF | PAPER FORMING MEMBER (E.G., FOURDRINIER, SHEET FORMING MEMBER, ETC.) |
| 904 | DF | WITH SPECIFIED SEAM STRUCTURE OF PAPERMAKING BELT |
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| DIGESTS | ||
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| DIG 2 | DF | Chip soaking |
| DIG 3 | DF | Wetting agent |
| DIG 4 | DF | Pitch control |
| DIG 5 | DF | Alpha cellulose |
| DIG 6 | DF | Moisture and basic weight |
| DIG 7 | DF | Water collectors (e.g., save-alls) |
| DIG 8 | DF | Chlorine-containing liquid regeneration |
| DIG 9 | DF | Uses for paper making sludge {1} |
| DIG 12 | DF | Seasoning |