| Patents for D21H 13 - Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material (4,906) | |
|---|---|
| 06/1976 | |
| 06/01/1976 | US3961123 Sulfonated novolaks containing metal atoms |
| 05/1976 | |
| 05/18/1976 | US3957573 Polypropylene fibers |
| 04/1976 | |
| 04/20/1976 | US3952130 Mineral wool paper |
| 02/1976 | |
| 02/03/1976 | US3936347 Paper composed mainly of pullulan fibers and method for producing the same |
| 02/03/1976 | US3935924 Vibratory material of paper pulp and carbon fibers |
| 01/1976 | |
| 01/13/1976 | US3932210 Paper, non-woven fabrics |