| Patents for D21C 5 - Other processes for obtaining cellulose, e.g. cooking cotton linters (5,432) |
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| 10/09/1979 | US4170515 Process for bleaching peat moss and resulting product |
| 09/18/1979 | US4168199 Recovery of cellulosic fibres from foil laminated materials |
| 08/07/1979 | CA1059926A1 Purification of papermarking waste water using pulp stock rejects as filter aid |
| 07/31/1979 | CA1059359A1 Treatment of waste paper and similar materials |
| 07/24/1979 | US4162186 Alkaline surfactant system for de-inking printed fibrous material |
| 06/19/1979 | CA1056558A1 Strenghtening of mechanical pulp by chemical treatment |
| 06/12/1979 | US4157952 Apparatus for deinking waste paper pulp |
| 05/30/1979 | EP0002070A1 Oil absorbent cellulosic material, especially material derived from bagasse, and methods of preparation and use thereof |
| 04/03/1979 | US4147616 Apparatus for deinking printed wastepapers |
| 11/28/1978 | US4127440 Process for purifying waste water obtained by a papermaking process |
| 08/15/1978 | CA1036304A1 Process for producing paper-making pulps from grasses |
| 08/01/1978 | US4104463 Alkaline hydrolysis |
| 06/06/1978 | US4093507 Multicycle compression with rotating paddle wheel |
| 05/02/1978 | US4087316 Using alkaline solution and oxygen containing gas |
| 02/28/1978 | US4076578 Ink removal from waste paper |
| 09/27/1977 | US4050917 Or into fertilizers or soil improving agents |
| 09/13/1977 | US4048007 Method of removing solvent residues from aqueous paper pulps |
| 08/23/1977 | US4043908 Process for cleaning of a dispersion of dispersed particles |
| 07/26/1977 | US4038481 Method for treatment of corn hulls |
| 03/22/1977 | US4013505 Method of deinking printed wastepapers |
| 02/01/1977 | US4006006 Anticaking, magnesium and calcium ammonium phosphate |
| 11/30/1976 | US3994770 Shredding, digestion, flotation |
| 10/19/1976 | US3986922 Method of deinking printed waste cellulosic stock |
| 07/20/1976 | US3970712 Hydrolysis of oat husks |
| 07/06/1976 | US3968310 Half-ester reaction products of maleated alpha-olefins and monohydric alcohols |
| 06/15/1976 | US3963560 N-alkyllactam |
| 06/08/1976 | US3962033 Method for producing cellulose pulp |
| 05/18/1976 | US3957572 Process for the manufacture of paper pulp from waste paper |
| 05/04/1976 | US3954497 Hydrolysis of deciduous wood |
| 01/20/1976 | US3933578 Alkaline solution containing a surfactant |
| 01/20/1976 | US3933577 Process of sonically treating municipal waste to produce high quality paper pulp and fertilizer |
| 01/13/1976 | US3932206 Process for de-inking printed waste cellulosic fibrous material |