| Patents for D21C 5 - Other processes for obtaining cellulose, e.g. cooking cotton linters (5,432) |
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| 06/30/1992 | CA2058541A1 Fibrous component for paper production, paper made therewith and use thereof and method for producing fibrous component and paper |
| 06/29/1992 | CA2058499A1 Deinking agent for the reclamation of waste paste |
| 06/29/1992 | CA2048128A1 Deinking method and deinking composition |
| 06/23/1992 | US5123962 Finely divided suspension of cellulosic material |
| 06/16/1992 | US5122228 Cooking in a digester with saturated steam; reduction of chemicals to de-ink |
| 06/12/1992 | CA2031947A1 Process and apparatus for the manufacture of pulp for paper, board, fiberboard and similar products |
| 06/11/1992 | WO1992010606A1 Method of treatment of waste paper or the like |
| 06/11/1992 | WO1992009741A1 Method for bleaching pulp |
| 06/10/1992 | EP0489104A1 Process for treatment of lignocellulosic pulp. |
| 06/09/1992 | US5120397 Deinking agent |
| 06/03/1992 | EP0488486A1 Method of producing pulp |
| 06/03/1992 | EP0488306A1 Deinking agent for the reclamation of waste paper |
| 06/03/1992 | EP0487557A1 Improvement of oxygen bleaching of pulp. |
| 05/31/1992 | CA2056547A1 Deinking agent for reclaiming waste paper |
| 05/30/1992 | CA2056477A1 Deinking agent for the reclamation of waste paper |
| 05/29/1992 | WO1992008842A2 Method for producing dietary fibers from nonwoody lignocellulosic substrates by oxidation |
| 05/27/1992 | EP0486904A1 Method and installation for waste paper processing |
| 05/27/1992 | EP0486631A1 A method and a device for separating plastic particles from suspensions |
| 05/27/1992 | EP0229171B1 Novel enzymes for degradation of lignin |
| 05/26/1992 | US5116746 Hydrolysis; genetic engineering |
| 05/26/1992 | US5116474 Cellulase, hemicellulase |
| 05/24/1992 | CA2056051A1 Drum sorter |
| 05/20/1992 | EP0486125A1 Lignocellulolytic composition, process of producing the same and use of the same |
| 05/19/1992 | US5114536 Cleaning fibers of recycled paper |
| 05/15/1992 | CA2052403A1 Method for deinking wastepaper |
| 05/14/1992 | WO1992007998A1 Method for bleaching pulp |
| 05/14/1992 | WO1992007997A1 Deinking agent |
| 05/14/1992 | CA2055316A1 Method of processing paper or pulp |
| 05/13/1992 | EP0485355A1 Foam removal from receiving tanks of gas sparged hydrocyclones |
| 05/09/1992 | CA2046195A1 Foam removal from receiving tanks of gas sparged hydrocyclones |
| 05/06/1992 | EP0483571A1 Process for the recycling of fibers by flotation-deinking of waste paper |
| 05/05/1992 | US5110412 Method of manufacture of paper or cardboard using recycled fibers treated with enzymes |
| 04/30/1992 | WO1992007995A1 Treatment of absorbent sanitary paper products |
| 04/30/1992 | WO1992007137A1 Method of pulping waste pressure-sensitive adhesive paper |
| 04/29/1992 | EP0482583A2 Deinking agent for regeneration of waste paper |
| 04/29/1992 | EP0482045A1 Process for processing waste paper. |
| 04/28/1992 | US5108586 Flotation machine for deinking |
| 04/27/1992 | WO1992008001A1 Process for recovering raw materials from paper-industry mechanical waste sludges |
| 04/27/1992 | CA2094809A1 Process for recovering raw materials from paper-industry mechanical waste sludges |
| 04/25/1992 | WO1992007996A1 Deinking agent |
| 04/25/1992 | CA2047183A1 Deinking agent |
| 04/22/1992 | EP0481746A1 Recovery of surfactant from papermaking process |
| 04/18/1992 | WO1992007138A1 Hydrolysis of resin in pulp |
| 04/18/1992 | CA2094296A1 Hydrolysis of resin in pulp |
| 04/16/1992 | DE4032050A1 Verwendung von polyetherkettenhaltigen verbindungen, hergestellt aus epoxidierten carbonsaeurederivaten, zur entfernung von druckfarben aus altpapieren und/oder papierkreislaufwaessern Use of compounds containing polyether chains prepared from epoxidized carbonsaeurederivaten, wastepaper for removal of printing inks and / or papierkreislaufwaessern |
| 04/15/1992 | EP0480476A1 Method for removing polychlorinated dibenzodioxins and polychlorinated dibenzofurans and stickies from secondary fibers |
| 04/13/1992 | CA2044323A1 Method for removing polychlorinated dibenzodioxins and polychlorinated dibenzofurans and stickies from secondary fibers |
| 04/10/1992 | WO1992006240A1 Use of polyether-chain-containing compounds produced from epoxidised carboxylic acid derivatives for removing printing inks from waste paper and/or paper circuit water |
| 04/10/1992 | CA2093813A1 Use of compounds containing polyether chains prepared from epoxidized carboxylic acid derivatives for the removal of printing inks from wastepaper and/or paper circuit waters |
| 04/07/1992 | US5102500 Method for deinking wastepaper using alkoxy capped polyethylene oxide and a polymeric material |
| 04/02/1992 | WO1992005309A1 Process for producing chemical pulp |
| 04/02/1992 | CA2068642A1 Process for the preparation of chemical pulp |
| 04/01/1992 | EP0478505A2 De-inking process |
| 04/01/1992 | EP0478016A2 Device for removing wire from bales, especially bales of waste paper |
| 04/01/1992 | EP0228396B2 Arrangement for the flocculation of flocculable substances, particularly for the purification of effluents from deinking installations for used paper processing |
| 03/31/1992 | US5100574 Deinking agent |
| 03/31/1992 | US5100066 Method for processing domestic, industrial and other similar waste with the production of a cellulose material |
| 03/27/1992 | CA2052116A1 De-inking process |
| 03/25/1992 | EP0477162A1 Flotation column de-inking of paper during recycling |
| 03/12/1992 | CA2050986A1 Chlorine-free process for bleaching pulp |
| 03/10/1992 | US5094716 Use of anionic surfactant/dispersant blends for the deinking of groundwood newsprint |
| 03/10/1992 | US5094715 Arrangement for removing thread-like impurities from a defiberizing drum |
| 03/10/1992 | US5094674 Device for separation of air from flotation slush |
| 03/05/1992 | WO1992004501A1 Method for controlling stickies in pulp and papermaking processes using recycled paper |
| 03/05/1992 | WO1992003541A1 A process for hydrolyzing hemicellulose by enzymes produced by trichoderma reesei |
| 03/05/1992 | WO1992003540A1 Enzymes with xylanolytic activity |
| 03/05/1992 | CA2090337A1 Enzymes with xylanolytic activity |
| 03/05/1992 | CA2089548A1 Method for controlling stickies in pulp and papermaking processes using recycled paper |
| 03/04/1992 | EP0473545A2 Thermostable endoxylanases |
| 03/01/1992 | CA2044185A1 Flotation column deinking of paper during recycling |
| 02/25/1992 | WO1992003608A1 Process for treatment of lignocellulosic pulp and apparatus for performance of the process |
| 02/25/1992 | CA2090338A1 Process for treatment of lignocellulosic pulp and apparatus for performance of the process |
| 02/23/1992 | CA2049540A1 Thermostable endoxylanases |
| 02/12/1992 | EP0470946A1 Hydrocyclone deinking and removal of sticky contaminants during paper recycling |
| 02/12/1992 | EP0470929A2 New fungi for pitch reduction, their preparation and use |
| 02/10/1992 | CA2044383A1 Hydrocyclone deinking and removal of sticky contaminants during paper recycling |
| 02/09/1992 | WO1992002148A1 Process for bleaching/sanitizing food fiber |
| 02/01/1992 | CA2047900A1 Fungi for pitch reduction, their preparation and use |
| 01/29/1992 | EP0468464A2 Cellulase, method for producing the same and use thereof |
| 01/25/1992 | CA2047613A1 Cellulase, method for producing the same and use thereof |
| 01/23/1992 | WO1992001109A1 Process for de-inking printed papers |
| 01/15/1992 | EP0466615A1 Process for deinking printed paper |
| 01/14/1992 | US5081027 Method for producing pulp by treatment using a microorganism, and its related enzymes |
| 01/14/1992 | US5080759 Method for controlling stickies in pulp and papermaking processes using recycled paper |
| 01/09/1992 | DE4021275A1 Verfahren zum deinking von bedruckten papieren A method for deinking of printed papers |
| 01/08/1992 | EP0465312A1 Screening apparatus for a mixture of paper pulp and contaminants |
| 01/08/1992 | EP0465000A1 Composition for treating coated broke and its use |
| 01/08/1992 | EP0464221A1 Process for producing pulp |
| 01/08/1992 | EP0464059A1 Method of de-inking waste paper materials. |
| 12/24/1991 | US5074959 Hydrophilic, high strength |
| 12/24/1991 | US5074958 Method for removing polychlorinated dibenzodioxins and polychlorinated dibenzofurans and stickies from secondary fibers using supercritical propane solvent extraction |
| 12/17/1991 | US5073234 Composition and method of deinking of recycled cellulosic material |
| 12/12/1991 | WO1991018978A1 β-XYLANASE PREPARATION, PROCESS FOR THE PREPARATION THEREOF AND ITS USE IN PULP BLEACHING |
| 12/11/1991 | CN1056910A Technique of seperating main contents from cigarette end with filter tip |
| 12/10/1991 | US5071765 Application of multiple enzyme blend to control industrial slime on equipment surfaces |
| 12/05/1991 | DE4017522A1 New cellulase-free xylanase enzyme - produced by culturing thermomyces lanuginosus on lignocellulose |
| 12/03/1991 | US5069919 Process for bleaching/sanitizing food fiber |
| 12/03/1991 | US5069816 Zirconium silica hydrogel compositions and methods of preparation |
| 11/28/1991 | WO1991018090A1 Novel enzyme preparations and methods for their production |
| 11/27/1991 | EP0457865A1 Method for bleaching with reduced organic chlorides |