| Patents for D21C 5 - Other processes for obtaining cellulose, e.g. cooking cotton linters (5,432) |
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| 05/29/1997 | CA2238378A1 A soft, bulky absorbent paper containing chemithermomechanical pulp |
| 05/28/1997 | EP0775165A1 Dadmac/vinyl trialkoxysilane copolymers and their use in wastewater treatment |
| 05/27/1997 | US5632857 Process for removing waterborne flexographic inks from substrates |
| 05/22/1997 | WO1997018348A1 Process for enhancing ash removal in deinking process |
| 05/13/1997 | US5629199 Sonically enhanced method for removing chemical preservatives from chemically treated wood products |
| 05/07/1997 | CN1149262A Process and apparatus for recycling disposable diapers |
| 05/07/1997 | CN1034823C Paper, paper plate and cellulose plate pulping method |
| 05/06/1997 | US5626945 Repulpable, water repellant paperboard |
| 05/06/1997 | US5626718 Use of polymers in the recycled fiber washing/deinking process |
| 05/01/1997 | WO1997015711A2 Production of soft paper products from high and low coarseness fibers |
| 05/01/1997 | CA2232364A1 Production of soft paper products from high and low coarseness fibers |
| 04/29/1997 | US5624609 Enhancements to the air injection devices in a paper pulp flow for de-inking thereof |
| 04/24/1997 | WO1997014844A1 Novel surfactant compositions and the use thereof in paper deinking |
| 04/24/1997 | CA2207328A1 Novel surfactant compositions and the use thereof in paper deinking |
| 04/23/1997 | EP0717799A4 Process and apparatus for manufacturing absorbent granular material |
| 04/23/1997 | EP0573536B1 Xylanase, xylanase-producing bacillus and applications thereof |
| 04/22/1997 | US5622600 Remocal of fibers from ejection stream of papermaking liquids |
| 04/22/1997 | US5622597 Preparing pulp slurry containing a imidazolinium cation surfactant in a pressurized module |
| 04/17/1997 | WO1997013917A1 Office wastepaper deinking process |
| 04/16/1997 | EP0767849A1 Production of soft paper products from old newspaper |
| 04/16/1997 | EP0767836A1 Purified polyporus laccases and nucleic acids encoding same |
| 04/16/1997 | EP0644966B1 Bleaching recycled pulp with a reductive-oxidative sequence |
| 04/15/1997 | US5620565 Adding surfactant and enzymes to pulp slurry prior to dewatering, crumbing and mixing fibers with oil; waste paper recycling |
| 04/15/1997 | US5620564 Cutting wood into chip; inoculating with ceriporiopsis and nutrients |
| 04/10/1997 | WO1997013025A1 Method for improving the efficiency of chemical pulping processes by pretreating wood or pulpwood with white rot fungi |
| 04/10/1997 | DE19537134A1 Prodn. of cellulose pulp |
| 04/10/1997 | CA2233046A1 Method for improving the efficiency of chemical pulping processes by pre-treatment with white rot fungi |
| 04/09/1997 | CN1147271A Use of thermostable enzyme as feed additive |
| 04/08/1997 | US5618482 Method of producing fibreboard |
| 04/08/1997 | US5618386 Using enzyme prepared by culturing streptomyces viridosporus bacterium |
| 04/02/1997 | EP0765394A1 Purified myceliophthora laccases and nucleic acids encoding same |
| 04/01/1997 | US5616215 Hydrolysis of esters from pitch (contained in wood pulp) by lipase in presence of aluminum salt |
| 03/26/1997 | EP0764226A1 Method and enzymatic preparation for treatment of cellulose pulps |
| 03/26/1997 | EP0585217B1 Preparation exhibiting enzymatic delignification activity, a method of producing the same, and applications thereof |
| 03/26/1997 | CN1145900A Continuous extraction process of carotene, pectin and edible cellulose |
| 03/20/1997 | WO1997010352A1 Processing of cellulosic materials by cellulase producing bacteria |
| 03/12/1997 | EP0761870A1 Process for the treatment of dry broke from a paper or board coating machine |
| 03/12/1997 | EP0761464A1 Thermal transfer of dye mixtures comprising azamethine dyes |
| 03/12/1997 | EP0719358B1 Device for controlling a deinked cellulose production plant with state analysers constituted of neural networks for the waste paper suspension |
| 03/12/1997 | EP0698141B1 Method of monitoring the deposition of "stickies" from paper-pulp suspensions |
| 03/12/1997 | EP0652990B1 Method of processing recycled paper |
| 03/11/1997 | US5610048 Xylanase, DNA sequences, coding for the xylanases and methods of use thereof |
| 03/11/1997 | US5610046 Cloning and expression of xylanase B |
| 03/11/1997 | US5609724 Fungi for pitch reduction and their preparation |
| 03/11/1997 | US5609722 Deinking wastepaper using reaction products of epoxidized C10 -C22 |
| 03/11/1997 | CA2082557C Integrated pulping process of waste paper yielding tissue-grade paper fibers |
| 03/05/1997 | EP0688377A4 Persulfate mixtures for repulping wet strength paper |
| 03/05/1997 | CN1144538A Alkaling bacillus amylase |
| 03/04/1997 | US5607544 Process and agent for the oxidative bleaching of wood pulp and for deinking waste paper |
| 02/27/1997 | WO1997006668A1 Method for monitoring growth and detection of environmental stress in plants |
| 02/22/1997 | CA2180808A1 Process for removing toners from paper using hydroxamate collectors |
| 02/20/1997 | WO1997006244A1 Method for enhancing the activity of an enzyme, compounds showing enzyme activity enhancement, and detergents containing such compounds |
| 02/19/1997 | EP0758379A1 Use of a thermostable enzyme as a feed additive |
| 02/19/1997 | EP0758378A1 Thermostable xylanases |
| 02/19/1997 | CN1143399A Method of agglomerating printing ink and formulations for use therein |
| 02/19/1997 | CN1143387A Thermostable xylanases |
| 02/13/1997 | WO1997005325A1 Ethoxylated soya glycerides with glycols as deinking collector modifiers |
| 02/13/1997 | WO1997005323A1 Device to promote reuse of office laser-print paper |
| 02/11/1997 | US5601689 Deinking processes |
| 02/06/1997 | WO1997004164A1 Method for the deinking of printed waste paper by a washing process and product produced therefrom |
| 02/06/1997 | WO1997004163A1 Alkoxylated lanolin derivatives as deinking agents |
| 02/05/1997 | CN1142255A Multicomponent system for modifying decomposing or bleaching lignin, lignin-containing materials or similar substances and method of using this system |
| 01/30/1997 | WO1997003248A1 Auxiliary paper-producing aid with recurring succinyl units |
| 01/30/1997 | CA2226954A1 Auxiliary paper-producing aid with recurring succinyl units |
| 01/28/1997 | US5597447 Blade-coated paper having a paper lamina produced from a furnish comprising recycled corrugated containers |
| 01/28/1997 | US5597075 Method and apparatus for screening waste paper pulp |
| 01/23/1997 | WO1996038626A3 Improved duplex linerboard formed from old corrugated containers |
| 01/22/1997 | EP0754257A1 Method of enhancing biopulping efficacy |
| 01/16/1997 | DE19525365A1 Papierhilfsmittel mit wiederkehrenden Succinyleinheiten Paper auxiliaries with recurring succinyl |
| 01/15/1997 | EP0753622A1 Method for separating contaminants from paper fibres and device for carrying out this method |
| 01/15/1997 | EP0753057A1 Alkaline bacillus amylase |
| 01/14/1997 | US5593543 Process for repulping wet strength paper |
| 01/14/1997 | US5593542 Useful for papermaking |
| 01/14/1997 | CA2180817A1 Process for the recovery of paper fibers and contaminants and apparatus for using same |
| 01/14/1997 | CA2068709C Oxygen color stripping in secondary fiber recovery |
| 01/14/1997 | CA2068708C Oxygen detackification in secondary fiber recovery |
| 01/09/1997 | WO1997000948A1 Oxidase, microorganisms producing the same and use of the same |
| 01/08/1997 | EP0751829A1 Process and apparatus for recycling disposable diapers |
| 01/08/1997 | EP0558512B1 Treatment of absorbent sanitary paper products |
| 01/07/1997 | US5591304 Delignifying brownstock with hemicellulases |
| 01/02/1997 | EP0750697A1 Regeneration of pulp liquors |
| 12/31/1996 | US5589030 Method for preparing vanillin from old newsprint |
| 12/27/1996 | EP0749506A1 Method of agglomerating printing ink and formulations for use therein |
| 12/27/1996 | EP0749473A1 Novel alkaline cellulases |
| 12/24/1996 | US5587048 Pulp and paper products produced from recycled, high lignin content, waste paper |
| 12/18/1996 | EP0748836A1 Treatment of super absorbent polymer |
| 12/17/1996 | US5585339 Deinking composition and deinking method |
| 12/12/1996 | WO1996039551A1 Fiber and fiber products produced from feathers |
| 12/11/1996 | EP0747526A2 Dyed particulate or granular materials from recycled paper and process for making the materials |
| 12/10/1996 | US5583097 Deinking agent of nonionic surfactants |
| 12/10/1996 | US5582681 Production of soft paper products from old newspaper |
| 12/08/1996 | CA2176422A1 Dyed particulate or granular materials from recycled paper and process for making the materials |
| 12/05/1996 | WO1996038626A2 Improved duplex linerboard formed from old corrugated containers |
| 12/04/1996 | EP0745159A1 A method of producing fibreboard |
| 12/04/1996 | EP0745154A1 Multicomponent system for modifying, decomposing or bleaching lignin, lignin-containing materials or similar substances and method of using this system |
| 12/04/1996 | CN2241705Y Liquid medicine and fibre separating and recovering apparatus |
| 12/03/1996 | US5580422 Brightening color dyed wastepaper with a bleaching agent and a quaternary compound |
| 12/01/1996 | CA2177648A1 Duplex linerboard formed from old corrugated containers |
| 11/21/1996 | WO1996036765A1 A method for treating wood with bacteria |
| 11/21/1996 | WO1996036764A1 Method for recycling mixed wastepaper using ink agglomeration |