| Patents for D21C 5 - Other processes for obtaining cellulose, e.g. cooking cotton linters (5,432) |
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| 01/07/1999 | CA2210385A1 Use of cationic polyelectrolytes and surfactants in the deinking of wastepaper |
| 01/06/1999 | CN1204375A Production of soft paper products from high and low coarseness fibers |
| 01/05/1999 | US5856164 Dishwashing; cleaning compound |
| 01/05/1999 | US5856163 Lipases from hyphozyma |
| 12/30/1998 | WO1998059108A2 Oxidation and bleaching system with enzymatically produced oxidizing agents |
| 12/30/1998 | EP0799304A4 Bacterial protein with xylanase activity |
| 12/30/1998 | EP0791103A4 Method of papermaking having zero liquid discharge |
| 12/30/1998 | CN1203642A Method and apparatus for continuously preparing cellulose pulp |
| 12/30/1998 | CA2335253A1 Oxidation and bleaching system with enzymatically produced oxidizing agents |
| 12/29/1998 | US5854047 Mannanase enzymes, genes coding for them and a method for isolating the genes, as well as a process for bleaching of lignocellulosic pulp |
| 12/29/1998 | US5853537 Process for treating pulpwoods and pulps with a pitch degrading fungus of the genus Ophiostoma |
| 12/23/1998 | WO1998058119A1 Method and installation for the continuous preparation of paper pulp from lignocellulose textile fibres |
| 12/23/1998 | EP0885326A1 System of chemicals and method for deinking of waste paper |
| 12/23/1998 | EP0885325A1 Magnetic deinking of waste papers |
| 12/23/1998 | CN1202944A Method for improving the efficiency of chemical pluping processes by pretreating wood or pulpwood with white rot fungi |
| 12/23/1998 | CN1202552A Aluminium and paper separating and recovering technology for waste aluminium foil paper leftover |
| 12/23/1998 | CA2296170A1 Method and installation for the continuous preparation of paper pulp from lignocellulose textile fibres |
| 12/22/1998 | US5851351 Method of microbial pre-treating wood chips for paper making |
| 12/22/1998 | US5851349 Magnetic deinking of waste papers |
| 12/17/1998 | WO1998056981A1 Modified cellulosic fibers and fibrous webs containing these fibers |
| 12/17/1998 | WO1998056958A1 Process for the production of xylose from a paper-grade, hardwood pulp |
| 12/17/1998 | WO1998056899A1 Method for enhancing the activity of an enzyme, bleach composition, detergent composition and process for inhibiting dye transfer |
| 12/17/1998 | CA2293698A1 Method for enhancing the activity of an enzyme, bleach composition, detergent composition and process for inhibiting dye transfer |
| 12/15/1998 | US5849197 Regeneration of pulp liquors |
| 12/15/1998 | US5849149 Magnetic deinking of waste papers |
| 12/10/1998 | WO1998055684A1 Multi-component system for modifying, decomposing or bleaching lignin, materials containing lignin or similar substances and methods for producing the same |
| 12/10/1998 | WO1998055683A1 Psa-promoted process for removing contaminants from paper pulp |
| 12/10/1998 | WO1998055489A1 Multi-constituent system for modifying, degrading or bleaching lignin, materials containing lignin or similar substances, and method for using the same |
| 12/10/1998 | DE19723631A1 Mehrkomponentensystem zum Verändern, Abbau oder Bleichen von Lignin, ligninhaltigen Materialien oder ähnlichen Stoffen sowie Verfahren zu seiner Anwendung Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances and to processes for its application, |
| 12/10/1998 | DE19723629A1 Mehrkomponentensystem zum Verändern, Abbau oder Bleichen von Lignin, ligninhaltigen Materialien oder ähnlichen Stoffen sowie Verfahren zu seiner Anwendung Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances and to processes for its application, |
| 12/10/1998 | CA2293481A1 Psa-promoted process for removing contaminants from paper pulp |
| 12/09/1998 | EP0707617B1 Anion-based aqueous printing inks with improved de-inking characteristics |
| 12/09/1998 | CN1041121C Ink-removing agent for waste paper |
| 12/03/1998 | WO1998054403A1 Baffle for reactors used for liquids purification |
| 12/03/1998 | WO1998054402A1 Perfected reactor for liquids purification |
| 12/02/1998 | EP0881326A1 Process for producing bleached special cellulose pulps |
| 12/02/1998 | EP0880614A1 Method for recovering fiber from printed wastepaper |
| 12/02/1998 | EP0720649B1 Novel xylanase, process for producing the same, method for the treatment of pulp, and production of xylo-oligosaccharides |
| 12/01/1998 | US5843764 Method for separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials |
| 12/01/1998 | CA2005087C Method for avoiding pitch troubles |
| 11/28/1998 | CA2206392A1 Process for regulating a paper deinking line and device for continuous measurement of the quantity of particles contained in a liquid |
| 11/25/1998 | EP0879318A1 Process for increasing the charge on a lignocellulosic material, product obtainable by the process, and use of the product in the preparation of a lignocellulose-based product |
| 11/25/1998 | EP0879314A1 Method for recycling mixed wastepaper using ink agglomeration |
| 11/24/1998 | US5841671 Apparatus for the operation of a plant for producing deinked pulp with state analysers constructed in the form of neural networks for the waste paper suspension |
| 11/24/1998 | US5840249 Treating cellulose pulp with thin wax film, filtration, adding potassium sorbate and then citric acid |
| 11/24/1998 | US5840157 Deinking agent and method of deinking through flotation using the deinking agent |
| 11/24/1998 | US5839143 Apparatus for regenerating image support from used image-bearing support |
| 11/19/1998 | DE19820947A1 Enzymatic bleach system containing mediator increasing pulp bleaching or coal liquefaction performance |
| 11/18/1998 | EP0877839A1 Process for the production of cellulose paper pulps by biodelignification of vegetable masses |
| 11/18/1998 | EP0877800A1 Bacterial polyphenol oxidase from bacillus for use in oxidation of colored substances |
| 11/18/1998 | CN1198884A Process for preparation of absorbent materials |
| 11/17/1998 | US5837515 Enzyme preparations and methods for their production |
| 11/17/1998 | US5837383 Recyclable and compostable coated paper stocks and related methods of manufacture |
| 11/17/1998 | US5837099 Pulping; mixing a ethylene oxide fatty alcohol adduct and olefin detergent; flotation |
| 11/17/1998 | US5837098 Method for deinking electrostatic printed wastepaper using a combination of nonionic surfactants |
| 11/17/1998 | US5837097 Using an enzyme and a nonionic surfactant for deinking paper |
| 11/11/1998 | EP0876758A1 Process for the preparation of absorbent materials |
| 11/11/1998 | EP0876535A1 Method for marking paper and apparatus for detected marked paper |
| 11/11/1998 | EP0876534A1 Production of sanitary paper |
| 11/11/1998 | EP0876494A1 Production and secretion of proteins of bacterial origin in filamentous fungi |
| 11/10/1998 | US5834301 Treating pulp with xylanase, extracting chromophores |
| 11/05/1998 | DE19718661A1 De:inking printed waste paper, useful for making paper, card and cardboard |
| 11/04/1998 | EP0874935A1 Process for producing pulp from lignocellulosic plants, and pulp obtained |
| 11/04/1998 | EP0579708B1 Lipase-catalyzed ester hydrolysis |
| 11/03/1998 | US5830382 Containing water soluble catalyst which is a group 1b or 8compound |
| 10/28/1998 | EP0750697A4 Regeneration of pulp liquors |
| 10/28/1998 | EP0641293B1 Dewatering of aqueous suspensions |
| 10/28/1998 | CN1197370A Method for monitoring growth and detection of environmental stress in plants |
| 10/27/1998 | US5827397 Mixed office wastepaper deinking process |
| 10/21/1998 | EP0741817B1 Method and apparatus for treating recycled pulp |
| 10/20/1998 | US5824531 Alkaline bacilus amylase |
| 10/15/1998 | WO1998045535A1 Environmentally friendly processed tropical fiber product and method for making the same |
| 10/15/1998 | WO1998045530A1 Process for removing waterborne flexographic inks from substrates |
| 10/15/1998 | CA2286297A1 Process for removing waterborne flexographic inks from substrates |
| 10/14/1998 | EP0870015A1 Novel xylanases, genes encoding them, and uses thereof |
| 10/08/1998 | WO1998044189A1 Enzyme aided removal of color from wood pulps |
| 10/08/1998 | CA2285244A1 Enzyme aided removal of color from wood pulps |
| 10/07/1998 | EP0869218A1 Magnetic removal of"stickies"from waste papers |
| 10/07/1998 | EP0868561A2 Process for removing inks from waste paper |
| 10/07/1998 | EP0868560A1 Office wastepaper deinking process |
| 10/07/1998 | EP0868506A1 Novel xylanases and uses thereof |
| 10/06/1998 | US5817381 Food packaging |
| 10/06/1998 | US5817212 Deinking composition and process |
| 10/04/1998 | CA2201801A1 Magnetic removal of "stickies" from waste papers |
| 10/01/1998 | WO1998042914A1 Method and apparatus for commercial scale biopulping |
| 09/30/1998 | EP0866808A1 Methods and apparatus for the extraction of phytochemicals from fibrous plants |
| 09/23/1998 | EP0865484A1 Novel xylanase composition and method for production thereof |
| 09/16/1998 | EP0864011A1 Method and apparatus for continuously preparing cellulose pulp |
| 09/16/1998 | EP0832316A4 Fiber and fiber products produced from feathers |
| 09/16/1998 | EP0745154B1 Multicomponent system for modifying, decomposing or bleaching lignin, lignin-containing materials or similar substances and method of using this system |
| 09/15/1998 | US5807465 Absorber from recovered papermaking wastes |
| 09/15/1998 | US5807464 Enzymatic deinking process for office wastepaper with selected noninic surfactants |
| 09/09/1998 | EP0862670A2 A soft, bulky absorbent paper containing chemithermomechanical pulp |
| 09/02/1998 | EP0861347A1 Method of obtaining cellulose fibre material from a plant substrate containing calcium pectinate |
| 09/02/1998 | EP0793748B1 Method of removing printing inks from printed wastepaper |
| 09/01/1998 | US5801135 Deinking composition comprising a fatty acid mixture and a nonionic surfactant |
| 08/26/1998 | EP0811089A4 System and method for recycling materials |
| 08/26/1998 | EP0728240B1 Method of manufacturing a recyclable paper product |
| 08/26/1998 | CN1191228A Method and apparatus for removal of ink and dirt by laser and regeneration of prints |
| 08/25/1998 | US5798046 Enhanced removal of hydrophobic contaminants from water clarification systems |