| Patents for D21C 5 - Other processes for obtaining cellulose, e.g. cooking cotton linters (5,432) |
|---|
| 03/03/1993 | CN1069539A Biobleaching process |
| 02/25/1993 | DE4128084A1 Beta-alanine-N,N-di:acetic acid, alkali or ammonium salt complex former in paper mfr. - useful for biodegradable alkaline earth and heavy metal ion complexant in bleaching mechanical wood pulp and printed waste paper de inking |
| 02/18/1993 | WO1993003155A1 Xylanase for biobleaching |
| 02/18/1993 | WO1993002967A1 Dewatering of aqueous suspensions |
| 02/18/1993 | WO1993002966A1 Dewatering of aqueous suspensions |
| 02/18/1993 | CA2114437A1 Dewatering of aqueous suspensions |
| 02/16/1993 | CA1313600C Paper material refining apparatus |
| 02/09/1993 | CA2048322A1 Xylanase for biobleaching |
| 01/27/1993 | EP0524917A1 A process and system for clarifying wash-up waters |
| 01/27/1993 | EP0524220A1 A pulping process using cellulase. |
| 01/26/1993 | US5182031 Process and device for deaeration of liquids |
| 01/20/1993 | CN1068162A Oxygen detackification in secondary fiber recovery |
| 01/20/1993 | CN1068161A Removing lignin and bleaching for lignin cellulose-containing material and method for treating waste water by synergetic shellac enzyme |
| 01/13/1993 | EP0521999A1 Enzymatic deinking process. |
| 01/12/1993 | US5179021 Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment |
| 01/07/1993 | DE4122184A1 Glazed paper reuse for continuous or single sheets - by wiping print by cleaning or recycling computer paper |
| 01/05/1993 | US5176796 Avoiding pitch troubles using acylgerol lipase |
| 12/29/1992 | CA1312152C Pressurized flotation module and method for pressurized foam separation |
| 12/16/1992 | EP0517988A1 A process to obtain a molding pulp starting from short fiber cellulose |
| 12/10/1992 | WO1992021813A1 Biobleaching process |
| 12/09/1992 | EP0517360A1 Prevention of stickies in papermaking |
| 12/08/1992 | US5169497 Application of enzymes and flocculants for enhancing the freeness of paper making pulp |
| 12/08/1992 | CA2044100A1 Biobleaching process |
| 12/01/1992 | CA2069054A1 Deinking method |
| 11/26/1992 | WO1992008842A3 Method for producing dietary fibers from nonwoody lignocellulosic substrates by oxidation |
| 11/25/1992 | EP0514901A2 Dye removal in oxygen color stripping of secondary fibers |
| 11/25/1992 | EP0514864A1 Oxygen detackification in secondary fiber recovery |
| 11/25/1992 | EP0514740A1 Process of pulping waste paper for deinking |
| 11/25/1992 | EP0419500B1 Method for deinking wastepaper |
| 11/19/1992 | EP0513140A1 A process for the bleaching of chemical pulp. |
| 11/19/1992 | DE4137761A1 Verfahren zur delignifizierung von lignocellulosehaltigem material, bleiche und behandlung von abwaessern mittels laccasen mit erweiteter wirksamkeit Process for the delignification of lignocellulosic material, pale and treatment of wastewater by means of laccases with extended effectiveness |
| 11/19/1992 | DE4115575A1 Bleach compsns. esp. for paper making - contg. sulphite and/or dithionite and borohydride, giving improved whiteness levels |
| 11/18/1992 | WO1992020857A1 Process, using enhanced-action laccase enzymes, for the delignification or bleaching of lignocellulose-containing material or for the treatment of waste water |
| 11/18/1992 | CA2103260A1 A process for the delignification of material containing lignocellulose, bleaching and treatment of white water by means of laccases with extended efficiency |
| 11/12/1992 | WO1992019808A1 Lipase-catalyzed ester hydrolysis |
| 11/11/1992 | EP0512978A1 Process for bleaching xylan and lignocellulose containing materials |
| 11/11/1992 | EP0512790A1 Treatment of alkali treated pulp for use in papermaking |
| 11/11/1992 | EP0512212A1 Process for deinking wastepaper |
| 11/11/1992 | EP0512035A1 Alkoxylated compounds produced from epoxylated carboxylic acid derivatives. |
| 11/04/1992 | EP0511933A2 Dictyoglomus microorganisms and their xylanolytic enzymes |
| 11/03/1992 | CA2067880A1 Method of bleaching xylan and lignocellulose-containing materials |
| 10/29/1992 | WO1992018688A1 Use of cellulase for pulp treatment |
| 10/29/1992 | WO1992018638A1 Lipase-catalyzed ester hydrolysis |
| 10/28/1992 | EP0510954A1 Process and composition for deinking dry toner electrostatic printed wastepaper |
| 10/27/1992 | US5158697 Deinking agent for reproduction of printed waste papers |
| 10/26/1992 | CA2065712A1 Process and composition for deinking dry toner electrostatic printed wastepaper |
| 10/21/1992 | EP0457865A4 Method for bleaching with reduced organic chlorides |
| 10/19/1992 | WO1992018612A1 Novel microorganisms and novel enzymes |
| 10/19/1992 | CA2108567A1 Novel microorganisms and novel enzymes |
| 10/15/1992 | WO1992017638A1 Process for removing printing ink from waste paper |
| 10/15/1992 | WO1992017592A1 Cloning and expression of dna molecules encoding arabinan-degrading enzymes of fungal origin |
| 10/15/1992 | CA2084056A1 Cloning and expression of genes encoding arabinan-degrading enzymes of fungal origin |
| 10/14/1992 | CN1065276A Process for polymerization of itaconic acid |
| 10/07/1992 | EP0507723A1 Xylanase, corresponding recombinant DNA sequence, xylanase containing agent, and use of the agent |
| 10/07/1992 | EP0507369A2 Cloning, expression and use of acetyl xylan esterases from fungal origin |
| 10/07/1992 | EP0507325A1 Deinking composition and deinking method |
| 10/03/1992 | WO1992017573A1 Xylanase, corresponding recombinant dna sequence, xylanase containing agent, and use of the agent |
| 10/03/1992 | CA2106484A1 Xylanase, corresponding recombinant dna sequence, xylanase containing agent, and use of the agent |
| 10/03/1992 | CA2064280A1 Integrated wastepaper treatment process |
| 10/01/1992 | WO1992016687A1 A method for reducing pitch trouble in mechanical pulp |
| 10/01/1992 | WO1992016686A1 Method for recycling plastic coated paper product waste and polymeric film |
| 10/01/1992 | DE4110379A1 Verfahren zur altpapierbehandlung A method for treating waste paper |
| 10/01/1992 | CA2105159A1 A method for reducing pitch trouble in mechanical pulp |
| 09/30/1992 | EP0506246A1 Preparation of itaconic acid polymers |
| 09/30/1992 | EP0506190A1 Cloning and expression of genes encoding arabinan-degrading enzymes of fungal origin |
| 09/30/1992 | EP0506014A1 Process for the removal of ink from waste paper |
| 09/29/1992 | US5151155 Recovering paper pulp for recycle of newspaper |
| 09/28/1992 | CA2063197A1 Process for polymerization of itaconic acid |
| 09/22/1992 | US5149648 Enzymes employed for producing pulps |
| 09/17/1992 | WO1992015751A1 Recycling waste cellulosic material |
| 09/15/1992 | US5147503 Recycling waste cellulosic material with sodium sulphide digestion |
| 09/02/1992 | EP0500559A1 Method of processing used paper in the presence of hydroxysulphonate salts |
| 09/02/1992 | EP0231275B1 Use of ligninolytic enzymes in paper pulp production |
| 08/26/1992 | EP0499618A1 Hydrolysis of resin in pulp. |
| 08/25/1992 | US5141598 Process and composition for deinking dry toner electrostatic printed wastepaper |
| 08/20/1992 | WO1992013942A1 Xylanase, xylanase-producing bacillus and applications thereof |
| 08/20/1992 | CA2101063A1 Xylanase, xylanase-producing bacillus and applications thereof |
| 08/18/1992 | US5139616 Inhibiting pressure sensitive or hot melt adhesives from contaminating aqueous plup slurry by the addition of a surfactant and a solvent |
| 08/13/1992 | DE4103983A1 Raising degree of hydrolysis in cellulose@ and paper industry - by use of microorganism producing anthraquinone or metabolite as catalyst |
| 08/12/1992 | EP0497812A1 A process of combatting microorganisms. |
| 08/11/1992 | US5137599 Conversion of pulp and paper mill sludge to papermaking pulp |
| 08/06/1992 | WO1992013130A1 Method for avoiding pitch troubles by use of thermostable lipase |
| 08/05/1992 | EP0496772A1 Aqueous dispersions containing alkaline earth soaps and/or alkaline earth resin soaps for de-inking printed waste paper |
| 07/29/1992 | EP0496671A1 Enzymatic treatment of a chemical ligno-cellulosic pulp |
| 07/28/1992 | US5133834 Slurrying, gas injection; packaging, insulation, filtration, coating |
| 07/28/1992 | US5133833 Process for repulping of fiber-latex binder composites |
| 07/28/1992 | US5133832 Process and system for preparation of waste paper stock with short and long fiber fractionation |
| 07/26/1992 | CA2059788A1 Enzyme mediated treatment of a chemical lignocellulosic pulp |
| 07/22/1992 | WO1992013131A1 Process for bleaching pulp |
| 07/22/1992 | CN1062939A Method for making artificial fibre pulp and xylitol using corn stalk as material |
| 07/22/1992 | CA2076679A1 Method of pulp bleaching |
| 07/21/1992 | US5131982 Use of dadmac containing polymers for coated broke treatment |
| 07/21/1992 | US5131980 Hydrocyclone removal of sticky contaminants during paper recycling |
| 07/15/1992 | EP0494399A1 Process to direct and treat production waters in a paper factory with installation for treatment of waste paper |
| 07/15/1992 | EP0494157A1 Flotation process for removing fillers from waste paper in the presence of polymers and copolymers. |
| 07/08/1992 | EP0493726A1 Fibrous composition for making paper, paper and its use, and process for making the fibrous composition and the paper |
| 07/01/1992 | EP0492507A1 Deinking method and deinking composition |
| 07/01/1992 | EP0492224A1 Deinking agent for the reclamation of waste paper |
| 07/01/1992 | EP0492121A1 Process of treating sludge from paper production effluents and use of this sludge |
| 07/01/1992 | CN1017269B Pressurized flotation modules and method for pressurized from separation |