| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 07/01/2009 | EP2074257A1 Treatment of pulp |
| 07/01/2009 | CN101473089A Pulp reactivity enhancement |
| 06/30/2009 | US7553394 Method for removing potassium from ash produced in a kraft pulping process recovery boiler using a Na-type cation exchange organic resin |
| 06/30/2009 | CA2406517C Alkaline pulp having low average degree of polymerization values and method of producing the same |
| 06/30/2009 | CA2374353C System for the oxygen delignification of pulp consisting of lignocellulose-containing material |
| 06/25/2009 | WO2009076760A1 Conversion of knot rejects from chemical pulping |
| 06/24/2009 | CN101463573A Straw pulp bleaching technique |
| 06/24/2009 | CN101463572A Heating means for slurry in paper pulp bleaching technique and use |
| 06/18/2009 | WO2009075645A1 An apparatus for washing and dewatering pulp, a system for controlling such an apparatus, and a method for processing pulp in such an apparatus |
| 06/18/2009 | WO2009075643A1 An apparatus for washing and dewatering pulp |
| 06/18/2009 | WO2009075642A1 An apparatus for washing and dewatering pulp |
| 06/18/2009 | WO2009075641A1 An apparatus for washing and dewatering pulp |
| 06/18/2009 | WO2009075640A1 An apparatus for washing and dewatering pulp |
| 06/18/2009 | US20090151881 High absorbency lyocell fibers and method for producing same |
| 06/18/2009 | DE102007060736A1 Verfahren zur Entfernung von Störstoffen aus einer wässrigen Papierfasersuspension mit Hilfe mindestens einer Flotationsanlage A method for removing anionic trash from an aqueous paper fiber suspension with the aid of at least one flotation |
| 06/18/2009 | CA2708244A1 An apparatus for washing and dewatering pulp |
| 06/18/2009 | CA2708242A1 An apparatus for washing and dewatering pulp |
| 06/18/2009 | CA2708238A1 An apparatus for washing and dewatering pulp |
| 06/18/2009 | CA2707683A1 An apparatus for washing and dewatering pulp, a system for controlling such an apparatus, and a method for processing pulp in such an apparatus |
| 06/17/2009 | EP1336006B1 Method and apparatus for washing a fibre suspension |
| 06/17/2009 | CN201258432Y Plane valve drum type vacuum pulp washer drum |
| 06/17/2009 | CN101460676A Bleaching process of chemical pulp |
| 06/17/2009 | CN101460675A Bleaching process of chemical pulp |
| 06/17/2009 | CN100500990C Paper pulp cleaning and bleaching process |
| 06/16/2009 | CA2514798C Bleaching and brightness stabilization of lignocellulosic materials with water-soluble phosphines or phosphonium compounds |
| 06/14/2009 | CA2643780A1 A method and system to enhance fiber development by addition of treatment agent during mechanical pulping |
| 06/11/2009 | WO2009073145A1 Method and apparatus for measuring deposition of particulate contaminants in pulp and paper slurries |
| 06/11/2009 | WO2009070955A1 Grass type unbleached paper products and production method thereof |
| 06/11/2009 | US20090145564 Method for production of wood material articles with low emissions of chemical compounds |
| 06/11/2009 | US20090145562 Process for manufacturing pulp, paper and paperboard products |
| 06/11/2009 | CA2731073A1 Grass type unbleached paper product and preparation method thereof |
| 06/11/2009 | CA2707205A1 Method and apparatus for measuring deposition of particulate contaminants in pulp and paper slurries |
| 06/10/2009 | CN100497614C Mannanases |
| 06/04/2009 | WO2009069143A2 Synergistic composition and a process for biobleaching of ligno cellulosic pulp |
| 06/03/2009 | EP1139961A4 Absorbent structures of chemically treated cellulose fibers |
| 06/03/2009 | CN101446054A Total-chlorine-free bleaching method of paper pulp production line with annual output of more than 50,000 tons |
| 06/03/2009 | CN101446053A Whiten method for preparing bamboo chemical dissolving pulp and application thereof |
| 06/02/2009 | US7541175 Alkaline extraction stages comprising xylanase |
| 05/28/2009 | WO2009065829A1 Deposit control |
| 05/28/2009 | WO2009048525A3 Selectivity improvement in oxygen delignification and bleaching of lignocellulose pulp using singlet oxygen |
| 05/27/2009 | EP1891265B1 Method for treating a process material with large surface plasma |
| 05/27/2009 | CN101443514A Process for producing bleached pulp |
| 05/27/2009 | CN101440592A Production process of dispensable paper tableware |
| 05/20/2009 | EP2059635A1 Methods to control lipophilic extractives in acacia wood pulp and fiber |
| 05/20/2009 | CN101435175A Method for simultaneously producing sanitary napkin, pesticides farming fertilizer and anti-staling agent by agriculture and forestry appurtenance |
| 05/20/2009 | CN101435167A Cotton stalk non-chlorine bleaching and cleaning pulping process |
| 05/20/2009 | CN101435166A Pulping process mixed with wood chips |
| 05/20/2009 | CN101435165A Two-step isolation type full non-chlorine full cotton stalk bleaching pulp cleaning production process |
| 05/20/2009 | CN101435164A Modified production process of paper making level sulphate wood pulp plate |
| 05/20/2009 | CN100488910C Cementitious material reinforced with chemically treated cellulose fiber |
| 05/19/2009 | CA2357864C Process for continuous cooking of pulp |
| 05/14/2009 | WO2009061247A1 Apparatus and method for treatment of pulp |
| 05/14/2009 | CA2701297A1 Apparatus and method for treatment of pulp |
| 05/13/2009 | EP2058434A1 Herstellungsverfahren eines Papierblatts, das eine Fixierphase einer Mineralienladung auf Zellulosefasern umfasst |
| 05/13/2009 | CN101429735A Isolation type bleaching and cleaning production apparatus |
| 05/07/2009 | WO2009056177A1 Method for forming a calcium carbonate in a fibrous suspension |
| 05/07/2009 | US20090118477 Continuous counter-current organosolv processing of lignocellulosic feedstocks |
| 05/07/2009 | DE102007052459A1 Wax separating method for preparation of fibers during paper or cardboard production, involves forming aqueous fiber suspension, removing floating layer from containing wax liquid and separating predominant part of liquid wax |
| 05/07/2009 | CA2703023A1 Process for bleaching pulp |
| 05/06/2009 | EP2054548A2 Improved process for manufacturing pulp, paper and paperboard products |
| 05/06/2009 | CN101426975A Process for treating a cellulose-lignin pulp |
| 05/06/2009 | CN101426974A Method and installation for processing waste paper |
| 04/30/2009 | US20090107642 Method for oxygen delignification of cellulose pulp at high pressure in several steps |
| 04/29/2009 | EP2052109A2 Improved compositions and processes for paper production |
| 04/29/2009 | CN101421457A A method and a device for feeding pulp from a dewatering unit |
| 04/29/2009 | CN101418527A Deinking process for waste paper |
| 04/28/2009 | CA2390639C Process and composition for preparing a lignocellulose-based product, and the product obtained by the process |
| 04/28/2009 | CA2381356C Method for fixing a mineral filler on cellulosic fibres and method for making a sheet of paper |
| 04/28/2009 | CA2373490C Method for avoiding mechanical damage of pulp |
| 04/23/2009 | WO2009050336A1 Method for treating ligno-cellulosic materials |
| 04/23/2009 | US20090101296 Near Neutral Chlorine Dioxide Bleaching of Pulp |
| 04/23/2009 | CA2670040A1 Method for treating ligno-cellulosic materials |
| 04/16/2009 | WO2009048525A2 Selectivity improvement in oxygen delignification and bleaching of lignocellulose pulp using singlet oxygen |
| 04/15/2009 | EP2047032A2 Paper pulp composition and article formed therefrom |
| 04/15/2009 | EP2047030A2 Pulp reactivity enhancement |
| 04/15/2009 | CN101408007A Two vessel reactor system and method for hydrolysis and digestion of wood chips with chemical enhanced wash method |
| 04/14/2009 | CA2358904C Arrangement for adjusting width of fibre web |
| 04/09/2009 | WO2009043971A1 Method for controlling deposit formation |
| 04/09/2009 | WO2009021216A3 Lignin dewatering process |
| 04/09/2009 | US20090090478 Selectivity improvement in oxygen delignification and bleaching of lignocellulose pulp using singlet oxygen |
| 04/09/2009 | CA2700412A1 Method for controlling deposit formation |
| 04/09/2009 | CA2692717A1 Biomass treatment apparatus |
| 04/08/2009 | EP2044263A2 Hydrophobically modified poly(ethylene glycol) for use in pitch and stickies control in pulp and papermaking processes |
| 04/08/2009 | CN101403140A Plant fiber cleaning production and waste cyclic utilization method |
| 04/07/2009 | US7513973 Bleached polyacrylic acid crosslinked cellulosic fibers |
| 04/07/2009 | CA2431389C Process for producing dried singulated cellulose pulp fibers using a jet drier and injected steam and the product resulting therefrom |
| 04/07/2009 | CA2339002C Method and apparatus for feeding a mass of particulate or fibrous material |
| 04/07/2009 | CA2268386C High molecular weight trichoderma cellulase |
| 04/07/2009 | CA2136350C Xylanases from trichoderma reesei and methods for their production |
| 04/02/2009 | US20090084509 Dissolution of Cellulose in Mixed Solvent Systems |
| 04/01/2009 | EP2042650A1 Methods to enhance pulp bleaching and delignification |
| 04/01/2009 | EP1631716B1 Method for bleaching fibrous materials |
| 03/31/2009 | US7510860 Xylanases with enhanced thermophilicity and alkalophilicity |
| 03/31/2009 | CA2424775C Rapid triglyceride assay for use in pulp pitch control |
| 03/26/2009 | WO2009038529A1 Device for dewatering of pulp |
| 03/26/2009 | WO2009038516A1 A method and a device for the dewatering of a fibre suspension supplied by a nozzle assembly. |
| 03/26/2009 | CA2699757A1 A method and a device for the dewatering of a fibre suspension supplied by a nozzle assembly |
| 03/26/2009 | CA2697817A1 Device for dewatering of pulp |
| 03/25/2009 | EP2039828A1 Method for treating a paper fibre suspension |
| 03/25/2009 | EP1352057B1 Lipolytic enzyme variant |