| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 07/19/2007 | US20070163735 Method for reducing brightness reversion of mechanical pulps and high-yield chemical pulps |
| 07/18/2007 | EP1409632B1 Method of making a composition, a product from such method, and the use thereof in removing or dissolving a contaminant from an environment |
| 07/18/2007 | CN1326994C Alkaling bacillus amylase |
| 07/18/2007 | CA2561250A1 Wash liquid spray nozzles for pulp mat and method to assemble nozzle |
| 07/17/2007 | US7244338 Using didecyldimethyl ammonium halide; cement reinforcement |
| 07/12/2007 | WO2007078247A1 A process for the manufacture of peracetic acid and a method to bleach chemical pulp with peracetic acid |
| 07/12/2007 | US20070158040 Method and apparatus for estimating an optimal dosage of bleaching agent to be used in a process for producing pulp |
| 07/11/2007 | EP1805360A1 Apparatus and method for washing pulps |
| 07/11/2007 | CN1325724C Neutral deinking method for waste newspaper |
| 07/05/2007 | US20070151680 Treatment of cellulose during bleaching with agent capable of reducing carbonyl groups |
| 07/05/2007 | US20070151679 Method of producing fibre products |
| 07/04/2007 | EP1802806A1 System for control of stickies in recovered and virgin paper processing |
| 07/04/2007 | EP1802804A1 Absorbent articles comprising thermosplastic resin pretreated fibers |
| 07/04/2007 | CN2918510Y Apparatus for eliminating damaged pulp web in pulp dryer and maintaining platform of pulp dryer |
| 07/04/2007 | CN2918507Y Screw extrusion machine |
| 07/04/2007 | CN1993518A Pulp bleaching processes |
| 07/04/2007 | CN1993517A Improved composition and processes for paper production |
| 07/04/2007 | CN1324191C Highly pare lignin, hihg efficiency fiber separating technology |
| 07/03/2007 | CA2214082C Plant for producing hydrogen peroxide in situ in a paper mill |
| 06/28/2007 | WO2007073342A1 Process for manufacturing paper or paperboard |
| 06/28/2007 | WO2007073310A1 Washing apparatus for washing cellulose pulp |
| 06/28/2007 | WO2007071187A1 A method for making paper pulp by reacting hydrogen peroxide and alkali substance |
| 06/28/2007 | US20070144692 Methods for preparing alkali cellulose and cellulose ether |
| 06/28/2007 | US20070143932 Process for producing a fibre compositions |
| 06/27/2007 | EP1175194B1 Absorbent articles with nits and free-flowing particles |
| 06/21/2007 | WO2007070527A2 Process for treating a cellulose-lignin pulp |
| 06/21/2007 | CA2633540A1 Process for treating a cellulose-lignin pulp |
| 06/19/2007 | US7231714 Kraft chemicals are recovered from black liquor in a kraft recovery boiler having metal tubes subject to corrosive and cracking forces of the kraft recovery process, in a wall or floor of the boiler, wherein the improvement comprises that at least some of the tubes comprise composite tubes |
| 06/14/2007 | WO2007065969A1 Method of producing paper and cardboard |
| 06/14/2007 | WO2007065241A1 A novel catalytic reactor process for the production of commercial grade pulp, native lignin and unicellular protein |
| 06/14/2007 | US20070131365 Method of brightness enhancement |
| 06/14/2007 | US20070131364 Process for treating a cellulose-lignin pulp |
| 06/14/2007 | US20070131362 Process for producing a fibrous product |
| 06/13/2007 | EP1795648A2 Dewatering and thickening belt and manufacturing method thereof |
| 06/13/2007 | EP1795647A2 Dewatering and thickening belt and manufacturing method thereof |
| 06/13/2007 | CN1980865A Procedure for dewatering of suspensions |
| 06/12/2007 | US7229527 Method for the controlled thickening of low consistency fiber suspensions |
| 06/12/2007 | US7229526 Method and apparatus for the feeding of fibers |
| 06/12/2007 | US7229525 Methods to enhance pulp bleaching and delignification |
| 06/07/2007 | WO2007064606A1 Methods for reducing wax content of pulp furnish |
| 06/06/2007 | EP1793034A1 A system for causing mechanical processing of a fibre suspension |
| 06/06/2007 | CN1974922A Method for producing chemical fiber pomace with fiber as raw material |
| 06/06/2007 | CN1974921A Method for producing bamboo pomace |
| 06/05/2007 | US7226525 Process for producing very low COD unbleached pulp |
| 05/31/2007 | WO2007006368A3 Method for loading fibers contained in a pulp suspension |
| 05/31/2007 | US20070119561 Method and apparatus of the prepartion of a fibrous stock suspension |
| 05/31/2007 | US20070119556 Chemical activation and refining of southern pine kraft fibers |
| 05/30/2007 | EP1790771A1 Pulp bleaching processes |
| 05/30/2007 | CN1318693C Method for manufacturing filler container chemical pulp |
| 05/30/2007 | CN1318690C In ball washing classifying digesting technology |
| 05/23/2007 | CN1969086A Device and method for cleaning of a filter net of a pulp dryer's fan tower, a pulp dryer's fan tower and a pulp dryer |
| 05/23/2007 | CN1317450C Method and arrangement in making of mechanical pulp |
| 05/22/2007 | CA2306939C Polymers as detackification agents for adhesives contained in secondary fiber |
| 05/18/2007 | WO2007054610A1 A new pulp and process for pulping |
| 05/18/2007 | CA2627265A1 A new pulp and process for pulping |
| 05/17/2007 | US20070107862 Sodium sulfate treated pulp |
| 05/17/2007 | US20070107861 Method for producing a paper web, and paper machine |
| 05/16/2007 | CN1963016A Deinking method for office waste paper |
| 05/16/2007 | CN1963015A Blade device for high-speed pulp washer |
| 05/15/2007 | CA2398232C Method and measurement device for measuring suspension |
| 05/10/2007 | WO2007051907A1 A method and an apparatus for removing extractives from fibrous suspension |
| 05/10/2007 | US20070105112 Laccases, nucleic acids encoding them and methods for making and using them |
| 05/10/2007 | CA2627420A1 A method and an apparatus for removing extractives from fibrous suspension |
| 05/09/2007 | CN1961117A Method and apparatus of the prepartion of a fibrous stock suspension |
| 05/08/2007 | US7214292 Addition of THP or THP+ salt to pulping liquors to destroy catalase and/or catalase producing bacteria |
| 05/08/2007 | US7214291 Adding a treatment fluid during alkali cooking or during delignification of cellulose chips in a cellulose suspension;the treatment fluid releasing from the cellulose fibers a concentration of calcium exceeding 20 mg/l |
| 05/08/2007 | US7214172 Seal at press rollers |
| 05/02/2007 | EP1778911A1 Process for the enzymatic oxidation of a substrate comprising a primary hydroxyl group |
| 05/02/2007 | CN2895501Y Dewatering centrifugal machine |
| 05/02/2007 | CN2895500Y Agitation washing apparatus |
| 05/02/2007 | CN1957138A New composition and process for the treatment of fibre material |
| 05/02/2007 | CN1313674C Production method of stencil tissue paper |
| 05/01/2007 | CA2102899C Ozone bleaching process |
| 04/26/2007 | WO2005099554A3 Dual zone wireless pulp washer |
| 04/25/2007 | CN1312357C Purification decolouring technology of poly aluminium chloride solution used for paper making sizing precipitant |
| 04/25/2007 | CN1312354C Process for bleaching lignocellulose-containing non-wood pulp |
| 04/25/2007 | CN1312353C New process for lipase waste paper deinking |
| 04/25/2007 | CN1312278C Use of lipolytic enzymes for stickies control |
| 04/24/2007 | CA2391576C Paper making processes using enzyme and polymer combinations |
| 04/18/2007 | EP1774097A2 Use of cyclodextrin for reducing yellowing of pulp and paper |
| 04/18/2007 | EP1774088A1 Method for removing lignin from water |
| 04/18/2007 | CN1950437A Methods to enhance brightness of pulp and optimize use of bleaching chemicals |
| 04/18/2007 | CN1948612A Method and device of preparing bleaching paste using bioenzyme |
| 04/18/2007 | CN1948611A Self coupled oxidation cleaning pulp making method |
| 04/18/2007 | CN1311131C Method of manufacturing pulp using sunflower seed skin |
| 04/17/2007 | US7204914 System and method for controlling a processor including a digester utilizing time-based assessments |
| 04/12/2007 | WO2007039867A1 Densified fibrous structures and methods for making same |
| 04/12/2007 | WO2005103373A3 Method for controlling a bleaching process for waste paper treatment and bleaching device for carrying out said method |
| 04/12/2007 | US20070079944 Product and processes from an integrated forest biorefinery |
| 04/11/2007 | EP1368285B1 Fiber reinforced cement composite materials using chemically treated fibers with improved dispersibility |
| 04/11/2007 | EP0941381B1 Method for controlling oxygen delignification of pulp |
| 04/11/2007 | CN1309906C An apparatus and a method for controlling the alkalinity and pH of an industrial process |
| 04/10/2007 | US7201825 Process for making a flowable and meterable densified fiber particle |
| 04/05/2007 | WO2007037752A1 Arrangement for mixing steam into a flow of cellulose pulp |
| 04/05/2007 | US20070074832 Densified fibrous structures and methods for making same |
| 04/05/2007 | US20070074831 Systems and methods for treating raw materials for wood product formation |
| 04/04/2007 | CN1940178A Removal of colloid and soluble substance during papermaking process by cationic nano-grain |
| 04/04/2007 | CN1940177A Three-sectional bleaching process of vegetable-fible slurry |
| 04/04/2007 | CN1940176A Two-sectional bleaching process of vegetable-fibre slurry |
| 04/03/2007 | US7198695 Method for separating hemicelluloses from a biomass containing hemicelluloses and biomass and hemicelluloses obtained by said method |