| Patents for D21C 3 - Pulping cellulose-containing materials (5,020) |
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| 02/02/2006 | US20060021724 comprising a xylanolytic bacterial strain, providencia and a ligninolytic bacteria consisting of serratia, and pseudomonas; biologically pure cultures; environmentally friendly, safe and efficient |
| 02/02/2006 | CA2570997A1 Methods to decrease scaling in digester systems |
| 02/01/2006 | CN1239780C Cellulose ethers and method of preparing same |
| 01/26/2006 | WO2006007683A1 Method and apparatus for deriving information from liquor obtained in the course of a wood digestion reaction |
| 01/26/2006 | US20060020122 Xylanase, microorganisms producing it, DNA molecules, methods for preparing this xylanase and uses of the latter |
| 01/19/2006 | WO2006006934A1 Method and arrangement for impregnating chips |
| 01/17/2006 | US6986828 Allows the application of a controlled depressurisation which in turn allows to keep the natural texture of the fibers and to obtain a cellulose having a low degree of polymerization. |
| 01/11/2006 | CN1718920A Bleaching method of cotton stalk chemical pulp |
| 01/11/2006 | CN1718919A Method of preparing bleached chemical pulp using cotton stalk |
| 01/11/2006 | CN1718916A Method of preparing paper product using cotton stalk chemical pulp |
| 01/11/2006 | CN1718915A Method of manufacturing pulp using sunflower seed skin |
| 01/05/2006 | WO2006001758A1 Method and arrangement for impregnation of chips |
| 01/04/2006 | EP1611281A1 Purification of alkaline washing liquid |
| 01/04/2006 | CN1715556A Method for pulping and paper-making |
| 01/04/2006 | CN1715555A Continuous boiling method and its device for semi chemical mechanical slurry of long bast fiber raw material |
| 01/04/2006 | CN1715554A Water washing continuous boiling method and its device for grass fiber raw material |
| 12/29/2005 | US20050284592 Methods to decrease scaling in digester systems |
| 12/28/2005 | EP1395700A4 Methods to enhance pulp bleaching and delignification |
| 12/28/2005 | EP1238141B1 Fibers from plant seeds and use |
| 12/22/2005 | US20050279469 Retention aid additives for paper making |
| 12/22/2005 | US20050279468 Method and system for feeding cellulose chips to a high pressure continuous cooking system |
| 12/22/2005 | CA2765084A1 Method and system for feeding cellulose chips to a high pressure continuous cooking system |
| 12/21/2005 | EP1606446A1 Methods for bleaching of cellulosic materials |
| 12/21/2005 | EP1177037B1 Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics |
| 12/15/2005 | WO2005118950A1 Method for producing a chemical conversion pulp |
| 12/15/2005 | WO2005118923A1 Method for producing cellulose shaped bodies |
| 12/15/2005 | US20050274469 Highly refined fiber mass, process of their manufacture and products containing the fibers |
| 12/15/2005 | US20050274468 Central screen |
| 12/15/2005 | US20050274467 Digester wash extraction by individual screen flow control |
| 12/15/2005 | CA2568594A1 Method for producing a dissovling pulp |
| 12/14/2005 | EP1604060A1 Method for producing corn stalk pulp and paper products from corn stalk pulp |
| 12/14/2005 | CN1707019A Fast enviornment protection cold soaking pulping process with broad-leaved wood material |
| 12/14/2005 | CN1231633C Method for combining living-paper using collagenous fiber and plant =-fiber |
| 12/08/2005 | WO2005116327A1 Central screen |
| 12/08/2005 | US20050269048 Novel catalytic reactor process for the production of commercial grade pulp, native lignin & unicellular protein |
| 12/08/2005 | CA2567046A1 Central screen |
| 11/30/2005 | EP1599267A1 Foam control agent |
| 11/30/2005 | CN1702235A Method for producing packing paper board by explosion pulp of oil palm fruit shell |
| 11/29/2005 | CA2368872C Method for separating lignocellulose-containing biomass |
| 11/23/2005 | CN1699687A Paper-making method using straw and corn stalk mixed pulp |
| 11/22/2005 | US6966970 Method for supplying washing liquid to a process for cooking cellulose pulp |
| 11/17/2005 | US20050252625 Process for the manufacturing of cellulose pulp |
| 11/16/2005 | CN1697901A Method for producing corn stalk pulp and paper products from corn stalk pulp |
| 11/16/2005 | CN1696397A Digesting assistant in use for papermaking |
| 11/16/2005 | CN1227409C Method for producing furfural, acetic acid and formic acid from spent pulp-cooking liquor |
| 11/16/2005 | CN1227408C 'Dongba' paper used by 'Naxi' nationality and preparation method |
| 11/10/2005 | WO2005106110A1 Method for mechanical pulp production |
| 11/10/2005 | CA2565923A1 Method for mechanical pulp production |
| 11/09/2005 | CN1693583A Closed circuit normal pressure, modium temperature bamboo pulping method |
| 11/09/2005 | CN1693582A Low pressure blast pulping method in palm fiber |
| 11/09/2005 | CN1693581A Manufacturing method of soluble bamboo pulp |
| 11/03/2005 | WO2005103371A1 A process of making bamboo pulp for producing cellulose diacetate |
| 11/03/2005 | WO2005103370A1 Enzyme treatment of wood pulp |
| 11/02/2005 | CN1225585C Increasing causticizing efficiency of alkaling pulping liquor by borate addition |
| 10/26/2005 | CN1224736C Lyocell fibers |
| 10/19/2005 | EP1585856A1 Cooking aid for improving the removal of extractives in pulp production, its production and use |
| 10/19/2005 | CN1683712A PBO fiber paper base material and its preparing method and use |
| 10/19/2005 | CN1683711A Biological pulping process for paper making |
| 10/18/2005 | US6955743 Method for producing furfural, acetic acid and formic acid from spent pulp-cooking liquor |
| 09/27/2005 | CA2392292C Determination of kappa number in chemical pulps by raman spectrometry |
| 09/27/2005 | CA2346915C Method for producing cellulose |
| 09/21/2005 | CN1219938C Pulping digestion agent production method |
| 09/21/2005 | CN1219919C Method of mfg. Laiosai fiber compsn. |
| 09/21/2005 | CN1219918C Method of mfg. Laiosai fiber |
| 09/20/2005 | US6946280 Multimeric proteins comprising subtilisins derived from bacillus, used for medical diagnosis |
| 09/20/2005 | US6946057 Alkaline process for the manufacturing of pulp using alkali metaborate as buffering alkali |
| 09/20/2005 | US6946056 Intensity in the spectrum around 232 nm constitutes a significant value for the current content of hexenuronic acid in the paper pulp, is corrected in dependence on an optical property in another wavelength interval |
| 09/20/2005 | CA2179914C Production of prehydrolyzed pulp |
| 09/14/2005 | EP1470288B1 Continuous cooking of cellulose pulp with improved heat economy |
| 09/14/2005 | CN2725345Y Oxygen stirring straw filament separating machine |
| 09/14/2005 | CN1668805A Method of deresinating pulp using alkyl alcohol alkoxylate surfactants |
| 09/08/2005 | US20050194111 Methods to enhance pulp bleaching and delignification |
| 09/07/2005 | EP1570042A1 Methods and systems for pretreatment and processing of biomass |
| 09/07/2005 | CN1218086C Naxidongba paper making process with papermulberry bark |
| 09/06/2005 | US6939439 Batch process for producing chemical pulp by removing and reintroducing calcium-containing spent liquor in the digester |
| 09/01/2005 | US20050191400 Enhanced fiber additive; and use |
| 08/25/2005 | US20050183836 Enhanced fiber additive; and use |
| 08/24/2005 | CN1657696A Process for pulping by biochemical solvent |
| 08/24/2005 | CN1657695A Production method of stencil tissue paper |
| 08/24/2005 | CN1657694A Wood method for pulping using cotton stalk, bush or brush |
| 08/24/2005 | CN1216203C Clean pulping catalyst and its application process |
| 08/18/2005 | WO2005075730A1 A method to destabilize foams and to prevent foaming of fatty acid and/or resin acid soap containing liquids |
| 08/16/2005 | CA2248728C Process for continuously guiding liquids when digesting pulp in a digester |
| 08/11/2005 | US20050173081 Method for continuous cooking |
| 08/10/2005 | EP1561856A1 Method for continuous cooking of cellulose pulp |
| 08/10/2005 | EP1560975A2 Highly refined fiber mass, process of their manufacture and products containing the fibers |
| 08/10/2005 | CN1214151C Pulping method of non-wood fibers with no black liquor drained off |
| 08/04/2005 | US20050170471 Enzyme multimer and process of producing same |
| 08/03/2005 | CN1648333A Circulation pulping device for no-boiling biochemical solvent continuous dipping catalyst cracking |
| 08/03/2005 | CN1648332A Paper-making method by pulping |
| 08/03/2005 | CN1213197C Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
| 07/28/2005 | US20050161177 Method for the modification of cellulose fibres |
| 07/21/2005 | US20050155730 Delignification catalyst is an aqueous quinone; wood impregnation step using alkaline pulping liquor comprising boron compounds; white liquor sulfidity below twenty five percent; extract cellulose spent liquor comprising tall oil soap |
| 07/19/2005 | CA2112802C Production of pulp by the soda-anthraquinone process (sap) with recovery of the boiling chemicals |
| 07/14/2005 | WO2005064078A1 Feed of a mixture of chips and fluid from a low-pressure system to a high-pressure system |
| 07/14/2005 | WO2005064077A1 Closed cycle zero discharge bio-oxidizing pulping process |
| 07/14/2005 | WO2005064076A1 Closed cycle zero discharge oxidizing pulping process |
| 07/14/2005 | WO2005064075A1 Batch process for preparing pulp |
| 07/14/2005 | CA2530704A1 Batch process for preparing pulp |
| 07/13/2005 | EP1552053A1 A continuous process for the cooking of cellulose-besed pulp and a pulp digester applicable for the same |