| Patents for D21C 1 - Pretreatment of the finely-divided materials before digesting (1,872) |
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| 07/15/2009 | CN100513680C Paper pulp making technology by biological catalytic cracking method |
| 07/02/2009 | US20090165968 Modified kraft fibers |
| 06/17/2009 | EP2069406A2 Advanced biorefinery process |
| 06/14/2009 | CA2643780A1 A method and system to enhance fiber development by addition of treatment agent during mechanical pulping |
| 06/11/2009 | US20090145564 Method for production of wood material articles with low emissions of chemical compounds |
| 06/10/2009 | EP2067793A1 Utilization of a wood hydrolysate |
| 06/04/2009 | WO2009068525A1 Utilization of a wood hydrolysate |
| 06/04/2009 | CA2706993A1 Utilization of a wood hydrolysate |
| 06/03/2009 | EP2065513A1 Arrangement and method for the continuous steam pre-treatment of chips during the production of cellulose pulp |
| 05/30/2009 | CA2645382A1 Arrangement and method for the continuous steam pre-treatment of chips during the production of cellulose pulp |
| 05/27/2009 | CN101440108A Normal atmosphere degreasing crude glycerine pretreatment method for separating wood fiber biomass components |
| 05/26/2009 | CA2418726C Cellulose production from lignocellulosic biomass |
| 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 | CN101435170A Ginger terrestrial stem paper and manufacturing process thereof |
| 05/20/2009 | CN101435164A Modified production process of paper making level sulphate wood pulp plate |
| 05/13/2009 | EP2057291A1 Method and device for thermal enzymatic hydrolysis of ligno cellulose |
| 05/13/2009 | CN101429733A Bamboo wood dissolving pulp manufacturing process |
| 05/12/2009 | CA2381414C Process for preventing scaling of heat transfer surfaces |
| 05/06/2009 | EP1328679B1 Cellulose production from lignocellulosic biomass |
| 04/30/2009 | US20090107643 Method For Mechanical Pulp Production |
| 04/29/2009 | CN101418531A Method for preparing eucalyptus and poplar mixture material bleached chemical thermomechanical pulp |
| 04/22/2009 | EP1395539B1 A method for isolating phenolic substances or juvabiones from wood comprising knotwood |
| 04/16/2009 | US20090095430 Treatment vessel for straw or other light bulky material |
| 04/09/2009 | WO2008048426A4 Modified kraft fibers |
| 04/08/2009 | EP1434674B1 Device and method for vacuum impregnation |
| 04/02/2009 | US20090084511 Method and Apparatus for Processing Wood Chips |
| 04/01/2009 | CN201214731Y Complete plant for pre-dipping process of cotton pulp |
| 04/01/2009 | CN101397762A Pulp manufacturing technology and material preprocessor |
| 03/31/2009 | US7510857 Thermostable cellulase and methods of use |
| 03/31/2009 | US7510625 to subject materials to high pressure such as breaking apart cellulose fibers and the removal of lignin in the wood pulp industry and the hardening of metals such as golf clubs |
| 03/25/2009 | EP1702100B1 Process for removing interfering substances in the production of mechanical pulp and process for producing mechanical pulp |
| 03/10/2009 | US7501043 Steam treatment of chips with the addition of an acid liquid |
| 03/05/2009 | US20090062523 Method for Separating the Main Components of Lignocellulosic Materials |
| 03/04/2009 | EP1320640B1 Steaming process |
| 03/04/2009 | CN101379242A Method for recovering hydrolysis products |
| 02/25/2009 | EP1702101B1 Batch process for preparing pulp |
| 02/19/2009 | WO2008048426A3 Modified kraft fibers |
| 02/19/2009 | US20090047497 Grass (herbaceous plant) fiber |
| 02/11/2009 | EP1546450A4 Method of deresinating pulp using alkyl alcohol alkoxylate surfactants |
| 02/11/2009 | CN100460595C Environment-friendly pulping agent and process |
| 01/28/2009 | CN101353868A Alkaline process cooking method for preparing high-hardness pulp from gramineae plants |
| 01/22/2009 | US20090020244 Impregnation vessel with convergence side relief and method for heat injection at convergence |
| 01/21/2009 | EP2017382A2 Impregnation vessel with convergence side relief and method for heat injection at convergence |
| 01/16/2009 | CA2635871A1 Impregnation vessel with convergence side relief and method for heat injection at convergence |
| 01/15/2009 | US20090014138 Production of Pulp Using a Gaseous Organic Agent as Heating and Reaction-Accelerating Media |
| 01/14/2009 | EP2014827A2 Single vessel reactor system for hydrolysis and digestion of wood chips with chemical enhanced wash method |
| 01/14/2009 | EP1664421A4 Chemimechanical desilication of nonwood plant materials |
| 01/14/2009 | CN100451235C Paper pulp manufacturing process and equipment |
| 01/07/2009 | CN101341288A Process for producing chemi-mechanical pulp |
| 12/31/2008 | CN101333775A Method of preparing paper pulp form paper making raw material of stalk |
| 12/25/2008 | CA2599773A1 Method and system for direct contact of hot liquor with wood chips in transfer circulation |
| 12/24/2008 | CN201169724Y Paper pulp raw material dewatering conveyor |
| 12/24/2008 | CN100445463C Method of preparing pulp by anaerobic fermenting Spartina alterniflora and cooking soda, anthraquinone and fermented Spartina alterniflora |
| 12/17/2008 | EP2003241A2 Two vessel reactor system and method for hydrolysis and digestion of wood chips with chemical enhanced wash method |
| 12/10/2008 | CN101319471A Environment friendly energy-saving circulation type non-pollution pulping process and its system apparatus |
| 11/27/2008 | CA2686257A1 Methods to control organic contaminants in fibers |
| 11/26/2008 | EP1995376A1 Method of manufacturing pulp |
| 11/20/2008 | WO2008138423A1 Method for reducing the heavy metal content of raw material containing lignocellulose |
| 11/20/2008 | WO2008138109A1 Pectate lyases with increased thermostability and/or enzymatic activity |
| 11/20/2008 | CA2686887A1 Pectate lyases with increased thermostability and/or enzymatic activity |
| 11/13/2008 | US20080277081 Method and Arrangement For Impregnation of Chips |
| 11/13/2008 | DE102007022754A1 Verfahren zum Verringern des Schwermetallgehalts von lignocellulosischem Rohstoff A method for reducing the heavy metal content of lignocellulosic raw material |
| 11/12/2008 | CN100432334C Process for making pulp with white paper mulberry |
| 11/04/2008 | US7445691 Impregnation of chips with an acid liquid prior to a sulphate pulping process |
| 10/29/2008 | EP1984562A1 Method for recovering hydrolysis products |
| 10/01/2008 | CN101275371A Non-chemical steaming semi-mechanical pulping paper making process and apparatus therefor |
| 09/10/2008 | CN100417500C Arundo donax pulp, paper product and flakeboard |
| 09/04/2008 | US20080213871 Expression vector comprising nucleotide sequences coding short interfering RNA for use in increasing cellulose production in plants and drecreasing cost of pretreating biofuels |
| 08/28/2008 | US20080202713 reducing volatile organic compound (VOC) emissions generated during refining cellulose fibers, by transporting a mixture of fibers and steam containing VOC's into a steam separator, then discharging cleaned fibers, mixing with a phenol-formaldehyde resin and drying the mixture |
| 08/21/2008 | US20080199938 Glucanse comprising substituted amino acids for use in enhancing detergents and improving the touch and/or appearance of cellulose-containing fabric |
| 08/20/2008 | EP1957707A1 A system and a method for the steam pre-treatment of chips in association with the production of chemical cellulose pulp |
| 08/13/2008 | CN101240514A Method for preparing paper pulp |
| 08/08/2008 | CA2578305A1 Process for recovery of oligosaccharides and polysaccharides during pulping |
| 07/30/2008 | CN101230552A Technique for chemomechanical pulp-making of poplar wood |
| 07/24/2008 | WO2008088077A1 Method for production of pulp |
| 07/24/2008 | CA2681464A1 Pulp production process |
| 07/16/2008 | CN101223273A 纤维素酶的产生 Cellulase produced |
| 07/16/2008 | CN101220569A Pulping bleaching assistant and cold soaking pulping process |
| 07/08/2008 | US7396435 introducing pulps to rotating screw conveyors, then depositing on moving belts, smoothening and feeding to a flaker to reduce the size of pulp into flakes |
| 07/08/2008 | US7396434 Catalytic reactor process for the production of commercial grade pulp, native lignin and unicellular protein |
| 07/08/2008 | CA2318027C Treating pulp with yield or strength-enhancing additive |
| 07/02/2008 | CN100398745C Chemical and machinery pulping process using complete white mulberry branch as raw material |
| 06/26/2008 | WO2008074220A1 A preparation method of a bamboo pulp |
| 06/19/2008 | CA2848500A1 Methods of processing biomass comprising electron-beam radiation |
| 06/19/2008 | CA2847914A1 Methods of processing biomass comprising electron-beam radiation |
| 06/19/2008 | CA2847476A1 Methods of processing biomass comprising electron-beam radiation |
| 06/19/2008 | CA2847426A1 Methods of processing biomass comprising electron-beam radiation |
| 06/19/2008 | CA2847243A1 Methods of processing biomass comprising electron-beam radiation |
| 06/19/2008 | CA2823382A1 Methods of processing biomass comprising electron-beam radiation |
| 06/19/2008 | CA2823381A1 Methods of processing biomass comprising electron-beam radiation |
| 06/19/2008 | CA2823376A1 Methods of processing biomass comprising electron-beam radiation |
| 06/19/2008 | CA2823305A1 Methods of processing biomass comprising electron-beam radiation |
| 06/19/2008 | CA2823244A1 Methods of processing biomass comprising electron-beam radiation |
| 06/19/2008 | CA2823243A1 Methods of processing biomass comprising electron-beam radiation |
| 06/18/2008 | EP1932967A2 A method for producing cellulose pulp in a continuous digester in an energy-efficient manner |
| 06/10/2008 | US7384502 Process for impregnating, refining, and bleaching wood chips having low bleachability to prepare mechanical pulps having high brightness |
| 06/04/2008 | CN100392178C Cow dung paper pulp producing process with cow dung as material |
| 06/03/2008 | US7381302 Method and arrangement for impregnating chips |
| 05/28/2008 | CN101187181A Alkaline method for zero-residual alkaline boiling pulp making method |
| 05/28/2008 | CN100390353C Environment protection pulping and papermaking method |