| Patents for D21C 1 - Pretreatment of the finely-divided materials before digesting (1,872) |
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| 05/26/2006 | WO2006053939A1 Improved methods and devices for the fabrication of cellulose |
| 05/26/2006 | CA2586338A1 A method and apparatus for processing wood chips |
| 05/25/2006 | US20060108083 Process and device to disperge a recycled fibre pulp |
| 05/10/2006 | CN1769584A Pretreatment liquid of cotton rod boiling |
| 04/19/2006 | EP1366231B1 Method for separating hemicelluloses from a biomass containing hemicelluloses |
| 04/19/2006 | CN1760445A Pulping technique for fibers in grass class |
| 04/13/2006 | WO2006037860A1 Improved alkaline process and system for producing pulp |
| 04/13/2006 | WO2006037858A1 A method and a device for preparing cellulose pulp |
| 04/13/2006 | WO2006037857A1 A method and a device for preparing cellulose pulp |
| 04/13/2006 | CA2581923A1 Improved alkaline process and system for producing pulp |
| 04/06/2006 | US20060070710 Method and a device for preparing cellulose pulp |
| 04/05/2006 | EP1641430A2 Gelled starch compositions and methods of making gelled starch compositions |
| 04/05/2006 | CN2769312Y Disc type thermal dispersing device used during paper-making process |
| 03/23/2006 | US20060060316 Biopulp for non-woody fiber plants and biopulping method thereof |
| 03/22/2006 | CN2765930Y Pulp making apparatus of non-boiling , spiral chute type biochemical dissolvant continuous immersion and catalyzed cracking |
| 03/22/2006 | CN2765929Y Pulp making apparatus of non-boiling, scraper type biochemical dissolvant continuous immersion and catalyzed cracking |
| 03/08/2006 | CN1743153A Arundo donax pulp, paper product and flakeboard |
| 03/07/2006 | US7008505 Eucalyptus biomechanical pulping process |
| 03/02/2006 | WO2006021618A1 Method for manufacturing pulp from classified wood material |
| 02/08/2006 | CN2756681Y Double shaft hydraulic pulping machine |
| 02/07/2006 | CA2193448C Process for the production of cellulose |
| 01/25/2006 | EP1618248A1 Impregnation of chips with an acid liquid prior to a sulphate pulping process |
| 01/25/2006 | EP1618247A1 Steam treatment of chips with the addition of an acid liquid |
| 01/19/2006 | WO2006006934A1 Method and arrangement for impregnating chips |
| 01/18/2006 | CN1721621A Process for pulping of contaminated wastepaper |
| 01/11/2006 | CN1718915A Method of manufacturing pulp using sunflower seed skin |
| 01/05/2006 | WO2006001758A1 Method and arrangement for impregnation of chips |
| 12/22/2005 | US20050279467 Adding a bleach to a stream of cellulosic pulp; pulp is retained at high temperature and pressure to increase bleaching activity but the pulp is cooled prior to discharge from the pressure vessel below the flash point; lower energy, nonviolent discharge |
| 12/22/2005 | CA2510090A1 Process for high temperature peroxide bleaching of pulp with cool discharge |
| 12/21/2005 | EP1115942A4 Arundo donax pulp, paper products, and particle board |
| 12/15/2005 | WO2005118923A1 Method for producing cellulose shaped bodies |
| 12/14/2005 | EP1604060A1 Method for producing corn stalk pulp and paper products from corn stalk pulp |
| 12/14/2005 | CN1231632C Arundo donax pulp, paper products and particle board |
| 12/08/2005 | US20050272041 isolated polynucleotide encoding Enzymatic proteins for use in food processing, paper making and recycling |
| 12/07/2005 | CN1704528A High efficiency catalyst used for pulping pretreatment process and pulping process |
| 11/29/2005 | CA2368872C Method for separating lignocellulose-containing biomass |
| 11/16/2005 | CN1697901A Method for producing corn stalk pulp and paper products from corn stalk pulp |
| 11/10/2005 | WO2005106112A1 Method and apparatus for removing gas from particulated material |
| 11/10/2005 | WO2005106111A1 A method and a device for removing gas from wood chips |
| 11/10/2005 | WO2005106110A1 Method for mechanical pulp production |
| 11/10/2005 | CA2565923A1 Method for mechanical pulp production |
| 11/10/2005 | CA2562901A1 A method and a device for removing gas from wood chips |
| 11/10/2005 | CA2562860A1 Method and apparatus for reducing the amount of sludge produced in a pulp and/or paper mill |
| 11/10/2005 | CA2528772A1 Method and apparatus for removing gas from particulated material |
| 11/03/2005 | WO2005103371A1 A process of making bamboo pulp for producing cellulose diacetate |
| 11/03/2005 | WO2005103135A1 Methods to enhance brightness of pulp and optimize use of bleaching chemicals |
| 11/03/2005 | WO2005064074A3 Process for removing interfering substances in the production of mechanical pulp and process for producing mechanical pulp |
| 11/03/2005 | US20050241785 Method of producing mechanical pulp and the mechanical pulp thus produced |
| 11/03/2005 | CA2562026A1 Methods to enhance brightness of pulp and optimize use of bleaching chemicals |
| 10/12/2005 | CN1681992A Method of producing mechanical pulp and the mechanical pulp thus produced |
| 10/06/2005 | US20050217813 Methods to enhance brightness of pulp and optimize use of bleaching chemicals |
| 09/20/2005 | CA2179914C Production of prehydrolyzed pulp |
| 09/14/2005 | CN1668805A Method of deresinating pulp using alkyl alcohol alkoxylate surfactants |
| 09/08/2005 | US20050194482 Grooved pyramid disperger plate |
| 09/06/2005 | US6939439 Batch process for producing chemical pulp by removing and reintroducing calcium-containing spent liquor in the digester |
| 09/01/2005 | US20050189081 Eductor for the mixing includes a nozzle, an initial mixing chamber, a first diffuser, an intermediate mixing chamber and a second diffuser |
| 08/24/2005 | CN1657695A Production method of stencil tissue paper |
| 08/17/2005 | CN2718029Y Fibre dividing machine |
| 08/10/2005 | EP1561858A1 Disperger with plate having grooved pyramid teeth |
| 08/10/2005 | CN1651646A Disperger with plate having grooved pyramid teeth |
| 08/05/2005 | CA2494398A1 Grooved pyramid disperger plate |
| 08/04/2005 | US20050167059 Device and method of using explosive forces in a contained environment |
| 08/03/2005 | CN1648334A Disc type heat dispersing method and its device for paper-making process and use |
| 08/03/2005 | CN1213197C Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
| 07/28/2005 | WO2005068709A1 Improved method of de-inking paper and other cellulosic materials |
| 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 |
| 07/20/2005 | CN1643208A Method for adjusting the fibrous properties of pulp |
| 07/14/2005 | WO2005064075A1 Batch process for preparing pulp |
| 07/14/2005 | WO2005064074A2 Process for removing interfering substances in the production of mechanical pulp and process for producing mechanical pulp |
| 07/14/2005 | WO2005062892A2 Device and methodology for improved mixing of liquids and solids |
| 07/14/2005 | CA2549834A1 Process for removing interfering substances in the production of mechanical pulp and process for producing mechanical pulp |
| 07/14/2005 | CA2530704A1 Batch process for preparing pulp |
| 07/13/2005 | EP1552052A1 A method of producing mechanical pulp and the mechanical pulp thus produced |
| 07/07/2005 | US20050145349 Mixing ammonium hydroxide and/or sodium bicarbonate with hydrogen peroxide and aqueous suspension of inked cellulosic fibrous material, dislodging ink by reaction at ink particle/cellulosic fiber interfaces, removing ink particles |
| 06/29/2005 | EP1546450A1 Method of deresinating pulp using alkyl alcohol alkoxylate surfactants |
| 06/29/2005 | CN1208514C Method for separating lignocellulose-containing biomass |
| 06/16/2005 | US20050126726 Method for making Arundo donax paper product |
| 06/15/2005 | CN2704603Y Pre-heating stock bin of plywood sheets against pile-up block |
| 06/09/2005 | US20050123734 Arundo donax pulp and related methods |
| 06/09/2005 | US20050123733 Arundo donax paper product |
| 06/08/2005 | CN1624239A Pulp making method of rice wheat straw fiber raw material |
| 05/26/2005 | US20050109474 Wood material is classified according to the number of annual rings into categories representing a certain fibre dimension property; fibre length or the fibre coarseness; improved fiber quality; papermaking |
| 05/25/2005 | CN1619056A Highly pare lignin, hihg efficiency fiber separating technology |
| 05/25/2005 | CN1619055A Highly pure lignin, high efficiency fiber separating equipment system |
| 05/19/2005 | US20050103454 manufacture of cooked cellulose pulp starting with chips |
| 04/26/2005 | CA2294186C Method in connection with the pretreatment of comminuted fibrous material |
| 04/06/2005 | CN1603513A Rice and wheatgrass replacing and cooking process |
| 03/30/2005 | CN1600989A Method for fabrication food wrap paper and cultural paper by using corn stalk to make no chlorin bleached pulp |
| 03/24/2005 | US20050061464 Feeding arrangement for feeding of chips to chip bins |
| 03/24/2005 | US20050061458 Method and arrangement for impregnating chips |
| 03/23/2005 | CN1598127A Whole black liqucd large liqucd rate cercal grass cooking technology with digester |
| 03/17/2005 | WO2005024125A1 Chemimechanical desilication of nonwood plant materials |
| 03/17/2005 | US20050056390 Gelled starch compositions and methods of making gelled starch compositions |
| 03/16/2005 | CN1594728A Preparation process for high concentration black liquor in vertical kettle and products thereof |
| 03/15/2005 | CA2265649C Method and system for feeding comminuted fibrous material |
| 03/10/2005 | US20050051287 Chemimechanical desilication of nonwood plant materials |
| 03/09/2005 | CN1590640A In ball washing classifying digesting technology |
| 03/09/2005 | CN1590639A Impregnation pretreatment technology of raw material used in soda process pulp making |
| 03/03/2005 | WO2005018435A2 Thermally modified microbial-derived cellulose for in vivo implantation |