| Patents for D21C 3 - Pulping cellulose-containing materials (5,020) |
|---|
| 07/08/2004 | WO2004057101A1 Cooking aid for improving the removal of extractives in pulp production, its production and use |
| 07/07/2004 | EP1435409A2 Very low cod unbleached pulp |
| 07/07/2004 | EP1435404A1 Use of low specific gravity wood for lyocell products method |
| 07/07/2004 | EP1435403A1 Use of low specific gravity wood for lyocell products method |
| 07/06/2004 | CA2149535C Digester for continuous cooking of fibre material |
| 06/30/2004 | CN1508357A Pulping digestion agent production method |
| 06/29/2004 | CA2231313C Additive composition and process for reducing anthraquinone requirements in pulping of lignocellulosic material |
| 06/26/2004 | CA2449851A1 Very low cod unbleached pulp |
| 06/23/2004 | EP1299595A4 Method for preparing pulp from cornstalk |
| 06/22/2004 | US6752902 Preparation of chemical pulp and xylose, utilizing a direct acid hydrolysis on the pulp |
| 06/22/2004 | CA2158957C Scraper device |
| 06/20/2004 | CA2414928A1 System and method for repulping of paper products with dipolar solvents |
| 06/17/2004 | US20040112554 Cooking; reducing wood to liquid ratios; multistage; adjusting alakli concentration; extraction cycles |
| 06/16/2004 | EP1402108A4 Method for producing pulp |
| 06/16/2004 | CN1505703A Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same |
| 06/10/2004 | US20040108085 Method for separating hemicelluloses from a biomass containing hemicelluloses and biomass and hemicelluloses obtained by said method |
| 06/10/2004 | US20040108084 Method for supplying washing liquid to a process for cooking cellulose pulp |
| 06/08/2004 | CA2212318C Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances and processes for its use |
| 06/03/2004 | US20040104003 Eucalyptus biokraft pulping process |
| 06/02/2004 | EP1252388B1 Use of a compound for reducing and/or avoiding the build up of wood components |
| 06/02/2004 | EP1064082B1 Contaminant dispersants useful in recycling of treated containers |
| 05/27/2004 | WO2004044285A2 Highly refined fiber mass, process of their manufacture and products containing the fibers |
| 05/26/2004 | CN1151328C Dogstail pulp large liquor ratio circular heating replacing degestion technology |
| 05/25/2004 | US6740199 Process for digesting woodchips with a sultaine and a polyglycoside |
| 05/21/2004 | WO2004041995A1 Methods and systems for pretreatment and processing of biomass |
| 05/19/2004 | CN1150366C Partial autocausticization of alkali liquors for wood pulping processes |
| 05/19/2004 | CN1150365C Pulping and paper-making process with palm shell as raw material |
| 05/19/2004 | CN1150055C Contaminant dispersants useful in recycling of treated containers |
| 05/13/2004 | US20040089431 Method for alkaline batch cooking of fiber material |
| 05/13/2004 | US20040089430 Continuous production of pulp from wood chips; preheating chips; impregnating with liquor; high speed heating; cooling, pulping |
| 05/06/2004 | US20040086626 For use in edible products; industrial thickeners, as in paint thickeners, stain thickeners, coating thickeners |
| 05/05/2004 | CN1494624A Method for separating hemicelluloses from biomass containing hemicellulose and biomass and hemicelluloses obtained by said method |
| 04/29/2004 | US20040079498 Cooking process using hot black liquor |
| 04/27/2004 | CA2228984C Low temperature gas phase continuous digester |
| 04/21/2004 | EP1053367B1 A pulping composition and process using aminoalkoxylsilanes |
| 04/20/2004 | CA2398488C Enhancements in pulping with dissolved solids control |
| 04/15/2004 | US20040069427 Multi-stage AP mechanical pulping with refiner blow line treatment |
| 04/14/2004 | CN1488808A Digestion agent |
| 04/13/2004 | US6719878 Method for avoiding mechanical damage of pulp |
| 04/08/2004 | WO2004029356A1 Method for obtaining a fraction |
| 04/01/2004 | US20040060674 Method for measuring the percent consistency of pulp leaving a blow tank |
| 04/01/2004 | US20040060673 Solvent pulping of biomass |
| 04/01/2004 | US20040060672 Continuous cooking of cellulose pulp with improved heat economy |
| 03/31/2004 | EP1402108A1 Method for producing pulp |
| 03/31/2004 | EP1402092A1 Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same |
| 03/31/2004 | CN1143913C Method for producing cotton pulp using lateral pipe continous steaming and bleaching process |
| 03/25/2004 | WO2004025020A1 Alkaline process for the manufacturing of pulp using alkali metaborate as buffering alkali |
| 03/25/2004 | CA2497277A1 Alkaline process for the manufacturing of pulp using alkali metaborate as buffering alkali |
| 03/24/2004 | EP1399620A2 Method for delignifying lignocellulosic raw materials |
| 03/24/2004 | CN1484721A Improved kraft pulp yield by heat treatment of polysulphide liqurs generated by oxidation |
| 03/24/2004 | CN1143023C Modified cellulosic fibers and fiber webs containing these fibers |
| 03/17/2004 | EP1397550A1 Method for supplying washing liquid to a process for cooking cellulose pulp |
| 03/16/2004 | US6706876 For making fibers of a registered cellulose compound |
| 03/16/2004 | US6706237 Contacting cellulose and hemicellulose with a reducing agent and reducing the copper number |
| 03/16/2004 | US6706143 Minimizing chlorinated organics in pulp bleaching processes |
| 03/16/2004 | CA2198719C Cooking with spent liquor pretreatment of cellulose material |
| 03/16/2004 | CA2149423C Process for continuous cooking of pulp |
| 03/10/2004 | EP1395700A1 Methods to enhance pulp bleaching and delignification |
| 03/10/2004 | CN2606126Y High-boiling spirit stain apparatus for preparing cellulose and lignin |
| 03/10/2004 | CN1481462A Method for producing furfural, acetic acid and formic acid from spent pulp-cooking liquor |
| 03/10/2004 | CN1141440C Formula for paper making assistant |
| 03/09/2004 | US6702921 Methods to enhance pulp bleaching and delignification using an organic sulfide chelating agent |
| 03/04/2004 | US20040040830 Recovering, separation, distillation |
| 03/03/2004 | EP1392914A2 Method and aqueous composition for the production of improved pulp |
| 03/03/2004 | EP1392610A1 Method for inhibiting calcium salt scale |
| 03/03/2004 | EP1392609A1 Method for inhibiting calcium salt scale |
| 03/03/2004 | CN2605294Y Papermaking pulp-making apparatus by alcohol method |
| 03/02/2004 | US6699357 Fiber material and cooking liquor are introduced at top of digester and pulp is discharged from bottom via line in which pulp is maintained at same pressure level to pressurized wash; increased production in overloaded digesters |
| 03/02/2004 | CA2175666C Implementation of dissolved solids profiling |
| 02/26/2004 | WO2004016850A1 On-line pulp digester control system |
| 02/26/2004 | CA2495713A1 On-line pulp digester control system |
| 02/24/2004 | US6695950 Using selected oxidation conditions to generate aldehyde using a nitroxyl radical mediated oxidation with a limited amount of oxidant |
| 02/19/2004 | WO2004015195A1 Method of deresinating pulp using alkyl alcohol alkoxylate surfactants |
| 02/17/2004 | US6692827 Lyocell fibers having high hemicellulose content |
| 02/12/2004 | US20040028900 Aqueous solution containing base; heating controlling temperature; stirring |
| 02/12/2004 | US20040026051 Environmentally-friendly fiberline for producing bleached chemical pulp |
| 02/10/2004 | CA2266987C Method and system for feeding comminuted fibrous material |
| 02/03/2004 | US6686040 Use of thinnings and other low specific gravity wood for lyocell products |
| 02/03/2004 | US6686039 Use of thinnings and other low specific gravity wood for lyocell pulps |
| 02/03/2004 | US6685856 Use of thinnings and other low specific gravity wood for lyocell products method |
| 01/29/2004 | US20040016526 Heating wood chips in an aqueous alkaline medium in the presence of an effective deresinating amount of an alkyl alcohol alkoxylate |
| 01/29/2004 | DE10229546B4 Verfahren zum Delignifizieren lignocellulosischer Rohstoffe Delignification of lignocellulosic method for raw materials |
| 01/28/2004 | EP1383955A1 Continuous digester for cellulose pulp including method and recirculation system for such digester |
| 01/22/2004 | WO2004007834A1 A continuous process for the cooking of cellulose-besed pulp and a pulp digester applicable for the same |
| 01/22/2004 | US20040011482 Method for reducing and /or avoiding the build-up of wood components |
| 01/15/2004 | WO2004005609A1 A method and a digester for the continuous cooking of wood raw material to cellulose pulp |
| 01/15/2004 | WO2004005608A1 Solvent pulping of biomass |
| 01/07/2004 | EP1075563B1 Method for removing wax from a pulp furnish |
| 01/07/2004 | CN1133775C Biological pretreatment process of preparing chemical mechanical straw pulp |
| 01/02/2004 | EP1375734A1 Bleached, strong sulfite chemical pulp, a process for the production thereof and products derived therefrom |
| 12/31/2003 | CN1464134A Paper for keeping Tibetan scripture |
| 12/31/2003 | CN1464133A Lanting cocoon paper |
| 12/30/2003 | CA2273146C Dissolved solids control in pulp production |
| 12/30/2003 | CA2159998C Dissolved solids control in pulp production |
| 12/24/2003 | WO2003106765A1 Method and arrangement for impregnating chips |
| 12/16/2003 | US6663749 Sodium hydroxide is regenerated from sodium carbonate-containing smelts in pulp processes by autocauticization through the addition of limited amount of trisodium borate |
| 12/11/2003 | WO2003102296A1 Process for the manufacturing of cellulose pulp |
| 12/10/2003 | EP1368531A1 Method for producing furfural, acetic acid and formic acid from spent pulp-cooking liquor |
| 12/04/2003 | WO2003100166A1 Method to determine pulping yield |
| 12/04/2003 | WO2003048454A3 Papermaking process using enzyme-treated sludge, and products |