| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 12/08/2004 | CN1179088C Fibrous structures including fiber bundle and debonding agent |
| 12/08/2004 | CN1178753C Apparatus for cleaning suspension, preferably fibre mass suspension |
| 12/07/2004 | CA2160430C Method of treating cellulose pulps |
| 12/02/2004 | WO2004103412A2 Superabsorbent cellulosic fiber and method of making same |
| 12/02/2004 | US20040241350 Pulp fibers are covalently crosslinked before being made into paper; enables printing on both faces of a paper without any special surface coating by suppressing generation of curl and cockle of the paper after printing, when using an ink jet recording system or an electrophotographic process |
| 12/02/2004 | US20040238140 Regulating electrical potential without effecting pH; runnability, corrosion resistance; reduced gas formation; consistency measurement reliability; fiber retention; improving product strength and formation |
| 12/02/2004 | CA2765226A1 Superabsorbent cellulosic fiber and method of making same |
| 12/01/2004 | CN1550548A Modification of xylanase to improve thermophilicity, alkophilicity and thermostability |
| 12/01/2004 | CN1177971C Protein and polymer as pith and stickies control agent in pulp and papermaking processes |
| 12/01/2004 | CN1177933C Chrysosporium cellulase and methods of use |
| 11/30/2004 | US6824646 Utilizing a waste water delivered from an enzyme treatment step as a liquid medium of an alkali-oxygen bleaching step; hemicellulose treatment returned to a preceeding alkali-oxygen bleaching step, without deteriorating the bleaching |
| 11/30/2004 | US6824645 Oxidized cellulose-containing fibrous materials and products made therefrom |
| 11/30/2004 | CA2185808C Method for complex treatment of pulp in conjunction with a chlorine dioxide stage |
| 11/25/2004 | WO2004101889A2 Use of hemicellulase composition in mechanical pulp production |
| 11/25/2004 | US20040234760 Grafted and crosslinked with ethylenically unsaturated monomer; does not form soft, gelatinous masses when swollen with liquid |
| 11/25/2004 | US20040231816 Method for controlling pitch and stickies deposition |
| 11/25/2004 | US20040231811 Method of producing bleached thermomechanical pulp (tmp) or bleached chemithermomechanical pulp (ctmp) |
| 11/24/2004 | EP1478803A2 Method for ozone treatment of a liquid phase containing solid particles |
| 11/24/2004 | EP1478802A2 Method for ozone treatment of used paper |
| 11/23/2004 | US6821383 Preparation of modified fluff pulp, fluff pulp products and use thereof |
| 11/23/2004 | CA2383464C Hypochlorite free method for preparation of stable carboxylated carbohydrate products |
| 11/18/2004 | WO2004099492A2 Method for bleaching fibrous materials |
| 11/18/2004 | US20040226677 Process and a fluffer device for treatment of a fiber stock suspension |
| 11/18/2004 | US20040226672 using cutlinase, lipases in manufacturing paper |
| 11/18/2004 | US20040226671 production of texturized microcrystalline cellulose from raw pulp material by hydrolyzing cellulosic material with mineral acid, defibrillation of intermediate; can be used for surface treatment of paper or paper board or as starting material for production of paper or paperboard |
| 11/18/2004 | DE10320618A1 Verfahren zum Bleichen von Faserstoffen A process for bleaching of pulp |
| 11/17/2004 | EP0882152B1 Process for bleaching of a high yield pulp |
| 11/17/2004 | CN1176269C Pulp bleaching process |
| 11/16/2004 | US6818099 Raw material for printing paper, method to produce it and printing paper |
| 11/11/2004 | US20040224588 Absorbent structures of chemically treated cellulose fibers |
| 11/10/2004 | CN1545586A Seal at press rollers |
| 11/10/2004 | CN1175140C Method and system for conveying shredded pulp to ozone reactor |
| 11/04/2004 | DE10317526A1 Delignifying fibrous material, e.g. wood pulp, comprises contacting material with an active oxygen source and catalyst with iminium, oxaziridinium or sulfonylimine structure |
| 11/03/2004 | EP0963482B1 Method for inhibiting organic contaminant depositions in pulp and papermaking system |
| 11/03/2004 | CN1174144C Process for producing cellulose pulp and fertiliser containing potassium |
| 11/02/2004 | US6811879 Flowable and meterable densified fiber flake |
| 10/28/2004 | US20040211533 reductive decoloration of paper using aqueous solutions comprising sodium borohydride, sodium hydroxide and sodium bisulfite |
| 10/27/2004 | EP1469937A1 Mixing device |
| 10/26/2004 | US6808596 Pump, mixer; low- and high pressure stages; adding oxygen; pipe loop arranged to extend in horizontal plane |
| 10/21/2004 | WO2004090225A1 Purification of alkaline washing liquid |
| 10/21/2004 | US20040206464 acidification of cellulose; hemicellulose coatings; high strength, dustless |
| 10/21/2004 | US20040206463 Method of making a modified unbleached pulp for lyocell products |
| 10/20/2004 | CN2649630Y Replaceable pulp-extruding spiral device |
| 10/14/2004 | WO2004088035A1 Process for producing a fibrous composition |
| 10/14/2004 | US20040200589 pulping a lignocellulosic material in caustic sulfide comprising polysulfide and anthraquinone to provide a first brownstock, treating this brownstock with oxygen to provide a second brownstock; and bleaching the second brownstock; hemicellulose content >17 weight percent; strength; efficiency |
| 10/14/2004 | US20040200588 detoxification of oxygen derivative toxins produced by catalase by adding a aqueous solution of organic peracid(s)-based biocides and aqueous solution of hydroylamine-based chelating agent(s) for a synergistic effect; less biofilm build-up in the deinking millharbor; brightening; efficiency |
| 10/14/2004 | US20040200587 A bleached, chemical pulp having a hemicellulose content >17 weight % (8% caustic solubility test (TAPPIT-235-CM-00)); sheets of high tensile strengths - significantly greater than that of conventional Kraft chemical pulp fibers; tissues; towels; chemithermomechanical pulp; energy efficient |
| 10/14/2004 | US20040200586 Four stage alkaline peroxide mechanical pulping |
| 10/14/2004 | CA2518565A1 Process for producing a fibrous composition |
| 10/13/2004 | EP1467017A1 Method of controlling microorganisms in hydrogen peroxide pulp bleaching processes |
| 10/13/2004 | EP1305469B1 New process for pre-treating cellulosic fibers and cellulosic fiber blends |
| 10/13/2004 | EP1230374A4 Modification of polysaccharide containing materials |
| 10/07/2004 | WO2004085735A1 Methods for bleaching of cellulosic materials |
| 10/06/2004 | EP1392915A4 Rapid triglyceride assay for use in pulp pitch control |
| 10/06/2004 | EP1238140B1 Cellulose fiber-based compositions and their method of manufacture |
| 10/06/2004 | CN1535343A Bulky pulp, method for production thereof and converted paper or multi-ply paper using bulky pulp |
| 10/06/2004 | CN1534134A Chlorineless bleaching paper pulp producing process using pith removed corn stalk as raw material |
| 09/30/2004 | WO2004083520A1 Process for bio-bleaching of kraft pulp using bacterial consortia |
| 09/30/2004 | WO2004083518A2 Cross-linked fiber in sheet form and method of making |
| 09/30/2004 | US20040188043 contacting substantially lignin-free pulp or paper with an aqueous reductive bleaching solution comprising hydroxymethane sulfinic acid |
| 09/30/2004 | CA2518145A1 Cross-linked fiber in sheet form and method of making |
| 09/29/2004 | EP1462524A1 Cellulase preparations containing reducing agent and method of processing fiber |
| 09/29/2004 | EP1461499A1 An apparatus and a method for controlling the alkalinity and ph of an industrial process |
| 09/29/2004 | EP1337315B1 Method for the treatment of waste gas from a cellulose plant |
| 09/29/2004 | CN1533459A Four stage alkaline peroxide mechanical pulping |
| 09/29/2004 | CN1168596C Method and apparatus for feeding mass of particulate or fibrous material |
| 09/28/2004 | US6797113 Low specific gravity wood from thinning operations, for example, will produce a lower brownstock viscosity for a given kappa number target. a differential of 200-cp falling ball pulp viscosity has been detected from kraft cooks of low |
| 09/22/2004 | EP1246965B1 Method for eliminating detrimental substances in a process liquid |
| 09/22/2004 | EP1161592B1 Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
| 09/22/2004 | CN1531615A Process and apparatus for removal of scale build-up |
| 09/22/2004 | CN1530492A Cellulose pulp board for sugar treatment |
| 09/21/2004 | US6793771 Ozone bleaching of low consistency pulp |
| 09/21/2004 | CA2116260C Method of inhibiting calcium oxalate scale deposition |
| 09/16/2004 | WO2004079087A1 Bleaching of cellulose pulp in a first chlorine dioxide bleaching step |
| 09/16/2004 | US20040177936 Dried singulated cellulose pulp fibers |
| 09/16/2004 | US20040177935 to provide cross-linked cellulosic fiber having long shelf-life and high stability; absorbent articles |
| 09/15/2004 | EP1457184A1 Saccharide treated cellulose pulp sheets |
| 09/15/2004 | EP1456463A2 Process for modifying wood pulp fiber morphology |
| 09/15/2004 | CN2641100Y Pulp squeezing washer |
| 09/15/2004 | CN2641099Y Rough pulp sundries separator for paper making |
| 09/14/2004 | US6789285 Pulp washing method and plant |
| 09/10/2004 | WO2003061550A3 Novel catalytic activities of oxidoreductases for oxidation and/or bleaching |
| 09/09/2004 | US20040173328 Bleaching and brightness stabilization of lignocellulosic materials with water-soluble phosphines or phosphonium compounds |
| 09/08/2004 | EP1454010A1 Method and system for the treatment of pulp prior to ozone bleaching |
| 09/08/2004 | EP0975740B1 Method for enhancing the activity of an enzyme, bleach composition, detergent composition and process for inhibiting dye transfer |
| 09/01/2004 | CN2637537Y Wear resistant high efficiency paper making pulp pressing device |
| 08/31/2004 | US6782637 System for making dried singulated crosslinked cellulose pulp fibers |
| 08/31/2004 | CA2322439C Cotton linter tissue products and method for preparing same |
| 08/26/2004 | US20040163779 Using aqueous ethanol solvent; brightness |
| 08/25/2004 | EP1449960A2 Production of soft paper products from coarse cellulosic fibers |
| 08/25/2004 | EP1448941A2 Method and device for compressing ozone-containing gas for an ozone pulp bleaching process |
| 08/25/2004 | EP1448851A1 Method for manufacturing filler containing chemical pulp |
| 08/25/2004 | EP1448848A1 Oxidizing enzymes in the manufacture of paper materials |
| 08/25/2004 | EP1448847A2 Lignocellulose product |
| 08/25/2004 | EP1409632A4 Method of making a composition, a product from such method, and the use thereof in removing or dissolving a contaminant from an environment |
| 08/25/2004 | EP1268923B1 Process for reducing sticky contaminants in stock systems containing waste paper and in coated broke |
| 08/25/2004 | EP1109750B1 Process and product for the inhibition of scale in harsh systems |
| 08/21/2004 | CA2457820A1 Method for hydrogen peroxide bleaching of pulp |
| 08/19/2004 | WO2004070110A1 Bleaching and brightness stabilization of lignocellulosic materials with water-soluble phosphines or phosphonium compounds |
| 08/18/2004 | CN1522325A Method for producing cellulose fiber having improved biostability |