| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 02/18/1997 | US5603804 Process for production of linerboard and corrugated medium |
| 02/13/1997 | WO1997005327A1 Method and apparatus for bleaching pulp with a gaseous bleaching reagent |
| 02/13/1997 | WO1997005324A2 Method and apparatus for bleaching high consistency pulp with a gaseous bleaching reagent |
| 02/13/1997 | CA2227778A1 Method and apparatus for bleaching high consistency pulp with a gaseous bleaching reagent |
| 02/13/1997 | CA2227690A1 Method and apparatus for bleaching pulp with a gaseous bleaching reagent |
| 02/12/1997 | EP0757732A1 Oxygen bleaching of cellulosic pulps |
| 02/12/1997 | EP0757661A1 Method and plant for producing hydrogen peroxide |
| 02/12/1997 | CN1142858A Apparatus for washing of pulp |
| 02/12/1997 | CN1142555A Prescription and process for intensively bleaching pulp using singlet state oxygen in alkali bleaching stage of multi-stage process |
| 02/11/1997 | CA2019712C Method and device for treatment of a fibrous material-fluid mixture |
| 02/06/1997 | WO1997004165A1 Method and device for treating a pulp suspension |
| 02/06/1997 | WO1997004164A1 Method for the deinking of printed waste paper by a washing process and product produced therefrom |
| 02/06/1997 | WO1997004162A2 Wet-laid absorbent pulp sheet suitable for immediate conversion into an absorbent product |
| 02/06/1997 | DE19528843A1 Verfahren zur Stabilisierung von alkalischen peroxidenthaltenden Bleichflotten für die Bleiche von Zellstoffen und anderen Faserstoffen A method of stabilizing alkaline bleaching liquors peroxidenthaltenden for the bleaching of pulp and other fibers |
| 02/05/1997 | EP0756650A1 Suspension-treating device |
| 02/05/1997 | CN1142255A Multicomponent system for modifying decomposing or bleaching lignin, lignin-containing materials or similar substances and method of using this system |
| 02/04/1997 | US5599426 Conveying endless belt-supported spray-washed pulp slurry mat over spaced rolls to separate debris and dislodge slurry; recycling wastes |
| 02/04/1997 | US5599296 Apparatus and method of delivery of gas-supersaturated liquids |
| 01/30/1997 | WO1997003248A1 Auxiliary paper-producing aid with recurring succinyl units |
| 01/30/1997 | WO1997002844A1 Absorbent material, absorbent body made of the material, and method for the preparation of the material |
| 01/30/1997 | CA2226954A1 Auxiliary paper-producing aid with recurring succinyl units |
| 01/30/1997 | CA2226218A1 Absorbent material, absorbent body made of the material, and method for the preparation of the material |
| 01/29/1997 | EP0755468A1 Preparation process of paper for increasing filler contents and enhancing scott internal bond strength |
| 01/28/1997 | US5597490 Flocculation |
| 01/28/1997 | US5597448 Adding to pulp slurry of papermaking systems |
| 01/23/1997 | WO1996037604A3 Enzyme and microorganism degrading rhamnogalacturonane ii |
| 01/22/1997 | EP0754941A1 Apparatus for determining properties of slurry materials and sludge treating process |
| 01/22/1997 | EP0754258A1 Method for complex treatment of pulp in conjunction with a chlorine dioxide stage |
| 01/21/1997 | CA2181523A1 Process for bleaching kraft pulp |
| 01/16/1997 | WO1997001667A1 Bleaching of lignocellulosic pulp with ozone and peracid |
| 01/16/1997 | DE19525365A1 Papierhilfsmittel mit wiederkehrenden Succinyleinheiten Paper auxiliaries with recurring succinyl |
| 01/15/1997 | EP0753057A1 Alkaline bacillus amylase |
| 01/15/1997 | CN1140420A Apparatus for mixing first fluid into second fluid |
| 01/15/1997 | CN1033826C Pitch control |
| 01/14/1997 | US5593543 Process for repulping wet strength paper |
| 01/14/1997 | CA2068709C Oxygen color stripping in secondary fiber recovery |
| 01/14/1997 | CA2068708C Oxygen detackification in secondary fiber recovery |
| 01/09/1997 | WO1997001074A1 Method and apparatus for treating material which conducts heat poorly |
| 01/09/1997 | WO1997000998A1 Method and apparatus for treating pulp in an indirect heat exchanger in connection with bleaching |
| 01/09/1997 | WO1997000997A1 Method and apparatus for treating pulp in an indirect heat exchanger after pulping |
| 01/08/1997 | EP0752028A1 Cellulosic products using high-bulk cellulosic fibers |
| 01/08/1997 | EP0752024A1 Heat treated high lignin content cellulosic fibers |
| 01/08/1997 | EP0659222A4 Oxidative bleaching of wood pulp by vanadium-substituted polyoxometalates. |
| 01/07/1997 | US5591336 Apparatus for dewatering and or washing papermaking stock |
| 01/07/1997 | US5591308 Wood pulp reactor |
| 01/07/1997 | US5591304 Delignifying brownstock with hemicellulases |
| 01/07/1997 | CA2005687C Filter deck assembly sliding seal |
| 01/03/1997 | WO1997000354A1 Process for preparing reduced odor and improved brightness individualized, polycarboxylic acid crosslinked fibers |
| 01/03/1997 | WO1997000272A1 Polymers, their preparation and their use |
| 01/03/1997 | CA2224329A1 Polymers, their production and use |
| 01/02/1997 | EP0750698A1 Apparatus for fluffing high consistency wood pulp |
| 01/02/1997 | EP0750693A1 Preparing individualized polycarboxylic acid crosslinked cellulosic fibers |
| 01/01/1997 | CN1139466A Method of high yield paper pulp bleaching using hydrogen peroxide |
| 01/01/1997 | CN1139465A Diffuser |
| 12/31/1996 | US5589075 Use of silicon containing polyelectrolytes in wastewater treatment |
| 12/31/1996 | US5589032 Bleaching liquor for bleaching wood pulp with peroxide |
| 12/31/1996 | US5589031 Chlorine dioxide bleaching of chemical pulp |
| 12/27/1996 | WO1996041987A2 High pressure gas exchanger |
| 12/27/1996 | WO1996041917A1 Peroxide bleaching of pulp |
| 12/27/1996 | WO1996041916A1 Drum supported by support rollers for washing fibre material |
| 12/27/1996 | EP0670928B1 Process for delignification of lignocellulose-containing pulp |
| 12/27/1996 | CA2224101A1 High pressure gas exchanger |
| 12/27/1996 | CA2179140A1 Production of high brightness cedar mechanical pulp |
| 12/24/1996 | US5587049 Low temperature; recirculation of liquids |
| 12/22/1996 | CA2179700A1 Method and apparatus for treating pulp |
| 12/19/1996 | WO1996040334A1 Delivery of oxygen-supersaturated physiologic solutions |
| 12/19/1996 | DE19521695A1 Polymerisate, deren Herstellung und Verwendung Polymers, their preparation and use |
| 12/19/1996 | CA2224006A1 Delivery of oxygen-supersaturated physiologic solutions |
| 12/18/1996 | EP0748412A1 Impact of temperature and alkali charge on pulp brightness |
| 12/17/1996 | CA2089041C Bleaching pulp with chloric acid |
| 12/11/1996 | EP0747343A1 Polycarboxylic monomer, polymer of the same, and detergent composition containing the polymer |
| 12/11/1996 | EP0747108A2 Oxygen production by ion transport membranes with work recovery |
| 12/11/1996 | EP0746650A1 Pulping of fibrous plant materials and recovery of resultant by-products |
| 12/11/1996 | CN1137812A Method and apparatus for implementing optimum reaction of fluffing high consistency wood pulp and gas bleaching agant |
| 12/11/1996 | CN1137593A 低温漂白 Low temperature bleaching |
| 12/10/1996 | US5582681 Production of soft paper products from old newspaper |
| 12/04/1996 | EP0745154A1 Multicomponent system for modifying, decomposing or bleaching lignin, lignin-containing materials or similar substances and method of using this system |
| 12/03/1996 | US5580485 Iron-complexes; oxidation catalysts |
| 12/03/1996 | US5580422 Brightening color dyed wastepaper with a bleaching agent and a quaternary compound |
| 12/03/1996 | CA2073862C Bleaching of lignocellulosic material with dioxiranes |
| 11/28/1996 | WO1996037654A1 Bleaching of cellulose pulp in one and the same stage with a complexing agent, a molybdenum containing substance and an oxidative bleaching agent |
| 11/28/1996 | WO1996037604A2 Enzyme and microorganism degrading rhamnogalacturonane ii |
| 11/28/1996 | CA2222193A1 Enzyme and microorganism degrading rhamnogalacturonane ii |
| 11/27/1996 | EP0743876A1 Apparatus for mixing a first fluid into a second fluid |
| 11/27/1996 | CN1136493A Method for bleaching micro powdered plant powder |
| 11/26/1996 | CA2060503C Method and device for separating a fibre suspension |
| 11/21/1996 | WO1996036766A1 Fiber suspension thickener having improved discharge consistency |
| 11/21/1996 | WO1996036765A1 A method for treating wood with bacteria |
| 11/21/1996 | WO1996036750A1 Method for preparation of pigmented paper fibers and fiber products |
| 11/21/1996 | CA2219768A1 A method for treating wood with bacteria |
| 11/21/1996 | CA2218862A1 Fiber suspension thickener having improved discharge consistency |
| 11/20/1996 | EP0742855A1 Apparatus for treating pulp |
| 11/20/1996 | CN1136335A Methanol recovery |
| 11/19/1996 | US5575890 Method for selectively increasing the sulfide ion concentration and sulfidity of kraft cooking liquor during kraft cooking of wood |
| 11/19/1996 | CA2093182C Method of bleaching de-inked pulp |
| 11/14/1996 | WO1996035731A1 Dadmac/vinyl trialkoxysilane copolymers and their use in wastewater treatment |
| 11/14/1996 | CA2194295A1 Dadmac/vinyl trialkoxysilane copolymers and their use in wastewater treatment |
| 11/13/1996 | EP0741817A1 Method and apparatus for treating recycled pulp |
| 11/13/1996 | EP0741816A1 Diffuser |
| 11/12/1996 | US5574088 Increasing the resistance of fiber material to oxidizing agents |