| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
|---|
| 03/14/2000 | US6036818 Pulp-dewatering roll press |
| 03/09/2000 | WO2000012810A1 Method for preparation of a fibrous stock out of herb-stemmed plants |
| 03/09/2000 | WO2000012436A1 Process for the inhibition of scale in harsh systems and novel antiscalants for same |
| 03/09/2000 | CA2340057A1 Process for the inhibition of scale in harsh systems and novel antiscalants for same |
| 03/08/2000 | EP0686216B1 Inhibition of hydrogen peroxide decomposing enzymes, e.g. catalase and peroxidase during bleaching of cellulose fibers |
| 03/08/2000 | CN1050164C Manufacture technology of sea-weed fibre |
| 03/02/2000 | WO2000011262A1 Bleaching of medium consistency pulp with ozone without high shear mixing |
| 03/02/2000 | WO2000011261A1 Method for precipitating hemicellulose onto fibres for improved yield and beatability |
| 03/02/2000 | WO1999064619A3 Novel mannanases |
| 03/01/2000 | EP0981665A1 Improved papermaking processes |
| 03/01/2000 | EP0981663A1 Outlet arrangement in a pressure vessel for the bleaching of pulp |
| 03/01/2000 | EP0981639A1 Method for producing cellulose derivatives |
| 02/29/2000 | US6030495 Method for increasing brightness in pulp paper and polymeric materials |
| 02/24/2000 | WO2000009707A1 Cellulase producing actinomycetes, cellulase produced therefrom and method of producing same |
| 02/22/2000 | US6027700 Ozone production facilities and method of their operation |
| 02/22/2000 | US6027610 Production of soft paper products from old newspaper |
| 02/17/2000 | WO2000008251A1 An improved method for bleaching pulp |
| 02/17/2000 | WO2000007806A1 Method and apparatus for feeding a mass of particulate or fibrous material |
| 02/09/2000 | EP0797703B1 Peroxide bleaching process for cellulosic and lignocellulosic material |
| 02/09/2000 | CN1244227A Lumen loading of mineral filler into cellulose fibers for papermaking |
| 02/08/2000 | US6023065 Method and apparatus for monitoring and controlling characteristics of process effluents |
| 02/08/2000 | US6022986 Manganiferous polyoxometallates, synthesis and use thereof |
| 02/02/2000 | EP0976818A1 Use of glycin-N,N-diacetic acid derivatives as biodegradable complexing agents for alkaline earth and heavy metal ions, in compact powder-, ultra compact powder- and liquid-detergentcompositions |
| 02/02/2000 | EP0975768A2 Phenolic acid esterase and use thereof |
| 02/02/2000 | EP0975740A1 Method for enhancing the activity of an enzyme, bleach composition, detergent composition and process for inhibiting dye transfer |
| 02/02/2000 | EP0975582A1 Preparation and use of iminodisuccinic acid salts |
| 02/01/2000 | US6020278 Using ionizable, swellable fibers |
| 02/01/2000 | US6020180 C. antarctica lipase and lipase variants |
| 02/01/2000 | US6019870 Process for the preparation of delignified and bleached chemical paper pulps |
| 01/26/2000 | CN1242452A Formamidinesulfinic-acid blends |
| 01/26/2000 | CN1048775C Process for preparing individualized polycarboxylic acid crosslinked fibers |
| 01/25/2000 | US6017870 From fermentation of trichoderma |
| 01/25/2000 | US6017416 A hood enclosure to cover and reduce the gaseous emissions from a pulp processing washing system while maintaining a negative internal pressure within the wash system |
| 01/19/2000 | EP0910695B1 Methods for inhibiting organic contaminant deposition in pulp and papermaking systems |
| 01/19/2000 | EP0866898A4 Improved method of softening pulp and products produced by same |
| 01/19/2000 | EP0786082B1 A method of determining the organic content in pulp and paper mill effluents |
| 01/19/2000 | CN1242060A Treatment of pulp with a chelating agent without using a bleaching tower |
| 01/18/2000 | US6015707 Treating cellulosic materials with cellulases from chrysosporium |
| 01/12/2000 | EP0971066A1 Recovery of oxygen-rich gas from ozone bleaching processes |
| 01/12/2000 | EP0970020A1 Process for treating wastewater |
| 01/12/2000 | CN1048226C Method and plant for producing hydrogen peroxide |
| 01/05/2000 | EP0969141A1 Process for producing satinated paper |
| 01/05/2000 | EP0968328A1 Bleaching and delignifying cellulose using caroate/caro's acid and production of same |
| 01/05/2000 | EP0775165B1 Dadmac/vinyl trialkoxysilane copolymers and their use in wastewater treatment |
| 01/05/2000 | EP0627029B1 Pulp bleaching apparatus and method |
| 01/05/2000 | DE19828952A1 Verfahren zur Erzeugung von satiniertem Papier Process for the production of satin paper |
| 01/04/2000 | US6010892 Animal feed |
| 01/04/2000 | US6010594 Controlling consistecy of cellulose pulp |
| 12/29/1999 | EP0966666A1 Method and apparatus for monitoring and controlling characteristics of process effluents |
| 12/29/1999 | CN1240008A Multicomponent system for modifying, decomposing or bleaching lignin, lignin-containing material or similar substances and process for using the same |
| 12/28/1999 | US6008176 As textile detergent builders in powder detergent formulations and as calcium sequestrants in oral hygiene products |
| 12/28/1999 | US6007680 Apparatus for safely conducting pressurized peroxide bleaching |
| 12/28/1999 | US6007678 Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof |
| 12/28/1999 | US6007583 Textile detergents and bleaches for surfaces, toilet, dishwasher and denture cleaners using a peroxide bleach |
| 12/28/1999 | US6006554 Two stage counter current drum washer |
| 12/23/1999 | WO1999066120A1 Pulp bleaching process with reduced barium scaling |
| 12/22/1999 | EP0750698B1 Apparatus for fluffing high consistency wood pulp |
| 12/22/1999 | CN1047640C Method of producing sulphate pulp through steamed and pulverized cellulose fiber |
| 12/21/1999 | US6005141 Use of glycine-N,N-diacetic acid derivatives as biodegradable complexing agents for alkaline earth metal ions and heavy metal ions and process for the preparation thereof |
| 12/21/1999 | US6004364 Separation device |
| 12/16/1999 | WO1999064619A2 Novel mannanases |
| 12/15/1999 | EP0963482A1 Compositions and methods for inhibiting organic contaminant deposition in pulp and papermaking systems |
| 12/15/1999 | EP0723475B1 Method and device for mixing of a fluid into a pulp-suspension |
| 12/15/1999 | EP0692044B1 Method for reusing spent gas from an ozone bleaching reactor |
| 12/15/1999 | CN1238818A Production of soft paper products from coarse cellulosic fibers |
| 12/15/1999 | CN1238817A Method for controlling oxygen delignification of pulp |
| 12/15/1999 | CN1238816A Method of producing pulp using single-stage cooking with formic acid and washing with performic acid |
| 12/15/1999 | CN1047418C Pulp bleaching reactor and its method |
| 12/09/1999 | WO1999063150A1 Two stage counter current drum washer |
| 12/09/1999 | WO1999063149A1 Method for selectively delignifying lignocellulosic materials |
| 12/09/1999 | CA2332897A1 Method for selectively delignifying lignocellulosic materials |
| 12/09/1999 | CA2298665A1 Two stage counter current drum washer |
| 12/08/1999 | EP0961926A1 A method and an arrangement for measuring the amount/activity of catalase before or in connection with bleaching of preferably cellulose fibres included in a pulp suspension |
| 12/08/1999 | EP0961851A1 Process for producing fibrous materials with improved properties |
| 12/08/1999 | CN2352565Y Spiral net belt type washing pulp machine |
| 12/07/1999 | US5998645 Bleaching-active metal complexes |
| 12/07/1999 | US5998511 Crosslinked with polymaleic acid |
| 12/07/1999 | US5998197 The invention is judged of considerable importance in reducing the substantial amount of downtime caused by pitch deposits and accumulations in the pulp and paper and other industries which convert pulpwoods. |
| 12/07/1999 | US5997689 Bleaching |
| 12/02/1999 | WO1999061518A1 Fibrous absorbent material and methods of making the same |
| 12/01/1999 | EP0960236A1 Lumen loading of mineral filler into cellulose fibers for papermaking |
| 12/01/1999 | EP0960235A1 Oxygen delignification process of pulp |
| 12/01/1999 | CN1237207A Chrysosporium cellulase and methods of use |
| 12/01/1999 | CN1237204A High molecular weight trichoderma cellulase |
| 12/01/1999 | CN1237156A Sulphinic acid derivatives, method for producing them, and their use |
| 11/30/1999 | CA2009622C Process for reducing the pitch content in wood pulp |
| 11/25/1999 | WO1999060201A2 Peroxide, oxygen, and peroxide/oxygen brightening of chemical and mixed waste pulps |
| 11/25/1999 | WO1999060027A1 Process for preparing a high purity chemical-free microcrystalline cellulose from a chemically produced cellulose |
| 11/25/1999 | DE19833629A1 Free-flowing, non-scale forming formamidine-sulfinic acid mixtures for use in reductive bleaches in the paper and textiles industries |
| 11/24/1999 | EP0959175A1 Compositions comprisisng formamidinesulfinic acid |
| 11/24/1999 | CN1046775C Dye transfer inhibition |
| 11/23/1999 | US5989392 Adding to papermaking pulp a crosslinked polydiallyldimethylammonium chloride antideposit agent |
| 11/23/1999 | US5989388 Method for ozone bleaching of high consistency pulp in two stages |
| 11/20/1999 | CA2272449A1 Formamidinesulfinic-acid blends ii |
| 11/18/1999 | WO1999058759A1 Process for controlling odor in paper and paperboard |
| 11/18/1999 | WO1999058634A1 Metal ligand containing bleaching compositions |
| 11/18/1999 | WO1999058574A1 Chelating agents |
| 11/18/1999 | CA2336887A1 Process for controlling odor in paper and paperboard |
| 11/17/1999 | EP0957199A1 Process for bleaching paper pulp |
| 11/17/1999 | EP0956388A1 Feeding of washing liquid in a pulp washer |