| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 10/25/1994 | CA1332665C Process and agent for bleaching wood pulp |
| 10/25/1994 | CA1332653C Flame retardant vegetable fiber material and the process of the same |
| 10/19/1994 | EP0499618B1 Hydrolysis of resin in pulp |
| 10/18/1994 | US5356517 Hydrolysis of resin in pulp with an enzyme and a peroxide |
| 10/13/1994 | WO1994023123A1 Method for reusing spent gas from an ozone bleaching reactor |
| 10/13/1994 | WO1994023122A1 Method of treating process water |
| 10/13/1994 | WO1994023121A1 Process for crosslinking of cellulosic fibers |
| 10/13/1994 | WO1994023118A2 Bleaching recycled pulp with a reductive-oxidative sequence |
| 10/13/1994 | WO1994023117A2 Bleaching recycled pulp with ozone and hydrogen peroxide |
| 10/13/1994 | CA2160123A1 Method of treating process water |
| 10/13/1994 | CA2159444A1 Method for reusing spent gas from an ozone bleaching reactor |
| 10/13/1994 | CA2158142A1 Process for crosslinking of cellulosic fibers |
| 10/12/1994 | EP0539381A4 Pulp alkali addition process for high consistency oxygen delignification. |
| 10/12/1994 | EP0515530B1 Apparatus for filtering liquids |
| 10/11/1994 | US5354423 Delignification by impregnating with water and dioxane to increase the availability of lignin to degradation without swelling the cellulose |
| 10/11/1994 | CA1332262C Bleaching with ozone-chlorine mixtures |
| 10/05/1994 | EP0682695A4 Oxidising agents. |
| 10/05/1994 | EP0618326A1 Hydrolysis of resin in pulp |
| 10/04/1994 | US5352332 Process for recycling bleach plant filtrate |
| 09/29/1994 | WO1994021857A1 Treatment of bleach plant effluents |
| 09/29/1994 | WO1994021856A1 Improved ozone/peracid process for delignifying a lignocellulosic material |
| 09/29/1994 | WO1994021854A1 Pitch degradation with white rot fungi |
| 09/29/1994 | CA2158563A1 Improved ozone/peracid process for delignifying a lignocellulosic material |
| 09/29/1994 | CA2152958A1 Pitch degradation with white rot fungi |
| 09/29/1994 | CA2134882A1 Treatment of bleach plant effluents |
| 09/28/1994 | EP0553141B1 Method for preserving the mechanical strength properties of chemical paper pulp |
| 09/28/1994 | CN1092833A Mixer for providing contact between pulp and a gaseous bleaching reagent |
| 09/28/1994 | CN1092832A A method of producing mechanical and chemi-mechanical pulp |
| 09/27/1994 | US5350493 Oxygen delignification of old corrugated containers |
| 09/21/1994 | EP0615564A1 Method and enzymatic preparation for treatment of cellulose pulps |
| 09/21/1994 | EP0484398B1 Cell wall loading of never-dried pulp fibers |
| 09/20/1994 | CA1332023C Process for cooking and bleaching pulp |
| 09/15/1994 | WO1994020674A1 Chemical paper pulp delignification method |
| 09/15/1994 | WO1994020673A1 Method of bleaching pulp with chlorine-free chemicals |
| 09/15/1994 | WO1994020672A1 Process for bleaching pulp |
| 09/15/1994 | CA2157291A1 Process for the delignification of a chemical pulp |
| 09/15/1994 | CA2150810A1 Process for bleaching pulp |
| 09/14/1994 | EP0553196B1 Hydrolysis of resin in pulp |
| 09/14/1994 | EP0479789B1 Method of and apparatus for treating pulp |
| 09/13/1994 | US5346588 Process for the chlorine-free bleaching of cellulosic materials with ozone |
| 09/11/1994 | CA2113937A1 Method for inhibiting the deposition of organic contaminants in pulp and papermaking processes |
| 09/01/1994 | WO1994019534A1 Wood pulp processing apparatus and method |
| 08/30/1994 | US5342542 Process for increasing the bleaching efficiency of persalts by using a partially acetylated sucrose as a bleach activator |
| 08/30/1994 | CA1331708C Apparatus for thickening pulp and paper stock |
| 08/24/1994 | EP0611436A1 Heating arrangement. |
| 08/24/1994 | EP0478762B1 Method and device for separating a fibre suspension |
| 08/24/1994 | CN1091173A Method of treating papermaking fibers for making tissue |
| 08/18/1994 | WO1994018386A1 Improved process and composition for delignifying a lignocellulosic material |
| 08/18/1994 | WO1994018385A1 Process for crosslinking of cellulosic fibers |
| 08/18/1994 | WO1994018299A1 Oxidising agents |
| 08/18/1994 | WO1994018298A1 Oxidising agents |
| 08/18/1994 | WO1994018297A1 Oxidising agents |
| 08/18/1994 | WO1994017893A1 Multistage disc filter |
| 08/18/1994 | CA2155652A1 Multistage disc filter |
| 08/18/1994 | CA2155636A1 Oxidising agents |
| 08/18/1994 | CA2155633A1 Oxidising agents |
| 08/18/1994 | CA2155632A1 Oxidising agents |
| 08/18/1994 | CA2154778A1 Improved process and composition for delignifying a lignocellulosic material |
| 08/17/1994 | EP0610371A1 Thermostable xylanase from a strain of rhodothermus marinus |
| 08/17/1994 | EP0610291A1 Method and apparatus for mixing gas into a fiber suspension and a bleaching process applying said method |
| 08/17/1994 | EP0454757B1 A method in the manufacture of cellulose pulp |
| 08/17/1994 | CN1090902A Pitch control |
| 08/17/1994 | CN1090901A Method for producing non-burning safety powder |
| 08/16/1994 | US5338403 Adding lipase or esterase with a hydrosulfite yields increased brightness and reduction of triglyceride content |
| 08/16/1994 | US5338401 Improved processing to yield recycled paper products |
| 08/12/1994 | CA2089311A1 Minimizing gas separation in a mixer outlet |
| 08/10/1994 | EP0609276A1 Oxidation process |
| 08/10/1994 | CN1090617A Paper, paper plate and cellulose plate pulping method |
| 08/04/1994 | WO1994017239A1 Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent |
| 08/04/1994 | WO1994017238A1 Ozone reactor process control |
| 08/04/1994 | CA2154076A1 Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent |
| 08/03/1994 | EP0608687A1 Process for improving the whiteness of chlorine-free bleached pulp |
| 08/02/1994 | CA1331075C Process for manufacturing paper pulp for fiduciary use |
| 07/27/1994 | EP0607448A1 Process for producing thiourea dioxide and bleaching of papermaking pulp with thiourea dioxide produced thereby |
| 07/27/1994 | EP0607243A1 Method for enzymatic treatment of lignocellulosic materials, in particular cellulose pulps |
| 07/26/1994 | US5332474 Conversion of pulp and paper mill waste solids to a papermaking filler product |
| 07/26/1994 | US5332471 Dye stripping by oxygen in secondary fiber recovery |
| 07/21/1994 | WO1994016139A1 A method of producing mechanical and chemi-mechanical pulp |
| 07/20/1994 | EP0606250A1 A method and device for treating fibre material. |
| 07/20/1994 | CN1089578A Method of treating process water |
| 07/19/1994 | US5330646 Apparatus for filtering liquids |
| 07/19/1994 | US5330620 Bleaching pulp with chloric acid |
| 07/13/1994 | EP0605565A1 A method in ozone bleaching of pulp. |
| 07/13/1994 | EP0605449A1 Defoamer composition. |
| 07/13/1994 | EP0497794B1 A microperoxidase preparation containing a hemopeptide as an active component |
| 07/12/1994 | US5328564 Eliminates use of chlorinated solvents |
| 07/07/1994 | WO1994015020A1 Chlorine dioxide generation for a zero discharge pulp mill |
| 07/07/1994 | WO1994015018A1 Method and apparatus for regulating wood pulp bleaching |
| 07/07/1994 | WO1994015017A1 Pulp and bleaching reagent mixer and method |
| 07/07/1994 | WO1994015016A1 Improved pulp bleaching apparatus and method |
| 07/07/1994 | WO1994014965A1 Cloning and expression of xylanase b |
| 07/07/1994 | CA2151814A1 Pulp and bleach reagent mixer and method |
| 07/07/1994 | CA2151813A1 Method and apparatus for regulating wood pulp bleaching |
| 07/07/1994 | CA2151812A1 Improved pulp bleaching apparatus and method |
| 07/07/1994 | CA2151172A1 Chlorine dioxide generation for a zero discharge pulp mill |
| 07/07/1994 | CA2129992A1 Cloning and expression of xylanase b |
| 07/05/1994 | CA1330543C Multiscreen pressure diffuser |
| 06/29/1994 | EP0604088A1 Elimination of sulfur dioxide formation in refiner bleaching |
| 06/28/1994 | US5324390 Dye stripping by oxygen and peroxide in secondary fiber recovery |
| 06/23/1994 | WO1994013880A1 Apparatus for filtering suspensions |