Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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05/24/1995 | CA2135742A1 Process for high-ph metal ion chelation in pulps |
05/18/1995 | WO1995013421A1 Method of high yield paper pulp bleaching using hydrogen peroxide |
05/18/1995 | WO1995013420A1 Method of bleaching chemical paper pulp |
05/18/1995 | WO1995013419A1 Implementation of dissolved solids profiling |
05/18/1995 | CA2176246A1 Method of bleaching chemical paper pulp |
05/18/1995 | CA2176030A1 Method of high yield paper pulp bleaching using hydrogen peroxide |
05/17/1995 | EP0652991A1 Zero discharge pulp mill. |
05/17/1995 | EP0652990A1 Method of processing recycled paper. |
05/17/1995 | EP0652961A1 Recombinant xylanases |
05/17/1995 | EP0652945A1 C. antarctica lipase and lipase variants |
05/17/1995 | EP0652802A1 Device for admixing a processing agent to a pulp suspension. |
05/16/1995 | US5415739 Detackification agent for adhesives found in paper fiber furnishes |
05/16/1995 | US5415735 Suspennnnnsion of galactoglucomannans and deacetylation using esterase enzymes |
05/16/1995 | US5415734 Process for bleaching pulp without using chlorine containing chemicals |
05/16/1995 | US5415294 Screen with a surface having projections or depressions |
05/11/1995 | WO1995012710A1 A method of separating metal ions from pulp |
05/11/1995 | WO1995012709A1 Process for bleaching a chemical pulp |
05/11/1995 | CA2175817A1 Process for bleaching a chemical pulp |
05/11/1995 | CA2173735A1 A method of separating metal ions from pulp |
05/10/1995 | EP0652321A1 Chemical pulp bleaching |
05/10/1995 | EP0651832A1 Process for gas phase delignifying wood pulp |
05/10/1995 | EP0651792A1 A novel cellobiose oxidase, an enzymatic agent and a process for treating paper pulp |
05/10/1995 | EP0651785A1 ALKALOPHILIC $i(BACILLUS sp. AC13) AND PROTEASE, XYLANASE, CELLULASE OBTAINABLE THEREFROM |
05/10/1995 | EP0605449B1 Defoamer composition |
05/10/1995 | EP0572388B1 Ctmp-process |
05/10/1995 | EP0483163B1 Environmentally improved process for bleaching lignocellulosic materials |
05/10/1995 | CN2196636Y Air-cushion type washing and sizing tower |
05/09/1995 | US5413676 Cellulosic fiber of improved wettability |
05/04/1995 | WO1995012029A1 Aminoalkane diphosphonic acids in pulp bleaching |
05/04/1995 | WO1995012028A1 Multiple filter dynamic washer |
05/04/1995 | CA2173488A1 Multiple filter dynamic washer |
05/03/1995 | EP0650541A1 Process for bleaching pulp in conjunction with adsorption of metals. |
05/02/1995 | US5411669 Conveying and fluid flow |
05/02/1995 | US5411635 Exposure to a mixture of ozone and peroxymonosulfate |
05/02/1995 | US5411634 Bleaching paper pulps with ozone gas |
05/02/1995 | US5411633 Bleaching paper pulps with ozone gas |
05/02/1995 | CA1335406C Process for the manufacturing of bleached chemicothermomecanical pulp |
04/26/1995 | EP0649941A1 Pitch control in paper mill systems |
04/26/1995 | EP0649938A1 Process for the bleaching of chemical pulp |
04/25/1995 | US5409570 Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone |
04/23/1995 | CA2117984A1 Process for the bleaching of chemical pulp |
04/20/1995 | WO1995010658A1 Sealing strip for dewatering device with press rolls |
04/20/1995 | WO1995010657A1 Process for bleaching of pulp for paper making using hydrogen peroxide |
04/20/1995 | WO1995010656A1 Methanol recovery |
04/20/1995 | WO1995010486A1 Method and apparatus for treating paper mill effluent |
04/20/1995 | WO1995010351A1 A method and an apparatus for mixing ozone-bearing gas into a pulp-suspension |
04/20/1995 | WO1995010350A1 Method and device for mixing of a fluid into a pulp-suspension |
04/20/1995 | CA2174087A1 Methanol recovery |
04/19/1995 | EP0571433B1 Bleaching of lignocellulosic material with activated oxygen |
04/19/1995 | CN1028251C Method for control of pitch |
04/19/1995 | CN1028250C Pulpingy process |
04/18/1995 | US5407827 Treating pulp with hydrolase enzyme(isolated from fungus culture) to release lignin without affecting cellulose |
04/18/1995 | US5407426 Method and apparatus for delivering oxygen into blood |
04/13/1995 | WO1995009946A1 A process for production of linerboard and corrugated medium |
04/13/1995 | WO1995009945A1 Method of treating chemical paper pulp without using chlorine-containing chemicals |
04/13/1995 | WO1995009944A1 DESCALING BY REGULATING pH AND SALT CONCENTRATION |
04/13/1995 | WO1995009909A1 An enzyme preparation comprising a modified enzyme |
04/13/1995 | CA2173215A1 Descaling by regulating ph and salt concentration |
04/13/1995 | CA2173214A1 An enzyme preparation comprising a modified enzyme |
04/12/1995 | EP0647466A2 Cellulosic membranes |
04/12/1995 | EP0647158A1 Method for delignifying and bleaching a lignocellulose material. |
04/12/1995 | EP0547057B1 Pressurized dynamic washer |
04/11/1995 | US5405498 Method for improving pulp washing efficiency |
04/11/1995 | US5405497 Gas is introduced through a porous surface of revolution producing bubbles |
04/06/1995 | WO1995009268A1 Method and apparatus for dewatering of a fibre suspension |
04/06/1995 | CA2172285A1 Method and apparatus for dewatering of a fibre suspension |
04/05/1995 | EP0568599B1 Method for avoiding pitch troubles by use of thermostable lipase |
04/04/1995 | US5403442 Pumping with deaerating centrifugal pump controls foaming on heat exchanging evaporator surfaces |
04/04/1995 | US5403441 Minimal variation in pressure and oxygen concentration at ozone generator provided by five interacting feedback loops; high speed adjustment |
03/30/1995 | WO1995008667A1 Apparatus for fluffing high consistency wood pulp |
03/30/1995 | WO1995008666A1 Chlorine-free bleaching of chemical pulp involving a two stage treatment with chelating agent |
03/30/1995 | WO1995008665A1 A device for distributing liquid, especially washing liquid for washing paper pulp |
03/30/1995 | WO1995008664A1 Oxygen delignification of medium consistency pulp slurry |
03/30/1995 | CA2168445A1 Chlorine-free bleaching of chemical pulp involving a two stage treatment with chelating agent |
03/29/1995 | EP0644966A1 Bleaching recycled pulp with a reductive-oxidative sequence. |
03/29/1995 | EP0644965A1 Bleaching recycled pulp with ozone and hydrogen peroxide |
03/28/1995 | US5401362 Control of metals and dissolved organics in the bleach plant |
03/28/1995 | US5401360 Method for de-inking printed paper |
03/23/1995 | WO1995008021A1 Eop stage for chlorine free bleaching |
03/23/1995 | WO1995008020A1 Arrangement for spreading paper pulp in a container |
03/23/1995 | WO1995007988A1 PURIFIED pH NEUTRAL RHIZOCTONIA LACCASES AND NUCLEIC ACIDS ENCODING SAME |
03/23/1995 | CA2171288A1 Purified ph neutral rhizoctonia laccases and nucleic acids encoding same |
03/22/1995 | CA2132165A1 Method for rapid ozone bleaching of wood pulp |
03/21/1995 | CA2020047C Apparatus for dewatering pulp |
03/16/1995 | WO1995007386A1 Papermaking process |
03/16/1995 | WO1995007385A1 Method for the treatment of paper pulp and enzymatic aqueous preparation for carrying out same |
03/16/1995 | CA2147276A1 Papermaking process |
03/16/1995 | CA2132057A1 Pressurized peroxide bleaching |
03/15/1995 | EP0643081A1 Polymers of vinylsulfonic acid |
03/15/1995 | EP0642610A1 Treatment of bleach plant effluents |
03/14/1995 | US5397434 Method for distributing cellulosic pulp through a reactor at a constant upward velocity |
03/09/1995 | WO1995006774A1 Minimum adverse environmental pulp mill with feed to chlorate manufacture |
03/09/1995 | WO1995006773A1 Medium consistency ozone brightening of high consistency ozone bleached pulp |
03/09/1995 | WO1995006772A1 Improved method for bleaching lignocellulosic pulp |
03/09/1995 | WO1995002086A3 Process for removing metal ions from liquids |
03/09/1995 | CA2170733A1 Medium consistency ozone brightening of high consistency ozone bleached pulp |
03/09/1995 | CA2170612A1 Minimum adverse environmental pulp mill with feed to chlorate manufacture |
03/09/1995 | CA2170398A1 Improved method for bleaching lignocellulosic pulp |
03/08/1995 | EP0641883A2 Oxygen delignification method |
03/08/1995 | EP0641403A1 Process for producing paper or paperboard with increased strength from mechanical pulp. |