| Patents for D21C 3 - Pulping cellulose-containing materials (5,020) |
|---|
| 04/25/1996 | CA2202552A1 Defoamer composition and method of using the same |
| 04/16/1996 | US5507912 Providing high efficiency in both phases of digesting process |
| 04/11/1996 | WO1996006935A3 Arabinoxylan degrading enzymes |
| 04/10/1996 | EP0705327A1 Multicomponent bleaching system |
| 04/09/1996 | CA2008526C Method for producing pulp for papermaking using microwave heating of treated chips and defibration |
| 04/03/1996 | EP0704002A1 A pulp production process |
| 03/28/1996 | WO1996009432A1 Method and apparatus for the continuous production of cellulosic pulp |
| 03/28/1996 | CA2208264A1 Method and apparatus for the continuous production of cellulosic pulp |
| 03/26/1996 | US5501769 For papermaking |
| 03/19/1996 | US5500084 Method and apparatus for pulping cellulosic material using a vessel with an impergnation zone and an attrition zone |
| 03/14/1996 | WO1996007787A1 Cooking with spent liquor pretreatment of cellulose material |
| 03/14/1996 | WO1996007786A1 Continuous kraft cooking with black liquor pretreatment |
| 03/07/1996 | WO1996006974A1 Sulphite fusion process |
| 03/07/1996 | WO1996006935A2 Arabinoxylan degrading enzymes |
| 03/07/1996 | CA2198485A1 Sulphite pulping process |
| 03/07/1996 | CA2174844A1 Arabinoxylan degrading enzymes |
| 03/06/1996 | CN1118029A Technology for production of bamboo-wood flossy pulp-board |
| 03/05/1996 | CA2037717C Extended kraft cooking with white liquor added to wash circulation |
| 02/29/1996 | WO1996006217A1 Enhancements in pulping with dissolved solids control |
| 02/28/1996 | EP0698667A1 Xylanase, microorganisms for its production, DNA molecules, process of preparation and use thereof |
| 02/28/1996 | EP0698139A1 Dissolved solids control in pulp production |
| 02/28/1996 | CN1117746A Straining device |
| 02/14/1996 | EP0696224A1 Aqueous anti-foaming agent dispersions |
| 02/14/1996 | EP0573497B1 Recycling waste cellulosic material |
| 02/06/1996 | US5489363 Pulping with low dissolved solids for improved pulp strength |
| 02/01/1996 | WO1996002698A1 Two-stage kraft cooking |
| 02/01/1996 | DE4420221A1 Cellulose fibre from calcium pectinate-contg. plant substrates esp. flax |
| 01/24/1996 | EP0693143A1 Cooking system for hardwood |
| 12/27/1995 | EP0688373A1 Process to produce chemi-mechanical pulp and/or chemi-thermo-mechanical pulp |
| 12/21/1995 | WO1995034712A1 Improved chip feeding for a continuous digester |
| 12/20/1995 | EP0687724A1 Foam control agent |
| 12/19/1995 | US5476572 Chip feeding for a continuous digester |
| 12/06/1995 | EP0685015A1 Straining device. |
| 12/06/1995 | EP0627029A4 Pulp bleaching apparatus and method. |
| 12/05/1995 | US5472572 Reactor for bleaching high consistency pulp with ozone |
| 11/30/1995 | WO1995032331A1 Sulphidic impregnation of chips for alkaline pulping |
| 11/28/1995 | US5470437 Digester for cooking pulp having staggered screens |
| 11/28/1995 | US5470433 Process for the delignification of cellulose fiber raw materials using alcohol and alkali |
| 11/02/1995 | WO1995029288A1 Pulp digestion aid |
| 10/24/1995 | CA1337386C Process and preservative for fodder preservation |
| 10/12/1995 | WO1995027099A1 Nonwooden fiber digesting method and digesting apparatus for the same |
| 10/11/1995 | CN1030003C Process for preparation of cooking liquors having high sulphidity for sulphate pulp cooking |
| 10/10/1995 | US5456799 Method for controlling activation of lignocellulosic material in the presence of a nitrate containing liquid |
| 10/05/1995 | WO1995026438A1 Polyoxometalate delignification and bleaching |
| 10/05/1995 | CA2187370A1 Polyoxometalate delignification and bleaching |
| 10/04/1995 | CN1109534A Process for producing newsprint from birch CTMP |
| 10/03/1995 | US5454907 Method of refining woodchips or beating wood pulp with a selectively sulfonated chitosan |
| 09/27/1995 | EP0673453A1 Process for continuous cooking of pulp |
| 09/27/1995 | EP0673452A1 Digester for continuous cooking of fibre material. |
| 09/26/1995 | CA2066181C Displacement heating in continuous digesters |
| 09/20/1995 | EP0672207A1 Viscose production process. |
| 09/17/1995 | CA2144825A1 Method of bleaching cellulose pulp |
| 09/13/1995 | EP0670924A1 Method of continuously cooking pulp. |
| 09/13/1995 | EP0670893A1 Novel enzyme preparations and methods for their production |
| 09/08/1995 | WO1995023891A1 Impact of temperature and alkali charge on pulp brightness |
| 09/06/1995 | EP0669998A1 Digester for continuous cooking of fibre material. |
| 08/31/1995 | WO1995023257A1 Recycling of knots in a continuous process for cooking chemical pulp |
| 08/31/1995 | WO1995023256A1 Process for generation and use of additional pulping chemicals in kraft-type process |
| 08/17/1995 | WO1995021961A1 Method for optimizing the liquor-to-wood ratio when producing paper pulp |
| 08/17/1995 | WO1995021960A1 Process and device for digesting cellulose material in a carboxylic acid mixture |
| 08/17/1995 | WO1995021959A1 A process for separating cellulose fibers from lignin by heating in a solution comprising k3po4 and alkali |
| 08/15/1995 | US5441602 Process for the prevention of scale formation in wood pulp production |
| 08/09/1995 | EP0665911A1 Completely countercurrent cook continuous digester |
| 08/09/1995 | EP0494214B1 Process for manufacturing chemo-mechanical and/or chemo-thermo-mechanical wood pulps |
| 07/27/1995 | WO1995020066A1 Cold caustic extraction of pulps for absorbent products |
| 07/27/1995 | WO1995020065A1 Production of prehydrolyzed pulp |
| 07/18/1995 | US5433825 Method for pulping wood chips separate alkali and peroxymonosulfate treatments |
| 07/12/1995 | EP0662169A1 A process for the continuous digestion of cellulosic fiber material. |
| 07/11/1995 | US5431781 Process for the delignification of a chemical paper pulp with organic peroxy acid |
| 07/06/1995 | WO1995018261A1 Method and device for the continuous cooking of pulp |
| 07/06/1995 | WO1995018260A1 Process for delignifying virgin and post-consumer used ligno-cellulosic plant meterials for the purpose of preparing cellulosic fiber, free sugars and lignin by-products |
| 06/28/1995 | CN1104275A Method for production of hot-pressed makeready overlay paper for producing electronic industry hot-pressed veneer sheet |
| 06/27/1995 | US5427651 Method for producing bleached sulfate pulp having a long fiber fraction and a short fiber fraction |
| 06/22/1995 | DE4343508A1 Prodn. of cellulose from fibrous plant material by loosening |
| 06/14/1995 | EP0363379B1 Porphyrins, their syntheses and uses thereof |
| 05/31/1995 | CN1103124A Bamboo material fibre fluff pulp and making method |
| 05/18/1995 | WO1995013419A1 Implementation of dissolved solids profiling |
| 05/11/1995 | WO1995012708A1 Product and processing for reclaiming cotton fibers from 100 % cotton denim manufacturing scrap |
| 05/10/1995 | EP0572388B1 Ctmp-process |
| 05/10/1995 | EP0483163B1 Environmentally improved process for bleaching lignocellulosic materials |
| 05/09/1995 | US5413677 Method for producing chemical pulp from hardwood chips |
| 05/02/1995 | CA1335406C Process for the manufacturing of bleached chemicothermomecanical pulp |
| 04/26/1995 | EP0649531A1 Determination and control of effective alkali in kraft liquors by ir spectroscopy. |
| 04/25/1995 | US5409571 A pulping antiscaling agent comprising a terpolymers of maleic acid, acrylic acid, hypophosphorous acid |
| 04/19/1995 | CN1028250C Pulpingy process |
| 04/18/1995 | US5407583 Adding a mixture of polyacrylic acid, polymethacrylic acid, polymaleic anhydride, or copolymers thereof or copolymers with acrylamide, and polydimethyldiallylammonium chloride |
| 04/11/1995 | US5405498 Method for improving pulp washing efficiency |
| 03/28/1995 | US5401361 Completely coutercurrent cook continuous digester |
| 03/01/1995 | CN1099444A Dissolved solids control in pulp production |
| 02/09/1995 | WO1994029425A3 Multicomponent bleaching system |
| 02/07/1995 | CA2071185C Process for delignifying lignocellulosic pulp by means of oxygen |
| 02/07/1995 | CA1334240C Method of making chemi-mechanical pulp from hardwood |
| 01/31/1995 | US5385641 Delignification of cellulosic raw materials using acetic acid, nitric acid and ozone |
| 01/31/1995 | CA1334145C Magnesium ions in a process for alkaline peroxide treatment of nonwoody lignocellulosic substrates |
| 01/25/1995 | EP0635080A1 Method of producing pulp. |
| 01/17/1995 | US5382321 Process for the concentration of spent liquors |
| 01/11/1995 | EP0633351A1 Recycling waste cellulosic material |
| 01/05/1995 | WO1995000698A1 Hemicellulose recovery during kraft pulping |
| 01/03/1995 | US5378320 Control of recausticizing system operation by IR spectroscopys |
| 12/28/1994 | EP0631010A1 Method for improving pulp washing efficiency |