| Patents for D21B 1 - Fibrous raw materials or their mechanical treatment (6,805) |
|---|
| 10/15/1992 | DE4111898A1 Recycled paper processing - includes taking part of material from charge from dissolving to sorting stages to be sorted while the dissolving stage is recharged |
| 10/06/1992 | US5152402 Flexibly embedded disc screen |
| 10/06/1992 | CA1308289C Method and device at manufacture of fibre pulp |
| 10/03/1992 | CA2064280A1 Integrated wastepaper treatment process |
| 10/01/1992 | WO1992016686A1 Method for recycling plastic coated paper product waste and polymeric film |
| 09/29/1992 | CA1308096C Porphyrins, their syntheses and uses thereof |
| 09/29/1992 | CA1308064C Wood chip classifying system |
| 09/28/1992 | WO1992017637A1 Refiner |
| 09/28/1992 | CA2104874A1 Refiner |
| 09/28/1992 | CA2057409A1 Anti-plugging adjustable orifice for gas sparged hydrocyclone |
| 09/22/1992 | WO1992016311A1 A roller screen for screening bulk material, especially wood chips |
| 09/22/1992 | US5148998 Apparatus for the treatment of milling products |
| 09/17/1992 | WO1992015751A1 Recycling waste cellulosic material |
| 09/15/1992 | US5147503 Recycling waste cellulosic material with sodium sulphide digestion |
| 09/15/1992 | US5147502 Recovering cellulose fibers |
| 09/15/1992 | CA1307416C Method and apparatus for mixing chemicals into fiber pulp |
| 09/09/1992 | EP0314782B1 Gap, wear and tram measurement system and method for grinding machines |
| 09/08/1992 | US5145121 Apparatus for crushing or grinding of fibrous material, in particular drum refiner |
| 09/08/1992 | US5145010 Impregnating softwood chips with water and complexing agent, refining, fractionation |
| 09/02/1992 | EP0501059A1 Steam explosion pulping process for papermaking |
| 09/02/1992 | EP0500674A1 A method of producing cellulosic pulp |
| 09/02/1992 | CN2114671U Pulp low-consumption disintegrating machine |
| 09/02/1992 | CN2114670U Pulp sand removing disintegrating machine |
| 08/29/1992 | CA2037275A1 Steam explosion pulping process for papermaking |
| 08/26/1992 | EP0499618A1 Hydrolysis of resin in pulp. |
| 08/26/1992 | CN1063831A Method and apparatus for grading fibrous material |
| 08/20/1992 | WO1992013990A1 Method for controlling a defibration process |
| 08/19/1992 | CN1063732A Paper making method by all stem pulp making |
| 08/11/1992 | US5137621 Integrated screening system for sizing wood chips |
| 08/11/1992 | US5137599 Conversion of pulp and paper mill sludge to papermaking pulp |
| 08/06/1992 | WO1992012809A1 Recycling the components of used single use human waste collecting and/or absorbing products |
| 08/06/1992 | WO1992012808A1 Method and apparatus for grading fibrous material |
| 08/05/1992 | EP0497671A1 Method of refining a paper pulp |
| 08/05/1992 | EP0497572A1 High pressure water jet comminuting |
| 08/04/1992 | US5135612 Compressing the exploded bark, drying |
| 08/02/1992 | CA2059590A1 High pressure water jet comminuting |
| 08/01/1992 | CA2060395A1 Process for the preparation of paper pulp |
| 07/28/1992 | US5133507 Procedure and apparatus for the sorting of wood chips |
| 07/22/1992 | CN1062939A Method for making artificial fibre pulp and xylitol using corn stalk as material |
| 07/21/1992 | US5131980 Hydrocyclone removal of sticky contaminants during paper recycling |
| 07/16/1992 | DE4100952A1 Used paper prepn. sluice - has rinsing water feed with controlled constant vol. flow over period of time |
| 07/15/1992 | EP0494519A1 High yield pulping process |
| 07/14/1992 | US5129987 Process for bleaching mechanical wood pulp with sodium hydrosulfite and sodium hydroxide in a refiner |
| 07/09/1992 | WO1992011408A1 Wood chip screen |
| 07/08/1992 | EP0493726A1 Fibrous composition for making paper, paper and its use, and process for making the fibrous composition and the paper |
| 07/08/1992 | EP0493725A1 Device for disintegration of flexible packaging material |
| 07/08/1992 | EP0493724A1 Process for treating waste paper |
| 07/08/1992 | EP0493720A2 Method for reprocessing thermoplastic coated packing materials and thermoplastic material for further manufacture |
| 07/08/1992 | EP0493715A1 Process for treating waste paper |
| 07/08/1992 | EP0493422A1 Improved plug screw feeder. |
| 07/08/1992 | CA2057231A1 Method of pretreating lignocellulosic materials prior to alkaline peroxide high yield pulping |
| 07/07/1992 | US5127591 Apparatus for crushing or grinding of fibrous material, in particular drum refiner |
| 07/01/1992 | EP0492600A1 Refining assisting agent and refining method using the same |
| 07/01/1992 | CN1017269B Pressurized flotation modules and method for pressurized from separation |
| 06/30/1992 | US5125584 Method and apparatus for removing impurities from paper pulp in pulpers |
| 06/30/1992 | CA2058541A1 Fibrous component for paper production, paper made therewith and use thereof and method for producing fibrous component and paper |
| 06/30/1992 | CA2058540A1 Method for reprocessing thermoplast-coated packing materials and thermoplast material for further processing |
| 06/30/1992 | CA2058535A1 Apparatus for disintegrating flexible packing materials |
| 06/23/1992 | CA1304142C Method and apparatus for controlling the production of thermal mechanical pulp |
| 06/16/1992 | US5122228 Cooking in a digester with saturated steam; reduction of chemicals to de-ink |
| 06/16/1992 | CA1303400C Apparatus for treatment of fibre suspensions |
| 06/11/1992 | WO1992010606A1 Method of treatment of waste paper or the like |
| 06/09/1992 | CA1302764C Method of preparing a pumpable slurry |
| 06/03/1992 | EP0487793A1 Explosion process for preparing pulp for paper making |
| 06/02/1992 | US5117983 Separate wood chips |
| 06/02/1992 | US5117972 Container |
| 06/02/1992 | CA1302018C Lignocellulosic material bleeching process |
| 05/27/1992 | EP0486905A1 Sorter |
| 05/27/1992 | EP0486904A1 Method and installation for waste paper processing |
| 05/27/1992 | EP0486631A1 A method and a device for separating plastic particles from suspensions |
| 05/26/1992 | CA1301696C Apparatus for distribution of logs into grinder supply shafts |
| 05/24/1992 | CA2056051A1 Drum sorter |
| 05/23/1992 | CA2056050A1 Sorter |
| 05/19/1992 | US5113621 Accuset micrometer lathe |
| 05/13/1992 | EP0485355A1 Foam removal from receiving tanks of gas sparged hydrocyclones |
| 05/13/1992 | EP0371066B1 Method and apparatus for controlling the production of refined stock |
| 05/12/1992 | US5112443 Method and apparatus for the manufacture of fibre pulp |
| 05/12/1992 | US5111999 Arrangement for fastening the grindstone of a pulp grinder to a rotary shaft |
| 05/09/1992 | CA2046195A1 Foam removal from receiving tanks of gas sparged hydrocyclones |
| 05/07/1992 | DE4105368C1 Handling photographic paper having plastic coating - includes dissolving cellular material from plastic using strong base |
| 05/05/1992 | US5110453 Split feed reject claimer |
| 05/05/1992 | US5109988 Machine and method for sorting out fines, pins, and over-thick wood chips |
| 05/01/1992 | WO1992008843A2 Fiber treatment apparatus |
| 05/01/1992 | WO1992007993A1 Method and apparatus for removing ink from waste paper material |
| 05/01/1992 | WO1992007992A1 Multi pin rotor fiber fluff generator |
| 05/01/1992 | WO1992007991A1 Fiberizing apparatus |
| 05/01/1992 | CA2095342A1 Method and apparatus for removing ink from waste paper material |
| 05/01/1992 | CA2095340A1 Fiberizing apparatus |
| 05/01/1992 | CA2095339A1 Multi pin rotor fiber fluff generator |
| 05/01/1992 | CA2095047A1 Fiber treatment apparatus |
| 04/30/1992 | WO1992007995A1 Treatment of absorbent sanitary paper products |
| 04/30/1992 | WO1992007137A1 Method of pulping waste pressure-sensitive adhesive paper |
| 04/28/1992 | US5108586 Flotation machine for deinking |
| 04/23/1992 | DE4033701A1 Complete sepn. of metal-coated plastics and paper - by treatment at above 35 deg. C with soln. of strong electrolyte, pref. calcium chloride, followed by sink-float sepn. in same liq. |
| 04/21/1992 | CA1299139C Disc screen classifier |
| 04/15/1992 | EP0480851A1 Plate with abrasion resistant surface and method of manufacturing same |
| 04/08/1992 | EP0479203A1 Pulper for paper making |
| 04/08/1992 | EP0479141A1 Method of preparing fibre material and the use of this method |
| 04/04/1992 | WO1992005881A1 Bar screen having a reciprocating action |
| 04/04/1992 | CA2093342A1 Bar screen having a reciprocating action |