| Patents for D21B 1 - Fibrous raw materials or their mechanical treatment (6,805) |
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| 06/23/1999 | EP0924336A1 Process for deinking pulp from waste paper |
| 06/22/1999 | CA2153555C Flotation apparatus |
| 06/16/1999 | EP0921862A1 A process for purification of a fibre suspension |
| 06/15/1999 | US5913235 Procedure for determining the diffusion coefficient prevailing in a fibre wall |
| 06/03/1999 | WO1999027177A1 Method for deinking and other contaminent removal from wastepaper |
| 06/03/1999 | WO1999026725A1 Refining elements |
| 06/01/1999 | CA2207963C Separation of cellulosic and non-cellulosic fractions from paper products |
| 06/01/1999 | CA2176749C Segmented wood chip cracking roll |
| 06/01/1999 | CA2175230C A method and an apparatus for production of a fibrous material containing curled fibers |
| 05/27/1999 | DE19751629A1 Treatment of domestic, light industrial and mixed waste containing heavy materials |
| 05/27/1999 | DE19751628A1 Separation of matted fabric from plastic within waste treatment facility |
| 05/26/1999 | EP0793747A4 Methods for pulping and deinking |
| 05/26/1999 | CN2320648Y Machine for opening straw bag of paper-making raw material |
| 05/20/1999 | CA2254155A1 Process for manufacturing high-yield, high-strength pulp at low energy |
| 05/19/1999 | EP0916000A1 Perfected reactor for liquids purification |
| 05/19/1999 | CN2319116Y Medium thickness pulp disk grinder |
| 05/18/1999 | US5904304 Apparatus and method for fiberizing solid wood blocks |
| 05/12/1999 | EP0914517A1 Method and apparatus for bleaching wood pulp, especially containing waste paper |
| 05/06/1999 | EP0912793A1 Feeding device for moist material at high gas pressure |
| 05/05/1999 | CN1215773A Improved process for adjusting alkalinity of pulp slurry in broke pulper |
| 04/30/1999 | CA2252148A1 Control system for repulping apparatus |
| 04/28/1999 | EP0911443A1 Improved process for adjusting the alkalinity of a pulp slurry in a broke pulper |
| 04/28/1999 | EP0910475A1 Pulp decontamination apparatus and method of use |
| 04/28/1999 | EP0726880A4 Deinking of recycled pulp |
| 04/27/1999 | US5897772 Draft tubes; froth floation |
| 04/24/1999 | CA2251272A1 Improved process for adjusting the alkalinity of a pulp slurry in a broke pulper |
| 04/15/1999 | WO1999018285A1 Method for processing straw into pulp and paper product therefrom |
| 04/15/1999 | CA2304575A1 Method for processing straw into pulp and paper product therefrom |
| 04/14/1999 | EP0907409A1 Method and apparatus for mixing a second medium with a first medium |
| 04/14/1999 | CN1214091A Process for producing pulp from lignocellulosic plants, and pulp obtained |
| 04/08/1999 | WO1999016959A1 Process and device for treating waste paper without biocides, chlorine compounds, hydrogen peroxide and peracetic acid, recycled tissue paper with a total germ number of less than 1000 kbe/g and a surface germ number of less than 20 kbe/dm?2¿ |
| 04/07/1999 | EP0809731B1 Process for recovering raw materials from a flow of residual or collected materials during paper manufacture and plant therefor |
| 04/06/1999 | US5890600 Method and apparatus for removing impurities from pulverized or chipped material, especially wood chip and fiber materials |
| 04/01/1999 | WO1999015728A1 A methdo of producing paper-pulp raw materials |
| 04/01/1999 | WO1999015278A1 Apparatus for cleaning a suspension, preferably a fiber mass suspension |
| 04/01/1999 | DE19742729A1 Verfahren zur Aufbereitung von Altpapier unter Vermeidung von Bioziden und Chlorverbindungen, sowie von Wasserstoffperoxid und Peressigsäure, Einrichtung zur Ausführung dieses Verfahrens sowie Recycling Tissuepapiere mit einer Gesamtkeimzahl kleiner 1000 KBE/g und einer Oberflächenkeimzahl kleiner 20 KBE/dm·2· Process for treating waste paper, avoiding biocides and chlorine compounds, as well as hydrogen peroxide and peracetic acid, means for performing this process and recycling tissue papers with a total bacterial count of less than 1000 CFU / g and a surface germ count of less than 20 CFU / dm · 2 · |
| 03/31/1999 | EP0813631B1 Method and apparatus for treating filler-containing material such as recycled fibers |
| 03/30/1999 | US5888345 Absorbent granular product |
| 03/25/1999 | WO1999014430A1 Floor absorbent granular product |
| 03/25/1999 | CA2291128A1 Floor absorbent granular product |
| 03/24/1999 | CN2311318Y Waste paper integral forming machine |
| 03/17/1999 | EP0902119A2 Process for preparing a paper web |
| 03/16/1999 | US5882480 Used as agricultural carrier;forming slurry from waste paper containing kaolin, cellulose fibers, screening, cleaning and deinking, cleaning effluent, clarification, dewatering, breaking up filter cake |
| 03/16/1999 | CA2073763C Ctmp-process |
| 03/11/1999 | WO1999011376A1 Toroidal flow pulper for difficult materials |
| 03/09/1999 | US5879510 Light drainability, bulky chemimechanical pulp that has a low shive content and a low fine-material content |
| 03/09/1999 | CA2069984C Method of extraction of wood chemical protection agent by release at atmospheric pressure |
| 03/04/1999 | WO1999010594A1 Plant for producing and treating wood fibres |
| 03/04/1999 | DE19736127A1 Fiber suspension sorting sieve |
| 03/03/1999 | EP0783380B1 Low velocity air density separator |
| 03/02/1999 | US5876559 Deinking of impact and non-impact printed paper by an agglomeration process |
| 03/02/1999 | US5876558 Froth flotation deinking process for paper recycling |
| 02/24/1999 | EP0898012A1 Process and aparatus for the pulping of fibrous products |
| 02/23/1999 | CA2175238C Defibrator having improved defibration |
| 02/18/1999 | WO1999007935A1 Method of pretreating lignocellulose fiber-containing material for the pulp making process |
| 02/16/1999 | US5871161 Method and apparatus for recycling laminated film |
| 02/16/1999 | US5871160 Apparatus and associated method for derfibering paper or dry pulp |
| 02/09/1999 | US5868259 For screening wood chips or waste |
| 02/09/1999 | US5868186 Debarking wood without introducing contaminants into the wood |
| 02/09/1999 | CA2151364C A method of producing mechanical and chemi-mechanical pulp |
| 02/03/1999 | EP0894892A1 Flotation process and apparatus to remove contaminants from a fibers suspension |
| 02/03/1999 | EP0894891A1 Process and apparatus to eliminate solids from an aqueous fiber suspension |
| 02/03/1999 | EP0646049B1 A method for manufacturing low bark content wood chips from whole-tree chips |
| 02/02/1999 | US5865949 Process for preparing and treating mechanical pulp with an enzyme preparation having cellobiohydralase and endo-β-glucanase activity |
| 02/02/1999 | US5865947 Repulping wastepapers |
| 02/02/1999 | US5865382 Protection system for a wood chip destructuring device |
| 01/28/1999 | WO1999003586A1 Rotary shear |
| 01/28/1999 | DE19732077A1 Process to convert raw vegetable matter directly into end-products |
| 01/27/1999 | CN1206056A Grinder for paper-making pulper |
| 01/26/1999 | US5863120 Medium consistency liquid mixture |
| 01/21/1999 | DE19730486A1 Processing lignocellulose-containing biomass, especially wood |
| 01/14/1999 | WO1999001606A1 Method and device for treating steam in a fiber refining process |
| 01/12/1999 | USRE36033 Treatment of fibers |
| 01/12/1999 | CA2054615C Controlled flow management for wood chip screening |
| 01/07/1999 | EP0888819A1 Method and plant for removing impurities from an aqueous suspension of fibrous matter |
| 01/07/1999 | EP0796153A4 An elastomeric joint for a blade tensioning mechanism |
| 01/07/1999 | EP0751829A4 Process and apparatus for recycling disposable diapers |
| 01/07/1999 | DE19728394A1 Cleaning fibre suspensions |
| 01/05/1999 | CA2036171C Method and apparatus for wood chip sizing |
| 12/30/1998 | EP0887458A1 Process to suspend and clean a paper stock containing contaminants |
| 12/30/1998 | EP0791103A4 Method of papermaking having zero liquid discharge |
| 12/30/1998 | CN1203642A Method and apparatus for continuously preparing cellulose pulp |
| 12/29/1998 | US5853534 Method of producing pulp with high yield using a two-stage refining system operating at different temperatures |
| 12/23/1998 | EP0886001A1 Process and apparatus to disperse a paper fibers slurry |
| 12/23/1998 | EP0885325A1 Magnetic deinking of waste papers |
| 12/23/1998 | CN1202944A Method for improving the efficiency of chemical pluping processes by pretreating wood or pulpwood with white rot fungi |
| 12/22/1998 | US5851349 Magnetic deinking of waste papers |
| 12/16/1998 | EP0883711A1 Production method |
| 12/16/1998 | CN1201850A Pre-immersion coated waste paper destructor |
| 12/15/1998 | US5849155 Method for dispersing cellulose based fibers in water |
| 12/15/1998 | US5849149 Magnetic deinking of waste papers |
| 12/09/1998 | EP0882521A2 Adjustable bar screen |
| 12/09/1998 | EP0882520A2 Adjustable bar screen |
| 12/09/1998 | EP0882519A2 Adjustable bar screen |
| 12/09/1998 | CN1041121C Ink-removing agent for waste paper |
| 12/08/1998 | CA2156970C Extended outer ring for refiner plate |
| 12/03/1998 | WO1998054403A1 Baffle for reactors used for liquids purification |
| 12/03/1998 | WO1998054402A1 Perfected reactor for liquids purification |
| 12/02/1998 | EP0880614A1 Method for recovering fiber from printed wastepaper |
| 12/01/1998 | US5842507 Wood chip optimizer |