| Patents for D21B 1 - Fibrous raw materials or their mechanical treatment (6,805) |
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| 12/07/1999 | USRE36424 Forming suspension; removal non-ink impurities; softening ink vehicle; deinking |
| 12/07/1999 | US5998197 The invention is judged of considerable importance in reducing the substantial amount of downtime caused by pitch deposits and accumulations in the pulp and paper and other industries which convert pulpwoods. |
| 12/07/1999 | US5996806 Method and apparatus for treating filler-containing material such as recycled fibers |
| 12/02/1999 | WO1999061699A1 Method and device for flotation of pollutants from an aqueous fibrous material suspension |
| 12/02/1999 | WO1999061173A1 Method and apparatus for sorting of chips |
| 12/02/1999 | CA2333235A1 Method and apparatus for sorting of chips |
| 12/01/1999 | EP0960234A1 Method and apparatus of defibrating a fibre-containing material |
| 11/30/1999 | CA2197455C Low-resident, high-temperature, high-speed chip refining |
| 11/30/1999 | CA2009622C Process for reducing the pitch content in wood pulp |
| 11/24/1999 | EP0958428A1 Protection system for a wood chip destructuring device |
| 11/24/1999 | EP0958427A1 A method and equipment for manufacturing predetermined low bark content wood chips and a high bark content fuel fraction from wood chips with bark attached |
| 11/24/1999 | EP0958058A1 Refining element |
| 11/24/1999 | EP0958057A1 A pair of co-operating refining elements intended for a disc refiner |
| 11/18/1999 | DE19821437A1 Anlage zum Reinigen von Hackschnitzeln Installation for cleaning wood chips |
| 11/17/1999 | EP0956903A2 Installation for cleaning wood chips |
| 11/17/1999 | EP0956190A1 Apparatus for pulping and deinking |
| 11/17/1999 | EP0956152A1 Medium consistency liquid mixer |
| 11/16/1999 | US5985147 Culturing algae in an attached periphyton bed and running water to be treated over it; allowing algae to sequester pollutant from water thus cleansing water; harvesting algae to remove pollutant; mixing wet biomass with shredded fibers |
| 11/11/1999 | DE19858333A1 Vessel to break down used paper suspensions |
| 11/09/1999 | US5979665 Paper-pulp deinking method and equipment to implement this method |
| 11/09/1999 | US5979664 Methods and apparatus for acoustic fiber fractionation |
| 11/03/1999 | CN2346507Y Wasted paper ink removing hydrosizer |
| 11/02/1999 | US5975438 Refiner disc with curved refiner bars |
| 10/28/1999 | WO1999054543A1 Flotation module for pressurized deinking |
| 10/28/1999 | WO1999054045A1 Method and apparatus for processing pulp stock derived from a pulp or paper mill |
| 10/28/1999 | CA2329907A1 Flotation module for pressurized deinking |
| 10/28/1999 | CA2328205A1 Method and apparatus for processing pulp stock derived from a pulp or paper mill |
| 10/26/1999 | US5972164 Repulping wet strength broke (recyclable paper) by mixing with water, agitation, adding persulfate and base, heating |
| 10/26/1999 | US5971307 Rotary grinder |
| 10/26/1999 | US5971305 Rotary shredder |
| 10/19/1999 | US5967435 Chip conditioner drive |
| 10/14/1999 | DE19823053C1 Hand-operated sludge removal pump for garden ponds |
| 10/14/1999 | DE19802493C1 Verfahren zur Entfernung von Verunreinigungen aus einer Altpapier-Faserstoffsuspension A process for removing impurities from a paper-pulp suspension |
| 10/12/1999 | US5964421 Method and arrangement for treatment of reject material |
| 10/07/1999 | DE19845536A1 Removal of finer contaminants from papermaking suspension by froth flotation process |
| 10/06/1999 | EP0946820A1 Method and device for conducting a process in the production of paper |
| 10/06/1999 | EP0946817A1 Treatment process for cellulosic fibers |
| 10/06/1999 | EP0713508B1 Biocomposite material and method of making |
| 10/06/1999 | CN1230987A Cellulase variants |
| 10/06/1999 | CA2268338A1 Feeding of comminuted fibrous material to a pulping process |
| 10/05/1999 | CA2022760C Process for the comminution of materials |
| 09/30/1999 | WO1999049127A1 A process for removing contaminants from waste paper |
| 09/30/1999 | DE19833580A1 Flotation separator for fibrous materials having e.g. reciprocating rakes |
| 09/29/1999 | EP0944759A1 Arrangement in a pulp grinder |
| 09/29/1999 | EP0944758A1 Arrangement for feeding wood in a pulp grinder |
| 09/29/1999 | EP0944757A1 Arrangement for providing continuous grinding in a pulp grinder |
| 09/28/1999 | US5958182 Reducing fibrous tropical plant material to plurality of separated fibers, washing in aqueous solution to extract latex and other hydrophobic natural juices, pressing to remove further, drying to naturally hydrophobic fibers |
| 09/28/1999 | US5958179 Process for increasing pulp whiteness by bleaching printed wastepaper under intense dispersing mechanical treatment |
| 09/28/1999 | CA2066316C Process for making bleached high yield paper pulp |
| 09/22/1999 | EP0764225B1 A light drainability, bulky chemimechanical pulp that has a low shive content and a low fine-material content |
| 09/22/1999 | EP0759104B1 Method for defibering recycled paper |
| 09/22/1999 | CN1229155A Alkali-free wood pulp papermaking method |
| 09/21/1999 | US5954283 Papermaking refiner plates |
| 09/16/1999 | WO1999046443A1 Method of papermaking having zero liquid discharge |
| 09/16/1999 | DE19810649A1 Waste paper cleaning, screening, breakdown and pulping drum |
| 09/15/1999 | EP0941385A1 Method of making sanitary paper products from recycled newspapers |
| 09/15/1999 | EP0775233B1 Kneader for paper stuff |
| 09/15/1999 | CN2338366Y Pulp prodn. machine |
| 09/14/1999 | US5951822 Apparatus for making granular material |
| 09/14/1999 | US5950946 Pair of co-operating refining elements intended for a disc refiner |
| 09/14/1999 | US5950840 Bar screen system with attached screens |
| 09/14/1999 | CA2204522C Apparatus for fluffing pulp |
| 09/14/1999 | CA2202271C Wood chip strand splitter |
| 09/08/1999 | CN2337176Y 气泡发生器 Bubble generator |
| 09/02/1999 | WO1999043886A1 A method and an apparatus for treating a fluid mass |
| 09/01/1999 | CN2335997Y Mixer for loading straw in boiling ball |
| 09/01/1999 | CN1227163A Fiberboard and manufacturing method thereof |
| 08/26/1999 | WO1999042651A1 Method for removing wax from a pulp furnish |
| 08/26/1999 | CA2320961A1 Method for removing wax from a pulp furnish |
| 08/25/1999 | EP0937138A1 Cellulase variants |
| 08/25/1999 | EP0738342B1 Method for controlling a process by measurement of wood chips |
| 08/25/1999 | CN2334788Y Wheat stem mill |
| 08/19/1999 | WO1999041448A1 Method for the simple and environmentally benign pulping of nonwood fibrous materials |
| 08/17/1999 | CA2230315A1 Process for increasing mechanical wood pulp brightness in a refiner |
| 08/05/1999 | WO1999039043A1 Method and apparatus for wetting fibrous material |
| 08/05/1999 | DE4345322C2 Paper shredder for commercial recycling |
| 08/04/1999 | EP0932455A1 Air density system with air recirculation and gyrating bar feeder |
| 08/04/1999 | EP0932447A1 A method and an apparatus for recycling different components in a multiple layer material |
| 08/03/1999 | CA2096659C Method of processing printed waste-paper |
| 07/29/1999 | WO1999037402A1 Improvements to papermaking refiner plates |
| 07/28/1999 | EP0931873A1 Process for removing contaminants from a fibre suspension |
| 07/28/1999 | EP0931872A1 Process for removing fine contaminants from a fibre suspension |
| 07/28/1999 | CN2330687Y Continuous high-concentration pulp crusher |
| 07/28/1999 | CN1044396C Rolling mechanism |
| 07/27/1999 | US5927002 Holder for displaying, as well as a method for making, a floral bouquet |
| 07/21/1999 | EP0929713A1 Separation of solids from aqueous suspensions |
| 07/21/1999 | EP0767848B1 Plant for crushing a cellulose material |
| 07/20/1999 | CA2227566A1 Infeed chute |
| 07/14/1999 | EP0928842A2 Coarse wet particles and process for making the coarse wet particles |
| 07/14/1999 | EP0928350A1 Baffle for reactors used for liquids purification |
| 07/14/1999 | EP0700468B1 Improvement in comminuting wood pulp sheeting |
| 07/14/1999 | CN2328690Y Automatic pulp making device |
| 07/08/1999 | DE19858756A1 Fibrous panel containing lignocellulose long fibers for structural use in buildings, furniture making and cladding applications |
| 07/07/1999 | CN1044020C Appts. for fluffing pulp |
| 07/06/1999 | US5918822 Channeled pulp rotor |
| 06/30/1999 | EP0926294A1 Absorbent granular material |
| 06/29/1999 | US5917166 Method of washing sawdust and arrangement for carrying out the method |
| 06/25/1999 | CA2256902A1 Fiberboard and manufacturing method thereof |
| 06/24/1999 | WO1999031314A1 Multiflow pressurized deinking apparatus |
| 06/24/1999 | DE19757418A1 Molded bodies of vegetable matter using tubular spadix material, for insulating, filling or packaging |