| Patents for D21B 1 - Fibrous raw materials or their mechanical treatment (6,805) |
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| 04/08/2004 | US20040065419 Removal of contaminants from recycled paper fibers |
| 04/08/2004 | DE19614947B4 Verfahren zur Erhöhung des Weißgrades von Papierfaserstoff A process for increasing the whiteness of paper pulp |
| 04/08/2004 | DE10254544A1 Rotor, for a pulper, has hardened guides fitted to the leading edges of the rotor blades, which resist wear and are rapidly replaced on site |
| 04/01/2004 | WO2004027033A2 Lentiviral vector-mediated gene transfer and uses thereof |
| 04/01/2004 | US20040062879 Apparatus for liquid-based fiber separation |
| 04/01/2004 | CA2499643A1 Lentiviral vector-mediated gene transfer and uses thereof |
| 03/31/2004 | EP1403422A1 Process for treating waste paper |
| 03/30/2004 | CA2235544C A pair of co-operating refining elements intended for a disc refiner |
| 03/30/2004 | CA2109125C Refining segment |
| 03/25/2004 | US20040055717 Method of selecting wood for mechanical pulping |
| 03/25/2004 | DE10248261B3 Waste paper comminuter has rotor with cutter arms and sieve with reinforced cutting edges on perforations |
| 03/18/2004 | WO2004022842A1 A method of producing mechanical pulp and the mechanical pulp thus produced |
| 03/18/2004 | CA2497904A1 A method of producing mechanical pulp and the mechanical pulp thus produced |
| 03/17/2004 | EP1398410A1 Paper pulper |
| 03/16/2004 | US6705554 Rotor for a paper stock processing machine, anti-wear element for such a rotor, and paper stock processing apparatus |
| 03/16/2004 | CA2147173C Mixing device in pulping |
| 03/11/2004 | WO2004020733A1 Apparatus and method for automatically defibering and extracting kraft pulp from old corrugated cardboard |
| 03/10/2004 | EP1395704A1 Printing paper |
| 03/10/2004 | EP1395699A1 Method and apparatus for the feeding of fibres |
| 03/04/2004 | WO2004018767A1 Production of refined cellulose fibre from waste materials |
| 03/04/2004 | WO2004018747A1 Fibre mat |
| 03/04/2004 | US20040040680 Papermaking process and paper made therefrom |
| 03/04/2004 | US20040040677 Organic biomass paper pulping |
| 03/03/2004 | EP1119646B1 Liquid carton waste material recycling process and apparatus |
| 02/26/2004 | US20040035959 Method and system for utilizing waste |
| 02/26/2004 | US20040035764 Roller screen and method for sorting materials by size |
| 02/26/2004 | DE10236123A1 Verfahren zur Entfernung von Störstoffen aus einer wässrigen Papierfasersuspension A method for removing anionic trash from an aqueous paper fiber suspension |
| 02/19/2004 | DE10244521B3 Conversion of used paper into papermaking pulp, for quality graphic papers, has a fine sorting for the suspension while the rejected matter is separated into long and short fiber fractions for further cleaning and processing |
| 02/18/2004 | EP1152833B1 Method and production plant for the manufacture of fibrous material |
| 02/12/2004 | WO2004013408A1 Method for decomposing waste wood chips |
| 02/12/2004 | US20040026545 Method and arrangement for feeding wood batches into a pressure grinder |
| 02/12/2004 | DE10234833A1 Verfahren zum Aufschluss von Altholz Procedures for digestion of waste wood |
| 02/11/2004 | EP1388370A1 Method for removing impurities from an acqueous paper pulp suspension |
| 02/11/2004 | EP1287201B1 A process for controlling microbial growth |
| 02/11/2004 | CN2603108Y Rotor for high concentration hydraulic pulper |
| 02/05/2004 | US20040022128 Refiner control |
| 02/04/2004 | EP1386998A1 Pulper and method for the recovery of paper production waste |
| 02/04/2004 | EP1386034A2 Apparatus for disintegrating and compacting cellulose containing material |
| 02/04/2004 | CN1473222A Method of recycling bonded fibrous materials and synthetic fibers and fiber-like materials produced thereof |
| 01/31/2004 | CA2436379A1 Pulper device for the recovery of paper production waste, plant comprising said device and associated method for recovery of the waste |
| 01/29/2004 | WO2004009900A1 High defiberization chip pretreatment |
| 01/22/2004 | US20040011490 Pulper for producing paper pulp from waste paper |
| 01/22/2004 | US20040011482 Method for reducing and /or avoiding the build-up of wood components |
| 01/21/2004 | EP1381731A1 Production of fiber suspension from waste paper |
| 01/15/2004 | US20040008574 Propeller for stirring solid-in-liquid suspensions in a treatment tank |
| 01/14/2004 | CN1468337A Processed board-type products made of non-wooden fibers |
| 01/08/2004 | WO2004003289A1 A process for the production of cellulose fiber pulp |
| 01/08/2004 | WO2004003288A1 Method of manufacturing mechanical or chemi-mechanical pulp and an apparatus for manufacturing the same |
| 01/08/2004 | DE10143897B4 Verfahren und Maschine zum Aussondern der Pappanteile aus einem Altpapier-Gemenge Method and machine for separating the card parts from a paper-batch |
| 01/08/2004 | CA2491533A1 Method of manufacturing mechanical or chemi-mechanical pulp and an apparatus for manufacturing the same |
| 01/08/2004 | CA2491111A1 A process for the production of cellulose fiber pulp |
| 01/07/2004 | EP1075563B1 Method for removing wax from a pulp furnish |
| 01/06/2004 | US6673207 Laminated photocatalytic pulp paper and process for making thereof |
| 01/02/2004 | EP1375738A1 Method for removing impurities from an aqueous fibre suspension |
| 12/18/2003 | DE10209525C1 Verfahren zum Sortieren von Altpapiersammelware zum Gewinnen von Deinkingpapier und Vorrichtung zur Durchführung des Verfahrens A method of sorting waste paper collected goods for recovering deinking paper, and apparatus for carrying out the method |
| 12/17/2003 | EP0833981B1 Method and apparatus for mechanical defibration of wood |
| 12/16/2003 | CA2117076C A method and device for treating fibre material |
| 12/10/2003 | EP1368530A1 Grinding element and grinder stone |
| 12/10/2003 | EP1368529A1 Grinding segment and grinder stone |
| 12/10/2003 | CN2591083Y Straws mechanical pulp universal grinding machine |
| 12/10/2003 | CN2591082Y Pitch-remover for multi-roller sugarcane bagasses pitch removing machine |
| 12/04/2003 | WO2003100165A1 Improved impeller for paper pulps kneaders |
| 12/02/2003 | US6656324 Method for removing wax from a pulp furnish |
| 11/27/2003 | WO2003097928A1 Impeller for paper pulp kneaders |
| 11/27/2003 | WO2003010371A3 Method and device for classifying valuable material comprising at least one fibrous fraction |
| 11/27/2003 | US20030217826 Integrated system and method for purifying water, producing pulp and paper, and improving soil quality |
| 11/27/2003 | US20030217823 Method for producing pulp and products from high silica content agricultural waste materials |
| 11/26/2003 | CN1458334A Presteaming process for plant fiber material in steam explosion pulping |
| 11/25/2003 | US6651679 Feeding the contaminant-containing suspension of raw paper stock to a closed coarse screen, drawing cleaned flow fraction, drawing off an overflow fraction containing increased amount of impurities from the screen |
| 11/20/2003 | WO2003095737A1 Method for producing pulp and products from high silica content agricultural waste materials |
| 11/19/2003 | EP1362643A1 Apparatus and method to screen materials having different sizes and/or density |
| 11/19/2003 | EP0921862B1 A process for purification of a fibre suspension |
| 11/19/2003 | CN2586715Y Material discharging and diluting apparatus for high-density hydraulic beater |
| 11/18/2003 | USRE38317 Method and apparatus for treating filler-containing material, such as recycled fibers |
| 11/13/2003 | WO2003093555A1 Non-woven fiber webs with nylon binder |
| 11/13/2003 | US20030210606 Method and apparatus of mixing fibers |
| 11/13/2003 | US20030209471 Device for separating solids from liquids by means of flotation |
| 11/12/2003 | EP1360482A1 Method of selecting wood for mechanical pulping |
| 11/06/2003 | WO2002044465A3 Apparatus for disintegrating and compacting cellulose containing material |
| 11/05/2003 | EP1359250A2 Process for dispersing pulp |
| 11/05/2003 | EP1359249A1 Process for the hot dispersion of paper pulp |
| 11/05/2003 | EP1358020A1 Apparatus and method to separate elements or materials of different sizes |
| 11/05/2003 | EP1021612B1 Method for producing and treating wood fibres |
| 11/04/2003 | US6641699 Chemical wood pulping process with reduced pitch and VOC emissions |
| 11/04/2003 | CA2105800C Refiner segment |
| 11/03/2003 | CA2427781A1 Process for the hot dispersing of a paper fiber stock |
| 10/30/2003 | WO2003089715A1 Arrangement for treating pulpstone surface |
| 10/30/2003 | WO2003089699A1 Bamboo fibre and its manufacture |
| 10/30/2003 | US20030202422 Method and apparatus for mixing a fluid mass |
| 10/30/2003 | US20030201082 Non-woven fiber webs with nylon binder |
| 10/29/2003 | EP1356154A2 Feather processing method and product |
| 10/29/2003 | CN2583171Y Multifunctional saw bit type hay cutter |
| 10/28/2003 | CA2282598C Method and device for treatment of fibrous material |
| 10/23/2003 | WO2003087469A1 Process and apparatus for making a sheet of refractory fibers using a foamed medium |
| 10/22/2003 | EP0688377B1 Persulfate mixtures for repulping wet strength paper |
| 10/21/2003 | US6634583 Process and device for the dispersion of a fibrous paper material |
| 10/21/2003 | US6634578 Paper separation and singulation apparatus and method |
| 10/21/2003 | US6634575 Birch bark processing and the isolation of natural products from birch bark |
| 10/16/2003 | US20030192660 Mass of cellulosic fibers produced from wood |
| 10/16/2003 | US20030192659 Dried singulated crosslinked cellulose pulp fibers |