| Patents for D21B 1 - Fibrous raw materials or their mechanical treatment (6,805) |
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| 09/01/2004 | CN1525890A Used paper diaper processing method and used paper diaper processing device |
| 09/01/2004 | CN1524621A Process and device for aerating suspensions |
| 08/26/2004 | WO2004072363A1 An arrangement for and a method of treating pulp, and a method of modernizing a pulp tower |
| 08/26/2004 | WO2004072362A1 A method and a plant for producing and treating wood fibres |
| 08/26/2004 | US20040166791 Grinding segment and grinder stone |
| 08/26/2004 | US20040163788 Headbox sealing device |
| 08/26/2004 | US20040163782 Fibrous structure and process for making same |
| 08/26/2004 | US20040163781 Fibrous structure and process for making same |
| 08/26/2004 | US20040163779 Using aqueous ethanol solvent; brightness |
| 08/26/2004 | CA2515693A1 An arrangement for and a method of treating pulp, and a method of modernizing a pulp tower |
| 08/26/2004 | CA2512993A1 A method and a plant for producing and treating wood fibres |
| 08/25/2004 | EP1448846A1 Microwave pre-treatment of logs for use in making paper and other wood products |
| 08/25/2004 | EP1448845A2 Production of pulp from cellulosic fibrous raw materials and recovery of chemicals and energy from pulp liquors |
| 08/25/2004 | CN2635713Y Pitch variable macerator |
| 08/25/2004 | CA2456757A1 Process and device for aerating suspensions |
| 08/24/2004 | CA2091096C Method of treating papermaking fibers for making tissue |
| 08/21/2004 | CA2457820A1 Method for hydrogen peroxide bleaching of pulp |
| 08/18/2004 | EP1447470A1 Pulper for producing cellulose pulp from waste paper material |
| 08/17/2004 | US6776365 Waste pulping system |
| 08/12/2004 | US20040154765 Containing pulp as fiber; brigthness; opacity; smoothness |
| 08/12/2004 | US20040154762 Eucalyptus biomechanical pulping process |
| 08/12/2004 | US20040154760 Extraction, crushing, splitting; multistage process; contorlling temperature |
| 08/11/2004 | EP1289683B1 Method for processing waste and waste processing plant |
| 08/11/2004 | CN1519424A Use of thinnings and other low specific gravity wood for lyocell pulps method |
| 08/11/2004 | CN1161212C Bamboo pulp denatured productive tehcnology |
| 08/10/2004 | US6773545 Method of forming and metering fluff pulp |
| 08/05/2004 | WO2004064991A2 Improved pulper rotor and assembly |
| 08/05/2004 | CA2513609A1 Improved pulper rotor and assembly |
| 08/04/2004 | EP1443142A2 Process for singulating cellulose fibers from a wet pulp sheet |
| 08/04/2004 | CN1517488A Process and device for inflation suspension |
| 07/29/2004 | WO2004063462A2 Various banding apparatus and methods for using such |
| 07/29/2004 | US20040146771 Method of producing fuel cell separator, fuel separator, and polymer electrolyte fuel cell |
| 07/29/2004 | CA2512732A1 Various banding apparatus and methods for using such |
| 07/28/2004 | EP1441064A1 Method and device for aerating suspensions |
| 07/27/2004 | US6768016 Isolation of natural products from birch bark |
| 07/27/2004 | US6767463 Method for minimizing the new water use in the water circulation system of a treatment plant |
| 07/24/2004 | CA2454737A1 Process and device for aerating suspensions |
| 07/22/2004 | US20040140071 Titanium oxide; filter, packaging, and construction material with antibacterial, deodorizing, and oxidative properties; air, water, and soil treatment |
| 07/22/2004 | US20040140069 Defibered batch of waste paper is separated into coarse reject and fine fractions; initial fiber suspension is pumped through rotary screen; purification; waste recycling |
| 07/21/2004 | EP1438459A1 A method for preparing a homogenous cellulosic product from cellulosic waste materials |
| 07/20/2004 | US6764624 Method of producing fuel cell separator, fuel cell separator, and polymer electrolyte fuel cell |
| 07/20/2004 | US6764554 Refining element for a refining disk |
| 07/20/2004 | CA2176938C Device for admixing a processing agent to a pulp suspension |
| 07/15/2004 | DE3824569B4 Vorrichtung zur Herstellung einer Faserbahn An apparatus for producing a fibrous web |
| 07/14/2004 | EP1437428A1 Use of low specific gravity wood for lyocell products method |
| 07/13/2004 | US6761798 Method for forming an Arundo donax paper product |
| 07/13/2004 | CA2157880C Persulfate mixtures for repulping wet strength paper |
| 07/08/2004 | US20040131825 Various banding apparatus and methods for using such |
| 07/08/2004 | US20040129808 Hammermill |
| 07/08/2004 | US20040129392 Process for singulating cellulose fibers from a wet pulp sheet |
| 07/07/2004 | EP1435408A1 Hammermill |
| 07/06/2004 | CA2157512C Process and enzyme preparation for preparing mechanical pulp |
| 06/24/2004 | WO2004053224A1 Method for reducing the energy demand during refining of chemical pulp |
| 06/24/2004 | US20040119186 Method for recycling and reusing corrugated paper |
| 06/24/2004 | US20040118529 Processes for preparing mechanical pulps having high brightness |
| 06/24/2004 | DE10256519A1 Process to remove printing ink from recycled paper by selective floatation and separation of fibers into coarse and fine fractions |
| 06/24/2004 | DE10256305A1 Method for processing mixed waste materials comprises identifying materials of several different types as recyclable, separating them and wet-digesting, while residual waste stream is sorted and disposed of |
| 06/23/2004 | EP1431451A1 Equipment for feeding bales of chemical and mechanical pulp into a pulper |
| 06/17/2004 | WO2004050985A1 Removal of pitch from wood chips |
| 06/17/2004 | WO2004050984A1 Waste paper fibrous material utilization system and waste paper disintegration apparatus |
| 06/17/2004 | WO2004050983A1 Method and system for treatment of wood chips |
| 06/17/2004 | US20040113325 Method of fabricating PTFE material |
| 06/17/2004 | US20040112557 Wood particles are concurrent bleaches, refined into pulp |
| 06/17/2004 | DE10255314A1 Verfahren zur Herstellung einer wässrigen Suspension aus faserhaltigem Material A process for preparing an aqueous suspension of fibrous material |
| 06/16/2004 | EP1428928A2 Apparatus for grinding material and grinding element for such an apparatus |
| 06/16/2004 | EP1427883A1 Method and apparatus for producing fibre pulp and fuel out of municipal waste |
| 06/16/2004 | EP1015123B1 Apparatus for cleaning a suspension, preferably a fiber mass suspension |
| 06/03/2004 | WO2004046455A1 Method and apparatus for producing mechanical fibers |
| 06/03/2004 | WO2004045966A1 Food container |
| 06/03/2004 | WO2004027033A3 Lentiviral vector-mediated gene transfer and uses thereof |
| 06/03/2004 | US20040104002 For preparation of wood fibres for feeding fibres from a fibre separation at a first pressure to a drying at a second, lower pressure, whereby the system comprises a sluice feeder provided between the fibre separation and the drying |
| 06/02/2004 | EP1424434A1 Method of producing an aqueous fibre suspension from fibrous material |
| 06/02/2004 | EP1252388B1 Use of a compound for reducing and/or avoiding the build up of wood components |
| 06/02/2004 | CN1500936A Dissociating apparatus for papermaking raw material and method for dissociating papermaking raw material |
| 06/01/2004 | US6743332 Refining a wood chips with a bleaching liquor of hydrogen peroxidem, magnesium hydroxide and sodium carbonate, holding at 85-160 degrees c for 2-180 minutes to improve brightness |
| 05/27/2004 | US20040099584 System and method to separate cardboard components from bulk waste paper |
| 05/26/2004 | EP1422336A1 Process for making a flowable and meterable particulate material comprising densified cellulose fibers |
| 05/25/2004 | US6739533 Method for recovery of compression wood and/or normal wood from oversize chips |
| 05/25/2004 | CA2107239C Method for recycling plastic coated paper product waste and polymeric film |
| 05/20/2004 | US20040094646 Dissociating apparatus for papermaking raw material and method for dissociating papermaking raw material |
| 05/20/2004 | US20040094276 Particularly suitable for the recovery of waste, trimmings or other paper scrap, especially that which is produced around the yankee drier |
| 05/19/2004 | EP1420108A1 Apparatus and method for comminuting papermaking raw material |
| 05/19/2004 | DE10307201A1 Fiber suspension from recycled paper, for the production of writing and printing papers, has a feed of bulking agent before the final refining beating stage for improved retention |
| 05/19/2004 | DE10250763A1 Verfahren und Vorrichtung zur Flotation von Störstoffen aus einer wässrigen Faserstoffsuspension Method and apparatus for flotation of impurities from an aqueous fiber suspension |
| 05/18/2004 | US6736904 Resonant chamber that produces an ultrasonic energy field about a central axis of the chamber to separate contrary matter from a working material; utilizes a series of transducer elements to generate an ultrasonic transverse wave |
| 05/18/2004 | US6736054 Screw press |
| 05/15/2004 | CA2445919A1 Dissociating apparatus for papermaking raw material and method for dissociating papermaking raw material |
| 05/13/2004 | WO2004040058A1 Apparatus and method for production of pulp |
| 05/13/2004 | DE19948176B4 Flotationsvorrichtung zur Störstoff- insbesondere Druckfarbenentfernung aus Papierfasersuspensionen A flotation device for Störstoff- particular ink removal from paper fiber suspensions |
| 05/06/2004 | EP1416086A2 Method and device for removing contaminants by flotation from an aqueous fibrous suspension |
| 05/06/2004 | EP1415733A1 Used paper diaper processing method and used paper diaper processing device |
| 05/06/2004 | DE10248260A1 Paper industry shredder assembly has sieve drum around rotating shredder blades with hard metal cutting surfaces supported attached to a main frame |
| 05/06/2004 | DE10248259A1 Paper industry shredder assembly has rotor arms with cutting edges attached to main structure by screws inserted through pre-drilled holes |
| 04/29/2004 | US20040079499 Process for making a flowable and meterable densified fiber particle |
| 04/28/2004 | EP1214156B1 Sorting device for particles of differing sizes |
| 04/27/2004 | US6726028 De-inking screen |
| 04/22/2004 | WO2003014467A3 Production of pulp from cellulosic fibrous raw materials and recovery of chemicals and energy from pulp liquors |
| 04/15/2004 | US20040069693 Apparatus and method to separate elements or materials of different sizes |
| 04/14/2004 | EP1407073A1 Method of producing bleached thermomechanical pulp (tmp) or bleached chemithermomechanical pulp (ctmp) |
| 04/13/2004 | US6719880 Process for producing paper and absorbent products of increased strength |