| Patents for D21B 1 - Fibrous raw materials or their mechanical treatment (6,805) |
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| 11/28/2002 | WO2002095129A1 Printing paper |
| 11/28/2002 | US20020175113 Method and apparatus for sorting of chips |
| 11/27/2002 | EP1095182B1 Method, apparatus and plant for the recovery of wood fibre from compressed fibreboard scrap |
| 11/21/2002 | DE3991215C2 Verfahren zur Herstellung von Gegenständen aus einem fluidisierten Faserrohstoff A process for the manufacture of objects from a fluidized fiber raw material |
| 11/14/2002 | US20020166910 Pulper for a fiber stock preparation system |
| 11/07/2002 | DE10121980A1 Method for loosening dyestuffs on fibers in water, comprises use of at least two vertical walls which are identically oscillated in a horizontal direction while a stream of air bubbles passes through the water |
| 11/07/2002 | DE10121324A1 Verfahren zur Herstellung einer Faserstoffsuspension aus papierhaltigem Material A process for producing a fibrous material suspension from papierhaltigem |
| 11/06/2002 | EP1254986A1 Process for making pulp from papercontaining material |
| 11/06/2002 | EP1254020A1 Screw press |
| 11/06/2002 | EP0928350B1 Baffle for reactors used for liquids purification |
| 11/06/2002 | CN1378611A Method for minimising new water use in water circulation system of a treatment plant |
| 11/05/2002 | US6475337 Flotation of pulp suspension in de-inking; injection of air; mixing air and pulp suspension; feeding into subsequent cell and repeating; waste paper treatment; recycling |
| 10/31/2002 | WO2002086229A1 Production of fiber suspension from waste paper |
| 10/31/2002 | WO2002086228A1 Process for producing pulp and energy from grassland cropping systems |
| 10/30/2002 | EP1252388A2 Method for reducing and/or avoiding the build up of wood components |
| 10/24/2002 | WO2002084019A1 Method and apparatus for the feeding of fibres |
| 10/23/2002 | EP1007227B1 Roller device to separate chips and particles of different gradings, and the relative forming machine employing the device |
| 10/23/2002 | CN1376090A Method and device for processing pulp |
| 10/23/2002 | CN1375578A Bamboo fiber and its making process |
| 10/17/2002 | US20020148573 Method for removing wax from a pulp furnish |
| 10/16/2002 | EP1248880A1 Method and device for sorting a mixture of paper |
| 10/15/2002 | US6464826 Volatile organic substances separated in the cyclone can be separated and heat associated with the steam separated in the cyclone can be recovered |
| 10/15/2002 | CA2137461C A method for manufacturing low bark content wood chips from whole-tree chips |
| 10/10/2002 | DE10116368A1 Verfahren zur Aufbereitung von holzstoffhaltigem Altpapier A method for treating waste paper holzstoffhaltigem |
| 10/10/2002 | DE10114341A1 Milling and bleaching natural cellulosic material, giving products used for paper or cardboard manufacture or as a dietary fiber, comprises hydrogen peroxide treatment at high solids level in a hammer or centrifugal mill |
| 10/09/2002 | EP1247892A2 Treatment of wood-containing waste paper |
| 10/08/2002 | US6461472 Explosively-split fragments obtained by water-vapor explosion of wooden source materials, wooden material containing such fragments as its aggregate, their manufacturing methods and machines |
| 10/03/2002 | US20020139494 Recovery of fibers from a fiber processing waste sludge |
| 10/02/2002 | EP1244838A1 De-inked product |
| 10/02/2002 | EP1058582A4 Improvements to papermaking refiner plates |
| 10/02/2002 | DE10146512C1 Separation and sorting system for waste material containing old wood includes sifting station and magnetic separator for tramp iron and has vertical material separation channel |
| 10/02/2002 | CN1372611A Method for production of mechanical pulp |
| 10/01/2002 | US6458245 CTMP-process |
| 10/01/2002 | US6458240 Method for removing contaminants from fibers in recycle fiber pulping |
| 09/26/2002 | WO2002075041A1 Grinding element and grinder stone |
| 09/26/2002 | WO2002075040A1 Grinding segment and grinder stone |
| 09/25/2002 | EP1242673A1 Method of forming and metering fluff pulp |
| 09/25/2002 | EP0796153B1 An elastomeric joint for a blade tensioning mechanism |
| 09/25/2002 | CN2512804Y Automatic explosion pulp making technology device |
| 09/19/2002 | US20020132121 Method of recycling bonded fibrous materials and synthetic fibers and fiber-like materials produced thereof |
| 09/18/2002 | EP0963251B1 Feeding device for fibrous material |
| 09/12/2002 | WO2002070816A2 Electrical field apparatus and methods for fluid for decontamination and other purposes |
| 09/12/2002 | WO2002070063A2 Method and apparatus for the generation of ultrasonic energy fields within circular structures containing a liquid |
| 09/11/2002 | EP1239074A1 Process for producing satinated paper |
| 09/11/2002 | EP1238139A1 Method in connection with the production of mechanical pulp |
| 09/11/2002 | EP0941385B1 Method of modifying pulp from recycled newspapers |
| 09/11/2002 | CN2510519Y Energy-saving hydraulic pulper |
| 09/05/2002 | US20020121352 Electrical field apparatus and methods for fluid for decontamination and other purposes |
| 09/05/2002 | US20020121285 Method and apparatus for the generation of ultrasonic energy fields within circular structures containing a liquid |
| 09/04/2002 | EP1002154B1 Method of pretreating lignocellulose fiber-containing material for the pulp making process |
| 08/28/2002 | EP1084290B1 Pulper |
| 08/28/2002 | EP0966563B1 Method to obtain wood fibres |
| 08/22/2002 | WO2002065117A1 Method of selecting wood for mechanical pulping |
| 08/22/2002 | US20020112542 Method of selecting wood for chemical pulping |
| 08/21/2002 | EP1232303A1 Pulp machine for defibering raw materials such as paper, cardboard or cellulose |
| 08/21/2002 | EP1080265B1 Method and device for flotation of pollutants from an aqueous fibrous material suspension |
| 08/20/2002 | US6436238 Alkaline fine papermaking at neutral ph using chemical and mechanical pulps; high conductivity stabilization of wet end and enhanced water removal |
| 08/20/2002 | US6436231 Preparing individual treated fibers from mat; curing with such as citric acid; themobonding agent such as bicomponent core and sheath of polypropylenes with different melting points; high wet strength web; absorbent |
| 08/15/2002 | WO2002062493A1 Apparatus and method to separate elements or materials of different sizes |
| 08/15/2002 | US20020108727 Adding waste paper to an autoclave, adding deinking and defibrating solutions and pressurization; pressure increases penetration; recycling paper |
| 08/14/2002 | EP1231320A2 Device for cutting and separating toilet paper scraps |
| 08/14/2002 | EP0692043B1 Process and enzyme preparation for preparing mechanical pulp |
| 08/13/2002 | CA2371519A1 Method of selecting wood for chemical pulping |
| 07/30/2002 | US6425982 System for removing bleed-throughs from old corrugated container fiber pulp |
| 07/30/2002 | CA2104962C Recycling waste cellulosic material |
| 07/25/2002 | US20020096270 Waste paper and fiber processing methods and apparatus |
| 07/25/2002 | US20020096269 Method for removing contaminants from fibers in recycle fiber pulping |
| 07/24/2002 | CN1359866A Paper pulp ash and its preparing process |
| 07/23/2002 | CA2084375C Screening method and apparatus |
| 07/17/2002 | EP0944758B1 Arrangement for feeding wood in a pulp grinder |
| 07/16/2002 | US6419792 Photocatalytic pulp composition |
| 07/16/2002 | US6419787 Process for recycling paper broke containing wet strength additives |
| 07/16/2002 | US6419786 Dispersing zone; dehydration, pretreatment, supplying steam |
| 07/16/2002 | CA2175686C Apparatus, system and method for treating process material such as waste material |
| 07/10/2002 | EP1220963A1 Method for minimising the new water use in the water circulation system of a treatment plant |
| 07/03/2002 | CN2498192Y Energy-saving high-concentrated pulp crusher |
| 07/02/2002 | US6413366 Method and device for flotation of pollutants from an aqueous fibrous material suspension |
| 07/02/2002 | US6413364 Steaming, pressurization and separation; reuse as paper, cardboard or mulch |
| 07/02/2002 | US6413362 Hammer milling to introduce twists, crimping or other deformations, forming high strength and low density wood used as tissue, distribution layers and filter papers |
| 07/02/2002 | CA2261664C Perfected reactor for liquids purification |
| 07/02/2002 | CA2261660C Baffle for reactors used for liquids purification |
| 07/02/2002 | CA2257041C Bar screen system with attached screens |
| 06/27/2002 | US20020079074 Feather processing method and product |
| 06/25/2002 | US6409880 Apparatus and process for removing fine impurities from a fibrous suspension |
| 06/25/2002 | US6409798 Process for recovering metal material from waste material |
| 06/25/2002 | CA2202714C Process for increasing the degree of whiteness of paper fiber pulp |
| 06/20/2002 | US20020074021 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 |
| 06/19/2002 | EP1215334A1 Process for pulping and cleaning of fibrous material containing impurities in particular waste paper |
| 06/19/2002 | EP1214156A2 Sorting device for particles of differing sizes |
| 06/19/2002 | CA2372303A1 Pulp heating apparatus |
| 06/16/2002 | CA2365088A1 Process for the breaking and cleaning of contaminant-containing raw paper stocks, in particular of recovered paper |
| 06/14/2002 | CA2328259A1 Decontamination of waste papers |
| 06/13/2002 | US20020070167 Birch bark processing and the isolation of natural products from birch bark |
| 06/13/2002 | US20020069982 Process for producing paper and absorbent products of increased strength |
| 06/13/2002 | US20020069981 Extracting wood particulates with solvent under pressure to reduce pitch and volatile organic compound content without dissolution of lignin and wood cellulose; mixing with liquor having chemical reactants, to react with lignin |
| 06/11/2002 | US6402887 Biopulping industrial wood waste |
| 06/11/2002 | US6401937 Apparatus and method to separate corrugated paper from commingled waste |
| 06/11/2002 | US6401635 Liquid carton waste material recycling process and apparatus for recycling liquid carton waste material |
| 06/11/2002 | CA2196318C Machine for destructuring wood chips |
| 06/06/2002 | WO2002044465A2 Apparatus for disintegrating and compacting cellulose containing material |