| Patents for D21D 5 - Purification of the pulp suspension by mechanical means; Apparatus therefor (4,157) |
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| 07/02/2002 | CA2261664C Perfected reactor for liquids purification |
| 07/02/2002 | CA2261660C Baffle for reactors used for liquids purification |
| 06/27/2002 | US20020079072 Process for manufacturing screens suitable for use in wet screening fibrous paper suspensions |
| 06/27/2002 | DE10065931A1 Verfahren zur Herstellung von bei der Nasssiebung von Papierfasersuspensionen verwendbaren Sieben A process for producing in the wet screening of paper fiber suspensions usable Seven |
| 06/27/2002 | DE10060822A1 Drucksortierer zum Entfernen von Störstoffen aus einer störstoffhaltigen Papierfasersuspension Pressure screen for removing contaminants from a paper stock containing foreign fiber suspension |
| 06/26/2002 | EP1217122A1 Process for making screens for cleaning of paper pulp |
| 06/25/2002 | US6409880 Apparatus and process for removing fine impurities from a fibrous suspension |
| 06/25/2002 | US6409023 Process and device for fractioning a suspension containing paper fibers |
| 06/22/2002 | CA2365792A1 Process for manufacturing screens suitable for use in wet screening fibrous paper suspensions |
| 06/19/2002 | EP1215335A1 Pressure screen for cleaning paper pulp containing impurities |
| 06/19/2002 | CN1354812A Method and apparatus for preparing paper pulp from used paper |
| 06/19/2002 | CN1354698A Papermaker's screen cylinder with helix screen element |
| 06/13/2002 | US20020069985 Unsusceptible to clogging impurities; screening quality |
| 06/07/2002 | CA2364728A1 Pressurized screen and process for removing contaminants from a fibrous paper suspension containing contaminants |
| 06/04/2002 | US6398969 Hydrocyclone and process for removing foreign substances from a liquid |
| 05/29/2002 | EP1209282A1 Process for milling a fibrous material |
| 05/29/2002 | EP1161308A4 Papermaker's screen cylinder with helix screen element |
| 05/23/2002 | US20020060027 Device for deaerating of fiber stock suspensions |
| 05/23/2002 | DE10057682A1 To smooth out the characteristics of suspended paper fibers, the suspension is separated into fractions at a wet sieve followed by wet grinding, with measurements at the overflow of the density of solids to set the grinding action |
| 05/21/2002 | US6391153 Process and apparatus for the production of cellulose pulps of improved quality |
| 05/16/2002 | US20020056532 At least one of wires in dewatering section travels along convex path arranged so as to make dewatering more efficient at forward end of dewatering section than at tail end thereof |
| 05/15/2002 | EP1205227A1 Method of making filtering baskets of machines for filtering fibers in aqueous suspension and filtering basket made by this method |
| 05/14/2002 | US6387210 Method of making sanitary paper product from coarse fibers |
| 05/09/2002 | US20020053536 Connection device for connecting a hydrocyclone |
| 05/02/2002 | WO2002034357A1 Slotted screen device |
| 05/02/2002 | EP1200168A1 Degassing centrifugal apparatus with energy recovery, process for degassing a fluid and process for producing paper or board |
| 05/02/2002 | DE10052715A1 Spaltsiebanordnung Slotted screen |
| 05/02/2002 | CA2426719A1 Slotted screen device |
| 04/25/2002 | WO2002033166A1 Method and screen for screening at least two pulp mixtures |
| 04/25/2002 | WO2002033165A1 Method and apparatus and screen for screening mechanical fibre pulp |
| 04/25/2002 | CA2425511A1 Method and apparatus and screen for screening mechanical fibre pulp |
| 04/24/2002 | EP1198637A1 Screening apparatus with slotring moveable in axial direction |
| 04/24/2002 | CN1346416A Method for production of paper or cardboard |
| 04/17/2002 | CN1083038C Papermaking screen |
| 04/11/2002 | WO2002029342A1 Method and apparatus for separation of steam and gas from possibly glue-coated fibre pulp produced by a refiner |
| 04/11/2002 | DE10047431A1 Particulate separation unit for aqueous solutions, comprises housing with inlet pipe for sludge, outlet, sifting member, vibrating unit, and support elements |
| 04/11/2002 | CA2417673A1 Method and apparatus for separation of steam and gas from possibly glue-coated fibre pulp produced by a refiner |
| 04/04/2002 | WO2002026348A1 Device for separating particulate solid materials from an aqueous turbid medium by sifting |
| 03/27/2002 | EP1191141A1 Hydrocyclone |
| 03/26/2002 | US6361650 Process for upgrading of thermomechanical pulp to higher quality pulp |
| 03/26/2002 | US6360897 Screen device comprising two screen chambers for separating fiber suspensions |
| 03/21/2002 | WO2002022947A1 Method and equipment for pulp fractionation in a paper or board machine |
| 03/21/2002 | WO2002022946A1 Deaeration system for feeding stock into a headbox of a paper machine or equivalent |
| 03/18/2002 | CA2319957A1 Strainer for a screw press dewatering apparatus |
| 03/14/2002 | WO2001089702A3 Method and system for utilising waste |
| 03/06/2002 | EP1184510A1 Device for connecting an hydrocyclone |
| 03/06/2002 | EP1184509A1 Screening apparatus for fiber suspension |
| 03/06/2002 | EP1183419A1 Method and apparatus for preparing paper pulp from used paper |
| 03/06/2002 | CN1080350C Screening device, such as screen cylinder, and manufacture of screen device |
| 02/21/2002 | DE10038282A1 Hydrocyclone, to clean and degas a paper fiber suspension, has a double pipe assembly for the light fraction with a conical taper within the outer pipe at the entry into the inner pipe |
| 02/20/2002 | CN2477688Y Pulp cyclone grit catcher |
| 02/16/2002 | CA2355407A1 Connection device for connecting a hydrocyclone |
| 02/14/2002 | US20020017370 Pretreatment of chips before cooking |
| 02/14/2002 | DE10045454A1 Sieve for sorting a wet paper fiber suspension has sieve rods with structured and angled end surfaces, to overlap each other and form sorting slits between them to give a trouble-free action even with fine slits and a high throughput |
| 02/13/2002 | CN1335916A Method and apparatus for pumping a material and a rotor for use in connection therewith |
| 02/07/2002 | WO2002009844A1 Screening method and apparatus |
| 02/05/2002 | US6344112 Screen having inclined slots for a digester |
| 01/31/2002 | US20020011318 Hybrid multistage forward cleaner system with floation cell |
| 01/29/2002 | CA2073752C Pressure sorter |
| 01/22/2002 | US6340805 Method of manufacturing a wire screen product |
| 01/22/2002 | US6340407 Process of making recycled linerboard or Kraft paper from old corrugated container |
| 01/22/2002 | CA2176435C Absorbent granular material and process and apparatus for making the absorbent granular material |
| 01/15/2002 | US6338412 Cylindrical screen, particularly for paper pulp |
| 01/09/2002 | EP1170417A1 Method for pulping and cleaning of waste paper containing impurities |
| 01/09/2002 | EP0961852B1 Pump for fibrous pulp suspension with means for separating gas from the suspension |
| 01/09/2002 | EP0958432B1 A wire screen product |
| 01/09/2002 | CN1077634C Screening drum or plate and method of screening size |
| 01/03/2002 | WO2002000999A1 Method to manufacture paper using fiber filler complexes |
| 01/02/2002 | EP1167621A1 Hydrocyclone system |
| 01/02/2002 | EP1166882A2 Hydrocyclone |
| 01/02/2002 | EP1165882A1 Screening apparatus including two screen means |
| 01/02/2002 | EP1165879A1 Method and apparatus for treating pulp |
| 01/02/2002 | EP0958433B1 Deaeration vessel |
| 01/02/2002 | EP0958431B1 Screen cylinder |
| 12/27/2001 | US20010054590 Fiber mat is formed on a screen cylinder of a pressurized fiber filtering device used to filter particles from a liquid stream; formed by injecting cellulosic fibers into the liquid stream flowing into the fiber filtering device. |
| 12/25/2001 | US6332542 Tramp material removal from pulp feed system |
| 12/20/2001 | US20010052486 Hydrocyclone device |
| 12/20/2001 | CA2350170A1 Hydrocyclone device |
| 12/19/2001 | CN2466203Y Light pump purifier |
| 12/19/2001 | CN2466202Y Reverse light pulp purifying device |
| 12/18/2001 | CA2159166C Method of making a screen cylinder, and a screen cylinder |
| 12/14/2001 | CA2347418A1 Improved filtration of pulp mill liquids |
| 12/13/2001 | US20010050253 Screening device, such as a screen cylinder, and method of manufacture of the screening device |
| 12/12/2001 | EP1161308A1 Papermaker's screen cylinder with helix screen element |
| 12/12/2001 | EP0928223A4 Through-flow cleaner with improved inlet section |
| 12/12/2001 | EP0912796B1 Method and apparatus for filling a pulp tower |
| 12/05/2001 | EP1159482A1 Screening apparatus |
| 12/05/2001 | EP1159481A1 Upgrading of tmp to an sc/lwc quality |
| 11/29/2001 | WO2001089702A2 Method and system for utilising waste |
| 11/29/2001 | US20010045379 Screen |
| 11/29/2001 | DE10120885A1 Degassing a paper/cardboard fiber suspension measures the pressures in the vessel and the take-off channel to correct the vessel level and the suspension density |
| 11/29/2001 | CA2409543A1 Method and system for utilising waste |
| 11/28/2001 | EP1157161A1 Screen and method for manufacturing a reinforcement element for a screen plate |
| 11/21/2001 | EP1155185A1 Method and means for paper pulp filtering |
| 11/13/2001 | US6315128 Tramp material removal from pulp feed systems |
| 11/13/2001 | US6315127 System and method for removing particulate contaminants from fluid streams |
| 11/13/2001 | CA2266822C Screen plate in a cellulose pulping vessel |
| 11/08/2001 | US20010037866 Process for dispersing a fibrous paper stock and device for performing the process |
| 11/07/2001 | CN1320741A Screen mesh |
| 11/06/2001 | US6311850 Pressure screening apparatus for screening a paper stock suspension and screen clearer for such a screening apparatus |