| Patents for D21D 5 - Purification of the pulp suspension by mechanical means; Apparatus therefor (4,157) |
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| 01/07/1998 | EP0693976A4 Screening apparatus for papermaking pulp |
| 01/07/1998 | CN2272028Y Double-screen filter-press vacuum pulp cleaner |
| 01/07/1998 | CN2272027Y Double-screen filter press |
| 01/07/1998 | CN1169491A Papermaking screen |
| 01/06/1998 | US5705068 Feeding suspension to a disc filter |
| 12/31/1997 | WO1997049862A1 Method and apparatus for removing neutral buoyancy contaminants from a cellulosic pulp |
| 12/31/1997 | CN2271565Y Adjusting horizontal cotten stalk breaking and sand removing machine |
| 12/29/1997 | EP0814194A1 Papermaking screen |
| 12/29/1997 | EP0813630A1 Fractionator |
| 12/29/1997 | EP0662858B1 Sieve |
| 12/24/1997 | WO1997048493A1 Pulp decontamination apparatus and method of use |
| 12/23/1997 | CA2016865C Cone wear detection |
| 12/20/1997 | CA2194107A1 Papermaking screen |
| 12/17/1997 | EP0668796B1 Adjustable hydrocyclone |
| 12/16/1997 | US5697503 Screening sieves, notably for paper pulp |
| 12/10/1997 | EP0811088A1 A screen having inclined slots for use in a continuous digester |
| 12/03/1997 | EP0809731A1 Process for recovering raw materials from a flow of residual or collected materials during paper manufacture and plant therefor |
| 12/03/1997 | CN2269416Y Diversion self suction type sand removing defibering fiberizer |
| 12/02/1997 | US5692619 Apparatus for filtering suspensions |
| 11/26/1997 | EP0808941A1 Process to make a screening apparatus having slotted apertures and screening apparatus obtained by this process |
| 11/26/1997 | CN1165889A Papermaking screen |
| 11/19/1997 | EP0807709A1 Apparatus for screening a fibrous suspension |
| 11/13/1997 | DE19618529A1 Flotation process and devices for de-inking pulped waste paper |
| 11/12/1997 | EP0805890A1 Fibre suspension pressure sorting machine and sieve for such pressure sorting machines |
| 11/12/1997 | EP0594740B1 Method and apparatus for separating gas from a gaseous material |
| 11/06/1997 | WO1997041296A1 Device for separating contaminants from fibre pulp suspensions |
| 11/06/1997 | CA2266359A1 Device for separating contaminants from fibre pulp suspensions |
| 11/05/1997 | EP0805232A2 A method for preparing a blade-coated paper and a blade-coated paper product |
| 11/05/1997 | EP0805231A2 A method for preparing paper and a paper product |
| 10/29/1997 | EP0478762B2 Method and device for separating a fibre suspension |
| 10/23/1997 | WO1997039181A1 Method and apparatus for filling a pulp tower |
| 10/22/1997 | EP0801696A1 Screening arrangement |
| 10/21/1997 | US5679250 Pressurized screen arrangement |
| 10/09/1997 | WO1997030211A3 Screen |
| 10/08/1997 | EP0799347A1 Separating arrangement |
| 10/08/1997 | EP0799346A1 Separation of cellulosic and non-cellulosic fractions from paper products |
| 10/02/1997 | WO1997036044A1 Method and device at the pumping of a medium |
| 09/30/1997 | CA2038815C Device for separation of air from flotation slush |
| 09/18/1997 | WO1997034045A1 Paper pulp screen cylinder |
| 09/18/1997 | CA2248639A1 Paper pulp screen cylinder |
| 09/17/1997 | EP0795641A1 Papermaking screen |
| 09/17/1997 | EP0650542B1 Screening apparatus for papermaking pulp |
| 09/16/1997 | US5667642 Pulp slurry-handling press roll and twin and single roll slurry handling presses |
| 09/12/1997 | WO1997033036A1 Magnetic deinking of waste papers |
| 09/12/1997 | CA2248131A1 Magnetic deinking of waste papers |
| 09/11/1997 | DE19609316A1 Constructing screening unit with controllably non-uniform sorting slits |
| 09/10/1997 | EP0793750A1 Apparatus and process for screening a fibre suspension and process for producing paper utilizing the same |
| 09/09/1997 | US5665207 Strainer for paper making |
| 09/04/1997 | WO1997032079A1 Improved recovery of fine fibers from suspensions containing fibers and contaminants |
| 09/04/1997 | WO1997032078A1 Process and apparatus for controlling the purification and yield of fibers from a fiber suspension |
| 09/04/1997 | CA2247101A1 Process and apparatus for controlling the purification and yield of fibers from a fiber suspension |
| 09/04/1997 | CA2247032A1 Improved recovery of fine fibers from suspensions containing fibers and contaminants |
| 08/21/1997 | WO1997030211A2 Screen |
| 08/21/1997 | DE19635156A1 Manufacturing sieves for e.g. pulp and paper stock preparation |
| 08/21/1997 | CA2246677A1 Screen |
| 08/20/1997 | EP0558593B1 Hydrocyclone plant |
| 08/19/1997 | CA2118410C Apparatus for treating fiber suspension |
| 08/13/1997 | EP0705364B1 Cellulose pulps having improved softness potential and method of making such pulps |
| 08/05/1997 | US5653347 For separating substances from a fibre-liquid-suspension |
| 07/29/1997 | US5651809 From a suspension of a solid in a liquid, rotating vane in path of fluid flow, creation of low pressure area where gas accumulates |
| 07/29/1997 | US5651466 Swirl type foreign material removing machine and method of removing foreign material by the machine |
| 07/23/1997 | CN1035489C Pressurized screen arrangement |
| 07/16/1997 | EP0783375A1 Separator for removing impurities from a fluid |
| 07/16/1997 | CN2257831Y Fibre reclaiming machine |
| 07/15/1997 | US5647128 Method of manufacturing paper making screen plate |
| 07/09/1997 | EP0782643A1 Method and device for concentrating a suspension |
| 07/08/1997 | US5645724 Rotor-equipped cylindrical screens |
| 07/08/1997 | US5645229 Beating by shafts which having finger arms attached to split ring fasteners |
| 07/03/1997 | WO1997023688A1 Apparatus for processing fibre suspensions used for the production of paper or cardboard |
| 07/03/1997 | CA2240116A1 Apparatus for processing fibre suspensions used for the production of paper or cardboard |
| 07/02/1997 | EP0637348B1 Apparatus for treating fiber suspension |
| 07/02/1997 | CN2257301Y Sealed steam cooking device |
| 06/24/1997 | US5640994 Liquid reservoir |
| 06/19/1997 | DE19545859A1 High throughput fibrous pulp suspension of improved sorting effect |
| 06/17/1997 | US5639346 Magnetic removal of "stickies" from waste papers |
| 06/17/1997 | US5638960 Sieve |
| 06/12/1997 | WO1997020920A1 Novel xylanase composition and method for production thereof |
| 06/12/1997 | DE19649764A1 Waste paper pulping comminuter with easily exchangeable sieve parts |
| 06/12/1997 | DE19625726C1 Wire unit has sorting gaps for fibre suspension |
| 06/11/1997 | EP0777781A2 A pulp slurry-handling press roll, and twin roll and single roll slurry-handling presses |
| 06/05/1997 | WO1997020104A1 Method of manufacturing a wire screen product and a wire screen product |
| 06/05/1997 | WO1997020103A1 Screen cylinder |
| 06/05/1997 | CA2238510A1 Method of manufacturing a wire screen product and a wire screen product |
| 06/04/1997 | EP0711369B1 Method and apparatus for treating filler-containing material, such as recycled fibers |
| 06/04/1997 | EP0550741B1 Device and method for separating coarse particles from a fluid borne slurry |
| 05/28/1997 | EP0683833B1 Pressurized screen arrangement |
| 05/28/1997 | CN2254903Y High efficiency, multi-purpose machine for treating pulp and removing sands and impurities |
| 05/21/1997 | EP0774022A1 Method and apparatus for screening a fiber suspension |
| 05/20/1997 | US5630513 Apparatus for fractionating suspensions |
| 05/07/1997 | EP0771375A1 Method and apparatus for screening fibrous suspensions |
| 05/06/1997 | US5626235 Papermaking screen |
| 05/01/1997 | WO1997015717A1 Deaeration vessel |
| 04/29/1997 | US5624558 Method and apparatus for screening a fiber suspension |
| 04/26/1997 | CA2178683A1 A cylindric screen basket and a method of making same |
| 04/24/1997 | DE19601295A1 Manufacturing sieves for stock fractionating in paper-making |
| 04/24/1997 | DE19601294A1 Prodn of a sieve for fibre pulp suspensions |
| 04/22/1997 | US5622625 Method of manufacturing a drum |
| 04/22/1997 | US5622267 Method and pressure screen for screening fibre suspension |
| 04/17/1997 | WO1997013919A1 Screening arrangement |
| 04/17/1997 | WO1997013918A1 Screening arrangement |