| Patents for D21D 5 - Purification of the pulp suspension by mechanical means; Apparatus therefor (4,157) |
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| 04/15/1997 | CA2067108C Basket profile for screens |
| 04/15/1997 | CA2060074C Apparatus for treating fiber suspension |
| 04/10/1997 | WO1997013027A1 Cleaner with inverted hydrocyclone |
| 04/08/1997 | US5618424 Rotary drum type device for separating solid particles from a liquid |
| 04/03/1997 | WO1997012093A1 Sorting device |
| 04/01/1997 | US5615997 Pump for pumping fibrous pulp suspension |
| 04/01/1997 | CA2045333C Wall means |
| 03/27/1997 | DE19535619A1 Sortiervorrichtung Sorter |
| 03/26/1997 | EP0764737A1 Papermaking screen |
| 03/26/1997 | EP0764736A2 Foil for screening apparatus |
| 03/19/1997 | CN2249765Y Cotton stalk beating and sand removing machine |
| 03/18/1997 | US5611434 Rotor for a screen grader |
| 03/13/1997 | WO1997009482A1 Pump for fibrous pulp suspension with means for separating gas from the suspension |
| 03/12/1997 | EP0623046B1 Separation device and process |
| 03/04/1997 | US5607589 Multiple contour screening |
| 03/04/1997 | US5607587 Screening apparatus for wood pulp |
| 02/27/1997 | WO1997006871A1 Extended dwell reverse hydrocyclone cleaner |
| 02/25/1997 | US5605234 Paper making screen plate |
| 02/20/1997 | WO1997005957A1 Forward or reverse hydrocyclone systems and methods |
| 02/20/1997 | CA2228440A1 Forward or reverse hydrocyclone systems and methods |
| 02/19/1997 | CN1143131A Method for removing resin from mixing tropical hard wood pulp |
| 02/12/1997 | CN1142858A Apparatus for washing of pulp |
| 02/11/1997 | US5601690 Introducing pulp slurry into zone between rotor impeller and screen, operating rotor so portion of slurry passes through screen, monitoring to determine specified parameter, adjusting clearance between rotor and screen in response |
| 02/11/1997 | US5601192 Pressure sorter for fiber suspensions |
| 02/11/1997 | CA2049279C Screen plates and methods of manufacture |
| 02/06/1997 | WO1997004165A1 Method and device for treating a pulp suspension |
| 01/28/1997 | US5597447 Blade-coated paper having a paper lamina produced from a furnish comprising recycled corrugated containers |
| 01/28/1997 | US5597075 Method and apparatus for screening waste paper pulp |
| 01/23/1997 | WO1997002384A1 Sealing device |
| 01/23/1997 | CA2220298A1 Sealing device |
| 01/22/1997 | EP0615469B1 Hydrocyclone with turbulence creating means |
| 01/21/1997 | US5595307 Method of making a screen cylinder, and a screen cylinder |
| 01/15/1997 | EP0753622A1 Method for separating contaminants from paper fibres and device for carrying out this method |
| 01/15/1997 | EP0623056B1 Hydrocyclone plant |
| 01/14/1997 | US5593098 Apparatus for and method of pulping waste paper |
| 01/14/1997 | CA2180817A1 Process for the recovery of paper fibers and contaminants and apparatus for using same |
| 01/02/1997 | EP0751253A2 Absorbent granular material and process and apparatus for making the absorbent granular material |
| 12/24/1996 | US5587078 Centrifugal cleaner |
| 12/24/1996 | US5587077 Screen cylinder or plate having a grooved first face and a stepless second face |
| 12/24/1996 | US5587048 Pulp and paper products produced from recycled, high lignin content, waste paper |
| 12/24/1996 | US5586662 Basket for a paper-making screen and method for producing same |
| 12/12/1996 | WO1996039558A1 Multiple contour screening |
| 12/12/1996 | WO1996032591A3 Pump for conveying a moist pulp |
| 12/11/1996 | EP0646199B1 Pressure sorter for fibre suspensions |
| 12/10/1996 | US5582728 Pressure washer drum |
| 12/10/1996 | US5582685 Method for producing a cellulose pulp of selected fiber length and coarseness by a two-stage fractionation |
| 12/05/1996 | DE19547585A1 Sieving element |
| 12/04/1996 | CN1137242A Device for admixing processing agent to pulp suspension |
| 12/03/1996 | US5580446 Screen, vortex apparatus for cleaning recycled pulp and related process |
| 11/28/1996 | WO1996037655A1 Screen and method of manufacture |
| 11/26/1996 | CA2060503C Method and device for separating a fibre suspension |
| 11/20/1996 | EP0742855A1 Apparatus for treating pulp |
| 11/19/1996 | US5575395 Method and apparatus for screening fibrous suspensions |
| 11/13/1996 | EP0741817A1 Method and apparatus for treating recycled pulp |
| 11/05/1996 | US5571384 Method and arrangement for the treatment of a fiber suspension |
| 10/23/1996 | EP0738531A2 Rotary drum type device for separating solid particles from a liquid |
| 10/22/1996 | US5566835 Cleaner with inverted hydrocyclone |
| 10/22/1996 | US5566833 Pressure sorter for fiber suspensions as well as a process for the preparation of fiber suspensions |
| 10/22/1996 | CA2022164C Device for screening fiber suspensions |
| 10/17/1996 | WO1996032591A2 Pump for conveying a moist pulp |
| 10/17/1996 | WO1996032203A1 Wood chip screening apparatus with blades having nonlinear top edges |
| 10/17/1996 | CA2217724A1 Pump for conveying a moist pulp |
| 10/17/1996 | CA2215845A1 Wood chip screening apparatus with blades having nonlinear top edges |
| 10/15/1996 | US5564572 Method and apparatus for screening waste paper pulp |
| 10/09/1996 | EP0735918A1 Device for admixing a processing agent to a pulp suspension |
| 10/09/1996 | EP0735913A1 Apparatus and process for pumping and separating a mixture of gas and liquid |
| 10/03/1996 | WO1996030587A1 Fibresaver screen basket support |
| 10/01/1996 | US5560818 Adjustable orifice for gas-sparged hydrocyclone |
| 09/25/1996 | EP0733734A2 Straining method and screen |
| 09/19/1996 | WO1996028608A1 Fractionator |
| 09/19/1996 | CA2213708A1 Fractionator |
| 08/29/1996 | WO1996026315A1 A screen having inclined slots for use in a continuous digester |
| 08/29/1996 | DE19506084A1 Wire unit for suspensions, e.g. pulp or sludge |
| 08/22/1996 | WO1996025551A1 Process for recovering raw materials from a flow of residual or collected materials during paper manufacture and plant therefor |
| 08/22/1996 | CA2211573A1 Process for recovering raw materials from a flow of residual or collected materials during paper manufacture and plant therefor |
| 08/21/1996 | EP0726981A1 Arrangement in a pressure screen for separating impurities from a fibre suspension fed into the screen |
| 08/20/1996 | US5547083 Apparatus for treating fiber suspension |
| 08/20/1996 | CA2052012C Method and an apparatus for separating gas from solids-containing liquid |
| 08/08/1996 | WO1996023930A1 Fibre suspension pressure sorting machine and sieve for such pressure sorting machines |
| 08/06/1996 | CA2076740C Screen apparatus for paper making |
| 08/06/1996 | CA2052511C Strainer for paper making |
| 08/06/1996 | CA2049443C Apparatus for pressurized screening of a fibrous material liquid suspension |
| 08/06/1996 | CA2012936C Screening device for slurries |
| 07/31/1996 | EP0724037A2 Paper making screen plate |
| 07/23/1996 | US5538594 Method for producing a blade coated paper from recycled, high lignin content, waste paper |
| 07/17/1996 | EP0721528A1 Fractionator |
| 07/17/1996 | EP0721526A1 Method and apparatus for dewatering of a fibre suspension |
| 07/10/1996 | CN2230771Y Adjustable full-dissociation sand removing apparatus |
| 07/09/1996 | CA2049354C Sectional screen cylinder |
| 07/03/1996 | EP0719890A2 Method of manufacturing paper making screen plate and paper making screen plate |
| 06/29/1996 | CA2151856A1 Method of manufacturing paper making screen plate and paper making screen plate |
| 06/27/1996 | WO1996019614A1 Separating arrangement |
| 06/27/1996 | WO1996019612A1 Separation of cellulosic and non-cellulosic fractions from paper products |
| 06/27/1996 | WO1996019276A1 Apparatus and process for separating a mixture of gas and liquid |
| 06/27/1996 | CA2207053A1 Separating arrangement |
| 06/19/1996 | EP0716720A1 Apparatus for fractionating suspensions |
| 06/19/1996 | EP0527884B1 Hydrocyclone plant |
| 06/18/1996 | US5527473 Process for performing reactions in a liquid-solid catalyst slurry |
| 06/18/1996 | US5527426 Magnetic deinking of waste papers |
| 06/13/1996 | WO1996017998A1 Screening arrangement |