| Patents for D21D 5 - Purification of the pulp suspension by mechanical means; Apparatus therefor (4,157) |
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| 06/14/1994 | CA1330206C Apparatus for screening a suspension of fibrous cellulose pulp |
| 06/14/1994 | CA1330205C Apparatus for screening a suspension of fibrous cellulose pulp |
| 06/09/1994 | CA2110863A1 Non-compressive loading of a screen basket for a pulp pressure screening apparatus |
| 06/08/1994 | CN1087560A Method and apparatus for separating paper fiber and plastics from mixed waste materials and products obtained thereby |
| 06/07/1994 | US5318186 Double screen basket apparatus |
| 06/07/1994 | CA1330052C Device for screening pulp and a blade for the screening device |
| 05/31/1994 | US5316675 Rotatable annular hollow disc for filtering liquids |
| 05/31/1994 | US5316621 Defibering, screening, dewatering, mixing with surfactant, foam flotation |
| 05/26/1994 | WO1994011109A1 Adjustable hydrocyclone |
| 05/26/1994 | WO1994011080A1 Papermaking apparatus including baffles |
| 05/20/1994 | CA2102861A1 Papermaking apparatus including baffles |
| 05/18/1994 | EP0597682A1 Removing fibres from pulp |
| 05/11/1994 | WO1994009909A1 Hydrocyclone plant |
| 05/11/1994 | EP0502848B1 Disk screen with compressible spacers and flanged surrounds |
| 05/11/1994 | CA2108321A1 Mechanical pulp fractionation with a spray disk filter |
| 05/10/1994 | CA1329383C Screen plates |
| 05/10/1994 | CA1329333C Method and apparatus for separating knots |
| 05/04/1994 | EP0594740A1 Method and apparatus for separating gas from a gaseous material |
| 05/04/1994 | EP0489738B1 Method and apparatus for treating fiber suspension |
| 05/03/1994 | US5308384 Withdrawal through outlet immediately adjacent to weir to minimize turbulence; cellulose pulp; papermaking |
| 05/03/1994 | US5307939 Hydrodynamic device for generating negative pressure excursions in a pump |
| 04/29/1994 | CA2081387A1 Variable stage pressure diffuser |
| 04/05/1994 | US5299747 Paper material screening/refining apparatus |
| 04/05/1994 | CA1328232C Apparatus for screening a suspension of fibrous cellulose material |
| 04/05/1994 | CA1328185C Method and means for facilitating the discharge of a drop leg or the like and treating pulp in said space |
| 03/22/1994 | US5296152 Apparatus for filtering suspensions and a method of operating the apparatus |
| 03/22/1994 | US5296143 Apparatus for filtering liquids |
| 03/22/1994 | US5296098 Method and device for separating a fibre suspension |
| 03/17/1994 | WO1994005852A1 Method and apparatus for treating pulp |
| 03/17/1994 | DE4337243A1 Sorting unit for particulate material - has symmetrical rotary sieve within housing having inlet located at end furthest from rotating drum bearing particle conveyor wings. |
| 03/16/1994 | CN2158885Y Pulp-residue separating machine for making paper |
| 03/15/1994 | US5293677 Process of making a cylindrical slotted sieve for paper pulp strainer |
| 03/15/1994 | CA2062957C Method and apparatus for treating fibre suspension |
| 03/10/1994 | DE4241770A1 Paper pulp suspension air removal - uses underpressure from cleaner reject for air removal |
| 03/09/1994 | EP0585418A1 Method and device for separating a suspension, preferably a fibre suspension. |
| 03/01/1994 | US5290401 Method and a device for separating plastic particles from supensions |
| 02/16/1994 | CN2156208Y Cylinder sieve plate for screening machine |
| 02/15/1994 | US5285560 Method for repairing a screen plate assembly |
| 02/09/1994 | EP0466755B1 Sectional screen cylinder |
| 02/09/1994 | EP0396721B1 Method of and device for fractionating suspensions |
| 02/03/1994 | DE4224727A1 Sieve basket for processing suspensions and pulps, e.g. in paper making - has pressure welded mounting points for the rings at the sieve rods for min. blockage |
| 02/02/1994 | EP0581631A1 Selective treatment of pulp with ozone |
| 02/02/1994 | CN1081484A Method for producing a delignified papermaking fiber from recycled, high lignin content, waste paper and product thereof |
| 02/01/1994 | CA2101188A1 Selective treatment of pulp with ozone |
| 01/31/1994 | CA2074988A1 Nozzle mounting in atmospheric diffusers |
| 01/20/1994 | WO1994001618A1 Screening apparatus for papermaking pulp |
| 01/06/1994 | WO1994000634A1 Pressure sorter for fibre suspensions |
| 01/06/1994 | WO1994000242A1 A cyclone separator |
| 12/23/1993 | WO1993025752A1 Screening of pulp |
| 12/21/1993 | US5271503 Screening device |
| 12/08/1993 | EP0572386A1 Improved wear screen plate and method of manufacture thereof. |
| 12/07/1993 | US5268077 Apparatus and method for deaerating or degassing a paper stock suspension |
| 12/07/1993 | US5267655 Method and apparatus for treating a gas containing aqueous fiber suspension |
| 12/07/1993 | CA1324908C Paper-making material deposition apparatus |
| 11/30/1993 | US5266198 Hydrocyclone with a shell mean determining tube embedded in the shell |
| 11/30/1993 | US5266160 Environmentally acceptable separation of gases from fiber suspension after bleaching |
| 11/25/1993 | WO1993023610A1 Apparatus and process for the sorting of a pulp suspension |
| 11/25/1993 | WO1993023609A1 Process and apparatus for the screening of a pulp suspension |
| 11/25/1993 | WO1993023135A1 Apparatus and process for pumping and separating a mixture of gas and liquid |
| 11/24/1993 | EP0570757A1 Method and apparatus for separating paper fiber and plastics from mixed waste materials and products obtained thereby |
| 11/23/1993 | US5264138 Method and apparatus for treating a fiber suspension |
| 11/16/1993 | CA1324344C Screen segment for filters for thickening fiber suspensions |
| 11/11/1993 | WO1993022494A1 Apparatus for treating fiber suspension |
| 11/09/1993 | US5259512 Screen for pressure sorters for fiber suspensions |
| 11/03/1993 | EP0456788B1 Sieve for a pressure sorting device for fibre suspensions |
| 11/02/1993 | US5257698 Cleaner for stock suspensions |
| 11/02/1993 | CA1323861C Pressure sorter |
| 11/02/1993 | CA1323789C Apparatus and methods for treating cellulosic fibers |
| 10/27/1993 | CN1022582C Method and apparatus for machining sieve plate |
| 10/26/1993 | US5255791 End rim of cylindrical sieve for paper pulp strainer and classifier and process, of making it |
| 10/26/1993 | US5255790 Screening apparatus |
| 10/26/1993 | US5255788 Pressure sorter |
| 10/26/1993 | CA1323601C Apparatus for separating a suspension of fibrous cellulose pulp |
| 10/20/1993 | EP0566284A2 Method for producing a delignified papermaking fiber from recycled, high lignin content, waste paper and product thereof |
| 10/20/1993 | EP0424426B1 Method and apparatus for the removal of light material from a fiber suspension |
| 10/13/1993 | EP0509004B1 Screen plate for screening pulp |
| 10/12/1993 | CA2013132C Pump for and method of separating gas from a fluid to be pumped |
| 10/07/1993 | CA2234143A1 Blade-coated paper and method of preparation thereof |
| 10/06/1993 | EP0563523A2 Manifold for connecting hydrocyclones |
| 10/06/1993 | CN1022339C Basket profile for screens |
| 09/29/1993 | EP0562930A1 Screen cylinder for screening of paper making stock and method of manufacture |
| 09/28/1993 | CA1322534C Sieving apparatus for transferring, under superatmospheric pressure, of cellulose fibres from a suspending liquid flow to another flow |
| 09/15/1993 | EP0560753A1 Apparatus for treating pulp |
| 09/08/1993 | EP0558593A1 Hydrocyclone plant. |
| 09/01/1993 | EP0504161B1 Basket profile for screens |
| 09/01/1993 | EP0498822B1 Pulseless screen |
| 09/01/1993 | EP0475985B1 Method of and apparatus for separating heavy impurities from fiber suspensions in connection with pumping |
| 08/31/1993 | US5240621 Centrifuging |
| 08/31/1993 | US5240115 Field adjustable hydrocyclone |
| 08/24/1993 | CA1321551C Pressure knotter screening apparatus |
| 08/17/1993 | US5237154 Process for manufacturing a slotted hole screen |
| 08/17/1993 | US5236475 Papermaking apparatus including baffles |
| 08/14/1993 | CA2089438A1 Hydrocyclone conduits |
| 08/10/1993 | US5234550 Wall means having slots between adjacent bars for withdrawing liquid from particle material |
| 08/10/1993 | US5234480 Method and apparatus for decreasing problems caused by residual or reaction gases or gases harmful to a process |
| 08/05/1993 | WO1993015265A1 Method and device for separating a suspension, preferably a fibre suspension |
| 08/05/1993 | WO1993014860A1 Separation device and process |
| 08/05/1993 | CA2106207A1 Method and device for separating a suspension, preferably a fibre suspension |
| 08/04/1993 | EP0427802B1 Appliance for sorting and deflaking fibre suspensions |
| 08/04/1993 | EP0422069B1 Wave screen plate and manufacturing method |