| Patents for D21D 5 - Purification of the pulp suspension by mechanical means; Apparatus therefor (4,157) |
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| 05/30/1984 | EP0109409A1 Method and device for manufacturing cellulose pulp |
| 05/30/1984 | EP0109396A1 Screen plate, screw press or the like for treatment of a suspension. |
| 05/29/1984 | US4451358 Noncircular rejects outlet for cyclone separator |
| 05/22/1984 | CA1167803A1 Separator for a mixture of a suspension and coarse heavy particles |
| 05/16/1984 | EP0108058A1 Hydrocyclone featuring hydraulic jump in overflow passage |
| 05/08/1984 | US4447320 Device for cleaning and recovering paper pulp |
| 05/02/1984 | EP0107094A2 Apparatus and method for providing deaerated stock to a processing machine |
| 05/02/1984 | EP0106908A1 Multilayer filter material, process for making it and its use |
| 04/25/1984 | EP0106331A2 Process and apparatus for separating coarse particles from a liquid |
| 04/17/1984 | US4443357 Hydrophobic silica or silicate, compositions containing the same and methods for making and using the same |
| 04/17/1984 | US4443296 Extraction, suspension, agitation |
| 04/17/1984 | US4443232 Deaerated liquid stock supply |
| 04/10/1984 | US4441999 In cellulose and paper industry |
| 04/10/1984 | CA1165280A1 Modular gable clamped drum strainer |
| 04/04/1984 | EP0105037A2 A vortex cleaner |
| 03/20/1984 | US4437984 Multiple hydrocyclone apparatus |
| 03/06/1984 | US4435193 Controlling operation of a centrifugal pump |
| 03/06/1984 | CA1163236A1 Dual flow screening apparatus |
| 02/15/1984 | EP0100345A1 Screen machine. |
| 01/31/1984 | CA1161397A1 Specific surface fractionator |
| 01/24/1984 | US4427541 Method and apparatus for spray fractionation of particles in liquid suspension |
| 01/24/1984 | CA1160962A1 Sand trap for liquids used in the manufacture of cellulosic pulp |
| 01/18/1984 | EP0098270A1 Method and apparatus in screening fibre suspensions. |
| 01/17/1984 | CA1160576A1 Method and apparatus for centrifugal separation |
| 12/27/1983 | CA1159404A1 Vortex separator with central tengential heavies outlet and upper-most lights outlets |
| 12/27/1983 | CA1159403A1 Centrifugal separator |
| 12/27/1983 | CA1159398A1 Buoyant separation means for rejects side of cylindrical screens |
| 12/21/1983 | EP0096562A2 Reverse centrifugal cleaning of paper making stock |
| 12/21/1983 | EP0096041A1 Method of preventing clogging a screening means |
| 12/20/1983 | CA1158904A1 Method and means for use in the manufacture of fibre pulp |
| 12/13/1983 | CA1158570A1 Method and apparatus for separating a gas from a fibre suspension |
| 12/06/1983 | US4419109 Means for degassing paper pulp stock |
| 11/30/1983 | EP0095382A2 Improvements in and relating to cyclone separators |
| 11/24/1983 | WO1983003986A1 Hydrocyclone featuring hydraulic jump in overflow passage |
| 11/16/1983 | EP0094061A2 Apparatus for dissolution of pulp |
| 11/16/1983 | EP0094022A2 Rotor for a screening apparatus for the purification of pulp suspensions, particularly in the paper industry |
| 11/15/1983 | CA1156975A1 Center flow screening apparatus |
| 11/10/1983 | WO1983003857A1 Method and apparatus for spray fractionation of particles in liquid suspension |
| 11/10/1983 | WO1983003856A1 Method and device for manufacturing cellulose pulp |
| 11/09/1983 | EP0093187A1 Screen drum for a pulp stock screening apparatus |
| 11/08/1983 | CA1156609A1 Apparatus for screening paper fiber stock |
| 10/18/1983 | US4410424 Screening apparatus for paper making stock |
| 10/18/1983 | US4410337 Method and an apparatus for separating a gas from a fibre suspension |
| 10/12/1983 | EP0090928A2 Multiple hydrocyclone apparatus |
| 09/27/1983 | CA1154403A1 Pulse free stock screen and combination pump |
| 09/21/1983 | EP0089164A2 Screening apparatus for paper making stock |
| 09/20/1983 | US4405450 Method for fractionating fiber stock obtained from waste paper and apparatus for the performance of the aforesaid method |
| 09/20/1983 | CA1153962A1 Apparatus for treatment of suspensions in movement |
| 09/06/1983 | CA1153275A1 Hydrophobic silica or silicate, compositions for containing the same, and methods for making and using the same |
| 08/18/1983 | WO1983002731A1 Screen machine |
| 08/02/1983 | US4396509 Device for extraction of liquid from suspensions in movement |
| 08/02/1983 | US4396502 Screening apparatus for a papermaking machine |
| 08/02/1983 | CA1151115A1 Combined hydrocyclone and screening separation process |
| 07/21/1983 | WO1983002470A1 Method and apparatus in screening fibre suspensions |
| 07/12/1983 | US4392950 For fiber pulp slurry |
| 07/07/1983 | WO1983002293A1 Method and plant for deaerating fibre suspensions |
| 07/07/1983 | WO1983002292A1 Screen plate, screw press or the like for treatment of a suspension |
| 07/05/1983 | CA1149334A1 Hydrocyclone banks with elevated mains supported deaerated vortex finder manifold |
| 06/14/1983 | CA1148119A1 Strainer means for pulp purification |
| 06/14/1983 | CA1148095A1 Screening device for extraction of liquid from suspensions in movement |
| 06/09/1983 | WO1983001969A1 Method of preventing clogging a screening means |
| 06/07/1983 | US4386519 Specific surface fractionator |
| 06/01/1983 | EP0080036A2 Noncircular rejects outlet for cyclone separator |
| 05/25/1983 | EP0079811A1 Screening devices for paper stock, and their screens |
| 05/17/1983 | US4383918 For papermaking |
| 05/10/1983 | CA1146089A1 Method and apparatus for pressure screening fibrous suspensions |
| 04/05/1983 | US4379058 Method and apparatus for filtering contaminating particles from a liquid/particle mixture |
| 04/05/1983 | US4378978 Degassing of liquid mixtures |
| 04/05/1983 | CA1144112A1 Composite butt welded and reinforced cylindrical screens |
| 04/05/1983 | CA1143981A1 Filter or wire machine for washing stock suspensions |
| 03/29/1983 | US4378289 Method and apparatus for centrifugal separation |
| 03/09/1983 | EP0073609A2 Rotary screening machine |
| 02/22/1983 | US4374729 Strainer drum for pulp and the like |
| 02/22/1983 | US4374728 Apparatus for screening fibrous stock |
| 02/01/1983 | CA1140499A1 Disk screen, modular disk assembly and method |
| 01/18/1983 | US4369093 Pulping machine |
| 01/18/1983 | US4368628 Apparatus for treatment of suspensions in movement |
| 12/29/1982 | EP0067912A1 Paper making stock screen and a system for treating paper making stock |
| 12/28/1982 | CA1138381A1 Pressurized screen |
| 12/28/1982 | CA1138380A1 Rotary pulp screening device of the vertical pressure type |
| 12/28/1982 | CA1138378A1 Axial elutriator for the reject outlet of a hydrocyclone |
| 12/21/1982 | CA1137925A1 Header arrangement for hydrocyclones having concentric accept outlet arrangements |
| 12/15/1982 | EP0067148A2 Pulp degassing |
| 12/07/1982 | US4362536 High speed, rotation, squeezing |
| 11/30/1982 | CA1136585A1 High turbulence slotted circular screen with column-spaced rotating cleaners |
| 11/23/1982 | CA1136092A1 Pulp screen with pulse generators featuring fast long screen velocities |
| 11/16/1982 | CA1135635A1 Screening device |
| 11/09/1982 | US4358371 Backwashable filter |
| 11/09/1982 | US4358369 Hydrocyclone |
| 10/26/1982 | US4356085 Rotary screening machine for pulp suspensions |
| 10/26/1982 | CA1134334A1 Screening apparatus |
| 09/28/1982 | US4351728 Separator for cleaning suspensions |
| 08/25/1982 | EP0058484A2 Improvements in and relating to cyclone separators |
| 08/24/1982 | US4346007 Method at screening apparatus for cleaning the apertures in a screen plate and device for carrying out the method |
| 08/17/1982 | CA1129818A1 Screen device for paper material |
| 08/17/1982 | CA1129817A1 Hydroclone |
| 07/22/1982 | WO1982002414A1 Hydrophobic silica or silicate compositions for containing the same and methods for making and using the same |
| 07/20/1982 | CA1128012A1 Fibrous stock screen |
| 06/22/1982 | CA1126216A1 Hydrocyclone with diminished leak jacket and fail-sure wear means |
| 06/15/1982 | US4334986 Separator for a mixture of a suspension and coarse heavy particles |