| Patents for D21D 1 - Methods of beating or refining; Beaters of the hollander type (3,356) |
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| 10/05/1994 | EP0618327A1 Twin conical refiner with dual ribbon feeders |
| 09/28/1994 | EP0431040B1 A method of treating and a disperger for disintegrating wood pulp, especially containing waste paper |
| 09/21/1994 | EP0615563A1 Apparatus for dividing a flow of fibrous material into at least two equally metered flows. |
| 09/21/1994 | CN2177744Y Mechanical pulp-milling piece for bagasse |
| 09/21/1994 | CN2177743Y Vertical machine for removing sand, breakdown and milling of paper pulp |
| 09/01/1994 | WO1994019534A1 Wood pulp processing apparatus and method |
| 08/30/1994 | CA1331709C Method in the treatment of wood-fibre pulp, and a disperser for use in conjunction therewith |
| 08/24/1994 | EP0611599A1 Refining segment |
| 08/24/1994 | EP0478762B1 Method and device for separating a fibre suspension |
| 08/24/1994 | CN1091173A Method of treating papermaking fibers for making tissue |
| 08/16/1994 | US5338451 Apparatus for treating pulp |
| 08/10/1994 | EP0609542A1 Method of producing fiber pulp |
| 08/09/1994 | US5335865 Two-stage variable intensity refiner |
| 08/03/1994 | CN2173268Y Stator and rotator for paper making beater |
| 07/13/1994 | CN2171627Y Double-function efficiente rubbing pulp sand eliminating machine |
| 07/05/1994 | US5326499 Antifoams for the paper industry, based on oil-in-water emulsions |
| 07/05/1994 | US5326038 Beating apparatus for fiber suspensions |
| 07/05/1994 | CA1330543C Multiscreen pressure diffuser |
| 06/28/1994 | US5323972 Bearing system in a refiner |
| 06/01/1994 | CN2167119Y Pulp mill with sand-removing function |
| 05/25/1994 | EP0597860A1 Beating apparatus for fibre suspensions. |
| 05/24/1994 | US5314583 Process for the comminution of materials and plant for carrying out the process |
| 05/11/1994 | WO1994010373A1 Method and pulp washing machine for washing of pulp or similar material |
| 05/03/1994 | CA1329033C Refiner element pattern achieving successive compression before impact |
| 05/03/1994 | CA1329032C Method and apparatus for feeding a conical refiner |
| 04/29/1994 | CA2081387A1 Variable stage pressure diffuser |
| 04/14/1994 | WO1994008088A1 New method of liquor removal from particulate solids |
| 04/14/1994 | CA2146241A1 New method of liquor removal from particulate solids |
| 04/05/1994 | US5299747 Paper material screening/refining apparatus |
| 03/22/1994 | US5296098 Method and device for separating a fibre suspension |
| 03/02/1994 | CN2157943Y Disc grinding plate |
| 02/23/1994 | EP0583310A1 Use of cellulase for pulp treatment. |
| 02/16/1994 | CN2156207Y Multi-function carding, pulp refining, grinding equipment |
| 01/19/1994 | CN2153573Y Double function high efficient pulp sand remover |
| 01/12/1994 | EP0577621A1 Refiner. |
| 01/04/1994 | US5275024 Paper pulp washing |
| 12/29/1993 | EP0575803A1 Two-stage variable intensity refiner |
| 12/27/1993 | CA2094674A1 Two-stage variable intensity refiner |
| 12/21/1993 | CA1325352C Method and apparatus for treating pulp |
| 12/14/1993 | US5269470 Method of producing finely divided fibrous cellulose particles |
| 11/30/1993 | US5266168 Gravity type pulp washer or thickener with rotating disrupters |
| 11/25/1993 | WO1993023166A1 Apparatus for refining fiber material |
| 11/25/1993 | CA2133201A1 Apparatus for refining fiber material |
| 11/23/1993 | US5263653 Twin-flow beater mill for preparing fibrous materials |
| 11/11/1993 | WO1993022028A1 Paper pulp washing apparatus and process |
| 11/10/1993 | CN2145805Y Normal Atmospheric temp and high density pulp mill |
| 11/10/1993 | CN1078277A Method for making printing paper by grinding pulp method with preheated wood strips |
| 11/10/1993 | CN1078276A Method for prodn. of printing paper pulp made from all cotton stalk by hot mechanical grinding |
| 11/09/1993 | CA2068243A1 Device for holding arcuate plate segments end-to-end in a circular configuration |
| 10/28/1993 | WO1993020941A1 Refining element |
| 10/26/1993 | US5255540 Pressurized dynamic washer |
| 10/20/1993 | EP0565779A1 Grinding plate with angled outer bars |
| 10/19/1993 | US5253815 Fiberizing apparatus |
| 10/14/1993 | WO1993019846A1 Device at a disk refiner |
| 10/05/1993 | US5249734 Rotor disc for a refiner and method of formation thereof |
| 10/01/1993 | CA2090665A1 Delumper |
| 09/29/1993 | CN1076743A Method for making pulp of newsprint and book paper by shattering cotton-rod, removing black bark and pith |
| 09/29/1993 | CN1022258C Production method of bleached wood pulp base paper |
| 09/28/1993 | US5248099 Pressurized disk refiner |
| 09/21/1993 | CA1322304C Method and device for indicating the contact position in a refiner |
| 09/15/1993 | EP0560753A1 Apparatus for treating pulp |
| 09/15/1993 | EP0413736B1 Method of making mechanical and chemi-mechanical papermaking pulp |
| 09/09/1993 | DE4210207C1 Grinder disc with knives for fibre-shredder - has rings of teeth with radial grinding surfaces working between similar rings of teeth on stator |
| 08/31/1993 | CA1321760C Method for thickening of slurry and for its treatment with liquid as well as a drum filter |
| 08/24/1993 | US5238501 Feeding slurry at inclined angle onto endless filter belt, distributing over width under localized pressure, washing under differential pressure, withdrawing washed slurry |
| 08/18/1993 | EP0555378A1 Fiberizing apparatus |
| 08/17/1993 | CA1321284C Method of paper making |
| 08/10/1993 | CA1321094C Method and apparatus for treating fiber suspensions |
| 08/05/1993 | WO1993014871A1 Bearing system in a refiner |
| 08/05/1993 | CA2122142A1 Bearing system in a refiner |
| 08/04/1993 | EP0386031B1 Method and device for indicating the contact position in a refiner |
| 08/03/1993 | CA1320864C2 Apparatus for crushing or grinding of fibrous material, in particular drum refiner |
| 07/20/1993 | US5228629 Grinding element for drum refiner |
| 07/14/1993 | EP0550679A1 Bearing system in a refiner. |
| 07/13/1993 | CA1320067C Method of making mechanical and chemi-mechanical papermaking pulp |
| 07/08/1993 | WO1993013262A1 Gravity type pulp washer or thickener |
| 07/08/1993 | CA2126239A1 Gravity type pulp washer or thickener |
| 07/06/1993 | US5225041 Refining process for paper pulp using a silica sol |
| 06/29/1993 | CA1319621C Method and equipment for filtration of suspension |
| 06/22/1993 | US5221434 Method for treating fiber suspensions |
| 06/10/1993 | WO1993011295A1 Apparatus for dividing a flow of fibrous material into at least two equally metered flows |
| 06/09/1993 | EP0545888A1 Variable stage pressure diffuser |
| 06/09/1993 | CN2135591Y High-effect grass pulp machine |
| 05/27/1993 | CA2066462A1 Paper material screening/refining apparatus |
| 05/25/1993 | CA1318166C Apparatus for crushing or grinding of fibrous material, in particular drum refiner |
| 05/13/1993 | WO1993009285A1 Apparatus and method for washing cellulosic pulp |
| 05/11/1993 | CA1317499C Apparatus for crushing or grinding of fibrous material, in particular drum refiner |
| 04/20/1993 | US5203968 Apparatus for treating fiber suspensions having rotatable liquid permeable treatment ducts |
| 04/20/1993 | US5203514 Refiner with means to protect the refining discs from premature wear |
| 04/20/1993 | US5203045 Method of treating paper pulp |
| 04/14/1993 | EP0536580A1 Application of enzymes and flocculants for enhancing the freeness of paper making pulp |
| 04/13/1993 | US5201917 Grinding or refining machines for grinding the ceramic powders, or defibration and refining of paper pulp |
| 04/06/1993 | US5200038 Pulp refiner with fluidizing inlet |
| 03/17/1993 | EP0531713A1 Antifoams for paper industry based on emulsions of oil in water |
| 03/04/1993 | WO1993004233A1 Liquid removal apparatus and method for wood pulp |
| 02/23/1993 | US5187956 Preventing clogging in pressure diffusers |
| 02/17/1993 | EP0527323A1 Screw feeder |
| 02/16/1993 | CA1313599C Pulp treatment methods |
| 02/02/1993 | US5183536 Cellulose |
| 01/26/1993 | US5181664 Grinding plate with angled outer bars |