| Patents for D21D 1 - Methods of beating or refining; Beaters of the hollander type (3,356) |
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| 01/20/1993 | EP0523047A1 Apparatus and method for conjoint adjustment of both the inner and outer grinding spaces of a pulp defibrating apparatus. |
| 01/12/1993 | US5178339 Rotor disc for a refiner and method of formation thereof |
| 01/05/1993 | US5176793 Method of treating and a disperger for disintegrating wood pulp, especially containing waste paper |
| 12/30/1992 | CN1067462A Ammonium sulfite process for production of cotton pulp |
| 12/15/1992 | US5170951 Grinding apparatus |
| 12/08/1992 | US5169497 Application of enzymes and flocculants for enhancing the freeness of paper making pulp |
| 12/01/1992 | US5167373 Counter-rotating the discs at steady-state speed that are different by at least about twenty-five percent |
| 11/11/1992 | CN1019033B Paper made from mixed pulp of grass and synthetic fibre |
| 10/29/1992 | WO1992018691A1 Beating apparatus for fibre suspensions |
| 10/29/1992 | WO1992018688A1 Use of cellulase for pulp treatment |
| 10/21/1992 | EP0509981A1 Two stage pressure diffuser |
| 10/20/1992 | CA1308892C Fibrillated fibers and articles made therefrom |
| 10/07/1992 | CN2118083U Plastic disc mill |
| 10/06/1992 | WO1992017276A1 Hydrophobic cellulosic material and method of making same |
| 10/06/1992 | US5152871 Method for decreasing energy consumption during refining of fiber material while maintaining capacity |
| 10/06/1992 | CA2084766A1 Hydrophobic cellulosic material and method of making same |
| 09/29/1992 | CA1308152C Device in rolling bearings |
| 09/29/1992 | CA1307970C Process for making expanded fiber |
| 09/28/1992 | WO1992017637A1 Refiner |
| 09/28/1992 | CA2104874A1 Refiner |
| 09/23/1992 | EP0348418B1 Refiner segment |
| 09/22/1992 | US5148994 Segment for drum refiners and structure provided therewith |
| 09/16/1992 | CN2116022U Refiner feeder having concentration regulated |
| 09/09/1992 | EP0314782B1 Gap, wear and tram measurement system and method for grinding machines |
| 09/08/1992 | US5145121 Apparatus for crushing or grinding of fibrous material, in particular drum refiner |
| 08/20/1992 | WO1992013990A1 Method for controlling a defibration process |
| 08/19/1992 | CN1063732A Paper making method by all stem pulp making |
| 08/18/1992 | US5139671 Apparatus for treating pulp |
| 08/18/1992 | CA1306378C Method for decreasing energy consumption during refining of fiber material while maintaining capacity |
| 08/05/1992 | EP0497671A1 Method of refining a paper pulp |
| 08/01/1992 | CA2060395A1 Process for the preparation of paper pulp |
| 07/29/1992 | CN1063132A Production method of bleached woodpulp base paper used for insulating impregnation |
| 07/23/1992 | WO1992012290A1 Controlled intensity high speed double disc refiner |
| 07/23/1992 | WO1992011941A1 Refining element and method of manufacturing the same |
| 07/14/1992 | US5129119 Diffuser efficiency |
| 07/08/1992 | CN1062564A Technology for producing semi-chemical pulp of tobacco stalk with sulfite |
| 07/07/1992 | US5127591 Apparatus for crushing or grinding of fibrous material, in particular drum refiner |
| 07/01/1992 | EP0492600A1 Refining assisting agent and refining method using the same |
| 06/24/1992 | EP0491111A1 Atmospheric diffuser improved lower screens backflushing |
| 06/23/1992 | CA1304142C Method and apparatus for controlling the production of thermal mechanical pulp |
| 06/18/1992 | CA2045005A1 Atmospheric diffuser improved lower screens backflushing |
| 06/17/1992 | CN1017079B Full floating single millstone |
| 06/17/1992 | CN1017078B Full-floating double millstone |
| 06/16/1992 | CA1303401C Method and apparatus for producing uniform pulp yields |
| 06/16/1992 | CA1303400C Apparatus for treatment of fibre suspensions |
| 06/16/1992 | CA1303399C Method for regulating working pressure during production of mechanical pulp |
| 06/09/1992 | US5120398 For medium to high consistency; drop leg replacment |
| 06/09/1992 | US5119995 Keyway for refiner disc |
| 06/09/1992 | CA1303191C Method of refining fibrous material |
| 06/09/1992 | CA1302765C Refiner for processing a fiber stock suspension for paper fabrication |
| 06/09/1992 | CA1302764C Method of preparing a pumpable slurry |
| 05/26/1992 | US5116476 Atmospheric diffuser improved lower screens backflushing |
| 05/20/1992 | EP0486451A1 Method for controlling the refining characteristics of a refiner and a blade for the refiner |
| 05/19/1992 | US5114536 Cleaning fibers of recycled paper |
| 05/13/1992 | EP0371066B1 Method and apparatus for controlling the production of refined stock |
| 05/13/1992 | CN2104239U Reciprocating starch mill |
| 05/12/1992 | US5112443 Method and apparatus for the manufacture of fibre pulp |
| 05/01/1992 | WO1992007991A1 Fiberizing apparatus |
| 05/01/1992 | CA2095340A1 Fiberizing apparatus |
| 04/15/1992 | EP0480851A1 Plate with abrasion resistant surface and method of manufacturing same |
| 04/14/1992 | US5104011 Self-cleaning feed apparatus |
| 04/08/1992 | EP0478762A1 Method and device for separating a fibre suspension. |
| 04/04/1992 | WO1992005874A1 Bearing system in a refiner |
| 04/04/1992 | CA2090228A1 Bearing system in a refiner |
| 04/01/1992 | CN1059946A Technology for making paper pulp with pure tobacco stalk by imine method |
| 03/19/1992 | DE4029562A1 Cellulose@ washing assembly - has pressure roller immediately after couch roller to press out fluid and increase material density |
| 03/17/1992 | CA1297329C Refiner segment |
| 03/17/1992 | CA1297328C Method and device for refining a fibre material |
| 03/04/1992 | CN2097847U Double-knife starch-grinding machine |
| 02/04/1992 | US5085735 Method of refining cellulosic fibrous material with successive expansions before impacts, and expansions, to achieve increased fiber flexibility |
| 01/29/1992 | CN2094570U High-density hydraulic crasher rotator |
| 01/28/1992 | CA1294742C Polyethylene pulp |
| 01/22/1992 | CN1058061A Pressurized dynamic washer |
| 01/15/1992 | CN1015301B Method for removing black skin of cotton stem |
| 01/14/1992 | CA1294091C Method of intensifying the washing of a fibre suspension |
| 12/31/1991 | US5076892 Apparatus for pressurized refining of lignocellulose material |
| 12/30/1991 | WO1992000413A1 Pressurized dynamic washer |
| 12/24/1991 | CA1293403C2 Pressure pulp washer |
| 12/24/1991 | CA1293402C Pressure pulp washer |
| 12/12/1991 | DE4018120A1 Cellulose washing |
| 12/11/1991 | EP0460638A1 Process and apparatus for washing cellulosic pulp |
| 12/07/1991 | CA2043840A1 Method and apparatus for washing pulp |
| 11/26/1991 | US5067660 Stress regulator for pulp grinding apparatus and method |
| 11/06/1991 | CN1055975A Method for production of cotton pulp with waste cotton |
| 10/12/1991 | WO1991015629A1 Method and device for separating a fibre suspension |
| 10/01/1991 | CA1289929C Movably supported screw press |
| 09/25/1991 | CN1054808A Anti-imitation paper and manufacturing method thereof |
| 09/24/1991 | US5051195 Filters |
| 09/18/1991 | EP0290487B1 Method and device for measuring the distance between the discs of a refiner |
| 09/17/1991 | US5048768 Crushing or grinding element for drum refiners |
| 09/17/1991 | US5048765 Paper material refining apparatus |
| 09/17/1991 | CA1289192C Gap, tram and wear measurement system |
| 09/12/1991 | DE4107518A1 Heating system for grinding stones - is embedded in the concrete core to raise temp. before assembly in grinding machine |
| 09/11/1991 | EP0445509A1 Multipurpose domestic paper |
| 09/10/1991 | US5047118 Method for decreasing energy consumption during refining of fiber material at a reduced grinding frequency while maintaining capacity |
| 09/10/1991 | US5046672 Refiner plate groove configuration |
| 09/10/1991 | CA2036534A1 Preheating system for pulpstones |
| 08/27/1991 | US5042726 Refiner for refining pulp stock |
| 08/20/1991 | US5040736 Device for refining cellulose-containing material |
| 08/13/1991 | US5039022 Refiner element pattern achieving successive compression before impact |