| Patents for B07B 1 - Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like (18,540) |
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| 03/21/1990 | CN2054721U Cylinder brush apparatus of cylinder screening machine |
| 03/21/1990 | CN2054720U Rotary screen |
| 03/21/1990 | CN1040521A Method for removing dregs on slurry screen by airstream and centrifugal slurry screen |
| 03/20/1990 | US4909929 Interlocking clamping system |
| 03/15/1990 | DE3831270A1 Method and device for drying and classifying bulk material |
| 03/14/1990 | EP0358632A2 Screening device |
| 03/14/1990 | EP0357762A1 Process and device for guiding and separating grains. |
| 03/13/1990 | US4907702 Automatic chip classifier and system |
| 03/08/1990 | WO1990001983A1 Sieveplate |
| 03/08/1990 | DE3828976A1 Apparatus for placing granular material in a spiral conveyor or the like |
| 03/07/1990 | CN1040159A Hydraulic vibration device capable of eliminating automatically piston deviation |
| 03/06/1990 | US4906356 Material classifying apparatus |
| 03/06/1990 | US4906352 Improved tensioning assembly for vibratory screens |
| 02/28/1990 | EP0356209A2 Tension screens and the method, apparatus and materials for the manufacture thereof |
| 02/28/1990 | CN1039980A Vertical pressure-tight mechanism |
| 02/28/1990 | CN1039979A Flat sieve top sieve check |
| 02/27/1990 | US4904377 Sifting apparatus |
| 02/22/1990 | DE3828315A1 Conveyor for selecting and crushing hard coal |
| 02/21/1990 | CN2053115U Sound-wave screening apparatus |
| 02/20/1990 | US4902409 Nozzle for screen apparatus |
| 02/20/1990 | US4901864 Grooved spacer for disc screen wood chip sorter |
| 02/20/1990 | US4901863 Method and apparatus for sorting wood chips |
| 02/15/1990 | DE3821689C1 Screening machine |
| 02/14/1990 | EP0354846A1 Screen for the purification and classification of a pulp suspension |
| 02/13/1990 | US4900430 Screen cleaning in CIL and CIP systems |
| 02/13/1990 | CA1265753A1 Sieves for scrubbers and in their method of manufacture |
| 02/07/1990 | EP0353284A1 Nozzle for screen apparatus |
| 02/07/1990 | CN2052306U Plane revdution oscillating screen |
| 02/07/1990 | CN2052305U Rotating oscillating screen |
| 02/06/1990 | US4898665 Screens for paper pulp purifiers |
| 02/06/1990 | CA1265474A1 Screen cleaner for particle size analyzer |
| 01/31/1990 | EP0353126A1 Machine for screening dusty, floury or granular products |
| 01/30/1990 | US4897183 Litter screening and separating apparatus |
| 01/30/1990 | US4896835 Screening machine |
| 01/30/1990 | CA1264963A1 Variable speed, variable motion, electrically operated vibrator for screening machinery |
| 01/25/1990 | WO1990000443A1 Vibrating screen breaker |
| 01/25/1990 | DE3824317A1 Rotatably mounted, hand-operated or motor-operated sieve drum for soils, composts, sand, building materials and the like |
| 01/24/1990 | CN2051530U Metallic fibre dispersing sieve |
| 01/23/1990 | CA1264638A1 Combine sieve plate |
| 01/17/1990 | EP0350830A2 Screening machine |
| 01/17/1990 | CN1006481B Cylindrical screen |
| 01/11/1990 | DE3825837A1 Screen-bottom tensioning device |
| 01/11/1990 | DE3821646C1 Drum screen |
| 01/10/1990 | CN2050784U Self-removing type siffer with net |
| 01/10/1990 | CN1038598A Procedure and apparatus for sorting of wood chips |
| 01/09/1990 | US4892767 Screening arrangement |
| 01/09/1990 | CA1264304A1 Method for screening or fractionation |
| 01/08/1990 | EP0274479A4 Process for the separation and isolation of shaped catalyst-type particles by length. |
| 12/28/1989 | DE3821647A1 Wet-screening machine |
| 12/26/1989 | US4889619 Package with a crumb trap |
| 12/21/1989 | DE3919610A1 Method and device for sorting wood shavings |
| 12/14/1989 | DE3917604A1 Method for cleaning root crops |
| 12/13/1989 | CN2049261U Vibration screen with eccentric motor |
| 12/06/1989 | EP0344851A1 Apparatus for sizing bulb and root crop |
| 12/06/1989 | CN2048789U Electric sealed powder screen |
| 12/05/1989 | US4885040 Procedure for manufacturing a screen-mat as an in-lay for systematic screen fields |
| 12/05/1989 | US4884700 Sorting machine |
| 11/30/1989 | DE3816721A1 Screening drum for separating earth from municipal and household refuse interspersed with coarse and bulky material |
| 11/30/1989 | DE3816720A1 Charging apparatus, in particular for wet, sticky materials, in particular for use in earth screen drums |
| 11/29/1989 | EP0343423A2 Cellular-wheel lock |
| 11/29/1989 | CN2048400U Vibrating drum sieve |
| 11/23/1989 | DE3816078A1 Process for producing heat-resistant and chemical-resistant ultrafinely pored microsieves (hole size d > 10 nano-m) from the polyimide film "Kapton" (tradename of Du Pont) |
| 11/22/1989 | CN2047994U Screen mesh with y shape gap structure |
| 11/22/1989 | CN2047993U Asbestos separator making use of inertia |
| 11/21/1989 | US4882054 Vibratory screening machine with tiltable screen frame and adjustable discharge weir |
| 11/21/1989 | US4882044 Screening arrangement |
| 11/15/1989 | EP0174967B1 Sorting plant particularly for recovering valuable materials from refuse |
| 11/14/1989 | US4880540 Pulp screening apparatus |
| 11/14/1989 | US4880532 Sorting apparatus for fiber suspensions |
| 11/14/1989 | US4880530 Self-cleaning screening device |
| 11/09/1989 | DE3800812A1 Screen lining of a screening machine |
| 11/07/1989 | US4879024 Elastomeric element for forming surfaces engageable with loose abrasive materials, and a sizing screen made from such elements |
| 11/07/1989 | US4879023 Conveyor assembly |
| 11/07/1989 | CA1262639A1 Padding machines |
| 11/02/1989 | WO1989010212A1 Combined rotary sieving and distributing device |
| 11/02/1989 | WO1989010211A1 A sorting device |
| 11/02/1989 | EP0340148A2 Apparatus for separating material by length |
| 11/02/1989 | EP0339490A2 Device for sorting rubbish |
| 11/01/1989 | CN1036715A Combined high-frequency vibrational screen for dry/wet materials |
| 10/31/1989 | US4877039 Grain cleaner |
| 10/26/1989 | DE3812056A1 Apparatus for grinding and separating granular material |
| 10/25/1989 | EP0338137A1 Combined rotary sieving and distributing device |
| 10/24/1989 | US4876008 Sieve plate |
| 10/24/1989 | US4875999 Apparatus and method of classifying particles |
| 10/19/1989 | WO1989009659A1 Screening apparatus for bulk material |
| 10/18/1989 | EP0337822A1 Screening apparatus for bulk material |
| 10/18/1989 | CN2046043U Iron-removing oscillating screen |
| 10/11/1989 | EP0336352A2 Micro construction element |
| 10/11/1989 | CN1005389B Method and apparatus for sieving heavy material from grain or other bulk material |
| 10/10/1989 | US4872977 Solid waste retriever |
| 10/05/1989 | DE3809475A1 Apparatus for charging a screening drum |
| 10/04/1989 | CN2045330U Rotary sand screen |
| 10/03/1989 | US4871393 Apparatus and method for feeding sintering raw mix |
| 10/03/1989 | US4871288 Screen lining |
| 10/03/1989 | US4871073 Disc screen separator device |
| 09/27/1989 | CN2044901U Fluidized screening device with spiral drum screen |
| 09/21/1989 | WO1989008829A1 Automatic particle-size analyzer with divided drum |
| 09/21/1989 | WO1989008509A1 Screen with overlapping screen cloth elements |
| 09/21/1989 | WO1989008501A1 Process and device for guiding and separating grains |
| 09/21/1989 | DE3807843A1 Apparatus for grinding and separating granular material |