| Patents for B07B 4 - Separating solids from solids by subjecting their mixture to gas currents (2,793) |
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| 08/21/1990 | US4950388 Separation of mixtures in a wind tunnel |
| 08/16/1990 | WO1990009246A1 Air concentrator |
| 08/08/1990 | EP0233194B1 Apparatus for the classification or separation of solid materials |
| 08/07/1990 | US4946653 Process for the simultaneous classification and regulated, continuous discharge of particulate material from fluidized bed reactors |
| 08/07/1990 | US4946044 Aeration separator |
| 07/11/1990 | CN2059107U Sorting machine for particle materials |
| 06/27/1990 | EP0316326A4 Separation of mixtures in a wind tunnel. |
| 06/19/1990 | US4935123 Apparatus for the classification or separation of solid materials |
| 06/05/1990 | US4931174 Zigzag classifier |
| 06/05/1990 | US4931173 Apparatus and method for removing debris from granular material |
| 05/22/1990 | US4927528 Sieve device for sieving out compost from rotten organic material |
| 04/18/1990 | CN2056097U Multi-purpose combined electric winnowing machine |
| 04/10/1990 | US4915824 Pneumatic classifier for tobacco and method |
| 04/04/1990 | EP0361815A1 Method and apparatus for separation of objectionable particles from tobacco material |
| 04/03/1990 | US4913807 Particle separator |
| 04/03/1990 | US4913804 Device and process for separating granular material |
| 03/28/1990 | CN1007323B Screening device for granular materials such as grain and the like |
| 03/22/1990 | DE3908353C1 Arrangement for cleaning granular bulk materials |
| 03/15/1990 | DE3831270A1 Method and device for drying and classifying bulk material |
| 03/13/1990 | US4908123 Air separator comprising inlet duct, outlet duct for conveying airbourne stream of shredded paper, discharge duct |
| 02/22/1990 | WO1990001377A1 Rotary air cleaner and separator |
| 02/21/1990 | CN2053116U Screening apparatus for lower wind of blast furnace groove |
| 02/08/1990 | DE3826181A1 Schwerkraftsichter Gravity separator |
| 02/07/1990 | EP0353261A1 Conveying apparatus and separation apparatus |
| 01/25/1990 | WO1990000445A1 Pneumatic separation of particulate material |
| 01/23/1990 | CA1264638A1 Combine sieve plate |
| 01/03/1990 | EP0349490A1 Method and device for preparing granulates |
| 12/13/1989 | CN1037849A Gas current classifying separator |
| 11/21/1989 | US4882042 Floss separating apparatus and method |
| 11/02/1989 | EP0339490A2 Device for sorting rubbish |
| 10/26/1989 | DE3812229A1 Circulating-air separator |
| 10/18/1989 | CN1005460B Fluidised-bed apparturs for continuous separating mixture of two kinds of solid |
| 10/04/1989 | CN1035963A Simple-and double-platen stone separator |
| 09/27/1989 | EP0334180A2 Flour purifier |
| 09/26/1989 | CA1259953A1 Screening device and process |
| 09/20/1989 | EP0332929A1 Process and apparatus for fluidized-bed granulation |
| 09/19/1989 | CA1259584A1 Vibratory separation apparatus |
| 09/13/1989 | EP0332031A2 Zigzag sifter |
| 09/12/1989 | US4865721 Vertical-drop grain aspirator |
| 09/06/1989 | CN2043894U Power dust remover |
| 08/30/1989 | EP0329865A1 Improvements in particle separators |
| 08/16/1989 | CN2042756U Wind-force adjustable windmill for agricuture |
| 08/15/1989 | US4857177 Dry separation of solids |
| 08/15/1989 | US4857173 Particle classifier and method |
| 07/13/1989 | WO1989006166A1 Method and apparatus for grading and/or sorting seed or grain |
| 07/04/1989 | US4844235 Vibratory separation apparatus |
| 06/20/1989 | US4840727 Double bank grain cleaner and aspirator therefor |
| 06/15/1989 | WO1989004802A3 Conveying apparatus and separation apparatus |
| 06/01/1989 | WO1989004802A2 Conveying apparatus and separation apparatus |
| 06/01/1989 | WO1989004722A1 Process and device for separating heavy admixtures from grain |
| 06/01/1989 | WO1989004721A1 Process and device for separating mixed grain |
| 05/31/1989 | EP0318054A1 Method of and device for separating heavy impurities from grain |
| 05/31/1989 | EP0318053A1 Method of and device for separating a grain mixture |
| 05/24/1989 | EP0316622A2 Method and apparatus for elutriation of shaped particles of polymeric resin |
| 05/24/1989 | EP0316326A1 Separation of mixtures in a wind tunnel |
| 05/18/1989 | WO1989004220A1 Method and apparatus for classifying particles |
| 05/17/1989 | EP0316305A2 Particle classifier |
| 05/17/1989 | CN2037646U Light-impurity separator |
| 05/11/1989 | DE3736823A1 Process and device for separating materials |
| 05/11/1989 | DE3736820A1 Process and device for separating materials |
| 05/03/1989 | CN2036872U Electric dual-purpose aerovane for air and screen classification |
| 05/03/1989 | CN2036871U Screening machine for grain |
| 04/05/1989 | CN2035280U Grain selecting fan |
| 04/04/1989 | US4818376 Leakage prevention apparatus for a classifier |
| 03/15/1989 | CN1031664A Gravity classifier |
| 03/07/1989 | CA1250815A1 Particle classifier |
| 02/21/1989 | US4806235 Apparatus for cleaning grain products |
| 02/15/1989 | EP0303034A2 Method and device for sorting refuse |
| 02/01/1989 | CN2031720U Airflow type separating machine |
| 01/31/1989 | US4801374 Apparatus for the treatment of seed materials |
| 01/24/1989 | US4799595 Apparatus for the classifying of powdered bulk materials |
| 01/24/1989 | CA1249245A1 Particle classifier |
| 01/17/1989 | CA1248914A1 Vibratory separation apparatus |
| 12/07/1988 | EP0293426A1 Installation and process for the dry-grinding of granular foodstuffs and feedstuffs. |
| 12/06/1988 | US4789068 Wood chip classifying system |
| 12/01/1988 | DE3741650C1 Apparatus for classifying dust-like bulk materials |
| 11/22/1988 | US4786406 Blades of sintered ceramic; rubbery, elastic inserts for support |
| 11/15/1988 | US4784755 Dust control |
| 11/02/1988 | CN88200910U Coupled coaxial separating unit for horizontal mill |
| 10/26/1988 | CN87216892U Air suspension separating machine |
| 10/18/1988 | US4778061 Having rotating disc screens; waste treatment and removal |
| 09/28/1988 | CN87215176U Wind grain-cleaning machine |
| 09/28/1988 | CN87214296U Absorptive specific gravity separating machine of rice plumule |
| 09/20/1988 | US4772381 Apparatus for separating electrically conductive non-ferrous metals |
| 09/20/1988 | US4772380 Chute feeder for chip wringer |
| 09/14/1988 | EP0282048A2 Device for treating recycling materials, preferably debris |
| 09/08/1988 | DE3706134A1 Air-sifting device |
| 08/17/1988 | EP0278624A1 Dry separation of solids |
| 08/17/1988 | EP0182831B1 Installation and process for sorting heavy materials, in particular stones or the like from cereals or other bulk products |
| 08/03/1988 | EP0276750A2 Method and device for preparing bulk material, in particular abrasive material |
| 07/27/1988 | CN86104771B Separator for sorting particulate material |
| 07/26/1988 | US4759840 Particle classifier |
| 07/12/1988 | US4756428 Method and turbo-separator for dispersion air separation, particularly of cement |
| 07/05/1988 | US4755284 Elutriator |
| 06/29/1988 | EP0272624A2 Screening device for separating compost from rotten organic material |
| 06/22/1988 | EP0271608A1 Device for separating lighter objects from waste material |
| 06/22/1988 | CN87101243A Apparatus and method for cleaning particle food and fodder in dry way |
| 06/16/1988 | WO1988004204A1 Installation and process for the dry-grinding of granular foodstuffs and feedstuffs |
| 06/14/1988 | US4750997 Grain cleaner and spreader |
| 06/01/1988 | EP0181353B1 Device and process for separating granular material |