| Patents for B07B 13 - Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices (4,324) |
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| 02/27/1991 | EP0252938B1 An arrangement for the separation of waste materials |
| 01/29/1991 | WO1991001817A1 Process and device for separating a mixture of substances and use of the device |
| 01/29/1991 | CA2027594A1 Method and apparatus for the separation of a material mixture and use of the apparatus |
| 01/24/1991 | WO1991000837A1 Conveyor belt dumping mechanism using horizontal idlers of varying lengths |
| 01/23/1991 | CN1048667A Gravitational friction-separating plate |
| 01/22/1991 | US4986424 Process and apparatus for separating materials of different shapes or sizes |
| 01/16/1991 | EP0407382A1 Automatic particle-size analyzer with divided drum |
| 01/08/1991 | US4983280 Screening apparatus |
| 01/03/1991 | DE3920918A1 Drum sieve for sifting soil and compost - has drum rolling on two parallel vehicle axles with pneumatic tyres |
| 01/02/1991 | EP0405943A1 A grading machine |
| 01/01/1991 | US4981220 Method of and apparatus for separating seeds from a juice/juice sac slurry |
| 01/01/1991 | US4981204 Mobile material-handling apparatus |
| 12/26/1990 | CN2068020U Multilayer single body gravity separating machine for grain and brown rice |
| 12/25/1990 | US4979624 Sizing apparatus and proportional spacing mechanism |
| 12/18/1990 | US4978443 Separator disc |
| 12/18/1990 | US4978011 Sorting machine for grained products |
| 12/18/1990 | US4978010 Fruit sizing apparatus |
| 12/04/1990 | CA1277284C Louvered chip screener and method of sizing chips according to thickness |
| 11/28/1990 | EP0399614A1 Method of grading crops according to square size and apparatus for carrying out the method |
| 11/20/1990 | CA1276509C Particle displacement |
| 11/07/1990 | EP0396529A1 Vibratory separator |
| 11/06/1990 | US4968418 Apparatus for washing out and sorting organic, loamy and other impurities from continuously supplied coarse and fine granular solids |
| 10/31/1990 | EP0394344A1 Method and apparatus for grading and/or sorting seed or grain |
| 10/16/1990 | US4963720 Apparatus for counting lump foodstuffs |
| 09/27/1990 | DE3914205C1 Prepn. of building rubble contg. inorganic components - by breaking up material, adding sand and removing organic material |
| 09/12/1990 | EP0223639B1 Method of and device for putting apart spherical materials possibly showing imperfections |
| 09/11/1990 | US4956078 Feed prestratification attachment for high efficiency vibratory screening |
| 09/05/1990 | EP0385241A1 Screening machine |
| 09/04/1990 | US4953712 Grading rolls for agricultural, horticultural and other articles |
| 08/29/1990 | EP0384830A1 Secondary separating device for crop on combine harvesters |
| 08/25/1990 | CA2010897A1 Screening machine |
| 08/21/1990 | CA1272985A1 Upwardly clearing spiral conveyor for vibrating screens operating on viscous material such as paint |
| 08/16/1990 | WO1990009246A1 Air concentrator |
| 08/14/1990 | US4948498 Separating drum |
| 08/14/1990 | US4948497 Acoustically fluidized bed of fine particles |
| 08/09/1990 | WO1990008601A1 Process and installation for recovering valuable materials, in particular from waste materials on building sites |
| 08/09/1990 | WO1990008597A1 Machine for processing goods, especially refuse, for sorting it |
| 08/09/1990 | DE3903325A1 Verfahren zum rueckgewinnen von wertstoffen, insbesondere aus baustellenabfaellen und anlage zum durchfuehren des verfahrens A method for rueckgewinnen worth of materials, particularly of baustellenabfaellen and system for performing the method |
| 07/18/1990 | EP0295239B1 Disk screen improvement for chip screening efficiency |
| 07/10/1990 | US4940535 Solids flow distribution apparatus |
| 07/10/1990 | US4940145 Apparatus for sizing produce and the like |
| 06/28/1990 | WO1990006804A1 Filtering apparatus |
| 06/26/1990 | US4936362 Firewood clean out apparatus |
| 06/12/1990 | US4933074 Article singulating system and method |
| 06/12/1990 | US4933072 Material classifier |
| 06/12/1990 | CA2005309A1 Filtering apparatus |
| 06/06/1990 | EP0174943B1 Screening apparatus |
| 06/05/1990 | US4930625 Conveyor belt dumping mechanism using horizontal idlers of varying lengths |
| 05/31/1990 | DE3934563A1 Vorrichtung zum aussondern masshaltiger bonbons Discard device for dimensionally accurate sweets |
| 05/30/1990 | EP0370237A1 Apparatus for rinsing and sorting organic, loamy and other impurities from continuously fed coarse and fine-grained solid materials |
| 05/23/1990 | EP0369912A1 Device for sorting parts, in particular parts having different shapes and dimensions |
| 05/23/1990 | CN2057376U Particle sorting machine for traditional chinese medicine |
| 05/22/1990 | US4927534 Screen system |
| 05/22/1990 | US4927030 Method and apparatus for debris screening and sorting of peanuts |
| 05/03/1990 | DE3836379A1 Method for processing wet refuse for the purpose of fermenting the organic components of the latter together with sewage sludge and apparatus for mechanically separating organic and inorganic refuse portions |
| 05/02/1990 | CN1007789B Disc screen with decreasing dap wide and screening method |
| 04/25/1990 | EP0364555A1 Method and apparatus for sorting round objects |
| 04/24/1990 | CA1268140A1 Berry screener-sorter |
| 04/19/1990 | DE3934298A1 Shrimps sorting drum - made of plastic material with raised parts made of stainless steel |
| 04/11/1990 | CN1007494B Convey assembly |
| 04/04/1990 | EP0122270B1 Separation of multi-phase systems |
| 03/15/1990 | DE3830366A1 Method for separating wire lengths from a fraction of scrap particles |
| 03/14/1990 | CN1040335A Method and apparatus for friction sorting of particulate materials |
| 03/07/1990 | CN2053948U Gravity friction separating plate |
| 02/22/1990 | WO1990001378A1 Sorting apparatus |
| 02/22/1990 | WO1990001377A1 Rotary air cleaner and separator |
| 02/22/1990 | DE3828315A1 Conveyor for selecting and crushing hard coal |
| 02/20/1990 | US4902409 Nozzle for screen apparatus |
| 02/15/1990 | DE3827337A1 Sorting device |
| 02/13/1990 | US4900498 Method for separating elongated contaminants from a stream of material |
| 02/07/1990 | EP0353284A1 Nozzle for screen apparatus |
| 01/23/1990 | US4895209 Combine apparatus |
| 01/23/1990 | EP0335922A4 Method and apparatus for friction sorting of particulate materials. |
| 01/16/1990 | US4894148 Device for separating a heterogeneous mass of solid material into fractions |
| 01/11/1990 | DE3822144A1 Device for separating crops from admixtures of soil |
| 01/09/1990 | US4892650 Fruit grading machine |
| 01/09/1990 | US4892647 System for segregating trash |
| 01/08/1990 | EP0274479A4 Process for the separation and isolation of shaped catalyst-type particles by length. |
| 12/19/1989 | US4887723 Anti-friction sorting roll and stabilizer |
| 12/06/1989 | EP0344851A1 Apparatus for sizing bulb and root crop |
| 12/05/1989 | US4884700 Sorting machine |
| 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 |
| 11/21/1989 | US4882054 Vibratory screening machine with tiltable screen frame and adjustable discharge weir |
| 11/15/1989 | EP0174967B1 Sorting plant particularly for recovering valuable materials from refuse |
| 11/07/1989 | US4879023 Conveyor assembly |
| 11/02/1989 | WO1989010212A1 Combined rotary sieving and distributing device |
| 11/02/1989 | EP0340148A2 Apparatus for separating material by length |
| 11/02/1989 | EP0340140A1 Mechanical grader with a conveyor and oscillator cable, disposed in diverging windings |
| 11/02/1989 | DE3813006A1 Ball separating device |
| 10/25/1989 | EP0338137A1 Combined rotary sieving and distributing device |
| 10/24/1989 | US4875999 Apparatus and method of classifying particles |
| 10/24/1989 | US4875889 Combine crop material flow adjustment system |
| 10/19/1989 | WO1989009659A1 Screening apparatus for bulk material |
| 10/19/1989 | DE3810544A1 Method and apparatus for separating a mixture of hard, soft or tough and woody substances |
| 10/18/1989 | EP0337822A1 Screening apparatus for bulk material |
| 10/17/1989 | US4874097 Mechanism for separating the closed pistachio nuts from the open pistachio nuts of aegina and rotten legumes |
| 10/11/1989 | EP0335922A1 Method and apparatus for friction sorting of particulate materials |
| 10/05/1989 | WO1989009098A1 Method and apparatus for sorting round objects |
| 10/05/1989 | DE3809475A1 Apparatus for charging a screening drum |