| Patents for B01D 33 - Filters with filtering elements which move during the filtering operation (10,149) |
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| 10/20/1981 | CA1110979A1 Device for the separation of liquid from a slurryladen fluid |
| 10/20/1981 | CA1110978A1 Belt filter |
| 10/13/1981 | US4294700 Submerged large diameter seal |
| 10/13/1981 | CA1110552A1 Rotary drum filter and method of operation for medium cleaning |
| 10/06/1981 | US4293411 Steam seal for disc filter |
| 10/01/1981 | WO1981002684A1 Apparatus for trating liquid effluent containing solid material |
| 09/29/1981 | US4292177 Pressurizable rotary filter |
| 09/29/1981 | US4292123 Procedure and apparatus for cellulose washing |
| 09/17/1981 | WO1981002528A1 Dewatering system |
| 09/15/1981 | US4289624 Apparatus for extracting solids from slurry |
| 09/15/1981 | US4289519 Feeding into interior of rotating foraminous substrate |
| 09/15/1981 | CA1109001A1 Rotary drum screen |
| 09/08/1981 | CA1108467A1 Chamber type filter press for de-watering sludges and similar substances |
| 09/03/1981 | WO1981002393A1 Liquid filtering apparatus |
| 09/02/1981 | EP0034780A2 Rotating sorter |
| 09/01/1981 | US4287058 Conveyer screw, filter |
| 08/25/1981 | US4285817 Disc sector |
| 08/25/1981 | US4285816 Dewatering system |
| 08/25/1981 | US4285815 Vacuum filter belt apparatus |
| 08/18/1981 | US4283938 Method and apparatus for dynamic concentration of a suspension |
| 08/12/1981 | EP0033482A1 Device for separating solid impurities from liquids |
| 08/12/1981 | EP0033371A1 Filter arrangement |
| 08/11/1981 | US4283466 Taking place in a reaction chamber traversed by a suspension of particles separated into a concentrated fraction and a fluid fraction |
| 08/11/1981 | US4283285 For making ore pellets from sludge |
| 08/11/1981 | CA1106558A1 Doctor blade cleaning assembly |
| 08/04/1981 | US4282101 Filtering apparatus |
| 08/04/1981 | CA1106510A1 Sludge thickening |
| 07/28/1981 | US4280913 Water purification process |
| 07/28/1981 | CA1105827A1 Counter current crystallizer |
| 07/21/1981 | US4279760 Process and apparatus for continuous cake filteration under pressure |
| 07/21/1981 | US4279751 Hydraulic system |
| 07/21/1981 | US4279750 Continuous treatment apparatus for treating waste material |
| 07/21/1981 | US4279749 Collar for cake discharge chute of rotatable disc filter |
| 07/21/1981 | US4279747 For sugar juice |
| 07/21/1981 | US4279227 Heat storage in by-products of an intermittent process |
| 07/14/1981 | US4278543 Rotary sieve for separation of solids from liquids |
| 07/07/1981 | US4276822 Apparatus for the batch filtering of suspensions |
| 07/01/1981 | EP0030957A1 Centrifugal oil filter. |
| 06/30/1981 | US4276169 Drainage deck assembly for rotary vacuum drum filter |
| 06/30/1981 | US4276168 Device for dewatering sludge |
| 06/16/1981 | US4273655 Doctor blade cleaning method and apparatus |
| 06/16/1981 | US4273509 Self-powered cleaning unit for a fluid pump |
| 06/10/1981 | EP0029905A1 Stock supply means for strainer presses |
| 06/09/1981 | CA1102604A1 Method and an apparatus for treating fibre suspensions |
| 06/02/1981 | CA1102254A1 Rotary disc filter scraper apparatus |
| 05/27/1981 | EP0029222A2 Integrated flotation and filtration device and method for combined flotation and filtration |
| 05/26/1981 | CA1101726A1 Device for dewatering sludge or the like |
| 05/19/1981 | CA1101340A1 Continuous screening or filtering machine |
| 05/12/1981 | US4266474 Chamber type filter press for de-watering sludges and similar substances |
| 05/05/1981 | US4265765 Vacuum filterbelt apparatus |
| 05/05/1981 | US4265764 Rotary drum vacuum filter |
| 05/05/1981 | CA1100414A1 Container washer label removal system |
| 04/28/1981 | US4264438 Screen drum and a method for its manufacture |
| 04/21/1981 | CA1099588A1 Equipment for dehydrating runs of fibrous material |
| 04/14/1981 | US4261831 Cleaner for drum type vacuum filter system |
| 04/14/1981 | US4261822 Self cleaning |
| 04/08/1981 | EP0026661A2 Liquid treatment apparatus comprising rotatable drum with flexible edge seal |
| 04/07/1981 | US4260492 Rotary diaphragm press |
| 04/07/1981 | CA1098840A1 Concave resin-shielded filter element for a rotatable disc filter |
| 04/01/1981 | EP0026069A1 Apparatus and method for separating entrained particulate matter from a conveying fluid |
| 03/24/1981 | CA1098046A1 Apparatus and method for filtering a fibrous material with a disc filter |
| 03/17/1981 | US4256582 Continuous separation system |
| 03/10/1981 | US4255269 Method and apparatus for adapting the composition of a drilling fluid for use in making a hole in the earth by rotary drilling |
| 03/10/1981 | US4255264 Rotary drum or disc filter |
| 03/10/1981 | US4255261 Separation drum for belt filter with suction recovery of solids |
| 03/03/1981 | US4253953 Centrifugal oil filter |
| 02/25/1981 | EP0024097A1 Apparatus and process for treating a fluid material while it is subjected to a centrifugal force |
| 02/24/1981 | CA1096315A1 Filter apparatus |
| 02/19/1981 | WO1981000359A1 Method and filter for separating filterable particles from a liquid suspension |
| 02/18/1981 | EP0024041A1 Filter device with solids conveyor |
| 02/17/1981 | US4251376 Filter |
| 02/17/1981 | CA1095840A1 Belt dewrinkling and alignment method and apparatus |
| 02/11/1981 | EP0023899A1 Device for dewatering aqueous suspensions and slurries |
| 02/10/1981 | US4250036 Conveying means for use in filtering devices |
| 02/04/1981 | EP0023444A1 Portable water purifier for domestic use |
| 02/03/1981 | US4248716 Fiberglass-reinforced plastic lining, stainless steel insert |
| 02/03/1981 | US4248709 Method of filtering sewer scum and apparatus therefor |
| 01/27/1981 | US4247395 Sewage treatment process and apparatus |
| 01/27/1981 | US4247341 Conveyors |
| 01/20/1981 | US4246108 Microstrainer apparatus and method |
| 01/20/1981 | US4246106 Method for refining melts from solid impurities |
| 01/20/1981 | US4246102 Water treatment by precipitation filtration and flocculation |
| 01/13/1981 | US4245011 Chemical and electrochemical devices |
| 01/13/1981 | US4244905 Method and apparatus for the manufacture of mold bodies, particularly pellets from secondary slurries of the metallurgical industry |
| 01/13/1981 | US4244804 Slime and sludge dewatering |
| 01/13/1981 | CA1093475A1 Apparatus for the treatment of a filter cake with a liquid on a movable filter |
| 01/13/1981 | CA1093474A1 Method and apparatus for removing filterable substances from a liquid |
| 01/08/1981 | WO1981000005A1 Centrifugal oil filter |
| 01/07/1981 | EP0021576A2 Improvements in and relating to travelling water screens |
| 12/30/1980 | US4242205 Traveling belt filter |
| 12/30/1980 | US4242204 Apparatus for separation of material suspended in liquids |
| 12/16/1980 | US4239626 Filter for removing fines |
| 12/16/1980 | CA1091494A1 Stockwasher |
| 12/10/1980 | EP0020101A1 Vacuum belt filter including vacuum sealing means |
| 12/10/1980 | EP0020100A1 Endless conveyor belt filter |
| 12/02/1980 | US4237014 Flowable material passage with interposable slide member |
| 12/02/1980 | US4236999 Separation of solids from liquids by screening |
| 12/02/1980 | CA1090711A1 Disk filter |
| 11/25/1980 | CA1090265A1 Apparatus for continuous liquid-solid separation |
| 11/25/1980 | CA1090264A1 Rotating interleaved disc filter apparatus |