| Patents for B01D 37 - Processes of filtration (4,716) |
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| 01/07/1992 | US5078861 Water clarifying apparatus |
| 01/07/1992 | CA1293847C Fluid purification system |
| 01/02/1992 | EP0463195A1 Movable device for the purification of all kinds of sewage |
| 01/02/1992 | EP0215087B1 Cross-flow filtration |
| 01/02/1992 | DE4019174A1 Hilfsmittel bei der filtration und/oder entwaesserung von mineral- und kohlesuspensionen Aids in filtration and / or dewatering of mineral and coal suspensions |
| 12/31/1991 | US5076936 Removal of radioactive contaminants from liquid hazardous materials; heating, chelating, filtration |
| 12/24/1991 | US5075012 Process for dewatering sludges in filter presses |
| 12/24/1991 | CA2045307A1 Apparatus for the purification of waste water |
| 12/17/1991 | US5073271 Mixing scrubber waste liquids with sludge, flocculation, filtr ation, combustion of filter cake |
| 12/16/1991 | WO1991019556A1 Aids for filtration and/or dehydration of mineral and coal suspensions |
| 12/16/1991 | CA2085357A1 Auxiliaries for the filtration and/or dewatering of mineral and coal suspensions |
| 12/15/1991 | WO1991019890A1 Filter and method for cleaning engine cooling system |
| 12/12/1991 | WO1991018660A1 Method for producing high solids slurries of clay water products |
| 12/11/1991 | EP0460811A1 Coal dewatering |
| 12/11/1991 | EP0460499A2 Method for the filtration of beverages and of chemical, pharmaceutical and similar liquids |
| 12/11/1991 | EP0460214A1 Flocculating apparatus |
| 12/05/1991 | WO1991018836A1 Improved water clarifying apparatus |
| 12/03/1991 | US5069799 Series of chemically active, physically active and inactive fi lters |
| 12/03/1991 | US5069791 Filter apparatus |
| 12/03/1991 | US5069784 Coagulation reaction tank |
| 12/03/1991 | CA1292703C Filtration with biogenetic silica |
| 11/21/1991 | EP0457611A2 Beer filtrating apparatus |
| 11/20/1991 | CN1014778B Process for fine coal cleaning |
| 11/14/1991 | WO1991016960A1 Coolant filter with inhibitor pack |
| 11/13/1991 | EP0455637A1 Process and device for operating a pressure filter for liquid-solid mixtures. |
| 11/05/1991 | US5062968 Apparatus and process for filtering fluids |
| 10/30/1991 | EP0454392A1 Method for thickening lime sludge |
| 10/22/1991 | US5059331 Solids-liquid separation |
| 10/16/1991 | EP0451945A1 An apparatus for and method of filtering a fluid |
| 10/15/1991 | US5057229 Apparatus and process for the treatment of cooling circuit water |
| 10/08/1991 | US5055314 Blend of silica gel and cellulose; filtration |
| 10/02/1991 | EP0448837A2 Method and apparatus for controlled instrumentation of particles with a filter device |
| 10/01/1991 | US5053140 Injecting gases in wastewater at bottom of tower; forming an overflowing of fat and impurities; poultry; countercurrent flow; reuse |
| 09/25/1991 | CN2085250U Cinder and water separator |
| 09/24/1991 | US5050549 Method of cleaning internal combustion engine cooling system and filter for use therein |
| 09/24/1991 | CA1289479C Vacuum pump equipped with filter for the lubricating oil |
| 09/18/1991 | EP0446471A1 Process for making a microfiltration, ultrafiltration, pervaporation or reverse osmosis membrane for suspensions, emulsions or gas separation |
| 09/17/1991 | US5048754 Conditioning system for water based can sealants |
| 09/10/1991 | US5047123 Apparatus for clarifying liquids |
| 09/05/1991 | WO1991013030A1 Processing mixed waste |
| 09/04/1991 | CN1054198A Method for dewatering particle collections |
| 09/03/1991 | CA1288376C Agitated dewaxing employing modified agitator means |
| 08/28/1991 | EP0444002A1 Method for dewatering particle collections |
| 08/28/1991 | EP0193565B1 Apparatus for clarification of water |
| 08/21/1991 | EP0442697A2 Method and apparatus for removing liquid from thickeners, filters, washers and corresponding devices |
| 08/14/1991 | EP0441209A1 Method for the utilization of carbon black coming from synthesis gas production |
| 08/14/1991 | CA2036096A1 Method and apparatus for removing liquid from thickeners, filters, washers and corresponding devices |
| 08/07/1991 | EP0440208A1 Method and apparatus for improved continuous separation of sour milk into whey and curd |
| 07/31/1991 | EP0394265A4 Method for size separation of particles |
| 07/31/1991 | EP0177521B1 Filter element for separating solid material particles from gas or liquid media |
| 07/24/1991 | EP0437763A1 Method for treating aqueous solutions |
| 07/16/1991 | US5032287 Septic tank effluent processing vaporizer |
| 07/16/1991 | US5032259 Friction-reducing lubricating-oil filter for internal combustion engine |
| 07/11/1991 | DE4000149A1 Flocculation-filtration procedure - by sepg. suspensions of fine particles by mechanically mixing with flocculant in flake or honeycomb form and using filter-press |
| 07/04/1991 | DE3943416A1 De-watering very dilute materials e.g. liquid manure etc. - by agglomeration and sedimentation while liq. flows in thin layer over suitable surface and is then filtered using porous rubber membrane |
| 07/03/1991 | CN2079994U Distomaceous earth solid board fine filting machine |
| 06/21/1991 | WO1991008820A1 Systems and methods for removing undesired matter from blood cells |
| 06/19/1991 | EP0432276A1 Method of concentrating and dehydrating slurried sludge |
| 06/18/1991 | US5024268 Corrosion inhibiting coolant inhibitor container |
| 06/11/1991 | US5022997 Method for treating aqueous solutions |
| 06/05/1991 | EP0429747A2 Process and device for the separation of solids from liquids and the separation of emulsions from sedimented solids |
| 06/05/1991 | EP0429661A1 Method of water treatment |
| 06/04/1991 | US5021166 Mixing conditioning agent with sludge, separating liquid, monitoring characteristic, maintaining optimium flow |
| 05/30/1991 | CA2031088A1 Process and apparatus for the separation of solids from fluids or sediments from emulsions |
| 05/29/1991 | EP0428711A1 Method and apparatus for clarifying liquids |
| 05/28/1991 | US5019276 Method of and plant for purifying water |
| 05/23/1991 | DE3938245A1 Liq. filtration by fine mobile magnetic particles layer - subject to variable field and periodically transformed for regeneration |
| 05/07/1991 | US5013461 Circulation, dislodging and reorienting particulate matter engaging filter, removing fine particles from filter without removing filter aid |
| 05/02/1991 | EP0424486A1 Filter for continuous filtration |
| 04/17/1991 | EP0423061A1 Ore dewatering process and compositions therefor |
| 04/16/1991 | US5008018 Process for the reduction in size of the pores of a filter medium for beverages |
| 04/14/1991 | CA2027625A1 Ore dewatering process and compositions therefor |
| 04/09/1991 | US5006251 First step of upward flow solid-liquid separator; non-clogging |
| 04/02/1991 | US5004860 Filter system |
| 03/28/1991 | DE3935952A1 Treating kieselguhr slurry for filter use |
| 03/27/1991 | EP0418847A1 Plant for processing a filtration slurry containing essentialy diatomaceous earth and process for operating the plant |
| 03/13/1991 | EP0416908A2 Filter system for rejuvenating lubricating oils |
| 03/13/1991 | EP0375739A4 Water clarification system adapted for removing particulate matter of greater than a predetermined size |
| 03/13/1991 | EP0305447A4 Improved insoluble vinyl lactam clarifiers |
| 03/07/1991 | DE4025740A1 Improving mechanical sepn. of solids in communal waste water treatment - by treating water with flocculating agent in an agitated pressure vessel and conveying by pressurised gas supply to filter press separator |
| 03/06/1991 | EP0414879A1 Filter for continuous filtration. |
| 03/05/1991 | US4997577 Systems and methods for removing undesired matter from blood cells |
| 02/27/1991 | EP0413940A2 Device for continuous and automatic draining sludge, especially sewage sludge |
| 02/26/1991 | US4995972 Method and apparatus for removing liquid from permeable material |
| 02/21/1991 | WO1991001944A1 Process and apparatus for recycling food processing water |
| 02/19/1991 | WO1991002649A1 Precoat septum with a continuous filament yarn |
| 02/19/1991 | CA2064788A1 Precoat septum with a continuous filament yarn |
| 02/06/1991 | EP0410961A1 A method and an apparatus for separating solid particles from a liquid. |
| 02/05/1991 | US4990595 Process for lowering the melt viscosity of aromatic polycarbonates, aromatic polyester carbonates and aromatic and/or araliphatic polyesters with super-critical gases |
| 02/05/1991 | US4990264 Using alkoxylated C6-C11 alcohol or alkanoic acid |
| 01/31/1991 | DE4013979A1 Device for cleaning contaminated water - where water is treated with flocculating agent before being filtered in bag filter, to avoid clogging of filter pores |
| 01/29/1991 | US4988448 Method for removing substances from a solution |
| 01/22/1991 | CA1279271C Cross-flow filtration |
| 01/16/1991 | EP0407884A2 Device for conditioning and dewatering sludges in a filter press |
| 01/16/1991 | EP0407735A2 Method for dewatering sludges in filterpresses |
| 01/09/1991 | EP0406424A1 Process for recovering crystals from slurry |
| 01/04/1991 | WO1991000249A1 Method of concentrating and dehydrating slurried sludge |
| 12/25/1990 | US4980075 Coolant filter composition |
| 12/25/1990 | US4979969 Heat resistant porous support |
| 12/19/1990 | EP0344152B1 Process and installation for dewatering waste water sludge |