| Patents for B01D 37 - Processes of filtration (4,716) |
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| 08/29/1989 | US4861495 Press belt device for horizontal filters |
| 08/16/1989 | CN1034683A Process for fine coal cleaning |
| 08/10/1989 | DE3802816A1 Candle-shaped filter element, filter candle |
| 08/08/1989 | US4855044 Purification of oils containing solid matters in suspension |
| 08/02/1989 | EP0326359A2 Precoat filter element |
| 08/01/1989 | CA1258024A1 Process for preparing highly concentrated aqueous press cakes of solids |
| 07/26/1989 | EP0325188A2 Method for the reduction of the pore-size of a filter medium for beverages |
| 07/13/1989 | WO1989006154A1 Agglutination reaction vessel |
| 07/11/1989 | CA1257413A1 Apparatus for clarification of water |
| 06/28/1989 | EP0321712A1 Apparatus for filtering an addition of a reagent |
| 06/27/1989 | US4842731 Coolant filter manufacture and composition for use in same |
| 06/27/1989 | CA1256295A1 Sealing screen for waste dumps |
| 06/20/1989 | US4840736 Process for producing combustible sewage sludge filter cakes in filter presses |
| 06/15/1989 | WO1989005185A1 Production of filter cakes and the like |
| 06/13/1989 | US4839296 Treating hydrophobic polytetrafluoroethylene semipermeable membrane with surfactant to make membrane hydrophilic |
| 06/13/1989 | CA1255474A1 Process for the systematic treatment of exhaust gases |
| 05/30/1989 | US4834878 Apparatus for separating liquid from sludge |
| 05/30/1989 | CA1255016A1 Flocculants and processes for their preparation |
| 05/24/1989 | EP0317525A1 A method of removing heavy metals from waste liquids discharged by dental surgery equipment, and a device for the implementation of such a method |
| 05/24/1989 | EP0316997A2 System and method for monitoring and/or controlling liquidsolid separation processes |
| 05/16/1989 | US4830746 Device for separating solids and intermixed liquids from industrial waste |
| 05/09/1989 | US4828622 Process for preparing highly concentrated aqueous press cakes of solids |
| 05/03/1989 | DE3836064A1 Verfahren zum abtrennen von ton aus ultrafeiner kohle und zur anschliessenden entwaesserung der kohle sowie vorrichtung zur durchfuehrung des verfahrens A method for disconnecting from ton of ultrafine coal and subsequent dehydration of the coal and apparatus for performing the method |
| 04/25/1989 | US4824581 Flocculants |
| 04/20/1989 | WO1989003240A1 Process and plant for clarifying liquids, in particular raw juice |
| 04/20/1989 | WO1989003239A1 A method of and plant for purifying water |
| 04/19/1989 | EP0311604A1 Method and apparatus for qualitative and/or quantitative analysis of antigens, antibodies, mircroorganisms or other cells. |
| 04/11/1989 | US4820400 Introducing free charge before filtration with undewaxed oil |
| 04/05/1989 | EP0310310A2 Filter aid for analytical use and method for preparing the same |
| 04/04/1989 | US4818415 Method and apparatus for removing liquid from permeable material |
| 04/04/1989 | US4818414 Retaining waste filtrate |
| 04/04/1989 | CA1252016A1 Mineral dewatering method |
| 03/16/1989 | DE3830344A1 Process and apparatus for waste water purification |
| 03/14/1989 | US4812234 Oil sludge conditioning equipment |
| 03/09/1989 | WO1989001816A1 Water clarification system adapted for removing particulate matter of greater than a predetermined size |
| 03/08/1989 | EP0305897A2 Compact cooling water treatment plant |
| 03/08/1989 | EP0305606A1 Back-wash filter assembly |
| 03/08/1989 | EP0305447A1 Improved insoluble vinyl lactam clarifiers |
| 03/07/1989 | US4810393 Heating, centrifuging, filtration |
| 03/07/1989 | US4810371 Process for fine coal cleaning |
| 02/22/1989 | EP0303835A1 Fuel filter |
| 02/14/1989 | US4804481 Helical spring apparatus and process for detaching filter cake |
| 02/14/1989 | US4804464 System for in situ upgrading of the purity of a liquid and flushing a filtration system |
| 02/09/1989 | WO1989000846A1 Method for size separation of particles |
| 01/19/1989 | DE3722238A1 Verfahren zur abreinigung von filterkerzen in anschwemmfiltern und vorrichtung zur durchfuehrung des verfahrens Precoat method for cleaning system of filter candles in and apparatus for performing the method |
| 01/12/1989 | WO1989000074A1 Two-stage batch filter apparatus and filtration process |
| 01/12/1989 | WO1989000073A1 Process and device for cleaning filter candles in precoated filters |
| 01/10/1989 | CA1248644A1 Wastewater treatment plant and method |
| 01/10/1989 | CA1248486A1 Filter-centrifuge series combination for improved oil- wax separation |
| 01/03/1989 | US4795570 Two-stage batch filter apparatus and filtration process |
| 01/03/1989 | US4795564 Ion exchanging |
| 12/29/1988 | WO1988010239A1 Process and apparatus for producing drinking water |
| 12/27/1988 | US4793934 Method for enhancing the separation capacity of a multi-bed filtration system |
| 12/20/1988 | US4792406 Mixing with cationic amine salt |
| 12/20/1988 | US4792400 Irradiation crosslinking |
| 12/13/1988 | US4790933 Dynamic filtration unit and process of use |
| 11/23/1988 | EP0291716A2 Method for enhancing the separation capacity of a multibed filtration system |
| 11/22/1988 | US4786408 Draining precoat liquid prior to feeding liquid |
| 11/15/1988 | US4785082 Process for preparing a highly concentrated aqueous press cakes of an azo disperse dye from dilute aqueous suspension thereof wherein surfactant is added before the dye is isolated |
| 11/08/1988 | US4782891 Corrosion inhibiting coolant filter |
| 11/03/1988 | DE3805299A1 Integral filter for separating off fluid constituents and housing therefor |
| 11/01/1988 | CA1243999A1 Use of vinyl addition copolymers to improve quality of lubricating oil additives |
| 10/25/1988 | US4780219 Bed of ground polyethylene particles |
| 10/25/1988 | US4780213 Filter media and method of filtration |
| 10/25/1988 | US4780197 Chlorination module for cartridge filter unit |
| 10/05/1988 | CN87205500U 压差传感器 Differential pressure sensor |
| 09/28/1988 | EP0283870A1 Dewatering process for filter cakes, and apparatus for carrying out the process |
| 09/27/1988 | US4774009 Method for dewatering corn wet milling products |
| 09/27/1988 | US4774004 Process for filtering liquors used in dry cleaning |
| 09/22/1988 | WO1988007061A1 Improved insoluble vinyl lactam clarifiers |
| 09/21/1988 | EP0283381A1 Process for the purification and the valorization of hydrocarbon oil suspensions |
| 09/20/1988 | US4772399 Basification, heating, settling |
| 09/13/1988 | US4770793 Filter cake |
| 09/07/1988 | EP0281320A2 Method for filtering a fluid |
| 09/06/1988 | US4769131 Ultraviolet radiation purification system |
| 09/01/1988 | DE3805361A1 Integral filter for fluids made of a plurality of filter elements stacked one inside the other having different retention capacities and housing therefor |
| 08/30/1988 | CA1241463A1 Process and apparatus for handling waste from oil well operations |
| 08/23/1988 | US4765906 Filter support having two plies connected together at parallel; flexible |
| 08/23/1988 | US4765545 Burning, grinding, reducing particle size, classifying, and collecting |
| 08/16/1988 | US4764588 Insoluble vinyl lactam clarifiers |
| 08/16/1988 | CA1240764A1 Control system for a process |
| 08/09/1988 | US4762624 Apparatus and method for filtration and concentration of suspension |
| 08/03/1988 | EP0276576A1 Metal treatment |
| 08/03/1988 | EP0276546A1 Method and system for treating drill cuttings slurries and the like |
| 08/03/1988 | EP0276352A1 Apparatus and method for filtration and concentration of suspension |
| 07/28/1988 | WO1988005334A1 Methods and apparatus for liquid filtration |
| 07/28/1988 | DE3736657A1 Process for dewatering sewage sludge and plant for carrying out the process |
| 07/26/1988 | US4759858 Process and apparatus for the formation of a filter cake |
| 07/26/1988 | US4759856 Flocculation processes |
| 07/13/1988 | EP0274395A2 Stabilization of cation exchange resins used in precoat filters |
| 07/06/1988 | EP0273720A2 Corrosion inhibiting coolant filter |
| 07/05/1988 | US4755289 Lubricant filter for internal combustion engines |
| 06/21/1988 | US4751901 Composite oil filter |
| 06/15/1988 | EP0270936A1 Method of removal of polycyclic aromatic hydrocarbons from a liquid |
| 06/14/1988 | US4751003 Crossflow microfiltration process for the separation of biotechnologically produced materials |
| 06/08/1988 | EP0269864A1 Filtration device with wetted filtering elements |
| 06/08/1988 | EP0269769A1 Filtration with biogenetic silica |
| 06/08/1988 | CN87108038A Dewatering device of quantitative discharge filter cake |
| 06/07/1988 | US4749496 Filtration through open cell foam containing active powdered materials |
| 05/31/1988 | US4747961 Method and system for treating drill cutting slurries and the like |