| Patents for B01D 35 - Filtering devices having features not specifically covered by groups , or for applications not specifically covered by groups; Auxiliary devices for filtration; Filter housing constructions (28,776) |
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| 09/19/1990 | EP0388199A2 Dosing pump system |
| 09/19/1990 | EP0388004A1 Molten metal pump with filter |
| 09/19/1990 | CN2062251U 滤油器 Oil Filter |
| 09/18/1990 | US4957629 Obstetrical filter and trap |
| 09/18/1990 | US4957625 Ceramic filter modules in series with piston backwash |
| 09/18/1990 | US4957624 Method of and arrangement for purifying contaminated water |
| 09/18/1990 | CA1274137A1 Lubricating oil filtration system for an engine |
| 09/12/1990 | EP0387240A2 Arrangement for a liquid-container receiving a hydraulic pressure agent, especially a lubricating oil |
| 09/12/1990 | EP0386510A1 Filtering device comprising a rotating system |
| 09/12/1990 | CN1045232A Filter cleaning |
| 09/11/1990 | US4956101 Liquid filtration device and method using wave motion |
| 09/11/1990 | US4956086 Filter cartridge with a lugged concentric closure portion |
| 09/11/1990 | US4956081 Fuel filter with diaphragm pump |
| 09/07/1990 | WO1990010211A1 Process and device for filtering liquid or gas samples laden with particles to be analyzed |
| 09/07/1990 | WO1990010147A1 Bypass valve and visual indicator for a fuel system |
| 09/05/1990 | EP0385940A1 Device for the desludging of baths |
| 09/05/1990 | EP0385113A2 Liquid filter |
| 09/05/1990 | EP0374251A4 Device for separating ferromagnetic materials from fluid media |
| 09/05/1990 | CN1045122A Method of cleaning and reclaiming used oils |
| 09/04/1990 | US4954268 Process for removing cellulose ethers from a cellulose ether suspension |
| 09/04/1990 | US4954252 Biflow filter drier |
| 08/30/1990 | DE3904701A1 Filter element for liquids and gases |
| 08/29/1990 | EP0384441A1 Fuel filtering device |
| 08/29/1990 | EP0384440A2 Fuel filtering device |
| 08/29/1990 | EP0384150A1 Portable water purifier |
| 08/29/1990 | EP0384081A2 Compressive and electroosmotic dehydrator |
| 08/21/1990 | CA1272985A1 Upwardly clearing spiral conveyor for vibrating screens operating on viscous material such as paint |
| 08/16/1990 | EP0382097A1 Automatic filter system |
| 08/14/1990 | US4948515 Filter for liquid and method of filtering liquid |
| 08/14/1990 | US4948505 Quick-change filter cartridge and head therefor |
| 08/14/1990 | US4948504 Filter bag carrier with filter seal profile |
| 08/14/1990 | US4948503 Oil filter cover in combination with an oil filter cartridge |
| 08/14/1990 | US4948501 Membrane filter plate |
| 08/14/1990 | US4948500 Membrane filter plate |
| 08/14/1990 | US4948499 Simplified method and apparatus for purification |
| 08/09/1990 | DE3903675A1 Oil filter for cleaning lubrication oil |
| 08/08/1990 | EP0381488A2 Method for the recovery of black oil residues |
| 08/08/1990 | EP0381355A2 Method and apparatus for filtering cooking oil |
| 08/08/1990 | EP0381032A2 Filter body with modular elements |
| 08/07/1990 | US4946600 Water repurification method of city water and its equipment |
| 08/07/1990 | US4946598 Suction strainer and method of assembly |
| 08/07/1990 | US4946589 High volume permanent magnet filter for removing ferromagnetic impurities |
| 08/07/1990 | US4946588 Fluid treatment or monitoring assemblies |
| 08/07/1990 | US4946047 Filter apparatus with stop valve |
| 08/07/1990 | CA2009267A1 Automatic filter system |
| 08/02/1990 | DE3902393A1 Process for separating out solids from a solid/liquid mixture |
| 08/01/1990 | EP0380266A1 Filter cleaning |
| 08/01/1990 | CA2008086A1 Method for the recovery of black oil residues |
| 07/31/1990 | US4944875 Plural filter tube sequential distribution apparatus |
| 07/31/1990 | US4944871 Filtering device |
| 07/31/1990 | US4944343 Apparatus for heating fuel |
| 07/31/1990 | CA1272099A1 Fluid treatment pressure vessel with a disposable cartridge and valve therefor |
| 07/26/1990 | WO1990007974A1 Filter apparatus |
| 07/26/1990 | WO1990007968A1 Frontal separator system for separating particles from fluids |
| 07/26/1990 | DE3901851A1 Filter press and apparatus and process for drying sewage sludge |
| 07/25/1990 | EP0378864A1 Filter assembly for use in a hydraulic circuit |
| 07/25/1990 | CA2008437A1 Filter cleaning |
| 07/24/1990 | US4943379 Fluid flow, backwashing reservoir, valves, shock |
| 07/24/1990 | US4943352 Filters, evaporator plate and head, heater |
| 07/19/1990 | DE3941839A1 Float-supported filter for suspended particles in water - can move freely in all directions |
| 07/18/1990 | EP0377606A1 Process for purifying and regenerating used oils. |
| 07/18/1990 | EP0377602A1 Filter |
| 07/17/1990 | US4941962 Electrostatic adsorptive fluid filtering apparatus |
| 07/17/1990 | US4941789 Apparatus for preventing cross threading in blind, high precision thread engagement |
| 07/17/1990 | CA1271709A1 Suspension liquid separator |
| 07/12/1990 | WO1990007706A1 Apparatus for indicating contamination degree in a hydraulic circuit and determining method therefor |
| 07/11/1990 | EP0377192A1 Coffee or tea making apparatus |
| 07/11/1990 | EP0377054A1 Pressure filter |
| 07/11/1990 | CA2007450A1 Ceramic filter for the filtering of molten metals |
| 07/10/1990 | US4940550 Chemical flocculant |
| 07/10/1990 | US4940535 Solids flow distribution apparatus |
| 07/10/1990 | US4940489 Molten metal filtration system and process |
| 07/10/1990 | US4940384 Molten metal pump with filter |
| 07/05/1990 | DE3941016A1 Cyclone filter - having housing, deflection plates, screw conduit, partition wall, central opening, slots, screw-insert, pptn. chamber etc. |
| 07/04/1990 | EP0376443A2 Oil filter |
| 07/04/1990 | EP0139003B1 Filter assembly |
| 06/28/1990 | WO1990006799A1 Oil filter for internal combustion engines |
| 06/28/1990 | DE3843028A1 Process and apparatus for the separation of poorly filterable suspensions in a filter press |
| 06/28/1990 | CA2006862A1 Coffee or tea machine with water filter |
| 06/27/1990 | EP0374280A1 Disposable filter |
| 06/27/1990 | EP0374251A1 Device for separating ferromagnetic materials from fluid media |
| 06/26/1990 | US4936348 Rotary diverter valve having flat valve interfaces |
| 06/26/1990 | CA1270770A1 Liquid filtering system |
| 06/21/1990 | DE3842557A1 Apparatus and process for separating off solids from a liquid by filtration |
| 06/21/1990 | DE3842436A1 Pipe filter |
| 06/20/1990 | CN2058345U Domestic filter for super-purification of running water |
| 06/20/1990 | CN1043087A Magnetic gravity filter |
| 06/19/1990 | US4935151 Continuous filtration and backflushing of successive filter segments, recycling; defect reduction |
| 06/19/1990 | US4935142 Apparatus for retaining variable number of sheet membrane elements and a method for the use thereof |
| 06/19/1990 | US4935137 Filter apparatus for a liquid mixture |
| 06/19/1990 | US4935135 Oil filter |
| 06/19/1990 | US4935134 Filter housing of synthetic material |
| 06/19/1990 | US4935129 Closure device for a scupper drain |
| 06/19/1990 | US4935128 Motorcycle engine lubricating oil filter apparatus |
| 06/14/1990 | WO1990006396A1 Method of and device for fractionating suspensions |
| 06/13/1990 | EP0373048A1 Device for the purification of liquids charged with impurities, and filter bag therefor |
| 06/12/1990 | US4933093 Fuel filter |
| 06/12/1990 | US4933080 Housing with replaceable filter cartridge for use with shower head |
| 06/12/1990 | US4933079 Fuel filter coupling |
| 06/12/1990 | US4932205 Bypass valve and visual indicator for a fuel system |