| 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) |
|---|
| 09/18/1991 | CN2085056U Water flow indicator for water treating apparatus |
| 09/17/1991 | US5049274 Friction welding process and filter formed thereby |
| 09/17/1991 | US5049273 Suction straining apparatus |
| 09/17/1991 | US5049271 Fuel tank filter |
| 09/17/1991 | US5049269 Filter assembly with spring loaded valve |
| 09/17/1991 | US5049267 Filter arrangement for a fuel tank comprising shaped mesh sections |
| 09/17/1991 | US5049263 Fluid strainer with blockage detection |
| 09/17/1991 | US5049248 Liquid separation process for suspensions by a pulsating electrical current |
| 09/17/1991 | US5048354 Device for sampling a circulating fluid |
| 09/11/1991 | EP0445989A2 Liquid purifying attachment having pressurizing piston |
| 09/11/1991 | CN2084386U Detector filting screen cleaning structure |
| 09/10/1991 | US5047157 Flexible tubular conduit; flushing port |
| 09/05/1991 | WO1991012873A1 Filter for a fuel system |
| 09/03/1991 | US5045200 Apparatus and method of filtering fatty acids from cooking oil |
| 09/03/1991 | CA1288294C Pressure differential indicator with non-mechanical thermal lockout |
| 08/28/1991 | EP0443747A2 Flow collector/distributor for water treatment tank |
| 08/28/1991 | EP0443385A2 Process and device for separating solids from mud with screw presses |
| 08/28/1991 | EP0442944A1 Horizontal removable pump for filtration systems. |
| 08/28/1991 | CN2083668U Breath valve |
| 08/27/1991 | US5043048 Electromembrane apparatus and process for preventing membrane fouling |
| 08/27/1991 | CA1288059C Method and system for cleansing a filter bed |
| 08/27/1991 | CA1287974C Filtration apparatus |
| 08/22/1991 | DE4021350A1 Paper sorting sieve - consists of drum on horizontal axis to divide the tank into two chambers |
| 08/21/1991 | EP0442365A2 Key system for filter assembly |
| 08/21/1991 | EP0441794A1 Filter assembly and cartridge therefor. |
| 08/21/1991 | EP0441789A1 Liquid filter. |
| 08/21/1991 | EP0218638B1 Pivot pin bearing for biomedical systems |
| 08/20/1991 | US5041219 Dual chamber water filter |
| 08/14/1991 | EP0441367A2 Oil filter for internal-combustion engines for motor vehicles |
| 08/14/1991 | EP0440798A1 Magnetic filter |
| 08/14/1991 | EP0440747A1 Drilling mud separation system |
| 08/13/1991 | WO1991012061A1 Dual chamber water filter |
| 08/13/1991 | US5039406 Oil filter adapter |
| 08/13/1991 | US5038675 Coffee or tea maker |
| 08/08/1991 | DE4101076A1 Pre-tipping redn. of liq. in sewage sludge - by applying electro-impulses from discharge condenser |
| 08/07/1991 | EP0439901A1 Oil filter |
| 08/07/1991 | EP0439532A1 Device for the parallel filtration of a plurality of samples with automatic control of filtered volumes and of clogging as well as with filter indexing, and filtration method. |
| 08/07/1991 | CN1053679A Diaguostic filter for detecting conductive and semiconductive particles in fluid stream |
| 08/06/1991 | US5037539 Liquid filter with bypass passage |
| 08/02/1991 | CA2026860A1 Oil filter |
| 07/31/1991 | EP0177521B1 Filter element for separating solid material particles from gas or liquid media |
| 07/30/1991 | US5035798 Filtration vessel and end cap lock by a flexible rod |
| 07/30/1991 | US5035797 Key system for filter assembly |
| 07/27/1991 | CA2034997A1 Diagnostic filter for detecting conductive and semiconductive particles in a fluid stream |
| 07/25/1991 | DE4015443A1 Continuously operating filter for varnish - in which filters are changed over automatically |
| 07/24/1991 | EP0438283A1 Oil filter |
| 07/23/1991 | US5034111 Compressive and electro-osmotic dehydrator |
| 07/23/1991 | US5033319 Filtering and sensing assembly and system |
| 07/19/1991 | CA2034245A1 Oil filter |
| 07/17/1991 | EP0437311A1 Solids removal device |
| 07/16/1991 | US5032293 Basket filter assembly with inclined nozzle |
| 07/10/1991 | CN2080562U Turbine oil purifying device |
| 07/10/1991 | CN2080510U Multiple magnetizing water-purifier |
| 07/09/1991 | US5030346 Pump for filtration system |
| 07/09/1991 | CA1285891C Straining and stop valve |
| 07/08/1991 | EP0452432A4 Oil filter construction for hand spinning. |
| 07/03/1991 | EP0278952B1 Filter arrangement |
| 07/03/1991 | CN2079992U Counter-blow type filter |
| 06/26/1991 | EP0434556A1 High intensity wet magnetic separator |
| 06/26/1991 | EP0433664A1 Liquid filter |
| 06/26/1991 | EP0433587A2 Screen changer apparatus with cylindrical screens |
| 06/26/1991 | EP0433387A1 Filtration apparatus and method |
| 06/25/1991 | CA1285247C Acoustical removal of particles from magnetic matrix |
| 06/25/1991 | CA1285246C Diverting flow chamber |
| 06/18/1991 | US5024761 High-strength quick-disconnect tube filter |
| 06/18/1991 | US5024760 Easily removable oil filter |
| 06/18/1991 | US5024268 Corrosion inhibiting coolant inhibitor container |
| 06/18/1991 | US5023990 Device and method for removably retaining components in a smooth bore |
| 06/13/1991 | WO1991008036A1 Device for filtering contaminated liquids, in particular water |
| 06/11/1991 | US5022986 Manifold and disposable filter assembly |
| 06/11/1991 | US5022147 Method of assembling a suction strainer |
| 06/09/1991 | WO1991008819A1 Filter arrangement |
| 06/06/1991 | DE3939523A1 Control switch assembly for fluid cleansing columns - has central distributor switch with inlet and outlet pipes |
| 06/06/1991 | DE3939502A1 Vorrichtung zur filtration von verunreinigten fluessigkeiten, insbesondere von wasser Apparatus for the filtration of contaminated liquids, in particular water |
| 06/05/1991 | EP0429700A1 Apparatus for the continuous purification of liquids, and in particular of water, by means of the technique of high-gradient magnetic filtration |
| 06/05/1991 | CN2078193U Domestic plastic water filter |
| 06/04/1991 | US5021151 Plastic impeller pump and filtration unit for semi-conductor etching system |
| 06/04/1991 | US5020610 Removable filter fluid flow shutoff apparatus |
| 05/29/1991 | CN2077744U Vertical net comb type dirt cleaning machine |
| 05/29/1991 | CN2077743U Drinking water purifier |
| 05/29/1991 | CN2077742U 水箱过滤器 Tank filter |
| 05/28/1991 | US5019257 Parallel filtering circuit with conduits of different rates |
| 05/28/1991 | US5019255 Device for separation of a liquid medium containing constituents which are separable in a filter |
| 05/28/1991 | US5019251 Filter apparatus with a spring loaded safety valve plate |
| 05/28/1991 | CA1284461C Raking apparatus |
| 05/23/1991 | DE3938686A1 Fuel filter unit for diesel vehicles - has an internal space which contains filter cartridge surrounded by at least one annular space |
| 05/23/1991 | DE3938566A1 Recovery of cleaning balls from coolant flow after heat exchanger - saves power with main flow produced vortex to lift balls and convey them to suction openings |
| 05/23/1991 | DE3938245A1 Liq. filtration by fine mobile magnetic particles layer - subject to variable field and periodically transformed for regeneration |
| 05/21/1991 | US5017286 Faucet-mounted water filter with wall inlet and annular chamber |
| 05/21/1991 | US5017285 Fuel filter and cartridge assembly |
| 05/21/1991 | US5017241 Cleaning filters |
| 05/21/1991 | CA1284298C Adjustable drain cover |
| 05/16/1991 | WO1991006357A1 Clogging indicator |
| 05/16/1991 | DE4036312A1 Oil strainer for automatic gearbox - is held in place by cover allowing insertion and removal |
| 05/16/1991 | DE4018310C1 Filtering plastic melts - includes using an arrangement which incorporates melt channel in housing and rotatable sieve plate inside sieve chamber |
| 05/14/1991 | US5015398 Filters for removal of particles and bubbles from photographic emulsions for photographic films |
| 05/14/1991 | US5015351 Electroosmosis, impressing a current, effecting a time controlled transition |
| 05/14/1991 | US5014775 Oil cooler and manufacturing method thereof |
| 05/08/1991 | EP0426370A2 A method and a device for cleaning drums |
| 05/08/1991 | CN2076439U Combined oil filter outside box |