| 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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| 03/10/1981 | CA1097259A1 Electrofiltration system for purifying organic liquids |
| 03/10/1981 | CA1097229A1 Filter housing |
| 03/10/1981 | CA1097228A1 Water purifier with bypass |
| 03/03/1981 | US4253967 Defoaming and recycling during surgery |
| 03/03/1981 | CA1096900A1 Oil pump inlet screen assembly |
| 02/24/1981 | US4252650 Water purifying device |
| 02/17/1981 | US4251375 With a covering of a polymeric water-repellant foam |
| 02/17/1981 | US4251374 Interchangeable filter apparatus |
| 02/17/1981 | US4251352 Inclined separation screen for agitation tank |
| 02/17/1981 | CA1095838A1 Unclogging an electromagnetic filter by washing with service liquid |
| 02/11/1981 | EP0023899A1 Device for dewatering aqueous suspensions and slurries |
| 02/11/1981 | EP0023548A1 Multipart filter housing for the incorporation of several cartridge-shaped filter elements |
| 02/11/1981 | EP0023491A1 Filter thermal bypass valve. |
| 02/10/1981 | US4250039 Transmission filter |
| 02/10/1981 | US4250038 Screen device and method |
| 02/10/1981 | US4250037 Plumbing fixture with integral strainer |
| 02/10/1981 | US4250024 Glass bead separator |
| 02/10/1981 | US4249994 Method for unclogging an electromagnetic filter and an installation for carrying out said method |
| 02/03/1981 | US4248709 Method of filtering sewer scum and apparatus therefor |
| 02/03/1981 | US4248686 For removal of fine solid particles from liquefaction product |
| 02/03/1981 | CA1094951A1 Tubewells |
| 01/27/1981 | US4247399 Filtering and particulate washing device |
| 01/27/1981 | US4247398 High gradient magnetic separation apparatus |
| 01/27/1981 | US4247397 Eaves trough shield |
| 01/22/1981 | WO1981000058A1 Dry cleaning of pressure filters for liquids |
| 01/21/1981 | EP0022463A1 Settling-filter device for the filtration of turbid liquids, and filtration process using such a device |
| 01/20/1981 | US4246115 Multi-valve interlock apparatus |
| 01/20/1981 | US4246110 Compensating device for filter contaminant indicating system |
| 01/20/1981 | US4246011 Vacuum cleaning apparatus |
| 01/13/1981 | US4245011 Chemical and electrochemical devices |
| 01/13/1981 | US4244822 Industrial technique magnetic apparatus |
| 01/13/1981 | US4244804 Slime and sludge dewatering |
| 01/13/1981 | CA1093477A1 Strainer improvement |
| 01/07/1981 | EP0022072A1 Method and apparatus for concentrating aqueous sludge by electroosmosis |
| 01/07/1981 | EP0021065A1 Filtrating and centrifuging receptacle |
| 01/06/1981 | US4243536 Cross-flow filtration apparatus |
| 12/30/1980 | US4242207 Filter and fluid analysis system |
| 12/30/1980 | US4242200 Filters for purifying fluids containing ferromagnetic particles |
| 12/23/1980 | US4240910 Method and apparatus for clarifying coke quenching water |
| 12/16/1980 | US4238877 Fabrication of screen devices |
| 12/12/1980 | EP0016216A4 Electrically grounded filter plate. |
| 12/11/1980 | WO1980002650A1 Process for concentrating an aqueous sludge by electro-osmosis |
| 12/10/1980 | EP0019794A1 Water purification apparatus |
| 11/26/1980 | EP0019554A1 Filtration device |
| 11/25/1980 | US4235724 High capacity waste water treatment system |
| 11/18/1980 | US4234317 Apparatus and method for fractionation of lipoproteins |
| 11/12/1980 | EP0018562A1 Apparatus for continuous treatment of pulp |
| 11/11/1980 | US4233159 Solid-liquid separation element and apparatus |
| 11/11/1980 | CA1089377A1 Turbulence amplifier baffle |
| 11/11/1980 | CA1089372A1 Method of and apparatus for flow spreading |
| 11/04/1980 | US4231870 Process for regeneration of a filter medium |
| 11/04/1980 | CA1088876A1 Bar screen with secondary filter in the conversion of animal waste |
| 10/28/1980 | US4230582 Drain traps with strainer means |
| 10/28/1980 | US4230574 Method for filtering frying oil |
| 10/28/1980 | US4230572 Filter method and apparatus |
| 10/28/1980 | CA1088460A1 Radial flow electrostatic filter |
| 10/21/1980 | US4229389 Gas diffuser, aerator, or sparger apparatus |
| 10/21/1980 | US4229301 Mechanically raked bar screen |
| 10/21/1980 | CA1087994A1 Dirt filter for water pipes |
| 10/21/1980 | CA1087993A1 Housing for multiplate filter |
| 10/15/1980 | EP0017622A1 Filtration apparatus with a chamber, and a helicoidally shaped support bearing a filter |
| 10/15/1980 | EP0016806A1 Oil reconditioning filter. |
| 10/14/1980 | US4228089 Of fatty acid esters |
| 10/14/1980 | US4228012 End cap coupler system for linking one filter cartridge to another filter cartridge or functional member |
| 10/14/1980 | US4227969 For use with internal combustion engines |
| 10/14/1980 | US4227901 Filter-drier for heat pump systems |
| 10/07/1980 | US4226716 Rotary filter |
| 10/07/1980 | CA1087132A1 Method for coalescing mercury particles |
| 10/07/1980 | CA1087109A1 Filter |
| 10/02/1980 | WO1980001996A1 Device for rectification of drilling mud |
| 10/01/1980 | EP0016220A1 Process of filtration. |
| 10/01/1980 | EP0016216A1 Electrically grounded filter plate. |
| 09/23/1980 | US4224167 Filler tube and filter attachment unit for fuel |
| 09/23/1980 | US4224161 Oil pump inlet screen assembly |
| 09/23/1980 | US4224160 Bottom loaded filter for radioactive liquids |
| 09/23/1980 | US4224135 Cross-flow electrofilter and method |
| 09/18/1980 | WO1980001882A1 Gas diffuser,aerator,or sparger apparatus and method |
| 09/17/1980 | EP0015808A1 Filter for purifying a high-pressure and high-temperature fluid, containing ferromagnetic particles |
| 09/16/1980 | US4222875 Filter element shutoff valve |
| 09/04/1980 | WO1980001763A1 Filtering scraper |
| 09/03/1980 | EP0014780A1 Welded flexible screen |
| 09/02/1980 | US4220530 Fish tank filter |
| 09/02/1980 | CA1084873A1 System method for electric dewatering of solids suspension |
| 09/02/1980 | CA1084851A1 Filter holding means |
| 08/26/1980 | US4219420 Arrangement for and a process of filtering a contaminated medium |
| 08/26/1980 | US4219415 Method and apparatus for disposal of organic wastes |
| 08/26/1980 | CA1084215A1 Dirt remover for a water tank |
| 08/19/1980 | US4218320 Lubricating oil filter device |
| 08/19/1980 | US4217700 Process for drying filtration residue |
| 08/19/1980 | CA1084181A1 Apparatus for removal of impurities from liquids |
| 08/19/1980 | CA1083975A1 Filter arrangement with baffles |
| 08/19/1980 | CA1083893A1 Differential fluid pressure indicating device |
| 08/05/1980 | US4215790 Guard for compressed air fitting bowl |
| 07/29/1980 | US4214992 Water collecting and distributing apparatus disposed in a lower portion of high speed filter basin |
| 07/29/1980 | CA1082608A1 Method and device for dewatering of suspensions in movement |
| 07/29/1980 | CA1082590A1 Wellhead apparatus |
| 07/24/1980 | WO1980001465A1 Filter thermal bypass valve |
| 07/15/1980 | US4212739 Disposable filter canister and housing |
| 07/15/1980 | CA1081621A1 Inline oil filter assembly |
| 07/08/1980 | US4211656 Liquid treating system |