| Patents for B01D 29 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups; filtering elements therefor (33,527) |
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| 02/17/1981 | US4251366 For filterin a liquid medium directly into a storage container |
| 02/11/1981 | EP0023839A1 Screen assembly |
| 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 | US4250036 Conveying means for use in filtering devices |
| 02/10/1981 | US4249292 Method of assembling self-cleaning helical spring filter |
| 02/03/1981 | US4248714 Filter |
| 02/03/1981 | US4248713 Filtration plant |
| 02/03/1981 | CA1094951A1 Tubewells |
| 01/27/1981 | US4247399 Filtering and particulate washing device |
| 01/27/1981 | US4247397 Eaves trough shield |
| 01/27/1981 | US4247394 Filter element and method of use |
| 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 | US4246122 Prefilt directing impermeable membrane of varying force exertion |
| 01/20/1981 | US4246107 Separation of lymphocytes from lymphocyte-containing suspension by filtration |
| 01/20/1981 | US4246102 Water treatment by precipitation filtration and flocculation |
| 01/20/1981 | US4245666 Collecting device for ceiling leaks |
| 01/13/1981 | US4244820 Fluid purification system |
| 01/13/1981 | US4244287 Two-stage mechanical dewatering of sewage sludge |
| 01/13/1981 | CA1093477A1 Strainer improvement |
| 01/07/1981 | EP0022021A1 A hydraulic motor having a reciprocating piston |
| 01/07/1981 | EP0020598A1 Disposable filter bag and a method of making extraction beverages. |
| 01/06/1981 | US4243536 Cross-flow filtration apparatus |
| 01/06/1981 | US4243535 Filter assembly with telescopic elements |
| 01/06/1981 | US4243533 Filters with filtrate chamber overflow partitions having plural outlets |
| 01/06/1981 | US4243527 Particulate material separator and method |
| 12/30/1980 | US4242206 Water-insoluble crosslinked sodium carboxymethyl cellulose fibers and fiberglass filter |
| 12/30/1980 | US4242205 Traveling belt filter |
| 12/30/1980 | US4241691 Doctor blade holder |
| 12/30/1980 | CA1092549A1 Vortex separator with coaxial inlet and lightweight reject pipelines |
| 12/30/1980 | CA1092519A1 Blood filter |
| 12/30/1980 | CA1092518A1 Onstream backflush filter |
| 12/30/1980 | CA1092517A1 Highspeed water flow filter and method of filtering water in a graduated manner |
| 12/23/1980 | US4240864 Spray spinning collection unit |
| 12/16/1980 | US4239627 Filtering member and method for manufacturing the same |
| 12/16/1980 | US4238877 Fabrication of screen devices |
| 12/16/1980 | EP0016813A4 Core spun filtration roving. |
| 12/16/1980 | CA1091596A1 Filter element |
| 12/16/1980 | CA1091589A1 Wire-wrapped screen with upstream baffle |
| 12/12/1980 | EP0016216A4 Electrically grounded filter plate. |
| 12/10/1980 | EP0020093A1 Liquid filter |
| 12/10/1980 | EP0019794A1 Water purification apparatus |
| 12/09/1980 | US4238324 Apparatus for separating impurities from fiber suspensions |
| 12/09/1980 | CA1091164A1 Process and apparatus for cleaning particulate filters |
| 12/02/1980 | US4237014 Flowable material passage with interposable slide member |
| 12/02/1980 | US4237011 Quick change cartridge filter |
| 12/02/1980 | US4237010 Interconnector for filtration modules |
| 12/02/1980 | CA1090712A1 Multibed filter backwashed by movable isolation hood |
| 11/27/1980 | WO1980002515A1 Sludge decanter thickener |
| 11/26/1980 | EP0019538A1 Sludge settling and thickening apparatus |
| 11/25/1980 | US4235724 High capacity waste water treatment system |
| 11/18/1980 | US4234417 Fibrous stock screen |
| 11/18/1980 | US4234413 Method and apparatus for self-cleaning drilling mud separation system |
| 11/12/1980 | EP0018610A1 Corrugating apparatus and process |
| 11/12/1980 | EP0018562A1 Apparatus for continuous treatment of pulp |
| 11/12/1980 | EP0018527A2 Return-flow filtration device, especially for a domestic water system |
| 11/11/1980 | US4233159 Solid-liquid separation element and apparatus |
| 11/11/1980 | US4233157 Travelling sheet, flat-bed filter apparatus and system |
| 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 |
| 10/29/1980 | EP0018282A2 Liquid filter |
| 10/29/1980 | EP0017873A1 A blood filter device |
| 10/28/1980 | US4230576 Method of cleaning filter elements thereof |
| 10/28/1980 | US4230575 Uniform distribution of a liquid over a filter surface |
| 10/28/1980 | US4230574 Method for filtering frying oil |
| 10/28/1980 | US4230572 Filter method and apparatus |
| 10/21/1980 | US4229306 Housing for single-use filter units |
| 10/21/1980 | US4229301 Mechanically raked bar screen |
| 10/21/1980 | US4229202 Wastewater treatment with ultraviolet disinfection and increased capacity |
| 10/21/1980 | US4228917 Gasket for yarn spinning pack |
| 10/21/1980 | CA1087994A1 Dirt filter for water pipes |
| 10/15/1980 | EP0017622A1 Filtration apparatus with a chamber, and a helicoidally shaped support bearing a filter |
| 10/15/1980 | EP0016813A1 Core spun filtration roving |
| 10/14/1980 | US4228012 End cap coupler system for linking one filter cartridge to another filter cartridge or functional member |
| 10/14/1980 | US4228011 Fuel oil filter cartridge |
| 10/07/1980 | CA1087109A1 Filter |
| 10/02/1980 | WO1980002075A1 Method and apparatus for determining both water-insoluble and water-soluble plant fibre components in plant material |
| 10/01/1980 | EP0016241A1 Apparatus for removing condensate from steam lines, and the like |
| 10/01/1980 | EP0016220A1 Process of filtration. |
| 10/01/1980 | EP0016216A1 Electrically grounded filter plate. |
| 09/30/1980 | US4225442 Core spun filtration roving |
| 09/30/1980 | US4225441 Filter element |
| 09/23/1980 | US4224168 Holder for filter bags |
| 09/23/1980 | US4224161 Oil pump inlet screen assembly |
| 09/23/1980 | US4224160 Bottom loaded filter for radioactive liquids |
| 09/23/1980 | US4224153 Process and a filter for filtering a liquid containing solids having a substantially different specific gravity relative to the liquid |
| 09/23/1980 | CA1086237A1 Screen with cantilevered reenforcement for foil stress |
| 09/23/1980 | CA1086036A1 Method of attachment of a metallic end-piece to a tubular element |
| 09/16/1980 | US4222878 Raking equipment for trashracks |
| 09/16/1980 | US4222875 Filter element shutoff valve |
| 09/16/1980 | US4222863 Screening apparatus and method |
| 09/09/1980 | US4221670 Filter for liquids |
| 09/09/1980 | US4221667 Whirlfilter |
| 09/09/1980 | US4221666 For removing residue deposits on filtration elements |
| 09/09/1980 | CA1085348A1 Angularly disposed blades for a cylindrical suspension classifier |
| 09/09/1980 | CA1085316A1 Method and apparatus for effecting the cleaning of a fluid filter |
| 09/09/1980 | CA1085315A1 Separation of solids and liquids involving filtrate expulsion by gas |