| 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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| 02/27/1991 | CN2071975U Regurgitation type filter |
| 02/27/1991 | CN2071974U Coal slurry thickener |
| 02/26/1991 | US4995973 Modular longitudinal spray finisher |
| 02/26/1991 | US4995972 Method and apparatus for removing liquid from permeable material |
| 02/26/1991 | US4995968 Filters |
| 02/26/1991 | US4995239 Liquid line service and process device |
| 02/24/1991 | CA2013207A1 Cylindrical filter media with support structure |
| 02/21/1991 | WO1991001797A1 Mechanism for removing solid particles from a liquid-circulating system |
| 02/21/1991 | WO1991001789A1 Process for filtering liquids containing solids |
| 02/19/1991 | WO1991002649A1 Precoat septum with a continuous filament yarn |
| 02/19/1991 | WO1991002579A1 Cooking oil filter |
| 02/19/1991 | US4994332 Continuous removal of precipitate |
| 02/19/1991 | US4994190 Serial crossflow filtration assembly |
| 02/19/1991 | US4994181 Fryer oil filtering system with clamping frame and thrust applying means |
| 02/19/1991 | CA2064788A1 Precoat septum with a continuous filament yarn |
| 02/19/1991 | CA1280377C Filter assembly |
| 02/13/1991 | EP0412617A1 Frier having filtering mechanism |
| 02/13/1991 | EP0412332A1 Sifting device |
| 02/12/1991 | US4992171 Filtering device with agitator |
| 02/12/1991 | US4992166 Locking means connecting housing to closure |
| 02/12/1991 | US4991720 Apparatus for dividing a suspension of fibrous cellulose pulp |
| 02/12/1991 | CA1280076C Method and apparatus for thickening a suspension |
| 02/08/1991 | WO1991001790A1 Strainer |
| 02/08/1991 | CA2064586A1 Strainer |
| 02/07/1991 | WO1991001173A1 Filter device |
| 02/07/1991 | DE3925650A1 Fibrous content sepd. from liq. manure by worm screen - is compacted into plug by worm screw occupying part of filter casing |
| 02/06/1991 | EP0411939A1 Liquid waste separator |
| 02/06/1991 | EP0411163A1 Filtering device providing continuous cleaning of the filtering surfaces |
| 02/06/1991 | EP0410961A1 A method and an apparatus for separating solid particles from a liquid. |
| 02/06/1991 | CN1011483B Cylindrical element for filtering and separation |
| 02/06/1991 | CN1011482B Flat element for filtering and separation |
| 02/06/1991 | CN1011481B Conical element for filtering and separation |
| 02/06/1991 | CN1011480B Filter of depth layer type |
| 02/05/1991 | US4990595 Process for lowering the melt viscosity of aromatic polycarbonates, aromatic polyester carbonates and aromatic and/or araliphatic polyesters with super-critical gases |
| 02/05/1991 | US4990256 Method, device and filter module for the filtration of liquids in cross-flow operation |
| 01/31/1991 | DE4023497A1 Continuous dual functional filter for slurry under pressure - also scrapes cake piled on filter medium, compresses and discharges precipitated cakes continuously |
| 01/31/1991 | DE4013979A1 Device for cleaning contaminated water - where water is treated with flocculating agent before being filtered in bag filter, to avoid clogging of filter pores |
| 01/31/1991 | DE3924658A1 Verfahren zur filtration feststoffhaltiger fluessigkeiten A method for filtration liquids containing solids |
| 01/30/1991 | EP0410586A2 Filters |
| 01/30/1991 | EP0410102A2 Straining apparatus |
| 01/30/1991 | CN1048809A Micro net holes filter machine |
| 01/30/1991 | CN1048796A Filtration device |
| 01/29/1991 | US4988448 Method for removing substances from a solution |
| 01/29/1991 | US4988440 Cooking oil filter |
| 01/29/1991 | US4988437 In-line leaf trap |
| 01/29/1991 | CA1279583C Trash rack |
| 01/24/1991 | WO1991000766A1 Jig and device for filtration |
| 01/23/1991 | EP0409817A1 Filtering apparatus for separating solid and suspended matter from liquids |
| 01/23/1991 | EP0409400A1 Strainer cup for pop-up drain plug |
| 01/23/1991 | EP0409024A1 Filtering device |
| 01/23/1991 | EP0408758A1 Apparatus for indicating contamination degree in a hydraulic circuit and determining method therefor |
| 01/23/1991 | CN1048663A Multifunctional continuous pressure filter for fluid with high efficiency |
| 01/23/1991 | CA2020628A1 Filters |
| 01/22/1991 | US4986913 Coarse to progressively finer filter layers |
| 01/22/1991 | US4986912 Disposable insert for a fluid filtration canister |
| 01/22/1991 | US4986904 Color coded disposable filter holder |
| 01/22/1991 | US4986900 Sectional screen cylinder |
| 01/22/1991 | CA2021388A1 Filtration device |
| 01/22/1991 | CA1279271C Cross-flow filtration |
| 01/19/1991 | CA2021346A1 Filtering apparatus for separating solid and suspended matter from a liquid |
| 01/15/1991 | US4985146 Filtering system |
| 01/10/1991 | WO1991000135A1 Membrane filtration apparatus |
| 01/10/1991 | DE3921340A1 Device and procedure for de-watering and filtering mud, sludge, etc. - by passing material to be dried down between two filter surfaces and pressing to extract water |
| 01/10/1991 | DE3920196A1 Trash-removal equipment from gutter - has inclined cylindrical grille of smaller free cross=section at bottom end |
| 01/09/1991 | EP0407363A1 A self-cleaning vacuum filter with permanent, endless filter media particularly for industrial lubricating and cooling liquids |
| 01/09/1991 | EP0407255A1 Filter for the automatic purification of liquid circuits |
| 01/09/1991 | EP0370004A4 Filtrate evacuation system |
| 01/09/1991 | CN2068859U Filter element of framed vacuum filter machine |
| 01/09/1991 | CN2068858U Self-cleaning spiral-flow filter |
| 01/09/1991 | CN1011146B High consistency pressure screen and method of separating accepts and rejects |
| 01/08/1991 | US4983292 Seamless filter bag and method of its manufacture |
| 01/08/1991 | US4983290 Slit-tube filter |
| 01/08/1991 | US4983282 Apparatus for removing liquid from a composition and for storing the deliquified composition |
| 01/08/1991 | CA1278777C Screening apparatus |
| 01/03/1991 | DE3935123C1 Filter appts. for pressurised liq. plastic feed pipes - includes filter changing unit and easily replaceable filter holder ring segments between inner and outer housings |
| 01/02/1991 | EP0405642A2 Membrane press with large drainage surface |
| 01/02/1991 | EP0405447A2 Fuel filter |
| 01/02/1991 | EP0388439A4 Filter assembly |
| 01/02/1991 | CN2068414U Metal vane of filter |
| 01/02/1991 | CA1278531C Screening device |
| 01/01/1991 | US4981589 Multi-layer ceramic filter |
| 01/01/1991 | US4981587 Sieve with adjustable throat mechanism discharge |
| 12/27/1990 | WO1990015981A1 Process for the preparation of samples for chemical analysis of liquids by infrared spectroscopy of dry extract and devices for this purpose |
| 12/27/1990 | WO1990015660A1 Bag-like filter |
| 12/27/1990 | WO1990015654A1 Filter and process for manufacturing filters using material cured by ultraviolet radiation for end caps |
| 12/27/1990 | WO1990015653A1 Filter apparatus snap lock cartridge retainer |
| 12/27/1990 | EP0404160A1 Centrifugal separator for coagulable liquid, particularly Diesel fuel |
| 12/27/1990 | EP0403679A1 Multi-well filtration test apparatus |
| 12/26/1990 | CN2068012U Negative pressure automatic cinder device |
| 12/25/1990 | US4979969 Heat resistant porous support |
| 12/25/1990 | US4979315 Filtration apparatus with integral drying by electromagnetic radiation |
| 12/20/1990 | DE3919875A1 Silicone nitride foam filter cartridge used for aggressive media - at high temp. from automatic cleaning machine, comprises axially bored open pored nitride ceramic foam |
| 12/20/1990 | DE3919652A1 Safety unit for multi-element liq. fuel filter - only allows casing to be closed when all elements are correctly installed and/or positioned |
| 12/19/1990 | EP0402657A2 Electrically conductive filter |
| 12/19/1990 | EP0402441A1 Nutsche process filter drive unit |
| 12/19/1990 | EP0344152B1 Process and installation for dewatering waste water sludge |
| 12/19/1990 | CN2067599U Multifunctional water clarifier |
| 12/18/1990 | US4978452 Method for producing wax impregnated filters for investment casting applications |
| 12/18/1990 | US4978450 Filtering element |
| 12/13/1990 | WO1990014884A1 Device for carrying out physico-chemical processes |