| 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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| 05/30/1990 | EP0370004A1 Filtring and sensing assembly and apparatus |
| 05/29/1990 | US4929829 Method for detecting flooding of a surface |
| 05/29/1990 | US4929363 Method for filtering a fluid |
| 05/29/1990 | US4929353 Portable liquid-solid separator for bulk sludge |
| 05/29/1990 | US4929352 Device for filters, insert for filters and filter |
| 05/29/1990 | CA1269623A1 Apparatus for use in filtering a liquid |
| 05/29/1990 | CA1269550A1 Seamless porous metal article and method of making |
| 05/23/1990 | EP0369330A2 High temperature filter |
| 05/23/1990 | EP0369039A1 Filter for liquid motor fuel |
| 05/22/1990 | US4927604 Multiwell filter plate vacuum manifold assembly |
| 05/22/1990 | US4927547 Electric discharge machining process |
| 05/22/1990 | US4927529 Method and apparatus for separating knots |
| 05/22/1990 | CA1269336A1 Batch type filter system |
| 05/17/1990 | WO1990005035A1 Integral supported filter medium assembly |
| 05/17/1990 | WO1990005014A1 Process and device for folding back the membrane of a pressure filter for suspensions |
| 05/17/1990 | WO1990005013A1 Device for operating a pressure filter |
| 05/17/1990 | WO1990005012A1 Filter for removing hydrophobic substances from electrophoretic enamel coatings |
| 05/17/1990 | WO1990005011A1 Water purifying method and apparatus |
| 05/17/1990 | WO1990005010A1 Filter body with tapered tortuous passageways |
| 05/17/1990 | WO1990005009A1 Liquid filter |
| 05/17/1990 | DE3838720A1 Lubricant filter for liquid lubricants |
| 05/17/1990 | CA2003109A1 Automatic filter press |
| 05/17/1990 | CA2003108A1 Filter separator for separating a composite fluid |
| 05/16/1990 | EP0368076A2 Filtering apparatus for liquids, especially for beverages |
| 05/16/1990 | EP0367792A1 Two-stage batch filter apparatus and filtration process |
| 05/16/1990 | CN1042182A Cucumber mosaic virus coat protein gene |
| 05/15/1990 | US4925570 Method of filtering |
| 05/15/1990 | US4925550 Batch-action apparatus for filtering fluid medium |
| 05/14/1990 | CA2001192A1 High temperature filter |
| 05/10/1990 | DE3837331A1 Apparatus for separating off and pressing out solids from liquids under pressure |
| 05/09/1990 | EP0367037A2 Dehydration process of aqueous suspensions, and screw press therefor |
| 05/09/1990 | EP0366947A1 Filter for removing hydrophobic substances from electrodeposition paints |
| 05/09/1990 | EP0366903A2 Filter spray head with ring-shaped filter segments |
| 05/08/1990 | US4923680 Two polymer layers |
| 05/08/1990 | US4923603 Combined oil filter and cooler |
| 05/08/1990 | US4923601 Filter system having multiple filter elements and backflushing assemblies |
| 05/08/1990 | US4923600 Water clarification system adapted for removing particulate matter of greater than a predetermined size |
| 05/08/1990 | US4923068 Automatic filter system |
| 05/08/1990 | CA2002553A1 Filtering apparatus for filtering liquids, in particular beverages |
| 05/03/1990 | WO1990004675A1 Screen and method of manufacture |
| 05/03/1990 | WO1990004467A1 Drilling mud separation system |
| 05/03/1990 | WO1990004445A1 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 |
| 05/03/1990 | DE3836530A1 Method for operating a filter |
| 05/02/1990 | CN1041706A Microfilter device |
| 05/01/1990 | US4921615 Bacteria, fungi, biological cells, filter with different layers |
| 05/01/1990 | US4921607 Filter assembly for molten polymeric material |
| 05/01/1990 | US4921606 Seamless filter bags with a removable, refusable ring |
| 05/01/1990 | US4921600 Filter cartridge for swimming pools and spas |
| 05/01/1990 | US4921599 Double-rack grating for use in wastewater |
| 04/26/1990 | DE3830780A1 Filter apparatus for separating off solids from liquids |
| 04/25/1990 | EP0364545A1 Process and installation for recovering oils and fats from natural products |
| 04/25/1990 | EP0364498A1 Filter units for biological sample preparation. |
| 04/25/1990 | CN1041537A Backwash filter |
| 04/24/1990 | US4919806 Cross-flow type filter system |
| 04/24/1990 | US4919805 Vertical leaf filter flush |
| 04/24/1990 | US4919802 Blood filter |
| 04/24/1990 | US4919801 Control system for pump cycling |
| 04/24/1990 | US4918807 Screen and method of manufacture |
| 04/24/1990 | CA1268141A1 High consistency pressure screen and method of separating accepts and rejects |
| 04/19/1990 | WO1990003833A1 Continuous backwashing filter apparatus |
| 04/19/1990 | WO1990003831A1 Cross-flow filtration device and method of making |
| 04/19/1990 | DE3835326A1 Apparatus for separating off and collecting solids from a liquid stream |
| 04/19/1990 | DE3834982A1 Apparatus for separating off and pressing out solids from liquids |
| 04/18/1990 | EP0364299A2 Filtering system |
| 04/18/1990 | EP0364173A1 Microfilter device |
| 04/18/1990 | EP0363369A1 Self-operated drum filter and method for the filtration of water. |
| 04/18/1990 | CN2056088U Two-way precision filter |
| 04/17/1990 | US4918426 Method and apparatus for sensing fluid flow volume to indicate end of filter life |
| 04/17/1990 | US4918017 Screen assembly for screening elastomeric material |
| 04/17/1990 | US4917796 Lift with automated dump |
| 04/12/1990 | DE3833807A1 Apparatus for separating off cleaning bodies and solids from liquids |
| 04/11/1990 | EP0362739A2 Filtering device |
| 04/11/1990 | CN2055737U Horizontal type vertical blade diatormacceous earth filtering machine |
| 04/10/1990 | US4915852 Oil filter assembly for a Volkswagen flat four opposed cylinder air cooled engine |
| 04/10/1990 | US4915835 Flushable fiber-filter element for filtering a fluid |
| 04/10/1990 | US4915822 Method and apparatus for treating fiber suspension |
| 04/10/1990 | CA2000055A1 Microfilter device |
| 04/05/1990 | WO1990003212A1 Apparatus for filtering and coalescing liquids |
| 04/04/1990 | EP0361217A1 Brack-wash filter |
| 04/04/1990 | EP0360834A1 Method of and arrangement for purifying contaminated water |
| 04/03/1990 | US4914514 Method and apparatus for gauging well screens |
| 04/03/1990 | US4913815 Concentric dual bag filter apparatus with contained media |
| 03/28/1990 | EP0360601A1 Apparatus for filtering and coalescing liquids |
| 03/28/1990 | EP0360580A2 Fluid handling device with filter and fabrication process therefor |
| 03/28/1990 | EP0360273A2 Filtration method and filter press for employing the method |
| 03/28/1990 | EP0359878A1 Filter screen assembly |
| 03/28/1990 | EP0260267B1 Method and arrangement for the manufacture of filters |
| 03/28/1990 | EP0243346B1 Filter |
| 03/28/1990 | CN2055062U Purification device for filtering bacterial |
| 03/27/1990 | US4911847 Process for controlling the permeate composition in a rotary filtration device |
| 03/27/1990 | US4911842 Elongated perforated hollow core; endless loop of filter web |
| 03/27/1990 | US4911834 Drilling mud separation system |
| 03/27/1990 | US4911828 Rejects sorting apparatus |
| 03/27/1990 | CA1267019A1 Method for forming filter element and forming apparatus therefor |
| 03/27/1990 | CA1267018A1 Method of making a seamless dish-shaped diaphragm from sheet material |
| 03/22/1990 | WO1990002628A1 Method and device for making filters by laser machining |
| 03/22/1990 | WO1990002596A1 Improved lift with automated dump |
| 03/22/1990 | WO1990002594A1 Filter assembly |
| 03/22/1990 | DE3920098A1 Filtration of underground water - involves filter pipe made from stack of rings of rhomboid cross=section |
| 03/22/1990 | DE3917520A1 Doped segmental filter in cooling water flow line - is secured by reversed water flow collected in oscillated suction unit |