| 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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| 08/06/1991 | CA1287327C Pressure type slit screen |
| 08/01/1991 | DE4002507A1 Assembly for removal of fine water-borne particles - from outlet pipe |
| 08/01/1991 | DE4002290A1 Reverse flow domestic tap filter flushing water - applied by inbuilt jet at increased pressing to limited filter surface |
| 07/31/1991 | EP0439352A2 Method for producing a filter element |
| 07/31/1991 | EP0438595A1 Jig and device for filtration |
| 07/31/1991 | EP0252996B1 Device for filtration of liquid |
| 07/31/1991 | EP0177521B1 Filter element for separating solid material particles from gas or liquid media |
| 07/31/1991 | CA2034078A1 Serial crossflow filtration assembly |
| 07/30/1991 | US5035811 Filter pump system |
| 07/30/1991 | US5035800 Flexible strainer with a releasable cord |
| 07/30/1991 | US5035799 Filter assembly |
| 07/26/1991 | CA2034502A1 Viscous fluid pressure-feed apparatus |
| 07/25/1991 | WO1991010493A1 Multi-function filter cartridge with flow distribution control |
| 07/25/1991 | DE4015443A1 Continuously operating filter for varnish - in which filters are changed over automatically |
| 07/23/1991 | US5034128 Apparatus for dewatering pulp |
| 07/23/1991 | US5034127 Filter assembly for purifying brine |
| 07/23/1991 | US5034123 Filtering apparatus for processing liquids |
| 07/23/1991 | US5034122 Self cleaning static bar grid |
| 07/23/1991 | US5034120 Method for keeping a screen or filter surface clear |
| 07/23/1991 | US5033319 Filtering and sensing assembly and system |
| 07/17/1991 | EP0437311A1 Solids removal device |
| 07/17/1991 | EP0436888A2 Rotor for pressure screens for screening fibre suspensions |
| 07/16/1991 | US5032293 Basket filter assembly with inclined nozzle |
| 07/16/1991 | US5032287 Septic tank effluent processing vaporizer |
| 07/16/1991 | US5032267 Apparatus for filtering a heat-softened stream of plastic material |
| 07/16/1991 | US5032263 Bar screen and rake apparatus |
| 07/16/1991 | US5032261 Compact biofilter for drinking water treatment |
| 07/11/1991 | WO1991009661A1 Method and device for carrying off the filter cake from a filter apparatus |
| 07/11/1991 | WO1991009660A1 Multistage filtration apparatus |
| 07/11/1991 | DE4042167A1 Device for removing undesirable material from water in sewage works - including inclined screw conveyor with internal ribs on screw housing and spray nozzles for washing material |
| 07/11/1991 | DE4007893A1 Device for cleaning process water, esp. cooling water, using screen - comprises fixed inlet screen kept clean by suction head which traverses its upstream surface under effect of linear or rotational drives |
| 07/11/1991 | DE4000149A1 Flocculation-filtration procedure - by sepg. suspensions of fine particles by mechanically mixing with flocculant in flake or honeycomb form and using filter-press |
| 07/10/1991 | EP0436423A1 Synthesis process for Ziegler type solid catalysts or for solid compositions of such catalytic solids, using a unique pivotable polyfunctional reactor and a magnetically driven agitator, usable among others, in such a reactor |
| 07/09/1991 | US5030482 Filter gasketing |
| 07/09/1991 | US5030350 Filter medium for cake-forming filtration processes |
| 07/09/1991 | US5030349 Filter apparatus |
| 07/09/1991 | US5030347 Multiple filter elements with movable flushing assembly |
| 07/09/1991 | CA1285891C Straining and stop valve |
| 07/07/1991 | CA2033577A1 Rotor for pressure sorters for sorting fibrous suspensions |
| 07/04/1991 | DE3943416A1 De-watering very dilute materials e.g. liquid manure etc. - by agglomeration and sedimentation while liq. flows in thin layer over suitable surface and is then filtered using porous rubber membrane |
| 07/03/1991 | WO1991010008A1 Improved efficiency screen plate for screening pulp |
| 07/03/1991 | EP0435097A1 A filter with a self-cleaning net |
| 07/03/1991 | CN2079992U Counter-blow type filter |
| 07/03/1991 | CN1013027B Water purification apparatus |
| 07/03/1991 | CN1013025B Method of making filter body formed of cellulose-spanbond nonwoven cloth |
| 07/03/1991 | CN1013024B System for removing liquid from slurry consisting of liquid and powder material |
| 07/02/1991 | US5028331 Filter cartridge |
| 07/02/1991 | US5028330 Filter & process for manufacturing filters using material cured by ultraviolet radiation for end caps |
| 07/02/1991 | US5028327 Filter element |
| 07/02/1991 | US5028324 Stretching mechanism for a screen |
| 07/02/1991 | US5028323 Filter for corrosive liquids |
| 07/02/1991 | US5028322 Low profile underdrain strainer assembly with improved distribution/fastening means |
| 07/02/1991 | US5028036 Filter for molten ferrous metal |
| 07/02/1991 | US5028008 Small-sized fluid treatment element |
| 07/02/1991 | US5027620 Diffuser with flexible bellows and internal actuator |
| 07/02/1991 | CA1285498C Pressure segregation equipment |
| 06/28/1991 | WO1991010009A1 Improved wear screen plate and method of manufacture thereof |
| 06/27/1991 | WO1991008818A1 Apparatus for filtration of liquid |
| 06/27/1991 | DE3942591A1 Fibre suspension sorting sieve body - has carrier rings with grooves to hold the sieve rods for strength with simple assembly |
| 06/27/1991 | DE3942455A1 Quick fluid filter - has multiple discs in gps. compressed with terminal and intermediate lamps |
| 06/26/1991 | EP0433664A1 Liquid filter |
| 06/26/1991 | EP0433587A2 Screen changer apparatus with cylindrical screens |
| 06/26/1991 | EP0433582A1 Preparation of ceramic honeycomb structure having selectively sealed channels |
| 06/25/1991 | CA1285120C Apparatus and process for separating solid particles from a liquid suspension and/or for the purification or leaching of solid particles |
| 06/23/1991 | CA2032995A1 Synthesis process for ziegler catalytic solids or solid components from such catalytic solids carried out inside of a multi purpose pivoting reactor, and entraining stirring rod usable in such a reactor, among other |
| 06/20/1991 | DE3941673A1 Device for removing large impurities from waste water - contg. screw conveyor modified to act as filter and convey impurities unable to pass through filter to sediment disposal |
| 06/19/1991 | EP0432959A2 Bar screening apparatus with improved rake |
| 06/19/1991 | EP0432958A1 A method of making a seamless screen cylinder |
| 06/19/1991 | EP0432906A1 Filter |
| 06/18/1991 | US5024870 Method for potting pleated filter media and filters made thereby |
| 06/18/1991 | US5024771 Liquid filter and methods of filtration and cleaning of filter |
| 06/18/1991 | US5024763 Filtering apparatus |
| 06/18/1991 | US5024757 Apparatus for removing ice from a chopped or cut hole |
| 06/15/1991 | CA2031794A1 Bar screening apparatus with improved rake |
| 06/13/1991 | WO1991008035A1 Device for dehydrating sludges |
| 06/13/1991 | DE3940299A1 Forming ribbed internal combustion engine oil filter insert - integral plastic moulding with axial stand-pipe |
| 06/11/1991 | US5022995 Compressive dewatering in vacuum; radioactive materials |
| 06/11/1991 | US5022986 Manifold and disposable filter assembly |
| 06/11/1991 | US5022147 Method of assembling a suction strainer |
| 06/08/1991 | CA2004970A1 Dewatering and compacting equipment |
| 06/08/1991 | CA2004929A1 E-z filter blaster |
| 06/05/1991 | EP0429805A2 Method and device for making pleated filter inserts |
| 06/05/1991 | EP0429747A2 Process and device for the separation of solids from liquids and the separation of emulsions from sedimented solids |
| 06/05/1991 | EP0429551A1 Continuous backwashing filter apparatus. |
| 06/04/1991 | US5021204 Method for selectively charging honeycomb structures |
| 06/04/1991 | US5021157 Filtration, drainage, and drying apparatus for deliquification of sludges |
| 06/04/1991 | US5020610 Removable filter fluid flow shutoff apparatus |
| 05/30/1991 | CA2031088A1 Process and apparatus for the separation of solids from fluids or sediments from emulsions |
| 05/29/1991 | EP0429409A1 Self-cleaning filter for hydraulic systems fitted with an hydraulic turbine which operates a number of cleaning brushes |
| 05/29/1991 | EP0428711A1 Method and apparatus for clarifying liquids |
| 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 | CA2030667A1 Process and apparatus for manufacturing a pleated filter insert |
| 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 | DE3934947A1 Maintaining filtrate pressure during reversed flow flushing - by simultaneous transfer of gradually accumulated filtrate |
| 05/22/1991 | EP0396684A4 Cross-flow filtration device and method of making |
| 05/21/1991 | US5017287 Dual cup-shaped supporting filter body |
| 05/21/1991 | US5017285 Fuel filter and cartridge assembly |
| 05/21/1991 | US5017241 Cleaning filters |
| 05/16/1991 | DE4018310C1 Filtering plastic melts - includes using an arrangement which incorporates melt channel in housing and rotatable sieve plate inside sieve chamber |