| Patents for B01D 33 - Filters with filtering elements which move during the filtering operation (10,149) |
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| 10/02/1991 | EP0449572A2 A sludge dewatering system |
| 10/02/1991 | DE4000148A1 Appts. for decontaminating contaminated earth - by sepg. solids using high pressure water and air, washing solids with wash fluid floc-filtering obtd. colloidal dispersion, etc. |
| 10/01/1991 | US5053123 Adjustable valve for varying filtrate composition from filters |
| 09/25/1991 | EP0447618A2 Structure of vibro separator |
| 09/24/1991 | US5051195 Filters |
| 09/24/1991 | US5051167 Apparatus for screening a suspension of fibrous cellulose material |
| 09/18/1991 | EP0446688A1 Method and device for removing oil from watersurface |
| 09/18/1991 | EP0446226A1 Method and device for separation of particles |
| 09/17/1991 | US5049248 Liquid separation process for suspensions by a pulsating electrical current |
| 09/12/1991 | DE4006970A1 Inclined rotary sieves immersed in waste water flow - discharge separated solids into upwardly directed feed worm |
| 09/10/1991 | US5047123 Apparatus for clarifying liquids |
| 09/09/1991 | WO1991014048A1 Machine with mobile grid for the elimination from channels and similar of solid products transported by a liquid flow |
| 09/09/1991 | CA2055456A1 Machine with mobile grid for the elimination from channels and similar of solid products transported by a liquid flow |
| 09/07/1991 | WO1991013672A2 Apparatus for separating liquids and solids |
| 09/07/1991 | CA2077687A1 Apparatus for separating liquids and solids |
| 09/05/1991 | WO1991012872A1 Disc filter |
| 09/05/1991 | DE4106742A1 Combining similarly holed micrometer pored plastic - or metal filter elements when offset to produce microporous structure |
| 09/04/1991 | EP0444976A1 Pressing apparatus |
| 09/04/1991 | EP0305394B1 Arrangement for liquid treatment of pulp |
| 09/03/1991 | US5045181 Apparatus for removing ash from repulped wastepaper |
| 09/03/1991 | US5044179 Stabilizing pressure and flow conditions in a screening apparatus |
| 08/28/1991 | EP0443385A2 Process and device for separating solids from mud with screw presses |
| 08/28/1991 | EP0443077A1 Vibrating screen with variable performance |
| 08/22/1991 | WO1991012067A1 Rotating disc filter |
| 08/22/1991 | WO1991012065A1 Apparatus for filtering liquids |
| 08/22/1991 | CA2069883A1 Apparatus for filtering liquids |
| 08/21/1991 | EP0442697A2 Method and apparatus for removing liquid from thickeners, filters, washers and corresponding devices |
| 08/21/1991 | EP0175702B1 Improvement to vacuum rotary filters with horizontal filtration plane |
| 08/20/1991 | US5041223 Arrangement for an inlet pipe in a rotating drum sieve |
| 08/20/1991 | US5041222 Single endless screen for extracting liquid from a slurry |
| 08/17/1991 | WO1991012066A1 Apparatus for filtering liquids |
| 08/17/1991 | WO1991012064A1 Apparatus for filtering liquids |
| 08/17/1991 | WO1991012063A1 An apparatus for filtering suspensions and a method of operating the apparatus |
| 08/17/1991 | CA2069882A1 Apparatus for filtering liquids |
| 08/14/1991 | EP0440747A1 Drilling mud separation system |
| 08/14/1991 | EP0440692A1 Rotary screening device. |
| 08/14/1991 | EP0228461B1 Tilting pan filters and cam therefor |
| 08/14/1991 | CA2036096A1 Method and apparatus for removing liquid from thickeners, filters, washers and corresponding devices |
| 08/13/1991 | US5039407 Water reclamation and collection unit |
| 08/13/1991 | US5039347 Method for cleaning the filter plates of a suction drier |
| 08/07/1991 | EP0252161B1 Device for purification, particularly filtration, of a fluid or gaseous medium |
| 08/07/1991 | EP0250602B1 Device for filtration of a fluid or gaseous medium |
| 07/30/1991 | CA2035087A1 Method and apparatus for intermittent compression of a pulp sheet to aid removal from a filter |
| 07/24/1991 | EP0438092A1 An apparatus for thickening fibre suspension |
| 07/24/1991 | EP0437860A2 Gravity band filter |
| 07/18/1991 | CA2033920A1 Apparatus for thickening fibre suspension |
| 07/16/1991 | US5032270 Thickener |
| 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 | 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 | EP0436164A1 Liquid-solid separator, especially separator for manure |
| 07/09/1991 | US5030348 Arrangement for an inlet and outlet in a rotating drum sieve |
| 07/03/1991 | EP0435303A2 Vibratory sieve |
| 07/03/1991 | EP0435096A1 Liquid-solid separator, especially separator for manure |
| 07/03/1991 | EP0278952B1 Filter arrangement |
| 07/02/1991 | CA1285497C Tilting pan filters and cam therefor |
| 07/02/1991 | CA1285359C Filtration system |
| 06/27/1991 | DE3942484A1 Sorting machine with rotation-symmetrical sieve drum - which has several axial bearing points with counter-bearing member |
| 06/25/1991 | US5026487 Method and apparatus for intermittent compression of fibrous material to aid removal from a filter surface |
| 06/20/1991 | DE4039684A1 Cleaning travelling machining-coolant filter belt |
| 06/19/1991 | EP0432379A2 Bandfilter device for the purification of processing liquids |
| 06/19/1991 | EP0432276A1 Method of concentrating and dehydrating slurried sludge |
| 06/09/1991 | WO1991008819A1 Filter arrangement |
| 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. |
| 06/05/1991 | CN2078192U Revolving filtering net with mechanical cleaning dirty mechanism |
| 06/04/1991 | US5021166 Mixing conditioning agent with sludge, separating liquid, monitoring characteristic, maintaining optimium flow |
| 06/04/1991 | US5020178 Stabilizing pressure and flow conditions in a screening apparatus |
| 05/30/1991 | CA2031088A1 Process and apparatus for the separation of solids from fluids or sediments from emulsions |
| 05/29/1991 | EP0428711A1 Method and apparatus for clarifying liquids |
| 05/28/1991 | US5019258 Horizontal belt vacuum filtration apparatus |
| 05/22/1991 | EP0428004A1 Centrifugal washer for paper pulp |
| 05/22/1991 | CN1051517A Device for separating fluid from mixture of solid matter and fluid |
| 05/15/1991 | EP0426794A1 Filter cell. |
| 05/13/1991 | CA2005848A1 Centrifugal washer for paper pulp |
| 05/08/1991 | EP0425757A1 Device for removal of water from sludge |
| 05/07/1991 | US5013460 Perforated cylinder |
| 05/07/1991 | US5013430 Sewage treatment |
| 05/02/1991 | EP0424486A1 Filter for continuous filtration |
| 04/30/1991 | US5011065 Screen basket and method of manufacture |
| 04/17/1991 | EP0422715A1 Device for separating fluid from a mixture of solid matter and fluid |
| 04/17/1991 | EP0422394A2 Strainer press |
| 04/16/1991 | US5008010 Rotating cylindrical screen with fine mesh modular panels |
| 04/10/1991 | EP0421078A1 Supply device for separating machine |
| 04/10/1991 | CN2074668U Continous heavy oil filter |
| 04/10/1991 | CA2026721A1 Device for separating fluid from a mixture of solid matter and fluid |
| 04/04/1991 | WO1991004090A1 Filter sector |
| 04/04/1991 | DE3932229A1 Filter for removal of debris in coolant loops in power stations - has filter built as turbine runner to simplify back flow cleaner operation to allow larger surface areas |
| 04/03/1991 | EP0420372A1 Extended nip press belt |
| 04/03/1991 | EP0420310A1 A method and a device for extracting particulate matter from waste material |
| 04/03/1991 | EP0419590A1 An apparatus for dewatering and squeezing material |
| 04/02/1991 | US5004540 Invertible filter-type centrifuge with improved bearing and seal assembly |
| 04/02/1991 | CA1282226C Apparatus or device for the treatment of a material made to pass between at least two endless permeable belts, for instance screen belts, or the like conveying means |
| 03/21/1991 | WO1991003309A1 Apparatus and method for removal of liquids |
| 03/20/1991 | EP0417401A2 Method and device for the disposal of a used filtering band |
| 03/20/1991 | EP0417183A1 A method and a device for the separation of bodies from a liquid. |
| 03/19/1991 | US5000850 Vacuum filtration and compression of filter cakes of clay |
| 03/13/1991 | EP0417030A1 An apparatus for removing ash from repulped wastepaper |
| 03/12/1991 | US4999104 Disk-type decker |
| 03/07/1991 | WO1990014693A3 Process for the production of battery paste |
| 03/06/1991 | EP0415686A2 Sealing member for a filter press |