| Patents for B01D 36 - Filter circuits or combinations of filters with other separating devices (7,816) |
|---|
| 12/22/1990 | CA2019706A1 Filter and apparatus using filter |
| 12/19/1990 | EP0344152B1 Process and installation for dewatering waste water sludge |
| 12/13/1990 | WO1990015025A1 Electrolytic water purification |
| 12/13/1990 | DE3918527A1 Device for disposal of sewage sludge - comprises rotating drum dryer and filter band press used instead of centrifuge to improve throughput of sludge drying system |
| 12/12/1990 | CN1047662A Method of variable constant water-cycle purification |
| 12/11/1990 | US4976876 Point-of-use membrane filtration system |
| 12/11/1990 | US4976854 Oil filter II |
| 12/11/1990 | US4976852 Fuel filter |
| 12/10/1990 | WO1990014872A1 Method and apparatus for clarifying liquids |
| 12/10/1990 | CA2034006A1 Method and apparatus for clarifying liquids |
| 12/05/1990 | EP0400223A1 Filter for diesel fuel, provided with self-adjusting heating means |
| 12/04/1990 | US4975206 Connecting drains to a prefilter connected to a second filter connected to vat inlets for circulation |
| 12/04/1990 | US4975182 Waterflow differential electrical charging process for ores |
| 11/28/1990 | CN1047215A Coal powder filter |
| 11/22/1990 | EP0398437A1 Device, suitable for the continuous recovery of a product in suspension, as well as a process for the continuous recovery of a product in suspension with the aid of the said device |
| 11/20/1990 | US4971704 In internal combustion engines |
| 11/13/1990 | US4969996 Water purification device with an intake funnel |
| 11/13/1990 | CA1276115C Store and a method for de-watering slurry |
| 11/08/1990 | DE4007492A1 Pressure filter |
| 11/07/1990 | EP0396079A2 Apparatus for dewatering sludges and similar substances |
| 11/01/1990 | WO1990012635A1 Attachment for a separator |
| 10/31/1990 | EP0394585A2 Oil filter |
| 10/31/1990 | EP0394251A1 Filtration unit with pressure compensation |
| 10/31/1990 | DE4012972A1 Cross-flow filter for beverage - maintains raised pressure to prevent loss of carbon di:oxide content |
| 10/30/1990 | US4966698 Filter system and scrubber |
| 10/30/1990 | US4966692 Filtration system having flow control means and tank adapter with selective venting |
| 10/25/1990 | DE4012104A1 Separator system for machinery coolant-lubricants has alarm system - indicating excessive pressure difference across filter and need for cleaning |
| 10/24/1990 | EP0393277A2 Filter assembly |
| 10/23/1990 | US4964984 Blood filter |
| 10/23/1990 | US4964983 Reservoir |
| 10/17/1990 | EP0392340A2 Press filter |
| 10/10/1990 | EP0391648A2 Filter cartridge with end densification ring |
| 10/10/1990 | CN1045926A Pool for purifying water |
| 10/08/1990 | WO1990011809A1 A process and apparatus for continuous filtering and liquid displacement of a liquid suspension of a fibrous or finely-divided material |
| 09/25/1990 | US4959141 Fuel filter with positive water shutoff |
| 09/20/1990 | WO1990010490A1 Filter for continuous filtration |
| 09/20/1990 | DE3908216A1 Apparatus for cleaning sewers |
| 09/19/1990 | EP0387828A2 Apparatus for removal of contaminants |
| 09/18/1990 | US4957624 Method of and arrangement for purifying contaminated water |
| 09/14/1990 | WO1990010489A1 Filter for continuous filtration |
| 09/14/1990 | CA2027566A1 Filter for continuous filtration |
| 09/11/1990 | US4955482 Screen cleaning in cil & cip systems |
| 09/04/1990 | US4954222 Dry cleaning solvent filtration and recovery system with filter rinsing apparatus |
| 08/29/1990 | EP0383788A1 Method and apparatus for filtering contaminants. |
| 08/22/1990 | EP0382726A1 Process and device for dredging silt in ports, waterways and the like. |
| 08/16/1990 | EP0381925A2 Self-venting drain valve assembly |
| 08/07/1990 | US4946600 Water repurification method of city water and its equipment |
| 07/26/1990 | WO1990007974A1 Filter apparatus |
| 07/25/1990 | WO1990008645A1 An apparatus for dewatering and squeezing material |
| 07/25/1990 | CA2025769A1 Apparatus for dewatering and squeezing material |
| 07/12/1990 | WO1990007666A1 Self-venting drain valve assembly |
| 07/04/1990 | EP0376443A2 Oil filter |
| 07/04/1990 | EP0375739A1 Water clarification system adapted for removing particulate matter of greater than a predetermined size. |
| 06/26/1990 | CA1270770A1 Liquid filtering system |
| 06/19/1990 | US4935151 Continuous filtration and backflushing of successive filter segments, recycling; defect reduction |
| 06/19/1990 | US4935137 Filter apparatus for a liquid mixture |
| 06/14/1990 | WO1990003104A3 Method and plant for treating organically charged sewage |
| 06/12/1990 | US4933093 Fuel filter |
| 06/07/1990 | DE3844658A1 Apparatus for filtering liquids |
| 06/05/1990 | US4931176 Installation for the separation of the constituents of a suspension |
| 06/05/1990 | US4931175 Water clarifying apparatus |
| 05/31/1990 | WO1990005576A1 Separating filter for separating a pulp |
| 05/31/1990 | WO1990005571A1 Dry cleaning solvent filtration and recovery system |
| 05/30/1990 | EP0370118A1 Filterapparatus for the purification of a liquid |
| 05/17/1990 | WO1990005012A1 Filter for removing hydrophobic substances from electrophoretic enamel coatings |
| 05/17/1990 | CA2003108A1 Filter separator for separating a composite fluid |
| 05/09/1990 | EP0366947A1 Filter for removing hydrophobic substances from electrodeposition paints |
| 05/09/1990 | CN1041888A Waterflow differential electrical charging process for ores |
| 05/08/1990 | US4923609 Method and apparatus for purifying liquids employing a particulate filter and a membrane |
| 05/08/1990 | US4923600 Water clarification system adapted for removing particulate matter of greater than a predetermined size |
| 05/02/1990 | EP0366429A2 Improvements in apparatus and process to separate and remove extraneous matter from a liquid stream |
| 04/25/1990 | CN2056360U Multi-function filter |
| 04/24/1990 | CA2001216A1 Apparatus and process to separate and remove extraneous matter from a liquid stream |
| 04/19/1990 | WO1990003846A1 Waterflow differential electrical charging process for ores |
| 04/19/1990 | DE3834982A1 Apparatus for separating off and pressing out solids from liquids |
| 04/17/1990 | US4917795 Automatic valve assembly |
| 04/17/1990 | CA1267770A1 Process and apparatus for the purification of contaminated sulfur |
| 04/10/1990 | US4915597 Filter pump head assembly improvements |
| 04/05/1990 | WO1990003104A2 Method and plant for treating organically charged sewage |
| 04/04/1990 | EP0360834A1 Method of and arrangement for purifying contaminated water |
| 03/28/1990 | CN1040751A Apparatus for preparing machining liquid of electroerosion machine |
| 03/20/1990 | US4909950 Circulating through a ceramic filter |
| 03/20/1990 | US4909937 Tubular filter enclosed in housing |
| 03/15/1990 | DE3830688A1 Pressure filter |
| 03/07/1990 | EP0356832A2 Fuel filter |
| 03/07/1990 | EP0356605A1 Metal precipitation and neutralisation apparatus for metal pickles containing several metals |
| 03/06/1990 | US4906369 Apparatus for dewatering sludge and similar substances |
| 03/06/1990 | US4905644 In a fluid feed system |
| 02/28/1990 | EP0355633A1 Device for the treatment of the machining liquid of an electroerosion machine |
| 02/28/1990 | CN2053625U Multifunction water purifying device |
| 02/20/1990 | US4901754 Valve improvements |
| 02/20/1990 | CA1266008A1 Semipermeable baffle fuel filter |
| 02/13/1990 | US4900440 Dynamic pressure filter |
| 02/13/1990 | US4900434 Apparatus for continuous filtration of fluids |
| 02/13/1990 | US4900430 Screen cleaning in CIL and CIP systems |
| 02/07/1990 | EP0353314A1 Process and installation for the purification of waste water containing emulsified fat, and discharging device |
| 02/06/1990 | US4898667 Point-of-use membrane filtration system |
| 01/31/1990 | CN1039189A Separation-type water clarifier |
| 01/30/1990 | US4897188 Filtering device |
| 01/30/1990 | CA1265267A1 Fluid clarifying assembly |