Patents for B01D 35 - Filtering devices having features not specifically covered by groups , or for applications not specifically covered by groups; Auxiliary devices for filtration; Filter housing constructions (28,776) |
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09/29/1981 | US4292178 Filtering apparatus |
09/29/1981 | US4292174 Filter and cooling apparatus for dry-cleaning systems |
09/23/1981 | EP0036060A2 Screening floor |
09/22/1981 | US4290528 Magnetic separating apparatus with means for balancing magnetic forces |
09/21/1981 | EP0016806A4 Oil reconditioning filter. |
09/15/1981 | US4289583 Oil reclamation device |
09/08/1981 | US4288325 Water tap filter |
09/08/1981 | US4287917 Diaphragm device for damping vibrations in flowing liquids |
09/01/1981 | US4287055 Method of sorting fibre suspensions as well as a pressure sorter for performing the method |
09/01/1981 | US4286472 Flexible filter |
09/01/1981 | CA1108069A1 Fuel contamination monitor having a shut-off valve |
08/25/1981 | US4285805 Time-delay process and control system for electrostatic filter |
08/25/1981 | CA1107658A1 Gasket arrangement for purification apparatus |
08/19/1981 | EP0033807A2 Electrode assembly |
08/18/1981 | US4284500 For separating oversized particles from pressurized fluid slurry, cleaning of filter while system is sealed |
08/12/1981 | EP0033371A1 Filter arrangement |
08/11/1981 | US4283466 Taking place in a reaction chamber traversed by a suspension of particles separated into a concentrated fraction and a fluid fraction |
08/11/1981 | US4283278 Nondeforming; for separation |
08/04/1981 | US4282098 Housing cap |
07/28/1981 | US4280907 Separating device |
07/28/1981 | US4280906 Filter for separating solid contaminants from a fluid, especially solid contaminants in a reactor cooling water used in nuclear reactor plants |
07/22/1981 | EP0032317A2 A method of liquid filtration |
07/21/1981 | US4279748 High-field gradient magnetic separator |
07/21/1981 | US4279746 Hydraulic fluid filter and bypass valve |
07/14/1981 | CA1104945A1 Filter method and apparatus |
07/14/1981 | CA1104943A1 Transmission fluid filter and method for manufacture thereof |
07/08/1981 | EP0031346A1 Dry cleaning of pressure filters for liquids. |
07/07/1981 | US4277338 Filter assembly |
07/07/1981 | US4277337 Deposit filtering apparatus for filtering turbid liquids |
07/01/1981 | EP0031195A1 Fluid strainer or filter |
07/01/1981 | EP0031126A1 Filtration device for the bacterial sterilisation of a coolant in jaw surgery appliances |
06/30/1981 | US4276170 Vented flexible filtration device for use in administering parenteral liquids |
06/30/1981 | US4276167 Washer and/or thickener |
06/30/1981 | US4276163 Hydrostatic relief valve |
06/30/1981 | US4276162 Flame resistant sump assembly |
06/30/1981 | US4276161 Fuel filter provided with a water level detecting means |
06/30/1981 | EP0027447A4 Gas diffuser, aerator, or sparger apparatus and method. |
06/26/1981 | EP0023491A4 Filter thermal bypass valve. |
06/23/1981 | US4274961 Pressure filter |
06/23/1981 | US4274952 Apparatus for separating solids from a suspension |
06/23/1981 | CA1103753A1 Electrically grounded filter plate |
06/23/1981 | CA1103590A2 Conversion of animal waste |
06/16/1981 | US4273656 Filter for fluid passage |
06/16/1981 | US4273651 Return line filter |
06/16/1981 | US4273509 Self-powered cleaning unit for a fluid pump |
06/16/1981 | CA1103172A1 Cartridge filter |
06/16/1981 | CA1103105A1 Method of manufacturing supports for porous filters |
06/10/1981 | EP0030077A1 Slide filter apparatus for filtering contaminants from a fluid working material |
06/09/1981 | US4272371 Lubricating oil filter-refiner for internal combustion engines |
06/09/1981 | US4272368 Fluid filter and indicator |
06/09/1981 | CA1102658A1 Filter element shutoff valve |
06/09/1981 | CA1102583A1 Side stream monitoring |
06/03/1981 | EP0029493A1 Vessel protected against internal corrosion |
06/02/1981 | US4271020 Valve for filter device |
06/02/1981 | US4271015 Water treatment apparatus |
06/02/1981 | CA1102249A1 Fluid filter and method of making same |
05/26/1981 | US4269681 Dielectric porous filter bed of nondeformable particles; current flow from edges to center |
05/19/1981 | US4268391 Leak proof filter plate system for slide plate filters |
05/19/1981 | US4268384 Spin-off filter head assembly |
05/19/1981 | US4268382 Sieve and sieving apparatus for separating solids from a suspension |
05/15/1981 | EP0024427A4 Filtering scraper. |
05/14/1981 | WO1981001248A1 Process and apparatus for transferring and sterilizing a solution |
05/12/1981 | US4267053 Using hollow fibers to remove bacteria and fungi |
05/12/1981 | US4267046 Method and apparatus for dewatering of fine-grained materials |
05/05/1981 | US4265771 Alluvial filter candle apparatus and a method of cleaning the same |
05/05/1981 | US4265762 Filter assembly for use in the filtration of medical treatment liquids |
05/05/1981 | US4265761 Fluid filtering device |
05/05/1981 | US4265759 Device for separating a mixture |
05/05/1981 | US4265751 External biological aquarium filter |
05/05/1981 | CA1100595A1 Valve with indicator circuit |
05/05/1981 | CA1100416A1 Continuous oscillation of liquid separator |
04/30/1981 | WO1981001112A1 Apparatus for magnetic treatment of a flowing liquid |
04/29/1981 | EP0027447A1 Gas diffuser, aerator, or sparger apparatus and method |
04/28/1981 | US4264446 Strainer screen |
04/28/1981 | US4264443 Transmission fluid filter |
04/28/1981 | US4264437 Method and apparatus for pressure screening fibrous suspensions |
04/21/1981 | US4263140 In-line fluid filter |
04/16/1981 | WO1981001014A1 Device for preparation of dilution liquid for drilling muds |
04/14/1981 | US4261838 By-pass oil filtration system for internal combustion engines |
04/14/1981 | CA1099216A1 Method and apparatus for treating liquid-containing substance mixtures, particularly fibre suspensions |
04/08/1981 | EP0026261A1 Device for separating cleaning bodies from a fluid flowing out of a shell-and-tube heat exchanger |
04/07/1981 | US4260477 Magnetic separators |
04/07/1981 | US4260012 Locomotive engine coolant filter |
03/24/1981 | US4257888 Cartridge filter |
03/24/1981 | CA1098049A1 Filter unit |
03/24/1981 | CA1098047A1 Paint strainer |
03/24/1981 | CA1097990A1 Magnetic pressure indicator with thermal lockout |
03/18/1981 | EP0025314A2 Method of cleaning a filter press and filter press |
03/18/1981 | EP0025095A1 High gradient magnetic separating device |
03/18/1981 | EP0025030A1 Regeneration process of a filtering apparatus and device for implementing such process |
03/17/1981 | US4256583 Flush-back filter |
03/17/1981 | US4256581 Apparatus for preparing granular material by means of a strip caster |
03/17/1981 | US4256579 Filter for liquids |
03/17/1981 | US4256552 Chlorine generator |
03/17/1981 | US4256474 Filter housing and filter assemblies utilizing the same |
03/11/1981 | EP0024601A1 Microfiltration device for filtering blood coagels and microaggregates |
03/11/1981 | EP0024514A1 Filter arrangement for the filtration of liquids, especially lubricating oil |
03/11/1981 | EP0024427A1 Filtering scraper |
03/10/1981 | US4255269 Method and apparatus for adapting the composition of a drilling fluid for use in making a hole in the earth by rotary drilling |
03/10/1981 | US4254731 Filter restriction indicator |