| 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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| 02/07/1978 | US4071937 Filter cartridge with folded filter sheath |
| 01/31/1978 | US4071451 Purification and recycling coolant liquids used in metal working |
| 01/31/1978 | US4071394 Apparatus for manufacturing non-woven fabric tubular filter |
| 01/31/1978 | US4071193 Method of and apparatus for flow spreading |
| 01/24/1978 | US4070293 Filter media |
| 01/24/1978 | US4070288 Disc filter having means for sensing the thickness of filter cakes and method of filtering with the filter |
| 01/24/1978 | US4070138 Screen changer apparatus |
| 01/17/1978 | US4068713 Plastic well screen |
| 01/10/1978 | US4067812 Filter construction |
| 01/10/1978 | US4067800 For fibers in liquid suspensions |
| 01/03/1978 | US4066546 Continuous filtering process and an apparatus therefor |
| 12/27/1977 | US4065390 Plate type filter apparatus |
| 12/27/1977 | US4065341 Method of making a liquid filter |
| 12/27/1977 | US4064938 Well screen with erosion protection walls |
| 12/20/1977 | US4064053 Strainer improvement |
| 12/20/1977 | US4064049 Water cleaner |
| 12/20/1977 | US4064046 Self-cleaning filter apparatus |
| 12/20/1977 | US4064045 Filter cake removal method and apparatus |
| 12/13/1977 | US4062781 Disposable filter with interchangeable end elements |
| 12/13/1977 | US4062780 Vacuum filter with indexable filter web |
| 12/13/1977 | US4062773 High surface to volume structure and method of generating same |
| 12/06/1977 | US4061576 Inline oil filter assembly |
| 12/06/1977 | US4061575 Filtration apparatus |
| 12/06/1977 | US4061571 Marine water inlet device |
| 11/29/1977 | US4060483 Method and apparatus for effecting the cleaning of a fluid filter |
| 11/22/1977 | US4059528 Cartridge filter |
| 11/22/1977 | US4059525 Slide filters |
| 11/22/1977 | US4059519 Pump basket strainer and assembly |
| 11/22/1977 | US4059518 Filter with axially shiftable rotating backwash selector |
| 11/15/1977 | US4058465 Filter for fish pond |
| 11/15/1977 | US4058463 Element for filtering and separating fluid mixtures |
| 11/15/1977 | US4058456 External supported filter |
| 11/08/1977 | US4057501 Filter apparatus and filter element therefor |
| 11/08/1977 | US4057496 Method and device for filtration |
| 11/08/1977 | US4056876 Method of making a filter |
| 11/01/1977 | US4056474 Self cleaning |
| 10/25/1977 | US4055500 Filtering apparatus and quick-opening backwash valve therefor |
| 10/18/1977 | USRE29447 Self-sealing filter tube |
| 10/18/1977 | US4054528 Self-cleaning strainer or filter |
| 10/18/1977 | US4054521 Indexing mechanism |
| 10/11/1977 | US4053410 Filter assembly with modulating bypass valve |
| 10/04/1977 | US4052319 Cooking oil filtration |
| 10/04/1977 | US4052318 Mesh coffee filter |
| 10/04/1977 | US4052317 Filtering equipment |
| 10/04/1977 | US4052315 One-piece molded filter |
| 10/04/1977 | US4052305 Method and apparatus for clarifying liquids by straining |
| 10/04/1977 | US4052163 Plastic vacuum suction funnel |
| 09/27/1977 | US4051042 Fluid flow filtering arrangement |
| 09/27/1977 | US4051033 Filter device |
| 09/20/1977 | US4049406 Fluid filter housing and assembly |
| 09/13/1977 | US4048075 Filter cartridge |
| 09/13/1977 | US4048074 Apparatus for separating solids from liquids or gas |
| 09/13/1977 | US4048071 Liquid filtering device |
| 09/13/1977 | US4048067 Filtering process and apparatus |
| 09/06/1977 | US4046697 Pleated paper filter |
| 09/06/1977 | US4046696 Extracorporeal circuit blood filter |
| 09/06/1977 | US4046692 Domestic water control unit |
| 08/30/1977 | US4045345 Self-flushing filter |
| 08/23/1977 | US4043919 Pressure screen with turbulence chamber means |
| 08/23/1977 | US4043918 Self cleaning filter assembly with fluttering inner filter member |
| 08/23/1977 | US4043917 Liquid filter apparatus |
| 08/23/1977 | US4043916 On-line closed-vessel circulating filter for edible cooking oils |
| 08/23/1977 | US4043915 Filter for use with irrigation systems |
| 08/16/1977 | US4042508 Filter holding means |
| 08/16/1977 | US4042506 Apparatus for removing solid material from sewage or other liquid |
| 08/16/1977 | US4042504 Self cleanable filters |
| 08/16/1977 | US4042503 Classifier and process for recycled fiber separation |
| 08/16/1977 | US4041560 Method and device for dewatering of suspensions in movement |
| 08/09/1977 | US4040933 Filter assembly for electrochemical machining apparatus |
| 08/09/1977 | US4040901 Mounting for sectional screen |
| 08/02/1977 | US4039452 Spring pressure |
| 08/02/1977 | US4039448 Filter with an open-cell elastomeric foam |
| 07/26/1977 | US4038194 Blood filter unit |
| 07/26/1977 | US4038189 Fluid dual filter |
| 07/19/1977 | US4036759 Apparatus and system for stabilizing the disc elements of a rotary concentrator for solids-containing fluids |
| 07/19/1977 | US4036758 In-line |
| 07/19/1977 | US4036755 Filter for cleaning lubricating oil in internal combustion engines |
| 07/05/1977 | US4033881 Multilayer paper sheet filter cartridges |
| 07/05/1977 | US4033880 Filter device |
| 07/05/1977 | US4033873 Filtration apparatus and pressure seal |
| 06/28/1977 | US4032688 Seamless tubular nonwoven webs and filters thereof |
| 06/28/1977 | US4032457 Plural stage filter cartridge wherein at least one stage comprises pulverized particulate material |
| 06/28/1977 | US4032455 Traps for sinks, laundry tubs and the like |
| 06/28/1977 | US4032443 Removal of grease and oil from particulate bed granules by backwashing with a detergent |
| 06/14/1977 | US4029579 Of a fiber and liquid |
| 06/07/1977 | US4028248 Fluid filter |
| 05/31/1977 | US4026806 Filter including fluid-flow control |
| 05/24/1977 | US4025438 Water filter device |
| 05/24/1977 | US4025435 Paint filtering apparatus |
| 05/24/1977 | US4025434 Screen changer with pre-fill screen blocks |
| 05/24/1977 | US4025431 Filter |
| 05/17/1977 | US4024065 Filter for liquid material |
| 05/17/1977 | US4024064 Aquariums |
| 05/17/1977 | US4024062 Strainer device |
| 05/10/1977 | US4022695 Removable filter cloth for a leaf filter of a pressure vessel |
| 05/10/1977 | US4022693 Liquid filter having multiple filtering elements |
| 05/10/1977 | US4022691 Mixing chamber for thickening sewage sludge by means of a flocculation agent combined with overflow drainage means |
| 05/03/1977 | US4021354 Pressure filter |
| 05/03/1977 | US4021350 Membrane filter system |
| 05/03/1977 | US4021347 Sewage treatment system |