Patents
Patents for B01D 39 - Filtering material for liquid or gaseous fluids (24,884)
02/1979
02/06/1979CA1047717A1 Method for the production of porous carbon sheet
01/1979
01/23/1979US4136221 Suede-like raised woven fabric and process for the preparation thereof
01/23/1979US4135894 Air filtration apparatus and method of operation thereof
01/16/1979CA1046451A1 Chromatography solid support
01/16/1979CA1046433A1 Porous polytetrafluoroethylene tubings and process of producing them
01/16/1979CA1046432A1 Packing and separator medium
01/09/1979US4133657 Apparatus for purification of gasses
01/02/1979US4132650 Fused fiber blood filter
01/02/1979CA1045565A1 Filter tube and method of making same
12/1978
12/26/1978CA1045050A1 Multilayer paper sheet filter cartridges
12/26/1978CA1044927A1 Method of making filtering metal material
12/19/1978US4130487 Filters for liquids or gases
12/19/1978CA1044615A1 Low pressure drop filter medium
12/19/1978CA1044537A1 Filter medium and process
12/12/1978US4129430 Filter assembly
12/12/1978CA1044156A1 Filter of bed of 50-1000 micron, impermeable carbon-coated particles
11/1978
11/28/1978US4127696 Multi-core composite filaments and process for producing same
11/28/1978CA1043137A1 Helically seamed tubing with apparatus and method for making same
11/21/1978US4126560 For removing contaminants from molten polymers
11/21/1978US4126499 Method of manufacture of a rigid, perforated cloth
11/21/1978CA1042816A1 Fibrous blood filter
11/07/1978US4124360 Coalescing demister
10/1978
10/24/1978US4122136 Terpolymer with styrene and vinyl acetate
10/24/1978US4122015 Wire nets, fusion
10/24/1978US4122011 Packing
10/24/1978US4122008 Filtration process for separating particles from liquid coolants in lens grinding devices
10/24/1978CA1041021A1 Media for filtering blood
10/24/1978CA1040938A1 Method of processing porous metal filters
10/19/1978WO1978000001A1 Low temperature synthesis of vitreous bodies and their intermediates
10/17/1978US4120671 Liquid flow from the core out, draining
10/10/1978US4119543 Oil filter, cellulsoe web impregnated with a resin
10/03/1978US4118531 Web of blended microfibers and crimped bulking fibers
10/03/1978US4117578 Poly(m-phenylene isophthalamide)
09/1978
09/26/1978US4116738 Continuous production of tubular modular filter elements using nonwoven webs from thermoplastic fibers and products
09/19/1978US4114794 Method of autogenously bonding filter assemblies
09/19/1978CA1038778A1 Demister assembly for removing liquids from gases
09/19/1978CA1038571A1 Attenuating melt-extruded filaments with converging non-symmetrical gas streams
09/12/1978US4113535 High temperature filter fabrics
09/12/1978CA1038135A1 Shaped and fired fibers of tio2
09/05/1978US4112159 Continuous production of tubular modular filter elements using nonwoven webs from thermoplastic fibers and products
09/05/1978US4112037 Thermoplastic
09/05/1978US4111815 Filter elements for gas or liquid and methods of making such elements
08/1978
08/22/1978CA1036843A1 Particulate metal filter-medium for polymer melts
08/08/1978US4105561 Directional filter
08/08/1978US4105548 Separation device of rigid porous inorganic hollow filament and use thereof
08/01/1978US4104394 Polytetrafluoroethylene
08/01/1978US4104170 Liquid filter having improved extended polypropylene element
08/01/1978US4104077 Shape-retaining inorganic binder, interconnected open cells
07/1978
07/25/1978US4103054 Suede-like raised woven fabric and process for preparation thereof
07/25/1978US4102785 Inside-to-outside flow filter tube and method of using same
07/25/1978US4102736 Method of manufacturing an inside-to-outside flow filter tube
07/11/1978US4100323 Scrimless filter felt
07/11/1978US4100009 Method of and apparatus for producing hollow-cylindrically shaped fibrous articles
07/11/1978US4099943 Composite fluid filtering medium and method of making
06/1978
06/27/1978US4097383 Process for production of microporous sheet
06/20/1978US4096099 Porous synthetic resin film
06/06/1978US4093437 Polyesters, rayon, lamination, mechanical strength
05/1978
05/30/1978US4092250 Water-permeable thin films of synthetic pulp or fiber containing oxygen, nitrogen or sulfur polar groups
05/16/1978US4089783 Filter
05/09/1978US4088576 Method of manufacture of tubular inertial filter
05/09/1978US4088431 Melt spinning filter
05/02/1978US4086706 Feeding and treating system
04/1978
04/25/1978US4086070 Fiber bed separator and method for separation of aerosols from gases without re-entrainment
04/18/1978US4084949 Surgical face mask filtering medium
04/04/1978US4082893 Artifical internal organs, filters
04/04/1978US4082661 Impregnation of porous ceramic filter with phenolic resin followed by carbonization
03/1978
03/28/1978US4081501 Process for producing odor absorbent and adsorbent air filter media
03/28/1978US4081371 Filtering of molten metal
03/14/1978US4078965 Composite coalescing filter tube and method of manufacture thereof
03/07/1978US4078112 Coating modification process for ultrafiltration systems
02/1978
02/28/1978US4076627 Mesh weave filter
02/28/1978US4076619 Hydrophilic acrylic polymers as marine filters, algae growth catalysts, and breeding stimulus for fish and invertebrates
02/28/1978CA1027297A1 High carbon spheroid body and method of manufacture
02/21/1978US4075303 Method of preparation of ceramic foam
02/21/1978US4075108 Polycarbonate membranes and production thereof
02/21/1978US4075092 High surface area permeable material
02/14/1978US4073732 Media for filtering blood
02/07/1978US4072616 Filter cartridge
02/07/1978US4071937 Filter cartridge with folded filter sheath
01/1978
01/31/1978US4071636 Silver halide precipitate on sheet of partially acetalled polyvinyl alcohol
01/31/1978US4071455 Filter element and method of making the same
01/31/1978US4071037 Preparation and method of use of enzyme effective for conversion and detection of carbon monoxide
01/24/1978USRE29524 Porous laminate and method of manufacture
01/24/1978US4070519 Glass and mineral fibers impregnated with resin
01/24/1978US4070300 Pourable solid filter material, particularly for the removal of unpleasant odors from the air, and a process for its manufacture
01/24/1978US4070257 Electrolytic process using novel diaphragm
01/17/1978US4069026 Filter made of electrostatically spun fibres
12/1977
12/27/1977US4065341 Method of making a liquid filter
12/20/1977US4064071 Mixing with aqueous alkali metal silicates, drying
12/20/1977US4064053 Strainer improvement
12/13/1977US4062368 Tobacco-smoke filters
11/1977
11/15/1977US4058459 Liquid filter apparatus
11/15/1977US4058456 External supported filter
11/01/1977US4056586 Method of preparing molten metal filter
11/01/1977US4056476 Blood filter media
10/1977
10/11/1977US4053662 Used for separating uranium hexafluoride isotopes
10/11/1977US4053420 Blood filter
10/11/1977US4053290 Fiber bed separator
10/04/1977US4052316 Composite coalescing filter tube
10/04/1977US4052198 Method for in-line degassing and filtration of molten metal