Patents
Sitemap › B01 - Physical or chemical processes or apparatus in general › B01D - Separation › B01D 39 - Filtering material for liquid or gaseous fluids
Patents for B01D 39 - Filtering material for liquid or gaseous fluids (24,884)
11/1981
11/26/1981WO1981003265A1 Disposable surgical apparel and method of producing it
11/24/1981US4302502 Filters for molten metal
11/24/1981US4302333 Backpressure grid plate for pressure filtration system
11/18/1981EP0040022A2 Filter element for serum separating apparatus
11/17/1981US4300918 Method for removing moisture particles
11/17/1981US4300277 Pressure filters
11/03/1981CA1111781A1 Wax separation process
10/1981
10/28/1981EP0038743A1 Process for the superficial treatment of a non-woven and very aerated fibrous filter layer forming an electret, and its application to filters and especially respiratory masks
10/27/1981USRE30782 Method for the manufacture of an electret fibrous filter
10/20/1981US4296166 Air filter of polyurethane mesh containing carbon adsorbent
10/20/1981US4296056 Basalt or lava sintered and molded with borax, sodium metasilicate or potassium metasilicate
10/20/1981US4295868 Filter for cleaning hot gases
10/20/1981US4295867 Apparatus for separating carbon black from carbon-black aerosol
10/20/1981CA1111014A1 Filter block and method of making the same
10/20/1981CA1110980A1 Composite fluid filtering medium
10/15/1981WO1981002844A1 Filter medium and method of making same
10/13/1981US4294701 Paint strainer
10/13/1981US4294599 Air cleaner
10/07/1981EP0036855A1 Respiratory mask and filtering material included therein
10/06/1981US4293438 Plastics
10/06/1981US4293378 Enhanced wet strength filter mats to separate particulates from fluids and/or coalesce entrained droplets from gases
10/06/1981US4293357 Method for producing ceramic honeycomb filters
09/1981
09/29/1981US4292365 Polymeric mats having continuous filaments with an asymmetrical cross-sectional shape
09/23/1981EP0036338A1 A regenerative, fluid filter
09/23/1981EP0036321A1 Ceramic filter
09/23/1981EP0036315A2 Anisotropic membranes
09/23/1981EP0036031A1 Process for the separation of oil or oily substances from gases like air
09/22/1981US4290889 Support for backflushable filter media
09/22/1981US4290785 Dust collector and method of operation
09/21/1981EP0016806A4 Oil reconditioning filter.
09/17/1981WO1981002530A1 Textile filter for gas flow,comprising organic fibers grafted with active monomers
09/16/1981EP0035949A1 Textile filter for flows of gas comprising organic fibres grafted with active monomers
09/15/1981US4289627 Fabric of synthetic fibers wherein individual fibers are bound to each other as to be unshiftable
09/08/1981US4288484 Novel fibrous assembly and process for production thereof
09/08/1981US4288462 Method for removing cationic contaminants from beverages
09/01/1981US4287068 Powdered metal filter composition and processes for producing the same
09/01/1981US4287066 Sieve having substantially plane sieve sheets and a method for its manufacture
09/01/1981US4286977 High efficiency particulate air filter
08/1981
08/26/1981EP0034417A2 Support for backflushable filter media
08/25/1981US4286030 Cured, cellulose fibers and thermoplastic fibers
08/25/1981US4286015 Polyaryl ether sulfone semipermeable membrane and process for producing same
08/25/1981CA1107657A1 Hollow fiber package body and its production
08/18/1981US4284507 Knit pile filter
08/11/1981US4283289 Blood filter for leukocytes
08/11/1981US4283210 Ceramic honeycomb filter and a method of producing the same
08/11/1981US4283186 Method of forming cigarette filter material
07/1981
07/29/1981EP0032744A2 Chemical-resistant wholly aromatic polyamide fiber material
07/22/1981EP0032228A2 Use of porous filter tubes in precoat candle filters
07/21/1981US4279630 Air cleaning means for internal combustion engine
07/21/1981CA1105217A1 Crimped filter of electrically charged electret fiber material
07/14/1981US4278551 Tubular yarn bundle surfaces modified with cationic colloidal silica
07/14/1981US4278544 Filter medium for fluid
07/07/1981US4277429 Production of asymmetric porous film materials
07/07/1981US4277266 Ultra filtration unit comprising a tubular filter element
07/07/1981US4277262 Reusable axial filter for high temperature gases
07/01/1981EP0031223A1 Crystalline calcium sodium or lithium phosphate having an asbestos-like form, a process for its preparation and composites of organic polymeric material containing it
06/1981
06/23/1981US4274979 Manufacture of activated carbon
06/23/1981US4274960 Filter means
06/23/1981US4274914 Filter material
06/16/1981CA1103174A1 Porous ceramic barrier support and process for preparing the same
06/16/1981CA1103105A1 Method of manufacturing supports for porous filters
06/16/1981CA1103046A1 Filter
06/09/1981US4272318 Apparatus for making filter elements for gas or liquid
06/09/1981US4272264 Adsorbent package
06/03/1981EP0029802A1 Ceramic filter with foamy structure for the filtration of molten metals
06/02/1981US4270936 Coiled fibrous metallic material and coating for diesel exhaust particulate trap
06/02/1981US4270933 Regenerative, fluid filter
05/1981
05/19/1981US4268289 Flame arresting air filter element
05/19/1981US4267626 Fiber bed element and method for making the same
05/12/1981US4267047 Dialyzing membrane with adsorbent layer
05/12/1981US4266408 Filter block and method of making the same
05/12/1981CA1100746A1 Additive for smoking tobacco products, filter elements thereof and process for the preparation thereof
05/05/1981US4265659 Ceramic open-cell foam with dispersed ceramic fibers
04/1981
04/29/1981EP0027740A1 A method of manufacturing fibrous rod-like articles and apparatus for performing such a method
04/28/1981US4264346 Diesel exhaust particulate traps
04/28/1981US4263843 Method and apparatus for controlled removal of excess slurry from organic foam
04/21/1981CA1099647A1 Tubular filter elements with improved side seam seal
04/21/1981CA1099464A1 Asymmetric porous film materials and process for producing same
04/16/1981WO1981001019A1 Respiratory mask and filtering material included therein
04/14/1981US4261718 Filter bed of compressed coils
03/1981
03/31/1981US4259096 Fuel vapor adsorption type air cleaner element for internal combustion engine
03/25/1981EP0025735A1 Method of selectively closing the ends of a honeycomb structure
03/25/1981EP0025639A1 Process for preparing porous cellulose spherical particles
03/24/1981US4258099 For filtering molten metals
03/24/1981US4257810 With a open-cell structure for use as filters in the purification of molten metals
03/24/1981US4257791 Filter
03/17/1981US4256722 Process for producing porous spinel materials
03/17/1981CA1097566A1 Method of making a porous dimensionally stable heat- resistant and corrosion-resistant packing
03/11/1981EP0024600A1 Polycarbonate-polyether-copolymer membrane, process for its production and use thereof
03/04/1981EP0024289A1 Multilayered filtration material with at least one layer of an open-cell foam plastic
03/03/1981US4253967 Defoaming and recycling during surgery
03/03/1981US4253963 With hydrophobic synthetic silicic acid as wetting agent
02/1981
02/24/1981US4252591 Corrugating apparatus and process
02/24/1981US4252590 Melt spinning, bonding, solidification
02/24/1981CA1096317A1 Separation device of rigid porous inorganic hollow filament and use thereof
02/17/1981US4251239 Multi-purpose ceramic element
02/17/1981US4251238 Filtration through highly porous nonwoven metal fabric
02/10/1981US4250172 Needled fiber mat containing granular agent
02/10/1981US4249918 Fiber bed element and process for removing aerosols from gases
02/10/1981CA1095223A1 Method and a machine for manufacturing multi-tube filters
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