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)
06/1991
06/12/1991EP0431593A2 Separation method and separating agent
06/12/1991EP0431494A2 Filtration media with low protein adsorbability
06/11/1991US5023217 In monoclinic and cubic phases; porous; high temperature filters, kiln furniture; catalyst carriers
06/11/1991US5022991 Thermite coated filter
06/11/1991US5022964 Cellulose ester fibers/fibrets with minor amount of activated fusible fibers uniformly dispersed; dustless, dimensional stability
06/11/1991US5022897 Method for hazardous waste removal and neutralization
06/11/1991CA1284772C Filter media
06/08/1991CA2031599A1 Separation method and separating agent
06/07/1991WO1991008037A1 Improvements in the production of particulate solid-bearing low density air-permeable sheet materials
06/05/1991EP0430439A2 Extruded structure
06/05/1991EP0429805A2 Method and device for making pleated filter inserts
06/04/1991US5021831 Filter for removing smoke and toner dust used in electrophotographic/electrostatic recording apparatus
06/04/1991US5021204 Method for selectively charging honeycomb structures
06/04/1991US5021157 Filtration, drainage, and drying apparatus for deliquification of sludges
06/04/1991US5020533 Face mask with liquid and glare resistant visor
05/1991
05/29/1991DE4030626A1 Verfahren zur herstellung eines halbzeugs A method for fabricating a preform
05/28/1991US5019260 Surface treated polyvinylidene fluoride
05/28/1991US5019254 Filter pad with pocket and method of using the same
05/28/1991US5019140 Irradiated expanded polytetrafluoroethylene composites, and devices using them, and processes for making them
05/28/1991CA2030667A1 Process and apparatus for manufacturing a pleated filter insert
05/23/1991DE3938245A1 Liq. filtration by fine mobile magnetic particles layer - subject to variable field and periodically transformed for regeneration
05/22/1991EP0428478A1 Ceramic Filterbody with indicator for preheating
05/22/1991EP0428456A1 Method for manufacturing composite tubes from fabric and resin
05/22/1991EP0428400A1 Filtration media and method of manufacture
05/22/1991EP0428037A1 Filter for eliminating pollutants
05/22/1991CA2030241A1 Extruded structure
05/21/1991US5017318 Method of making a water filter
05/15/1991EP0337988B1 Method of manufacturing molded and formed filters
05/15/1991CA2029331A1 Filter for the separation of impurities or contaminants
05/14/1991CA1284022C Graded refractory cermet article
05/08/1991EP0325582B1 Molded panel filter
05/07/1991US5013459 Opthalmic fluid dispensing method
05/03/1991CA2028435A1 Preheat indicator
05/02/1991WO1991005735A2 Active carbon
05/02/1991EP0425433A1 Filter material for the filtration of soot particles
05/02/1991EP0425252A1 Metal oxide porous ceramic membranes with small pore sizes
05/02/1991EP0424377A1 Reduction of the ignition temperature of diesel soot
05/02/1991DE4031120A1 Membrane micro-filters for treating liquids and/or gases - used in the form of particles, chips of fibre obtd. by disintegrating scrap material from prodn. of membrane micro-filters
05/01/1991CN1051034A Ceramic bodies formed from partially stabilized zirconia
04/1991
04/30/1991US5011603 Alumina powder; high strength
04/30/1991US5011529 Cured surfaces and a process of curing
04/30/1991US5011023 Conical element for filtering and separation
04/30/1991CA2001811A1 Filter cap for purifying the exhaust gases of internal combustion engines, mainly for motor vehicles
04/27/1991CA2028283A1 Filter material for filtering out soot particles
04/23/1991US5009857 Filter for gases
04/18/1991WO1991005192A1 Gas inlet valve assembly for inflatable boats
04/18/1991WO1991004779A1 Process for the production of a semi-finished article, and uses of the article thus produced
04/17/1991EP0237530B1 Filter body
04/17/1991CN2075101U Filter material of polyurethane foaming plastic series
04/17/1991CN2075100U Fibre ball filtering material
04/16/1991US5008018 Process for the reduction in size of the pores of a filter medium for beverages
04/16/1991US5008013 Filter for use in a cartridge for the preparation of a beverage
04/11/1991DE3930023A1 Maintaining filter sterility by heat from conductive section - incorporated in filter and directly or inductively heated
04/10/1991EP0421734A2 Conjugate fibres and products formed from them
04/09/1991US5006399 Planar textile structure
04/04/1991WO1991004088A1 Device and method for processing blood for human transfusion
04/03/1991EP0419799A2 Slip casting process for preparing metal filters
04/02/1991US5004645 Barrier products
04/02/1991US5004545 Ceramic foam filter apparatus
04/02/1991US5004511 Process for producing non-woven fabrics of carbon fibers
03/1991
03/27/1991EP0419407A2 Partially stabilized zirconia sintered body
03/27/1991EP0419346A2 Filter for purification of platelets
03/27/1991EP0418517A2 Separating membrane and separation method
03/27/1991EP0418285A1 Coated textile materials.
03/27/1991CN1012135B Filter consisting of refrigeratory dry materials and process for their proparation and their use, in particalar medicine
03/26/1991CA1282014C Uniform minimum-permeability woven fabric, filter and process therefor
03/26/1991CA1282013C Thermally formed gradient density filter
03/21/1991DE4001654C1 Tubular membrane for micro-filtration of suspensions, etc. - produced from wire material of metal, plastic or glass, etc., with compressive force exerted to maintain spacings
03/20/1991EP0417364A1 Polyimide composite filter fabrics
03/20/1991EP0417069A1 Air laid filtering material.
03/13/1991EP0416908A2 Filter system for rejuvenating lubricating oils
03/13/1991EP0416068A1 Laminated filters
03/13/1991EP0415954A1 Strips of filter material with moulded corrugations and filter bodies made of this material
03/12/1991US4999101 Preheat indicator
03/07/1991WO1991002578A1 A filter element
03/06/1991EP0415835A1 Element for the filtration and/or the purification of hot gases and its method of manufacture
03/06/1991CN1049623A Porous sintered body and method of mfg. same
03/05/1991CA1280851C High efficiency respirator
02/1991
02/27/1991EP0414419A2 Porous sintered body and method of manufacturing same
02/26/1991US4996102 Cushions, conveyer belts, bag filters, sealants; laminated carbon and stainless steel fibers
02/26/1991CA1280699C Filter for ductless range hood
02/21/1991WO1991001834A1 Method of improving quality of porous body having air holes
02/21/1991WO1991001791A1 Process for treating a porous substrate to achieve improved water and oil repellency
02/20/1991CN1049296A Separating membrane and separation method
02/19/1991WO1991002649A1 Precoat septum with a continuous filament yarn
02/19/1991WO1991002579A1 Cooking oil filter
02/19/1991CA2064788A1 Precoat septum with a continuous filament yarn
02/13/1991EP0412931A1 Process for production of a porous ceramic body
02/13/1991EP0412930A1 Process for production of a porous ceramic body
02/13/1991EP0412673A2 Ceramic foam filters
02/13/1991EP0412079A1 Filtering medium for technical filters.
02/12/1991US4992233 Sintering metal powders into structures without sintering aids
02/12/1991US4991617 Gas inlet valve assembly for inflatable boats
02/10/1991CA2022924A1 Separating membrane and separation method
02/09/1991CA2022768A1 Process for manufacturing a ceramic foam body
02/09/1991CA2022767A1 Process for manufacturing a ceramic foam body
02/06/1991EP0411546A1 Coffee filter material and coffee filter bag
02/06/1991EP0411421A1 Process for the production of a filter and filter produced thereby
02/06/1991CN1048988A Geometric charcoal filtering
02/06/1991CN1011486B Ceramic foam filter 23
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