Patents for C04B 38 - Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof (15,246)
07/1990
07/12/1990WO1990007474A1 Method of producing ceramic products using sludge of sewage treatment
07/12/1990DE3916586C1 Porous ceramic objects mfr. - using solid aggregate pore formers of aliphatic and/or alicyclic non-saccharide poly:ol(s)
07/11/1990CN2059164U Foam powder coal ash plate
07/11/1990CN1008729B Bubble-like ceramic filtering device for filtering liqud metal and its preparation process
07/11/1990CA2007450A1 Ceramic filter for the filtering of molten metals
07/10/1990CA2003944A1 Phosphate-containing ceramic structure for catalyst support and fluid filtering
07/05/1990DE3841117C1 Process for producing steam pressure-cured gas concrete
07/04/1990WO1990007478A1 Incandescent mantles
07/04/1990EP0376690A1 Fired product utilizing incineration ash and method of production thereof
07/04/1990CA2047227A1 Incandescent mantles
07/03/1990US4939028 Microporous composites and electrolytic applications thereof
07/03/1990US4938905 Method of controlling the orientation of short fibers in a short fiber-reinforced article
07/03/1990US4938829 Process of making a diaphragm of vitreous hard carbonaceous material for an acoustic device
06/1990
06/28/1990WO1990007013A1 Porous refractory material, article made thereof and method for making said article
06/28/1990CA2006854A1 Fired product utilizing incineration ash and producing method thereof
06/27/1990EP0375235A1 Process for the manufacture of mineral fibre compositions
06/26/1990US4937210 Production of porous inorganic materials
06/26/1990US4937209 Porous inorganic materials
06/26/1990US4936270 Composite light alloy member
06/21/1990DE3926411A1 Ceramic filter for liquids - obtd. by sintering porous sprayed granular material made from aluminium oxide, kaolin and talc
06/20/1990EP0373215A1 Porous inorganic membrane with reactive inorganic binder, and method of forming same.
06/19/1990US4935178 Water absorbing mold which is vibrated to increase contact-sintering after hardening and removal
06/19/1990CA1270498A1 Hydrophobic inorganic structure
06/16/1990CA2004977A1 Process for the manufacture of mineral fibre compositions
06/12/1990US4932786 Bubble generator for cellular concrete
06/12/1990US4932438 Valve provided with valve bodies made of a ceramic compound
06/12/1990US4932426 Causing a quick outflow of air, releasing and carrying loose fibers
06/05/1990CA1269804A1 Method for the production of a moulding mass containing water glass
05/1990
05/31/1990DE3835851C1 Method of manufacturing artificial stones
05/23/1990EP0369638A1 Sol gel derived ceramic bubbles
05/23/1990EP0369330A2 High temperature filter
05/22/1990US4927673 Rapid technique for making improved laminar ceramic shell molds using a phosphate modified aluminum salt binder
05/22/1990US4927611 Lightweight magnesia clinker and process for the preparation of the same
05/22/1990CA1269404A1 Porous membrane of sinterable refractory metal oxides or silica
05/17/1990WO1990005123A1 Refractory for cast molding
05/16/1990CN2057210U Microporous ceramic sand filter
05/15/1990US4925631 Method of casting a hopcalite filter and cast ceramic fiber-hopcalite
05/15/1990US4925584 Compression of mixture containign an ammonia generating compound
05/15/1990US4925490 Mechanical seal using pore-dispersed material, and pore-dispersed cemented carbide and method for manufacturing same
05/14/1990CA2001192A1 High temperature filter
05/08/1990US4923830 Ceramic bodies formed from partially stabilized zirconia
05/08/1990US4923829 Sintered body of interlocked silicon nitride with carbides, nitrides, borides or silicides; shockproof, heat resistance
05/08/1990US4923747 Ceramic thermal barriers
05/08/1990US4923608 Micro/ultrafiltration membranes with a fixed pore size formed through irradiation with pulsed lasers and process for manufacturing the same
05/03/1990WO1990004707A1 Device for burning out solids, and process for manufacturing said device
05/02/1990EP0366028A2 Process for the production of a material containing clay and fibres
05/02/1990EP0365826A1 Process and device for the production of mineral-fibre boards
05/02/1990CN2056604U Dynamic membrane water filter using porous ceramic filter as back line
05/02/1990CN1041748A Reinforced light concrete products and making method thereof
05/01/1990US4921616 Alveolar ceramic filters for high melting metals
04/1990
04/26/1990DE3835794A1 Process for producing a structured ceramic sheet or a ceramic body built up of such sheets
04/25/1990EP0365327A2 Method of preparation of porous carbon material and material produced by the method
04/25/1990EP0365022A2 Process for the production of artificial stones
04/25/1990CN1041648A High strength light weight rice hull ash insulation brick and its producing method
04/25/1990CA2001330A1 Infrared heater for fluid immersion apparatus
04/24/1990US4919860 Manufacture of porous carbon membranes
04/24/1990US4919751 Phase seperation of calcium oxide
04/21/1990CA2000994A1 Method of preparation of porous carbon material and material produced by the method
04/19/1990WO1990003874A1 Casting mold for slip casting and slip casting method
04/18/1990EP0364297A2 Porous carbon electrode substrates for fuel cells
04/18/1990EP0320036B1 Process for the separation of ashes at the combustion of coal to produce gas
04/17/1990US4917935 Ceramic packing
04/17/1990US4917857 Process for producing metallic or ceramic hollow-sphere bodies
04/17/1990US4917835 Partially curing phenolic resin, grinding, forming and sintering
04/11/1990EP0362400A1 Method of firing ceramic honeycomb structure
04/11/1990EP0362213A1 Process for manufacturing a structured ceramic film or a ceramic object composed of such films.
04/05/1990WO1990003349A1 Process for the production of porous ceramics using decomposable polymeric microspheres and the resultant product
04/04/1990EP0361326A2 Silicon-infiltrated silicon carbide parts with a porous surface, and method of making them
04/04/1990EP0214066B1 Consolidated microporous material, process for its preparation and its applications, particularly to producing cathode elements
03/1990
03/28/1990EP0360606A2 Preparation of elastic graphite materials
03/28/1990EP0360593A2 Method of producing porous ceramic honeycomb structural bodies
03/28/1990EP0360591A2 Honeycomb structural body and method of producing the same
03/28/1990EP0360563A2 Method of producing ceramic honeycomb structural bodies
03/28/1990EP0360404A1 Calcium dialuminate/hexaluminate ceramic structures
03/28/1990EP0360244A1 Porous ceramic sinter and process for producing same
03/27/1990US4912076 Filter for cleaning exhaust gases of diesel engines
03/27/1990US4912070 Continuously porous absorbent material possessing far infrared electromagnetic field
03/27/1990US4911788 Forming aqueous slurry; mixing to uniform distribute solids; dehydrating, drying, abrading
03/14/1990EP0357789A1 Process of producing a ceramic honeycomb structural body
03/13/1990US4908339 Flexible glass
03/13/1990US4908200 Treating carbon material with nitric acid or nitric-sulfuric acid mixture, treating with basic aqueous solution to precipitate carbon component, graphitizing
03/13/1990US4908174 Placing hardenable plastic material and accelerator into mold, the composition containing a water in oil emulsion, hardening, dewatering, drying
03/13/1990CA1266685A1 Controlled pore size ceramics particularly for orthopaedic and dental applications
03/06/1990US4905971 Refractory ceramic sink
02/1990
02/28/1990EP0355916A2 Porous composite ceramic structure
02/27/1990US4904427 Inorganic power, organic solvent foaming agent and vinyl chloride polymer
02/27/1990US4904291 Sintering of powder and an inorganic salt, with a defined grade of grain which has a higher desielication temperature
02/27/1990US4903617 Process of removing the ash from the gas produced by the combustion of coal
02/27/1990CA1266251A1 Formation of aluminium oxide film by anodization, voltage reduction and separation
02/22/1990WO1990001471A1 Method of preparing rigid mullite-whisker felt
02/22/1990WO1990001259A1 Substrate for plants and its use
02/20/1990US4902563 Carbonaceous fiber or fiber assembly with inorganic coating
02/20/1990US4902314 Ceramic honeycomb
02/14/1990EP0354839A2 Porous inorganic body and process for preparing the same
02/14/1990EP0354721A2 Porous ceramic honeycomb filter and method of producing the same
02/13/1990US4900698 Ceramic product and process
02/13/1990US4900483 Method of producing isotropically reinforced net-shape microcomposites
02/13/1990US4900359 Cellular concrete
02/13/1990US4900245 Lithium aluminum silicate ceramic; backflash prevention
02/07/1990EP0353669A2 Process for producing ceramic bodies