Patents
Patents for C01B 33 - Silicon; Compounds thereof (28,579)
06/1990
06/13/1990EP0372715A1 Polymeric basic aluminum silicate-sulphate
06/13/1990EP0372251A1 Method for the preparation of silicas
06/13/1990EP0372133A1 Large-pored crystalline titanium molecular sieve zeolites
06/13/1990EP0372132A1 Small-pored crystalline titanium molecular sieve zeolites
06/13/1990EP0372124A1 A method for the preparation of a silica sol dispersed in an organic solvent
06/13/1990DE3841222A1 Process for the parallel generation of silicon tetrafluoride and sulphur hexafluoride
06/13/1990DE3841218A1 Process for preparing highly pure silicon tetrafluoride
06/12/1990US4933404 Processes for microemulsion polymerization employing novel microemulsion systems
06/12/1990CA2005054A1 Granulated silicates with improved dissolution rate
06/06/1990EP0114876B1 Ultra-pure epitaxial silicon and process for its manufacture
06/05/1990CA1270001A1 Oligomerization of olefins
06/05/1990CA1269804A1 Method for the production of a moulding mass containing water glass
05/1990
05/30/1990CN1042554A Stable aqueous suspension of precipitated silicon dioxide
05/29/1990US4929644 Thickened organic composition having biocidal activity and an additive for thickening and imparting biocidal activity to an organic composition
05/29/1990US4929587 Method for intercalating organic-swelled layered metal chalcogenide with polymer chalcogenide by treatment with polymeric chalcogenide precursor in inert atmosphere
05/29/1990US4929431 Process for producing amorphous aluminosilicates
05/23/1990EP0368973A1 Air-gap interference pigments, manufacture and use thereof
05/23/1990EP0368919A1 Method for the multistage, waste-free processing of red mud to recover basic materials of chemical industry
05/23/1990DE3937394A1 Pptd. silica prodn. by hydrolysis of silicon tetra:chloride - by dropwise addn. of water or silicon tetra:chloride to other reactant which is mixed or dissolved in organic solvent
05/23/1990CN1042340A Polymeric basic aluminium silicate-sulphate
05/23/1990CN1008081B Process for preparing spherical sio2 particles
05/22/1990US4927616 Preparation of silane and amine alanes
05/22/1990US4927560 Gelation, drying
05/22/1990CA1269216A1 Transparent non-vitreous ceramic particulate
05/17/1990WO1990005113A1 Precipitated silicon dioxide abrasive compositions having superior compatibility with anti-plaque and therapeutic fluoride agents for dentifrice applications; dentifrice thereof; and method of making the same
05/16/1990EP0368722A1 Stable aqueous suspension of precipitated silica
05/16/1990CN1042132A Precipitated silica absorbent, and compositions based on silica
05/16/1990CN1007985B Resin compositions comprising organoclays of improved despersibility
05/15/1990US4925704 Decompositionof metal alkoxide, particle growth in alkaline conditions
05/09/1990CA2002532A1 Precipitated silicon dioxide abrasive compositions having superior compatibility with anti-plaque and therapeutic fluoride agents for dentifrice applications; dentifrice thereof; and method for making the same
05/08/1990US4923950 Compositions based on derivatives of silica modified by organic groups, preparation and application thereof, particularly as cationic conductors
05/08/1990US4923520 Spherical fused silica and its use in fillers and resin compositions
05/02/1990EP0366197A1 Method of manufacturing a monolithic silica aerogel
05/02/1990CN1041740A Process for producing magnesium carbonate and/or magnesium oxide as well as porous silicon dioxide from serpentine
05/02/1990CN1041739A Bleaching technology for removing iron by kaolin
05/01/1990US4921531 Process for forming fine ceramic powders
05/01/1990US4921026 High purity
04/1990
04/25/1990CN1041554A Process for making compositions of powdery refractory inorganic compounds and metals
04/25/1990CN1041541A Catalysts
04/24/1990US4920086 Mixed pillared clay reduction products and method of preparation
04/24/1990US4919913 Reacting finely dispersed aluminum melt with gaseous silicon halide
04/24/1990US4919908 Crystalline aluminosilicate and a method for its preparation
04/19/1990WO1990003330A3 High solids aqueous silica slurry
04/18/1990EP0363927A2 Process for the preparation of a suspension containing spherical oxide particles
04/18/1990EP0363926A2 Particulate polycondensates, process for their preparation and use thereof
04/18/1990EP0363742A1 Polysilicon with diminished hydrogen content
04/18/1990EP0190140B1 Process for the removal of impurities from optical component materials
04/18/1990CN1041396A Process for preparing metallic and non-metallic elements by magnesium chloride
04/17/1990CA1267876A1 Class of pillared interlayered clay molecular sieve products with regularly interstratified mineral structure
04/11/1990EP0363197A2 Preparation of sodium silicate
04/11/1990EP0271575B1 Layered metal chalcogenides containing interlayer chalcogenides and their synthesis
04/10/1990US4916101 Ion exchange, pyrolysis
04/10/1990US4915871 Treating with aluminate or zirconyl salt
04/10/1990US4915870 Process for the manufacture of potassium stabilized silica sols
04/10/1990US4915705 Hydrolysis with aqueous ammonia
04/05/1990WO1990003330A2 High solids aqueous silica slurry
04/04/1990EP0361386A2 Method for purifying gaseous hydrides
04/03/1990US4913966 Slurrying silica platelets, spray drying
04/03/1990US4913840 Production of stable anionic sols containing colloidal alumina hydrate
03/1990
03/28/1990EP0360554A1 Catalysts
03/28/1990CN1007354B Non. cataltic solid mullite/crystalline silica material and use thereof
03/27/1990US4912078 Mixing magnesium and aluminum hydroxide; autoclaving; compression; sintering
03/27/1990US4911903 Spherical SIO2 particles
03/27/1990US4911902 Mullite whisker preparation
03/21/1990EP0359552A2 Polysilicate microgels as retention/drainage aids in papermaking
03/21/1990EP0295269B1 Layered metal oxides containing interlayer oxides and their synthesis
03/20/1990US4910006 Mixture of oxides of silicon, germanium, aluminum, gallium and iron
03/20/1990US4909946 Water soluble polymer of acrylamide and salt of acrylic acid
03/20/1990CA1266844A1 Process for hydrotreating residual petroleum oil
03/15/1990DE3830777A1 Verfahren zur herstellung von hochreinem siliciumdioxid A process for the production of high purity silica
03/14/1990EP0358271A2 Novel crystalline (metallo)silicates and process for preparing such (metallo)silicates
03/13/1990US4908339 Flexible glass
03/13/1990US4908133 Continuous multistage membrane filtration
03/13/1990US4907731 Dynamic high pressure process for fabricating superconducting and permanent magnetic materials
03/08/1990DE3829013A1 Thickening apparatus for jelly-like material
03/07/1990EP0357395A2 A silicon smelting process and a furnace therefor
03/06/1990US4906493 Method of preparing coatings of metal carbides and the like
03/06/1990US4906446 Filler for dental materials and dental materials containing the same
03/06/1990US4906441 Fluidized bed with heated liners and a method for its use
03/06/1990CA1266402A1 Method for producing glass preform for optical fiber
03/06/1990CA1266364A1 Method for neutralizing waste sulfuric acid by adding a silicate
02/1990
02/28/1990EP0355593A2 Process for increasing the part of silicium tetrachloride
02/28/1990EP0355550A2 Preparation of precipitated silicas and their use
02/28/1990EP0355337A1 Process for preparation of solar grade silicon
02/28/1990EP0355295A2 Process for the treatment of precipitated silica, and its use in thermal insulation
02/28/1990EP0355267A1 Process for the production of zeolite NaA
02/28/1990EP0355242A1 Method for making mineral filtration beads to be used in gel adsorption and permeation chromatography
02/27/1990US4904460 Catalytic disproportionation of alkoxy silanes; phenolates, phosponium and quaternary ammonium salt catalysts
02/27/1990US4904452 Inner core heating in fluidized bed
02/27/1990CA1266161A1 Process for producing silanes
02/22/1990WO1990001458A1 Removal of coarse particles from aluminosilicate aqueous suspensions by wet grinding
02/21/1990CN1039779A Twice-aged porous inorganic oxides, catalysts, and polymerization processes
02/20/1990US4902598 Process for the preparation of silica containing charge enhancing additives
02/14/1990EP0354473A1 Removing of coarse parts in aqueous aluminosilicate suspensions by wet crushing
02/14/1990CN1039568A Method for preparing amorphous superfine sio2 from husk
02/14/1990CN1006807B Process for treatment of beer
02/14/1990CN1006801B Mixed metal layered hydroxide-clay adducts as thinckeners for water and other hydrophylic fluids
02/13/1990US4900582 Method for improving film quality of silica-based films
02/13/1990US4900532 Continuous process for refining silicon
02/13/1990US4900531 Converting a carbon preform object to a silicon carbide object