Patents
Patents for C01B 21 - Nitrogen; Compounds thereof (10,781)
12/1994
12/13/1994CA1333473C Process for the treatment of a gazeous mixture by adsorption
12/08/1994WO1994027710A1 Pollution reduction process
12/07/1994EP0627382A2 Oxynitride of the formula LnTaON2 with improved brilliancy, process for the preparation thereof and application thereof
12/07/1994EP0487728B1 Process for manufacturing powdery aluminum nitride coated on the surface with oxide, oxynitride or nitride of yttrium.
12/07/1994CN1096021A Process for the preparation of powder for ceramics made of optically transparent gamma aluminium oxynitride and the...
12/06/1994US5370854 Reduction of metal oxides to nitrides, carbides
12/06/1994US5370853 Zeolite-like compound
11/1994
11/30/1994EP0625965A1 Moisture-resistant aluminum nitride powder and methods of making and using.
11/29/1994US5368825 Apparatus for the flame preparation of ceramic powders
11/24/1994WO1994026658A1 Solvent transfer process for dinitrogen pentoxide
11/24/1994WO1994026395A1 A method for converting ammonia in a gas stream to nitrogen
11/24/1994CA2163374A1 Solvent transfer process for dinitrogen pentoxide
11/23/1994EP0625369A1 Process for removing N2O in gaseous effluents from nitric oxidations
11/22/1994US5366711 Process for the oxidative purification of waste gases containing nitrogen oxides
11/17/1994EP0624148A1 Process for forming a dinitramide salt or acid.
11/15/1994US5364609 Process for the preparation and processing of a hydroxylammonium salt solution
11/15/1994US5364500 Stripping using a countercurrent flow
11/15/1994US5364248 Sliding member, a method for producing same, and usages of same
11/15/1994CA1333004C Eta phase materials, methods of producing the same and use thereof as catalysts for alcohol synthesis hydrocarbon synthesis, hydrocarbon hydrogenation and hydrocarbon conversion reactions
11/11/1994CA2123265A1 Process for lowering nitrous oxide level in gazeous effluents, particularly those derived from synthesises by nitric oxydation
11/10/1994WO1994025396A2 Process for synthesis of aluminum powder with low oxigen content
11/09/1994CN1026469C Pressure swing adsorption method for separating gaseous mixtures
11/08/1994US5362398 Filtration
11/01/1994US5360603 Packed bed arrangement useful for mixing and/or oxidation
11/01/1994US5359857 Installation for air liquefaction separation and process therefor
10/1994
10/27/1994WO1994024501A1 Method of and apparatus for manufacturing various kinds of gases to be supplied to semiconductor manufacturing factories
10/26/1994EP0620803A1 Process for preparing ultrafine aluminum nitride powder
10/26/1994CN1026336C Pt base alloy ofr ammonia oxidation catalysis
10/19/1994EP0620042A1 Hydrogenation catalyst-based on metallic platinum partially poisoned by finely divided sulfur
10/18/1994US5356608 Mounting substrate, removing air and moisture, mixing gases of organoaluminum compouns and ammonia to deposit to desire thickness, cooling
10/18/1994US5356120 Device for producing finely-divided metal and ceramic powder
10/13/1994WO1994022786A1 Aluminum nitride, aluminum nitride containing solid solutions and aluminum nitride composites prepared by combustion synthesis
10/13/1994WO1994022562A1 A process for reducing the concentration of nitric oxide in an exhaust gas
10/12/1994EP0619284A1 Gas generator for vehicle occupant restraint
10/12/1994EP0619269A2 Process for the preparation of powder for optically transparent ceramic made of gamma-aluminium oxynitride and the powder obtained therefrom
10/05/1994EP0618172A1 Silicon nitride powder and method for producing the same
10/05/1994EP0618171A1 Process for the production of silicon nitride
10/04/1994US5352430 Mixing host material and intercalant in fluidized bed reactor with stream of inert gas, heating, passing oxygen stream through to cause reaction
10/04/1994US5352424 Containing polycarboxylic acid, ester or anhydride gettering compound to react with ammonia formed
10/04/1994US5352272 Cooling streams of nitrogen and oxygen obtained by exposing heated air to permselective membrane having pressure on the one side and vacuum on the other
10/04/1994US5351492 Distillation strategies for the production of carbon monoxide-free nitrogen
10/02/1994CA2117129A1 Process for the production of silicon nitride
10/01/1994CA2119081A1 Process for the preparation of a gamma aluminum oxynitrite powder optically transparent and powder thereof
09/1994
09/29/1994WO1994021840A1 Apparatus and method for delivering reagents in vapor form to a cvd reactor
09/29/1994CA2158434A1 Apparatus and method for delivering reagents in vapor form to a cvd reactor
09/28/1994EP0616973A1 Process for removing excess acid from acidic hydroxylamine salt solution
09/28/1994EP0616972A1 Process for the preparation of nitride and/or carbide ceramic powder of metals on metalloids by flash-pyrolysis and the powder obtained by this process
09/28/1994EP0503001B1 Process for chemical vapor deposition of transition metal nitrides
09/28/1994CN1092855A Single column cryogenic rectification system for producing nitrogen gas at elevated pressure and high purity
09/27/1994US5349822 Method and apparatus for the production of ultra-high purity nitrogen
09/24/1994CA2119588A1 Preparation process of nitride and/or metallic carbide and/or metalloidic ceramic powder by flash pyrolysis and powder of thereof
09/21/1994EP0615952A2 Composite ultrafine particles of aluminum nitride and rare earth nitride, method for production and sintered article thereof
09/20/1994US5348919 High-packing silicon nitride powder and method for making
09/15/1994WO1994020415A1 Method of generating nitric oxide gas using nitric oxide complexes
09/14/1994EP0614991A1 A diluted solution of a hydride in liquid nitrogen
09/14/1994CN1025913C Machine for making pure nitrogen by pressure variation and adsorption
09/13/1994US5346536 Process for separating nitrogen gas
09/13/1994US5345773 Method and apparatus for the production of ultra-high purity nitrogen
09/07/1994EP0447448B1 Method for purification of acids from materials comprising acid and salt
09/06/1994US5344635 Aluminum nitride
09/06/1994US5344623 Solvent extraction, crown ethers
09/06/1994US5344615 Wet-process apparatus
09/01/1994WO1994019275A1 Aluminum nitride powder having a reduced ammonia odor and a method for preparing the same
09/01/1994CA2154350A1 Aluminum nitride powder having a reduced ammonia odor and a method for preparing the same
08/1994
08/31/1994CN1091331A Purification system using heat of compression
08/24/1994EP0591390A4 Method for the preparation of niobium nitride
08/23/1994US5340896 Thermoset polymeric precursors for aluminum nitride
08/23/1994US5340561 Heat treating nitrogen- and phosphorus-containing silane compounds
08/23/1994US5340511 Production of carbon fibre
08/18/1994WO1994018120A1 Metal nitride production by hot mechanical alloying
08/17/1994EP0611180A1 Process for obtaining a sialon containing ceramic material by reduction of an aluminosilicate precursor and use thereof for applying a ceramic coating onto a refractory substrate
08/17/1994EP0505398B1 Process for obtaining nitrogen from air by pressure swing adsorption on carbon molecular sieves
08/17/1994CN1090921A Simplified apparatus for producing liquid nitrogen
08/16/1994US5338522 Adding mercaptothiozoles, mercaptothiolozines, mercaptoalkanol and thiuram disufides
08/11/1994DE4303106A1 Process for preparing finely divided chloride-free silicon carbonitride powders
08/10/1994EP0609401A1 PROCESS FOR PREPARING HYDROXYLAMINE FROM NO x?-CONTAINING FLUE GASES.
08/09/1994US5336656 Catalyst for production of nitric acid by oxidation of ammonia
08/02/1994US5334438 Composite material with a refractory fibrous reinforcement and its production process
08/02/1994US5333463 Removal of carbon dioxide and water with liquid phase adsorption by zeolite; vaporization, distillation; withdrawal as high and medium purity
07/1994
07/27/1994EP0607979A1 Single column cryogenic rectification system for producing nitrogen gas at elevated pressure and high purity
07/27/1994EP0607618A1 Gas generator for vehicle occupant restraint
07/22/1994CA2113864A1 Single column cryogenic rectification system for producing nitrogen gas at elevated pressure and high purity
07/21/1994WO1994016022A1 Method of producing gold- or silver-coloured pigments or pigments of other colours
07/21/1994WO1994015711A1 Catalyst packs
07/21/1994WO1994015698A1 Apparatus and use for the oxygen enrichment of air
07/20/1994EP0606535A1 Knitted fabric of noble metal wires and process for its manufacture
07/20/1994EP0460075B1 Preparation of nitrosyl fluoride
07/19/1994US5330943 Process for improving the physical and catalytic properties of a fluid cracking catalyst
07/19/1994US5330857 Method of generating high-purity nitrogen gas
07/19/1994US5330793 Metallo-organic precursors to titanium nitride
07/19/1994US5330554 Method for producing iron-nitride powders
07/13/1994EP0606081A1 Purification system using heat of compression
07/12/1994US5329000 Binding to silicon tetrahydrazide and recovering by elution with buffers
07/12/1994US5328673 Process for removal of NOx and SOx oxides from waste gases with chloric acid
07/12/1994US5327729 Simplified apparatus for producing liquid nitrogen
07/12/1994CA1330616C Process for the preparation of n-(dichlorophosphoryl) trichlorophosphazene from phosphorous pentachloride and ammonium chloride
07/07/1994CA2112823A1 Purification system using heat of compression
07/05/1994US5326432 Method of producing magnesium chloride hexahydrate and other alkaline earth salts
06/1994
06/29/1994EP0603798A1 Membrane process for the production of high purity nitrogen
06/29/1994EP0603767A1 Deoxygenation of non-cryogenically produced nitrogen with a hydrocarbon
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