Patents
Patents for C01B 21 - Nitrogen; Compounds thereof (10,781)
01/1993
01/03/1993CA2072722A1 Multistage cascade-sweep process for membrane gas separation
12/1992
12/29/1992US5174979 Mixed ion-exchanged zeolites and processes for the use thereof in gas separations
12/29/1992US5174975 Low temperature pyrolysis
12/23/1992WO1992022499A1 Low pressure drop, high surface area ammonia oxidation catalyst and catalyst for production of hydrocyanic acid
12/23/1992EP0519806A1 Continuous process for the preparation of aluminium nitride by carbonitriding of aluminium
12/23/1992EP0519699A1 Low pressure drop, high surface area oxidation catalyst and catalyst for production of hydrocyanic acid
12/23/1992EP0519492A2 Reaction sintered composites and shaped bodies containing boron nitride and method of making them
12/23/1992CA2111197A1 Low pressure drop, high surface area ammonia oxidation catalyst and catalyst for production of hydrocyanic acid
12/22/1992US5173462 Industrial adsorbents based on low-silica x zeolites, for non-cryogenic separation of air gases, and their manufacture process
12/22/1992CA1311871C Stable methylpolydisilylazane polymers
12/15/1992US5171557 Method for silicon nitride precursor solids recovery
12/15/1992US5171385 High energy-density N2 O2 compound
12/15/1992CA1311342C Process for producing nitrosyl fluoride
12/09/1992EP0517570A1 Membrane generators having high flexibility
12/09/1992EP0517365A1 Method and apparatus for silicon nitride precursor solids recovery
12/09/1992EP0517228A1 Method for separating and recovering an acid
12/09/1992EP0516933A1 Stabilization of aqueous hydroxylamine solutions
12/08/1992US5169810 Process for forming tin-zirconia ceramics
12/08/1992US5169613 Method for the preparation of boron nitride using ammonia-monohaloborane
12/08/1992US5169412 Membrane air drying and separation operations
12/08/1992CA1311107C Process for nitrogen oxides reduction with minimization of the production of other pollutants
12/04/1992CA2070150A1 Membrane generators having high flexibility
12/02/1992EP0516558A1 Method for refining calcium using nitride
12/02/1992EP0516401A1 Purification of gas streams
12/01/1992US5167935 Plant for producing nitric acid
12/01/1992CA1310806C Process for the preparation of n-(dichlorophosphoryl)trichlorophosphazene
11/1992
11/29/1992CA2068093A1 Method and apparatus for silicon nitride precursor solids recovery
11/26/1992WO1992020621A1 Catalyst and process for removal of sulphur compounds and nitrogen oxides from fluid streams
11/25/1992EP0514647A1 Water-in-oil emulsions containing hydroxylamine
11/25/1992CN1066429A Process for preparing aluminum nitride powder via controlled combustion nitridation
11/24/1992US5166432 Catalytic decomposition of urea
11/24/1992US5166001 Ceramic coatings
11/24/1992CA2069139A1 Water-in-oil emulsions containing hydroxylamine
11/19/1992EP0514143A1 Method of producing alkali metal azides
11/19/1992EP0514058A1 Pressure swing adsorption apparatus
11/17/1992US5164263 Aluminum nitride flakes and spheres
11/17/1992US5163978 Dual product pressure swing adsorption process and system
11/17/1992CA1310367C Electrochemically controlled superconductivity
11/17/1992CA1310171C Process for the continuous production of high purity, ultra-fine,aluminum nitride powder by the carbo-nitridization of alumina
11/12/1992WO1992019571A1 Gas generator
11/12/1992WO1992019534A1 Process for preparing aluminium nitride powder via controlled combustion nitridation
11/12/1992CA2106669A1 Process for preparing aluminium nitride powder via controlled combustion nitridation
11/11/1992EP0512780A1 Method and apparatus for continuously separating nitrogen
11/11/1992EP0512762A2 Process for preparing polycrystalline cubic boron nitride and resulting product
11/11/1992EP0512424A1 Oxygen selective desiccants
11/10/1992US5162558 Introducing a silazane compound into trihalogenoborane at a low reaction temperature; pyrolysis to boron nitride ceramics
11/10/1992US5162272 Pyrolysis of a polysilazane melt; molded machine parts; stress, heat and corrosion resistance
11/10/1992US5162076 Electrodialysis
11/09/1992CA2067944A1 Oxygen selective desiccants
11/04/1992EP0511490A1 Process for the production of finely divided crystalline silicon nitride
11/04/1992EP0511489A1 Process for the synthesis of siliconnitride with a small crystal size
11/04/1992CA2056509A1 Process for preparing polycrystalline cubic boron nitride and resulting product
11/03/1992US5160722 Low pressure drop, high surface area ammonia oxidation catalyst
11/03/1992US5160386 For inflatable air bags
10/1992
10/27/1992CA1309259C Hydrometallurgical arsenopyrite process
10/27/1992CA1309230C Process for nitrogen oxides reduction and minimization of theproduction of other pollutants
10/21/1992EP0509971A1 A process for the sorption of residual gas and especially nitrogen gas by means of a non-evaporated barium getter
10/21/1992EP0509759A1 Recovery of abrasive grit with a nitric acid-containing medium.
10/21/1992EP0509655A1 Non-segregating, gas-generating composition consisting of loosely-packed, azide-containing pellets with small siliceous particles there between
10/21/1992CN2119416U High-pure nitrogen generator
10/21/1992CN1065448A Moving bed process for carbothermally synthesizing nonoxide ceramic powders
10/20/1992US5156830 Comminuting a slurry of silicon containing powder and water, dehydrating, nitriding, heating
10/17/1992CA2060148A1 Particulate collection by condensing gas generant, air bag inflator
10/16/1992CA2065964A1 Process using an acidic medium containing nitric acid
10/13/1992US5155081 Platinum-on-graphite catalysts
10/13/1992US5154907 Process for the continuous production of high purity, ultra-fine, aluminum nitride powder by the carbo-nitridization of alumina
10/07/1992CN1065027A Process for production of gas-permeable nets of noble metals for catalytic processes
10/06/1992US5152971 Production of high molecular weight, essentially uncrosslinked polychlorophosphazenes
10/06/1992US5152813 Nitrogen adsorption with a Ca and/or Sr exchanged lithium X-zeolite
10/06/1992CA1308231C Process for producing silicon nitride
10/01/1992WO1992016457A1 Moving bed process for carbothermally synthesizing nonoxide ceramic powders
10/01/1992WO1992016456A1 Method for preparing boron nitride
10/01/1992WO1992013628A3 Gas separations utilizing glassy polymer membranes at sub-ambient temperatures
10/01/1992DE4209878A1 Nitrogen gas generating grains
09/1992
09/30/1992EP0505551A1 Carbonate-free inorganic nitrates or oxides and process for production thereof
09/29/1992US5151395 Bulk gas sorption and apparatus, gas containment/treatment system comprising same, and sorbent composition therefor
09/29/1992US5151260 Process for preparing fine powders of aluminum nitride
09/29/1992US5150604 Method for determining the end of useful life of an inert gas purifier and apparatus therefore
09/23/1992EP0504723A1 Preparation process of permeable precious metal nets for catalytic processes
09/22/1992US5149515 Nitric Acid, Spray Roasting, Atomizing
09/22/1992US5149514 Low temperature method of forming materials using one or more metal reactants and a halogen-containing reactant to form one or more reactive intermediates
09/22/1992US5149381 Method of making a composite powder comprising nanocrystallites embedded in an amorphous phase
09/22/1992CA1307648C Process for the reduction of nitrogen oxides in an effluent using sugar
09/17/1992CA2063041A1 Process for the production of gas-permeable nets of noble metals for catalytic processes
09/16/1992EP0503930A2 Production of titanium diboride and boron nitride powders
09/15/1992US5147831 Low pressure reaction of titanium dioxide and carbon source in nitrogen atmosphere with controlled heating
09/15/1992US5147623 Heating and pressurization of hexagonal boron nitride particles in the presenc eof an aluminum/magnesium alloy catalyst
09/09/1992EP0502399A2 Siliconboronitride ceramic and precursors, process for their preparation as well as their use
09/09/1992CN1064254A Pressure-changing adsorption process and device for air separation
09/08/1992US5144809 Apparatus for production of nitrogen
09/02/1992EP0501933A2 Process for the purification of fluorine-containing gases
09/02/1992EP0296210B1 Method for producing ceramic powders
09/01/1992US5143872 Method of regenerating inactive and poisoned platinum catalysts
08/1992
08/26/1992EP0500040A1 Process for kinetic gas-solid chromatographic separations
08/26/1992EP0221899B1 Process for removing oxides of nitrogen and sulfur from combustion gases
08/25/1992US5141730 Stabilization of hydroxylamine solutions
08/25/1992US5141604 Absorption of hydrogen; desorption
08/25/1992CA1306770C Process and apparatus for producing nitrogen
08/22/1992CA2061006A1 Catalyst for polymerisation
08/20/1992WO1992014568A1 Production of metal and metalloid nitrides
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