Patents
Patents for C01B 21 - Nitrogen; Compounds thereof (10,781)
05/1995
05/26/1995CA2176569A1 Making quantum dot particles of uniform size
05/23/1995US5417952 Process for synthesizing titanium carbide, titanium nitride and titanium carbonitride
05/23/1995US5417950 Absorption of nitrogen dioxide from nitric oxide with zeolites
05/23/1995US5417887 Reduced viscosity, organic liquid slurries of aluminum nitride powder
05/23/1995US5417823 Metal-nitrides prepared by photolytic/pyrolytic decomposition of metal-amides
05/17/1995EP0652985A1 Wires incorporating a helical component, assemblies thereof, and use of said assemblies as catalyser and/or to recover precious metals.
05/17/1995CN1028412C Method for gas separation using helically wound hollow fibers permeable membrane cartridge
05/16/1995US5415852 Solid fuel oxidizer
05/09/1995US5414050 Polymer precursors for aluminum nitride aluminum nitride-containing ceramics from polymeric precursors
05/09/1995US5413625 Mixed ion-exchanged zeolites and processes for the use thereof in gas separations
05/04/1995WO1995011857A1 Method of oxidizing nitrogen
05/04/1995WO1995011856A1 Air purification process
05/03/1995EP0650791A1 Fine particles of metals, alloys and metal compounds
05/03/1995EP0495037B1 Process of and apparatus for preparing dinitrogen pentoxide
05/03/1995CA2134631A1 Finely divided metal, alloy and metal compound powders
05/02/1995US5411762 Method of obtaining a sialon-based ceramic material by reducing an aluminosilicate material, and use thereof in forming a ceramic coating on a refractory substrate
05/02/1995US5411725 Process for the continuous conversion of one hydroxylamine salt to another hydroxylamine salt
05/02/1995CA1335426C Apparatus for the separation of gas mixtures
04/1995
04/26/1995EP0649453A1 Azeotropic compositions of perfluoroethane, and trifluoromethane, or oxide, or nitrous oxide, or carbon dioxide, or fluoromethane.
04/26/1995EP0649343A1 Foraminous sheets for use in catalysis
04/19/1995EP0628096A4 Inert gas purifying system.
04/18/1995US5407652 Method for decomposing N20 utilizing catalysts comprising calcined anionic clay minerals
04/18/1995US5407608 Preparing hot solution of metal azide with metal oxide particles suspended therein, precipitating metal azide from the solution by cooling by indirect heat exchanging
04/12/1995EP0591459A4 Process of making niobium oxide.
04/12/1995CN1101300A Process for the purification of inert gases
04/11/1995US5405592 Crystals having controlled microstructure, bulk density and porosity, for compression molding
04/11/1995US5405515 Method and apparatus for production of a carbon nitride
04/11/1995US5404727 Manufacture of chemicals
04/11/1995CA1335150C Process for the production or recovery of acids from metalliferous solutions of such acid
04/06/1995WO1995002709A3 EXTENDED NITRIDE MATERIAL COMPRISING β-C3N¿4?
04/05/1995EP0646096A1 Process for producing high purity hydroxylammonium nitrate
04/05/1995CN1101118A Production of ultrahigh purity nitrogen
04/04/1995US5403909 Catalysts for polycondensation and redistribution of organosiloxane polymers
04/04/1995US5403563 Apparatus for silicon nitride precursor solids recovery
03/1995
03/28/1995US5401697 Process for converting water-sensitive ceramic powders into a free-flowing granulated powder
03/28/1995US5401483 Catalyst assembly providing high surface area for nitric acid and/or HCN synthesis
03/28/1995US5401478 Selective catalytic reduction of nitrogen oxides
03/28/1995US5401473 Method and apparatus for treatment of NF3 gas
03/23/1995WO1995007610A1 Method and means for generating nitric oxide
03/23/1995CA2169859A1 Method and means for generating nitric oxide
03/22/1995EP0644155A1 Process for the continuous preparation of aluminium nitride by carbo nitridation of alumina in a moving bed reactor
03/22/1995EP0644154A1 Process for the continuous preparation of aluminium nitride by the carbonitridation of alumina
03/22/1995EP0496853B1 Method of extracting dinitrogen pentoxide from its mixture with nitric acid
03/21/1995US5399339 Process for the preparation of nitride complexes of transition metals
03/16/1995WO1995007234A1 PROCESS FOR PLASMACHEMICAL TRANSFORMATION OF N2O INTO NOx AND/OR INTO DERIVATIVES THEREOF
03/16/1995DE4329599C1 Process for removing impurities from hydrazine hydrate
03/15/1995EP0643143A2 Composite ultrafine particles of nitrides, method for production and sintered article thereof
03/15/1995CN1099997A Generation of nitric oxide from air for medical uses
03/08/1995EP0641737A1 Packed bed arrangement useful for mixing and/or oxidation
03/08/1995CN1099718A Circular ammonia no-hydrogen deoxygen purify system for drying polyamide fibre section
03/08/1995CN1027802C Low temp. purification of gas
03/07/1995US5395694 Aluminum nitride powder having surface layer containing oxynitride
03/07/1995US5395606 Metal nitride powders
03/01/1995EP0640379A1 Method for decomposing N20 utilizing catalysts comprising calcined anionic clay minerals
03/01/1995EP0640368A1 Chemical purification for semiconductor processing by partial condensation
02/1995
02/28/1995US5393508 Heating in liquid phase and then decompressing without any concomitant decomposition
02/21/1995US5391268 Electrochemical process for the removal of residual nitric acid from aqueous hydroxylammonium nitrate
02/21/1995CA1334475C High purity aluminum nitride of controlled morphology
02/16/1995DE4419464A1 Process for the selective and complete conversion of ammonia into nitrogen monoxide NO
02/16/1995DE4404072C1 Apparatus for generating high-pressure nitrogen
02/14/1995US5389588 Reaction injection molding of silicon nitride ceramics having crystallized grain boundary phases
02/14/1995US5389585 Fine non-oxide ceramic powders
02/14/1995US5388482 Depressed park windshield wiper mechanism
02/14/1995US5388413 Portable nitrogen source
02/14/1995CA1334333C Method for making silicon nitride powder
02/14/1995CA1334331C Apparatus and method for producing uniform, fine boron-containing ceramic powders
02/09/1995WO1995003873A1 Method and apparatus for separating nitrogen-rich gas
02/02/1995DE4325438A1 Process for the direct preparation of pure hydroxylamine-O-sulphonic acid
02/01/1995EP0636576A1 Ultra-high purity nitrous oxide producing method and unit
01/1995
01/26/1995WO1995002709A2 EXTENDED NITRIDE MATERIAL COMPRISING β-C3N¿4?
01/26/1995WO1995002446A1 Process for the purification of inert gases
01/25/1995EP0635456A1 Process for supplying nitrogen by means of semi-permeable membranes or gasseparator by adsorption
01/24/1995US5384291 Carbothermal synthesis precursors
01/24/1995US5383957 Generators for nitrogen with membranes or conduits
01/24/1995CA1334090C Oxidation of alkanes
01/23/1995CA2128451A1 Process for the production of nitrogen through semipermeable membranes or adsorption gas separators
01/19/1995WO1995001893A1 Depressed park windshield wiper mechanism
01/18/1995EP0634359A1 Preparation of high alpha-type silicon nitride powder
01/18/1995EP0487693B1 Dinitramide salts and method of making same
01/18/1995EP0306515B1 Multi-stage process for reducing the concentration of pollutants in an effluent
01/18/1995CN1097398A Method and apparatus for preparing nitrogen atmosphere by barrier separation for metallic heat treatment
01/17/1995US5382554 High-packing silicon nitride powder and method for making
01/17/1995US5382280 Two stage pressure swing adsorption process for producing the less strongly adsorbed component of a feed gas mixture
01/17/1995US5382050 Gas generator for vehicle occupant restraint
01/11/1995EP0633221A1 Thickened aqueous composition of sulfamic acid
01/11/1995EP0313648B1 Process for nitrogen oxides reduction and minimization of the production of other pollutants
01/10/1995CA2127628A1 Thickened aqueous sulfamic acid composition
01/05/1995WO1995000234A1 Container for carbon molecular-sieve material
01/05/1995DE4321019A1 Purification of nitrogen trifluoride
01/04/1995EP0603382A4 Process for making high purity hydroxylammonium nitrate.
01/03/1995US5378666 From silica, carbon and nitrogen
01/03/1995US5378263 High purity membrane nitrogen
01/03/1995CA1333746C Process for producing amorphous boron nitride of high hardness
12/1994
12/27/1994US5376349 Nitriding tantalum/v/ hydrated oxide with dry ammonia
12/22/1994WO1994025396A3 Process for synthesis of aluminum powder with low oxigen content
12/15/1994DE4337336C1 Finely divided metal, alloy and metal compound powders
12/14/1994EP0628514A1 Preparation of high alpha-type silicon nitride powder
12/14/1994EP0628096A1 Inert gas purifying system
12/14/1994EP0628048A1 Metallo-organic precursors
12/14/1994CN1096283A Process for the preparation of powder for ceramics made of metal and/or metalloid nitride and/or carbide by flash...
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