| Patents for C01B 21 - Nitrogen; Compounds thereof (10,781) |
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| 06/29/1994 | EP0603382A1 Process for making high purity hydroxylammonium nitrate |
| 06/29/1994 | CN2170296Y Coke mulecular sieve machine for making nitrogen |
| 06/28/1994 | US5324496 Recovering abrasive grit by dissolving metal in nitric acid medium in closed container with oxidizing atmosphere |
| 06/23/1994 | WO1994013582A1 Treating hydroxylamine salts containing excess acid |
| 06/23/1994 | WO1994013581A1 Metal nitride powders |
| 06/23/1994 | CA2151140A1 Metal nitride powders |
| 06/22/1994 | EP0603170A2 Enhanced thermal and ignition stability azide gas generant, and process and apparatus for making |
| 06/22/1994 | EP0395746B1 Process for making transition metal nitride whiskers |
| 06/22/1994 | CA2111923A1 High purity membrane nitrogen |
| 06/21/1994 | CA1330252C Process and apparatus for removing oxides of nitrogen and sulfur from combustion gases |
| 06/14/1994 | US5320819 Direct catalytic process for the production of hydroxylamine |
| 06/14/1994 | US5320818 Deoxygenation of non-cryogenically produced nitrogen with a hydrocarbon |
| 06/09/1994 | WO1994012432A1 Gas purification |
| 06/09/1994 | WO1994012429A1 PROCESS FOR REMOVING NOx/SOx OXIDES FROM GASES ______________ |
| 06/09/1994 | CA2149443A1 Process for removing nox/sox oxides from gases |
| 06/08/1994 | EP0543009B1 Process for purifying nitrogen trifluoride gas |
| 06/08/1994 | CN1024915C Method and equipment for preparing nitrogen by pressure-changing absorption |
| 06/07/1994 | US5318763 Reacting dinitrogen tetroxide with an excess of ozone in volatile inert organic solvent; evaporation; condensation |
| 06/07/1994 | US5318762 Process for treating aqueous solutions of hydroxylamine salts containing excess acid |
| 06/07/1994 | US5318759 Membrane/PSA-deoxo process for nitrogen production |
| 06/01/1994 | CN1024780C Polymeric hydridothiosilazane and process for production thereof and from which manufacture of ceramic materials containing silicon nitride and process for production thereof |
| 05/31/1994 | US5316804 Depositing a cubic boron nitride film of a single phase on the surface of a substrate |
| 05/31/1994 | US5316749 Process for forming ammonium dinitramide salt by reaction between ammonia and a nitronium-containing compound |
| 05/31/1994 | US5316554 Method for processing crystalline ammonium carbamate |
| 05/25/1994 | EP0598384A1 Oxygen removal from partially purified nitrogen |
| 05/24/1994 | US5314675 Process for direct nitriding of metals of low melting point |
| 05/18/1994 | CN1024526C End purifying device suitable for N,A, He |
| 05/17/1994 | US5312942 Silicon boron nitride ceramic and precursor compounds, a process for their preparation and their use |
| 05/17/1994 | CA1329461C Process of producing aluminum and titanium nitrides |
| 05/11/1994 | WO1994010104A1 Method of preparing hydrazine nitroform |
| 05/11/1994 | EP0596268A1 Multiple purity membrane process |
| 05/11/1994 | DE4337689A1 Polycrystalline material contg. boron@, carbon@ and nitrogen@ - used in prodn. of grinding materials, cutting tools and semiconductors |
| 05/04/1994 | EP0595181A1 Membrane/PSA-deoxo process for nitrogen production |
| 04/27/1994 | EP0594489A1 Process for the continuous conversion of a hydroxylamine salt in another hydroxylamine salt |
| 04/27/1994 | CN1024322C Processing nitrogen-rich, hydrogen-rich and olefin-rich gases with physical solvents |
| 04/26/1994 | US5306320 High temperature, high pressure stability |
| 04/22/1994 | CA2108858A1 Membrane/psa-deoxo process for nitrogen production |
| 04/20/1994 | EP0592867A1 Process for the preparation of tantalum (v) nitride and use thereof |
| 04/19/1994 | US5304258 Magnetic alloy consisting of a specified FeTaN Ag or FeTaNCu composition |
| 04/19/1994 | US5303556 Single column cryogenic rectification system for producing nitrogen gas at elevated pressure and high purity |
| 04/13/1994 | EP0592323A1 Process and apparatus for the production of ultra-pure nitrogen under pressure |
| 04/13/1994 | EP0591459A1 Process of making metal oxides |
| 04/13/1994 | EP0591390A1 Method for the preparation of metal nitrides |
| 04/13/1994 | EP0537242B1 Process for the preparation of transition metal nitrido complexes |
| 04/13/1994 | CN1085311A Manufacture of chemicals |
| 04/12/1994 | US5302366 Ceramic formed from injected combustible mixture |
| 04/12/1994 | US5302189 Membrane nitrogen gas generator with improved flexibility |
| 04/12/1994 | CA1328346C Method for densification of amorphous ceramic material |
| 04/07/1994 | DE4300988C1 Oxygen-enriched air generator contg. zeolite bed giving pure prod. - with chamber in outlet system opened during adsorption and sealed during regeneration phase, e.g. for use in vehicle or aircraft |
| 04/07/1994 | CA2101804A1 Multiple purity membrane process |
| 04/06/1994 | EP0590946A1 Production of nitrogen |
| 04/06/1994 | EP0590378A1 Aluminum nitride powder having surface layer containing oxynitride |
| 04/05/1994 | US5300228 Method for separating and recovering an acid |
| 03/31/1994 | DE4326444A1 Nitriding alumina to produce aluminium nitride |
| 03/31/1994 | DE4232074A1 Stable ethanolic aluminium nitride suspension prod. for wet moulding - by adding poly:carboxylic acid to give max. particle charge and amine as dispersant, esp. for electrophoretic moulding |
| 03/30/1994 | EP0589766A1 Method and apparatus for producing ultra-high purity nitrogen |
| 03/30/1994 | EP0589646A1 Distillation process for the production of carbon monoxide-free nitrogen |
| 03/30/1994 | EP0589639A2 Method of producing pyrotechnic masses |
| 03/23/1994 | EP0588171A1 Process for the transformation of water - sensitive ceramic powders into a flowable granulate |
| 03/23/1994 | EP0587888A1 Process for producing carbonaceous composition |
| 03/23/1994 | CN1084136A Process for the preparation and purificatin of a hydroxylammonium salt solution |
| 03/23/1994 | CA2106056A1 Method of producing pyrotechnic masses |
| 03/22/1994 | US5296211 Compound having three-dimensional network in which both phosphorus and silicon are tetrahedrally surrounded by nitrogen |
| 03/17/1994 | WO1994005960A1 Process and apparatus for producing liquid carbon dioxide |
| 03/17/1994 | CA2143290A1 Process and apparatus for producing liquid carbon dioxide |
| 03/16/1994 | EP0587049A1 Method of preparing pourable powder from ceramic powder susceptible to water |
| 03/15/1994 | US5294425 Polysilazane precursors for silicon nitride and resultant products |
| 03/15/1994 | CA1327693C Process for concentrating aqueous solutions of hydroxylammonium salt |
| 03/09/1994 | CN1083414A Multistage cascade-sweep process for membrane L'Exploitation des procedes georges claude gas separation |
| 03/09/1994 | CN1083413A A process for the sorption of residual gas and especially nitrogen gas by means of a non-evaporated barium getter alloy |
| 03/08/1994 | CA1327463C Machinable-grade, ferrous powder blend containing boron nitride |
| 03/03/1994 | WO1994004250A1 Gas separations utilizing glassy polymer membranes at sub-ambient temperatures |
| 03/02/1994 | EP0585160A1 Fast response high purity membrane nitrogen generator |
| 03/02/1994 | EP0585159A1 Membrane nitrogen gas generator with improved flexibility |
| 03/02/1994 | EP0585158A1 Membrane gas generator in association with bulk storage for increased flexibility and productivity |
| 03/02/1994 | EP0585018A1 Cosmetic composition for coloring hair and skin and for UV-protection |
| 03/01/1994 | US5290742 Methods of preserving, storing, and using certain carbon supported platinum catalysts |
| 03/01/1994 | US5290741 Methods of preserving, storing, and using hydroxylamine production catalyst |
| 03/01/1994 | CA1327338C Process for producing devices containing silicon nitride films |
| 03/01/1994 | CA1327263C Low temperature light off ammonia oxidation |
| 02/27/1994 | CA2104811A1 Membrane nitrogen gas generator with improved flexibility |
| 02/27/1994 | CA2104810A1 Membrane gas generator in association with bulk storage for increased flexibility and productivity |
| 02/23/1994 | EP0583686A2 Process for the preparation of silicon nitride powder |
| 02/22/1994 | US5288339 Process for the production of magnetic material based on the Sm-Fe-N system of elements |
| 02/22/1994 | CA1327182C Infusible preceramic polymers via ultraviolet treatment in the presence of a reactive gas |
| 02/18/1994 | CA2104177A1 Cosmetic composition |
| 02/17/1994 | WO1994003665A1 Wires incorporating a helical component, assemblies thereof, and use of said assemblies as catalyser and/or to recover precious metals |
| 02/17/1994 | DE4326446A1 Producing four-valent metal nitride(s) - by heating cpd. contg. metal in nitrogen@ at relatively low temp. with additive capable of decomposing to yield cyanide ions or radicals |
| 02/16/1994 | CN1023787C Polymeric hydridosilazane and process for production thereof and from which manufacture of ceramic materials containing silicon nitride and process for production thereof |
| 02/16/1994 | CN1023786C Ceramic materials containing silicon nitride and process for production thereof |
| 02/15/1994 | US5286533 Method of making hard boron nitride by a plasma CVD method employing beam irradiation |
| 02/15/1994 | US5286469 Pyropolymers producing metallic phosphates; fire retardants, lubricants, ion exchangers, heterogenous catalyst |
| 02/15/1994 | CA1326945C Water-soluble boron containing impurity reduced hexagonally crystalline boron nitride and process for production thereof |
| 02/09/1994 | EP0581795A1 Gas generator |
| 02/08/1994 | US5284639 Hydriding alloys containing iron or nickel with niobium, then reacting metal hydrides with nitrogen under high temperature and pressure, oxygen-free conditions |
| 02/08/1994 | US5284506 Fast response high purity membrane nitrogen generator |
| 02/03/1994 | WO1994002414A1 Manufacture of gas hydrates |
| 02/02/1994 | EP0581093A1 Process and agent for the oxidative destruction of azides |
| 02/02/1994 | EP0581080A1 High-packing silicon nitride powder and method for making |
| 02/01/1994 | CA1326589C Process for making transition metal nitride whiskers |