| Patents for C01B 21 - Nitrogen; Compounds thereof (10,781) |
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| 04/08/1987 | EP0217633A1 Method for producing sialon powders |
| 04/08/1987 | EP0216932A1 Rhombohedral polycrystalline boron nitride and process for its production |
| 04/07/1987 | US4656300 Process for a thermal treatment of a polysilazane containing .tbd.SiH groups and .tbd.Si--NH-- groups |
| 04/07/1987 | US4656018 Cyclic phosphonitrilic halide process |
| 04/07/1987 | US4656017 Pyridine phosphonitrilic halide trimer process |
| 04/01/1987 | EP0216493A1 Platinum recovery using perforation resistant gauzes |
| 04/01/1987 | EP0215899A1 Enhanced pressure swing adsorption processing. |
| 03/31/1987 | US4654063 Combination of membrane and non-membrane separation |
| 03/31/1987 | CA1219814A1 Process for obtaining high concentration argon by pressure-swing-adsorption |
| 03/24/1987 | US4652436 Preparation of nitride and carbide from inorganic-organic polymer complex |
| 03/18/1987 | EP0214489A2 Process for the preparation of silicon and compounds thereof in a very finely divided form |
| 03/17/1987 | US4650773 Silicon, nitrogen, oxygen |
| 03/11/1987 | EP0213548A2 Cascade heat recovery with coproduct gas production |
| 03/11/1987 | EP0213458A1 Catalyst for reducing the nitrogen oxide content of combustion gases |
| 03/11/1987 | CN85107232A Process for producing of nitrogen and device thereof |
| 03/04/1987 | EP0213117A1 Process for the elimination and valorization of nitrogen oxides in fumes |
| 03/04/1987 | EP0212515A1 The use of a catalyst for reducing the nitrogen oxide content of combustion gases |
| 03/04/1987 | EP0212514A1 The use of a catalyst for reducing the nitrogen oxide content of combustion gases |
| 03/04/1987 | EP0212513A1 Catalyst for reducing the nitrogen oxide content of combustion gases |
| 03/04/1987 | EP0212344A1 Process for making a homogeneous yttria-alumina doped silicon nitride article |
| 02/26/1987 | DE3529688A1 Process for producing a heat-resistant material, in particular for use in machine construction and machine tool construction |
| 02/25/1987 | EP0211523A1 Inert gas generation |
| 02/24/1987 | US4645807 Method for forming new preceramic polymers for SiC and Si3 N4 /SiC systems |
| 02/24/1987 | US4645579 Electrodialysis |
| 02/24/1987 | CA1218216A1 Process for preparing hydrazines |
| 02/19/1987 | DE3528760A1 Process for the preparation of hydroxylammonium nitrate |
| 02/19/1987 | DE3528463A1 Process for the preparation of aqueous solutions of free hydroxylamine |
| 02/17/1987 | US4644021 1,1,6,6-tetraphenyl-2,4-hexadiyne-1,6-diol or 1,1-di(2,4-dimethylphenyl)-2-propyne-1-ol and clathrate compound |
| 02/17/1987 | US4643859 Silicon or aluminum nitride powder or powder mixture of silicon nitride and silicon carbide |
| 02/17/1987 | US4643806 Electrocatalytic energy conversion and chemicals production |
| 02/17/1987 | US4643743 Pressure swing adsorption process for supplying oxygen under variable demand conditions |
| 02/10/1987 | US4642396 Decomposing acid with nitric oxide; 2,4-dinitrotoluene |
| 02/10/1987 | US4642207 Process for producing ultrafine particles of ceramics |
| 02/03/1987 | US4640825 Process for simultaneous removal of SO2 and NOx from gas streams |
| 02/03/1987 | US4640023 Apparatus for manufacturing powdered silicon nitride |
| 01/27/1987 | US4639501 Method for forming new preceramic polymers containing silicon |
| 01/27/1987 | US4639257 Semipermeable membrane, low temperature distillation |
| 01/21/1987 | EP0209472A1 Process for the heat treatment of a polysilazane having SiNH, Si-H and unsaturated groups |
| 01/21/1987 | CN86104331A Method of producing silicon nitride powders |
| 01/14/1987 | EP0208630A1 Process for treating a polysilazane having at least two =/- SiH groups with a cationic catalyst |
| 01/13/1987 | US4636374 Method for manufacturing aluminum oxynitride refractory |
| 01/07/1987 | EP0207694A2 Process for the manufacture of nitric oxide |
| 01/06/1987 | US4635273 Method and apparatus for the thermal production of metal carbides and metals |
| 01/06/1987 | US4634584 Disocoloration inhibition |
| 12/30/1986 | US4632849 Vapor phase |
| 12/30/1986 | EP0206795A2 Method of producing silicon nitride powders |
| 12/30/1986 | EP0206449A2 A process for preparing ceramic materials |
| 12/17/1986 | EP0204696A1 Catchment packs |
| 12/16/1986 | US4629613 Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation |
| 12/16/1986 | CA1215350A1 Carbon molecular sieves and a process for their preparation and use |
| 12/16/1986 | CA1215211A1 Borate chloride polymerization catalysts |
| 12/09/1986 | US4628119 Process for preparing hydrazine hydrohalogenide |
| 12/09/1986 | US4627967 Crystallization, phosphonitrilic chloride trimer |
| 12/09/1986 | CA1214921A1 Oxygen/nitrogen production with molten alkali salts |
| 12/02/1986 | US4626422 High purity high surface area silicon nitride |
| 12/02/1986 | US4626417 Methods for chemically reducing nitrogen oxides |
| 11/26/1986 | EP0202824A2 Oxidation process |
| 11/25/1986 | CA1214382A1 Method for regenerating pickling acids |
| 11/20/1986 | WO1986006711A1 Process and apparatus for removing oxides of nitrogen and sulfur from combustion gases |
| 11/20/1986 | WO1986006646A1 Recovery of mixed acids from mixed salts |
| 11/20/1986 | EP0202177A1 Organopolysiloxane composition comprising compounds which generate free radicals and which can be cross-linked by energy |
| 11/18/1986 | US4623525 Stabilizing complex for poly(dichlorophosphazene) |
| 11/18/1986 | CA1214154A1 Method for reproducing oxygen and nitrogen and membrane therefor |
| 11/12/1986 | EP0139732B1 Hard layer formed by incorporating nitrogen into mo or w metal and method for obtaining this layer |
| 11/06/1986 | WO1986006361A1 Preparing metal compounds, alloys and metals by pyrolysis |
| 11/06/1986 | WO1986006360A1 Process for preparing high purity aluminum nitride |
| 10/29/1986 | EP0198953A2 Continuous process for purifying crude linear polydichlorophosphazene polymer |
| 10/28/1986 | US4619905 Process for the synthesis of silicon nitride |
| 10/21/1986 | US4618691 Cyclotriphosphazatriene-derivatives |
| 10/21/1986 | US4618593 Impregnation with tellurium containing solution |
| 10/21/1986 | US4618592 Metal oxide impurities; high purity and density |
| 10/21/1986 | CA1212873A1 Organometallic chemical vapour deposition of films |
| 10/15/1986 | EP0197717A1 Methods and apparatus for purifying inert gas streams |
| 10/14/1986 | US4617182 Cascade heat recovery with coproduct gas production |
| 10/08/1986 | EP0196949A1 Crystallized bulky aluminosilicate with a foamed structure, and process for making it |
| 10/07/1986 | US4615863 Process for production of readily sinterable aluminum nitride powder |
| 10/01/1986 | EP0196103A2 Maximum aluminum X-type zeolite adsorbents |
| 09/30/1986 | US4614729 Granular metal oxides |
| 09/30/1986 | US4614525 Heat exchanging, purification |
| 09/30/1986 | CA1211920A1 High hardness hafnium nitride |
| 09/24/1986 | EP0195388A1 Production of oxygen enriched air |
| 09/24/1986 | CN85102704A Equipment and process for producing superpure nitrogen from common nitrogen |
| 09/24/1986 | CN85102492A Method for preparing nitrates and nitrites using concentrated nitrogen oxide |
| 09/23/1986 | US4613490 Process for preparing silicon nitride, silicon carbide or fine powdery mixture thereof |
| 09/17/1986 | EP0194715A1 Process for preparing nitric oxide |
| 09/17/1986 | CN85102708A Agent for purification of inert gases from hydrogen and oxygen |
| 09/16/1986 | US4612297 Process for preparation of silicon nitride powder of good sintering property |
| 09/16/1986 | US4612045 Method for making aluminum nitride powder |
| 09/12/1986 | WO1986005169A1 Rhombohedral polycrystalline boron nitride and process for its production |
| 09/12/1986 | WO1986005121A1 Enhanced pressure swing adsorption processing |
| 09/09/1986 | US4610864 Method of continuously producing powder of silicon compound useful as ceramics material |
| 09/09/1986 | US4610857 Method for making ultra-fine ceramic particles |
| 09/03/1986 | EP0193192A2 Pyrolytic boron nitride article and method for producing the same |
| 09/03/1986 | CN86102340A Enhanced pressure swing adsorption processing |
| 08/27/1986 | EP0192394A2 Selective adsorption process |
| 08/26/1986 | US4608243 Wear resistant tool coating |
| 08/12/1986 | US4605539 Phosphonitrilic chloride trimer purification |
| 08/05/1986 | US4604151 Method and compositions for generating nitrogen gas |
| 07/29/1986 | US4603038 Phosphazene trimer purification |
| 07/29/1986 | US4603036 Process for treatment of a gas stream containing nitrogen oxides |