Patents for C01B 21 - Nitrogen; Compounds thereof (10,781) |
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01/26/1994 | CN1081122A Catalyst for ammonia catalytic oxo-synthesis of hydrazine hydrate |
01/25/1994 | US5281311 Neutralization of a solution of hydroxylamine salt and acid, electrolysis, oxidation and reduction |
01/23/1994 | CA2100922A1 Process and means for the oxidative destruction of azides |
01/20/1994 | WO1994001512A1 Azeotropic compositions of perfluoroethane, and trifluoromethane, or oxide, or nitrous oxide, or carbon dioxide, or fluoromethane |
01/20/1994 | WO1994001362A1 Process for making high purity hydroxylammonium nitrate |
01/20/1994 | CA2115453A1 Process for making high purity hydroxylammonium nitrate |
01/19/1994 | EP0578887A1 Method of manufacturing intercalation compounds |
01/19/1994 | EP0453546B1 Method of separating dinitrogen pentoxide from its solution in nitric acid |
01/18/1994 | US5279808 Metal nitride powders |
01/18/1994 | CA2081438A1 Method of manufacturing intercalation compounds |
01/18/1994 | CA1326121C Low temperature light off ammonia oxidation |
01/12/1994 | CN1023471C Process for producing nitrogen |
01/11/1994 | US5278124 Low pressure drop, high surface area ammonia oxidation catalyst |
01/11/1994 | CA1325878C Nitric acid concentration |
01/11/1994 | CA1325876C Mobile atom insertion reaction, mobile atom transmissive membrane for carrying out the reaction and reactor incorporating the mobile atom transmissive membrane |
01/05/1994 | EP0577213A1 Process for the preparation and purification of a hydroxylammonium salt solution |
01/05/1994 | EP0577100A1 Process for reducing the acid content of hydroxylamine salt solutions and for preparing hydroxylamines from hydroxylamine salts |
01/05/1994 | EP0576975A1 Phosphonitride chloride compositions and preparation method |
01/05/1994 | EP0576540A1 Moving bed process for carbothermally synthesizing nonoxide ceramic powders. |
01/04/1994 | US5276105 Polymer precursors for aluminum nitride |
01/04/1994 | US5275738 Filter device for acids and process for filtering inorganic acids |
01/04/1994 | US5275640 Operating absorbers alternately |
01/02/1994 | CA2094758A1 Process for reducing the acid content of hydroxylamine salt solutions and for preparing hydroxylamines from hydroxylamine salts |
12/29/1993 | EP0576254A2 Reactive non-metallic product recovered from dross |
12/28/1993 | US5273699 Moisture-resistant aluminum nitride powder and methods of making and using |
12/23/1993 | WO1993025496A1 Method of making moisture resistant aluminum nitride powder and powder produced thereby |
12/23/1993 | WO1993025471A1 Process for producing high purity hydroxylammonium nitrate |
12/23/1993 | DE4300463A1 Prepn. of carbamic acid in aq. soln. useful as plant nutrient or for healing wounds - by reacting gaseous carbon di:oxide and nitrogen@ with mixed liq. phase catalyst then hydrolysing prod. in water bath |
12/23/1993 | CA2098776A1 Reactive non-metallic product recovered from dross |
12/22/1993 | EP0574989A1 Process for the preparation and processing of a hydroxylammonium salt solution |
12/22/1993 | EP0574440A1 Production of metal and metalloid nitrides |
12/15/1993 | EP0521087B1 Process for the treatment of an aqueous solution containing mainly nitric and hydrofluoric acids |
12/15/1993 | CN1079443A High pure nitrogen generator |
12/15/1993 | CN1023104C Improved method and equipment for producing dry, high purity nitrogen |
12/15/1993 | CN1023103C Dry high purity nitrogen production process and system |
12/14/1993 | CA1325182C Pressure swing adsorption process |
12/09/1993 | WO1993024229A1 Foraminous sheets for use in catalysis |
12/09/1993 | WO1993024219A1 Fluidized bed reaction pipe with gas distributor, and its use |
12/09/1993 | CA2137083A1 Foraminous sheets for use in catalysis |
12/08/1993 | EP0572788A1 Submicron carbonitride powder, process for the preparation thereof and application |
12/08/1993 | EP0572634A1 Combined adjustable-flow rate nitrogen and oxygen production method. |
12/07/1993 | US5268157 Kniting wires of noble metal alloys |
12/01/1993 | EP0571997A1 Moisture removal from a wet gas |
12/01/1993 | EP0571914A1 Method to work cubic boron nitride article |
12/01/1993 | CN1079005A Submicron carbonitride powders, a process for their production and their use |
11/30/1993 | US5266535 Process for the production of sintering-active Si3 N4 powders |
11/30/1993 | US5266293 Knit fabric, oxidation catalyst |
11/30/1993 | US5266292 Ozone carrier gas |
11/30/1993 | US5266291 Packed bed arrangement for oxidation reaction system |
11/30/1993 | US5266290 Process for making high purity hydroxylammonium nitrate |
11/30/1993 | US5266101 Mixing high and low purity nitrogen |
11/30/1993 | CA2096927A1 Moisture removal from a wet gas |
11/25/1993 | WO1993023160A1 An improved catalyst for the production of nitric acid by oxidation of ammonia |
11/24/1993 | EP0571251A1 Rotary-drum furnace for chemical reactions |
11/23/1993 | US5264198 Method for production of spacecraft-grade N2 O4 |
11/23/1993 | US5264123 Acid recycling system |
11/18/1993 | EP0569765A1 Apparatus for manufacturing fine metal and ceramic powder |
11/18/1993 | EP0540689A4 Process for nitriding silicon-containing materials |
11/18/1993 | EP0540683A4 Process for making silicon nitride articles |
11/18/1993 | EP0540671A4 Preparing silicon nitride with densification aid, and results |
11/18/1993 | EP0433398B1 Boron nitride of high hardness |
11/11/1993 | DE4214719A1 Metallic and/or ceramic powders - produced by gas phase reaction (CVR) of metallic cpds. plus other named reactants in tubular reactor have narrow, predetermined size range and high purity |
11/10/1993 | EP0569310A1 Installation for air liquefaction separation and process therefor |
11/10/1993 | EP0568861A1 Finely divided non-oxide ceramic powders |
11/09/1993 | US5260397 Thermoset polymeric precursor for aluminum nitride |
11/09/1993 | US5259934 Direct current, electrolysis cell |
11/09/1993 | CA1323976C Production of ceramic materials by pyrolyzing the reaction mixture containing an aluminum compound |
11/03/1993 | CN2145180Y Ammonia oxidation for nitric acid manufacture |
11/02/1993 | US5258169 High pressure ammoniation of organylaminosilane |
10/28/1993 | WO1993021108A1 Method for aqueous processing of aluminum nitride and compositions therefrom |
10/27/1993 | CN1022577C Method of preparing nitrogen-based controllable atmosphere used for metal thermal treatment |
10/26/1993 | US5256387 Catalyst for the production of nitric acid by oxidation of ammonia |
10/26/1993 | US5256331 Water-in-oil emulsions containing hydroxylamine |
10/26/1993 | CA1323485C Catalytic process for making compounds having a non-lewis acid/base group iiia metal to group va nonmetal bond |
10/20/1993 | EP0574440A4 Production of metal and metalloid nitrides. |
10/20/1993 | EP0566459A1 Reagent and catalytic process for cleaving protected functional groups |
10/19/1993 | US5254324 Dinitramide salts and method of making same |
10/16/1993 | CA2093989A1 Reagent and catalytic process for clearing a protected function |
10/14/1993 | WO1993020022A1 Process for producing carbonaceous composition |
10/14/1993 | WO1993014027A3 Process for preparing ultrafine aluminum nitride powder |
10/12/1993 | US5252248 Comminuting a slurry of silicon powder and water |
10/06/1993 | EP0563205A1 Method of producing a sintered carbonitride alloy for semifinishing machining. |
10/06/1993 | EP0563204A1 Method of producing a sintered carbonitride alloy for fine milling. |
10/06/1993 | EP0563203A1 Method of producing a sintered carbonitride alloy for intermittent machining of materials difficult to machine. |
10/06/1993 | EP0563182A1 Method of producing a sintered carbonitride alloy for fine to medium milling. |
10/05/1993 | US5250550 Complexes of nitric oxide with polyamines |
10/05/1993 | US5250278 Combustion of fuel and oxygen to produce silicon carbide, and of silicon carbide and nitrogen to produce silicon nitride |
10/05/1993 | CA1322655C Crash bag propellant composition and method for generating nitrogen gas |
09/29/1993 | EP0562567A1 Ammonia oxidation catalyst |
09/29/1993 | EP0562400A1 A sliding member, a method for producing same, and usages of same |
09/29/1993 | EP0562248A1 Polymer precursor for silicon carbide/aluminum nitride ceramics |
09/28/1993 | US5248490 Process for the preparation of silicon nitride having a small crystallite size |
09/28/1993 | US5248483 Apparatus and methods for producing ceramic products |
09/28/1993 | CA1322443C Semi-permeable membranes comprising predominantly of polycarbonates derived from tetrahalobisphenols |
09/22/1993 | EP0561340A1 Process for separating nitrogen gas |
09/21/1993 | US5246683 Process for producing small particles of aluminum nitride and particles so-produced |
09/17/1993 | EP0572634A4 Combined adjustable-flow rate nitrogen and oxygen production method. |
09/15/1993 | EP0560258A2 Reaction injection molding of silicon nitride ceramics having crystallized grain boundary phases |
09/15/1993 | EP0560005A1 Process for the preparation of silicon nitride, starting material therefor and process for its preparation |
09/15/1993 | CN1076269A Process and apparatus for separating air |