| Patents for C01B 21 - Nitrogen; Compounds thereof (10,781) |
|---|
| 10/06/1999 | EP0946414A1 Microwave plasma chemical synthesis of ultrafine powders |
| 10/06/1999 | EP0946411A1 Method for the synthesis of group iii nitride crystals |
| 10/06/1999 | EP0946290A1 Ammonia oxidation catalyst |
| 10/05/1999 | US5960777 Combustion engine air supply system |
| 09/29/1999 | EP0945401A2 Process for the preparation of hydroxylammonium sulfate |
| 09/29/1999 | EP0945400A2 Process for the preparation of nitric acid |
| 09/29/1999 | EP0945179A2 Platinum-containing catalyst for the production of nitrogen monoxide and process for its preparation |
| 09/29/1999 | CN1229767A Method for preparing iron nitrogen Nm alloy and iron nitrogen-boron nitride nm composite material |
| 09/29/1999 | CN1045277C Method of generated no from air flow containing N2O |
| 09/23/1999 | WO1999048125A1 Polymer formulations for gettering hydrogen |
| 09/23/1999 | WO1999047454A1 Synthesis method for powder ceramic complexes of refractory metals |
| 09/23/1999 | DE19812509A1 Katalysator zur Gewinnung von Stickstoffmonoxid und Verfahren zu seiner Herstellung A catalyst for obtaining nitrogen monoxide and process for its preparation |
| 09/23/1999 | DE19812508A1 Verfahren zur Herstellung von Hydroxylammoniumsulfat A process for preparing hydroxylammonium |
| 09/22/1999 | EP0943706A1 Hollow microfiber and process for preparing the same |
| 09/22/1999 | CN1045188C Megnetic field type oxygen enriched air producing apparatus |
| 09/21/1999 | US5954859 Solid electrolyte ionic conductor oxygen production with power generation |
| 09/16/1999 | WO1999046202A1 Method of producing dinitramide salts |
| 09/15/1999 | EP0540689B1 Process for nitriding silicon-containing materials |
| 09/15/1999 | CN1228412A Process for preparation of nitrosyl chloride |
| 09/10/1999 | WO1999044938A1 Method for producing hydroxylammonium salts |
| 09/10/1999 | WO1999044937A1 Material with reduced optical absorption |
| 09/09/1999 | DE19808939A1 Verfahren zur Herstellung von Hydroxylammoniumsalzen The method for producing hydroxylammonium salts |
| 09/08/1999 | EP0940367A1 Method for the preparation of nitrosyl chloride |
| 09/01/1999 | EP0939066A1 Method for forming high density boron nitride and high density agglomerated boron nitride particles |
| 09/01/1999 | CN1227531A Boron nitride and process for preparing the same |
| 08/26/1999 | WO1999042709A1 Combustion engine air supply system |
| 08/26/1999 | WO1999042434A2 Method for producing aqueous hydroxylamine solutions which are substantially free of metal ions |
| 08/26/1999 | WO1999042415A2 Method for producing graphite-type boron nitride |
| 08/25/1999 | EP0853592B1 Process and device for producing nitrogen from air |
| 08/25/1999 | CN1226673A Cryogenic rectification system for producing ultra-high purity nitrogen and ultra-high purity oxygen |
| 08/24/1999 | US5943600 Treatment of a titanium nitride layer to improve resistance to elevated temperatures |
| 08/19/1999 | DE19806578A1 Production of aqueous hydroxylamine solution containing essentially no metal ions, used in electronics industry |
| 08/18/1999 | EP0936429A2 Cryogenic rectification system for producing ultra-high purity nitrogen and ultra-high purity oxygen |
| 08/17/1999 | CA2262238A1 Cryogenic rectification system for producing ultra-high purity nitrogen and ultra-high purity oxygen |
| 08/17/1999 | CA2259473A1 Procedure for preparing nytrosyl chloride |
| 08/12/1999 | WO1999040025A1 Novel materials useful as electrolytic solutes |
| 08/12/1999 | DE3348407C2 Fine aluminium nitride powder with high purity |
| 08/11/1999 | EP0933991A1 Powders providing controlled sustained release of a gas |
| 08/10/1999 | US5935298 Solid electrolyte ionic conductor oxygen production with steam purge |
| 08/10/1999 | CA2008413C Ammonia oxidation |
| 08/04/1999 | CN1225036A Method for the adsorptive separation of air |
| 07/29/1999 | WO1999037656A1 Silica gel incorporating polyazacycloalkane structural units |
| 07/28/1999 | EP0931585A1 Radially corrugated catalyst unit |
| 07/28/1999 | CN1044355C Synthesis of nm-sized magnesium nitride |
| 07/28/1999 | CN1044332C Process for separation of gas using high osmosis membrane |
| 07/27/1999 | US5928732 Method of forming silicon oxy-nitride films by plasma-enhanced chemical vapor deposition |
| 07/27/1999 | US5928407 Alternating pressure apparatus for obtaining oxygen from the air and method for the operation thereof |
| 07/27/1999 | CA2259847A1 Catalyst |
| 07/20/1999 | US5925429 Pyrolytic boron nitride container, and manufacture thereof |
| 07/20/1999 | US5925327 Blending clay with mixture of titanium dioxide and zinc oxide and fluorohydrocarbon anionic surfactant; spray drying formed zinc titanate; blow-hole elimination |
| 07/15/1999 | WO1999029425A8 Catalytic member for converting ammonia |
| 07/15/1999 | WO1999025667A3 Method for the conversion of ammonia |
| 07/14/1999 | EP0928774A1 Process for production of ammonium thiosulphate |
| 07/14/1999 | CN1222483A Process for removing hydrogen and/or carbon monoxide from air stream |
| 07/13/1999 | US5923945 Method of preparing coated nitride powder and the coated powder produced thereby |
| 07/13/1999 | US5922107 Absorption |
| 07/13/1999 | CA2132143C Process for continuous preparation of aluminium nutride by carbonitruration in a fluidizing bed reactor |
| 07/08/1999 | WO1999033597A1 Sm-Fe-N ALLOY POWDER AND PROCESS FOR THE PRODUCTION THEREROF |
| 07/06/1999 | US5919287 Ion exchanging |
| 07/06/1999 | US5918482 Cryogenic rectification system for producing ultra-high purity nitrogen and ultra-high purity oxygen |
| 07/01/1999 | WO1999032843A1 Process for separating and purifying fluorine compounds, and installation thereof |
| 06/29/1999 | US5916475 Ionic conducting material having good anticorrosive properties |
| 06/29/1999 | CA2141254C Vsa adsorption process with continuous operation |
| 06/23/1999 | EP0924485A1 Process for separating and puryfying fluorine compounds, and installation thereof |
| 06/23/1999 | CN1220234A Method for reducing discharge of nitrogen oxide in course of preparing nitrate |
| 06/23/1999 | CN1220180A Heat treatment nitrogen base atmosphere selection deoxidizing catalyst |
| 06/17/1999 | WO1999029425A1 Catalytic member for converting ammonia |
| 06/16/1999 | EP0922673A1 Low-silica faujasite type zeolite and method for producing the same |
| 06/16/1999 | EP0784593B1 Method of producing hydroxylamines from ammonia or the associated amines, hydrogen and oxygen |
| 06/16/1999 | CN1219502A Solid electrolyte ionic conductor oxygen production method with steam purge |
| 06/15/1999 | US5912200 Composite powder and method of manufacturing sintered body therefrom |
| 06/15/1999 | CA2183027C Process for the manufacture of nitric oxide |
| 06/15/1999 | CA2145272C Method and apparatus for separating nitrogen-enriched gas |
| 06/09/1999 | EP0663229B1 Method and apparatus for separating nitrogen-rich gas |
| 06/09/1999 | CN2323117Y Member connection device for grille window |
| 06/03/1999 | WO1999009234A3 Electrosynthesis of hydroxylammonium salts and hydroxylamine using a mediator, a catalytic film, methods of making the catalytic film, and electrosynthesis of compounds using the catalytic film |
| 06/02/1999 | EP0919278A1 Process for the catalytic abatement of nitrogen oxides |
| 06/02/1999 | CN1218002A Method and apparatus for production of high purity ultrafine silicon nitride |
| 06/01/1999 | US5908795 Comprises 47.2 to 55.1 wt. % bn, 37.8 to 42.4 wt. % aln plus alon, and 2.5 to 6.2 wt. % c. |
| 06/01/1999 | CA2079749C Silicon tetrahydrazide for purification of dna |
| 05/27/1999 | WO1999025667A2 Method for the conversion of ammonia |
| 05/27/1999 | WO1999025650A1 Ammonia oxidation catalysts |
| 05/27/1999 | WO1999025459A1 Thermally powered oxygen/nitrogen plant incorporating an oxygen selective ion transport membrane |
| 05/27/1999 | CA2310377A1 Thermally powered oxygen/nitrogen plant incorporating an oxygen selective ion transport membrane |
| 05/27/1999 | CA2306780A1 Ammonia oxidation catalysts |
| 05/26/1999 | EP0918039A1 Boron nitride and process for preparing the same |
| 05/25/1999 | US5906805 Stabilized hydroxylamine solutions |
| 05/25/1999 | US5906670 Spraying toward substrate aerosol droplets of metal salt dissolved in volatile solvent, desolventizing and reacting droplets while airborne with gas phase reagent to form a metal or metal compound to be coated onto substrate |
| 05/20/1999 | WO1999024358A1 Process for purifying perfluorinated products |
| 05/20/1999 | CA2306800A1 Process for purifying perfluorinated products |
| 05/19/1999 | EP0916384A1 Solid electrolyte ionic conductor oxygen production with steam purge |
| 05/19/1999 | EP0916383A1 Cryogenic system for producing ultra-high purity nitrogen |
| 05/19/1999 | EP0828688B1 Aluminium nitride granules |
| 05/19/1999 | CN1216750A Low temp. system for producing super pure nitrogen |
| 05/18/1999 | US5905000 Nanostructured ion conducting solid electrolytes |
| 05/18/1999 | US5904823 Methods of purifying hydroxylamine solutions and converting hydroxylamine salts to hydroxylamine |
| 05/18/1999 | CA2254134A1 Solid electrolyte ionic conductor oxygen production with steam purge |
| 05/14/1999 | WO1999023712A1 Transition metal-based ceramic material and articles fabricated therefrom |
| 05/14/1999 | CA2308613A1 Transition metal-based ceramic material and articles fabricated therefrom |
| 05/12/1999 | CN2318212Y Nitrogen generator double-layer adsorption tanks with pressure adjustable controlled valve |