| Patents for C01B 21 - Nitrogen; Compounds thereof (10,781) |
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| 12/10/1998 | DE19723564A1 Gas especially oxygen and/or nitrogen production plant |
| 12/08/1998 | US5847117 Reagent and catalytic process useful for cleaving a protected functional group |
| 12/08/1998 | US5846508 Method for preparing aluminum nitride powders |
| 12/08/1998 | US5846297 Filter material and process for producing No2 -free gases or liquids |
| 12/02/1998 | EP0863843A4 Nitric acid production and recycle |
| 12/02/1998 | CN1200681A Method for removing nitrogen oxides from a gas flow |
| 11/24/1998 | US5840435 Cutting tool |
| 11/24/1998 | US5840098 Membrane generators having high flexibility |
| 11/17/1998 | US5837633 Method for production of aluminum nitride sintered body and aluminum nitride powder |
| 11/17/1998 | US5837630 Gelation of transition metal compound in solution with a hydrolyzing reactant, desolventizing, then converting portion of gel to amorphous nitride, carbide, boride, silicide |
| 11/17/1998 | US5837214 Method for producing cubic boron nitride |
| 11/17/1998 | US5837158 Blend of addition polymer, catalyst and diluent |
| 11/17/1998 | US5837125 Supplying oxygen-consuming gas to permeate zone to lower oxygen partial pressure so that oxygen of higher partial pressure contained in feed zone is driven across permselective separation membrane |
| 11/17/1998 | US5837107 Process for production of aqueous solutions of free hydroxylamine |
| 11/17/1998 | US5837032 Polymer separators for gases |
| 11/12/1998 | WO1998050141A1 Method of preparation of sealed gas chambers |
| 11/12/1998 | CA2288714A1 Method of preparation of sealed gas chambers |
| 11/11/1998 | EP0852575A4 Silicon nitride nanowhiskers and method of making same |
| 11/11/1998 | CN1198686A Process for preparing a hydrogenation catalyst |
| 11/11/1998 | CN1198362A Oxygen selective sorbent |
| 11/10/1998 | US5832746 Pressurizing feed gas, eliminating moisture and carbon dioxide, cooling, passing through adsorption column, rectification |
| 11/05/1998 | WO1998049099A1 Stabilized hydroxylamine solutions |
| 11/04/1998 | EP0875488A1 Method to produce transition metal carbides and/or carbonitrides, their use and transition metal xerogels |
| 11/04/1998 | EP0874879A1 Rare earth borate and its precursor, preparation processes and use of borate as luminophore |
| 10/28/1998 | CN1040461C Submicron carbonitride powders and process for their production and their use |
| 10/27/1998 | US5827420 Establishing flow of electric current between electrodes in copper ion containing solution to plate copper onto electrode, the copper reacting with nitric acid to form nitric oxide |
| 10/27/1998 | US5827354 Container for carbon molecular-sieve material |
| 10/27/1998 | CA2043491C Air separation pressure swing adsorption process |
| 10/21/1998 | EP0871587A1 Low compressibility carbon nitrides |
| 10/21/1998 | CN1196273A Method for production of nitrogen using oxygen selective adsorbents |
| 10/20/1998 | US5824617 Porous and nonporous substrates and a polycrystalline layerof zeolit; immersing substrate into synthesis mixture,autoclaving, washing; separation of dyes from alcohol and oligomers from hexane |
| 10/14/1998 | EP0870532A2 Methods of purifying hydroxylamine solutions and converting hydroxylamine salts to hydroxylamine |
| 10/13/1998 | US5820839 Process for the decomposition of hydrogen cyanide, ammonia, or mixtures thereof in the gas phase |
| 10/07/1998 | EP0868399A1 Process for producing aqueous solutions of free hydroxylamine |
| 10/07/1998 | EP0868398A1 Process for separating medium boiling substances from a mixture of low, medium and high boiling substances |
| 10/07/1998 | EP0868397A1 Stabilised hydroxylamine solutions |
| 10/07/1998 | CN1194960A Turbostratic boron nitride powder and method for producing same |
| 10/06/1998 | US5817592 Process for the preparation of a hydrogenation catalyst |
| 10/06/1998 | US5817285 Continuous preparation of silicon nitride powder |
| 09/30/1998 | EP0867029A1 Method for recovering nitrate ions as nitric acid from nuclear industry effluents |
| 09/30/1998 | EP0866885A1 Nanostructured feeds for thermal spray |
| 09/29/1998 | US5814573 Heating mixture comprising particles of aluminosilicate material and particles of carbonaceous material in nitrogen in reaction vessel while maintained in continuous motion |
| 09/29/1998 | US5814290 Silicon nitride nanowhiskers and method of making same |
| 09/29/1998 | CA2034214C Nitride products and method and apparatus for producing nitride products |
| 09/29/1998 | CA2020508C Nitride products and method and apparatus for their production |
| 09/24/1998 | DE19735397A1 Reactor for the adsorptive separation of a gas mixture |
| 09/23/1998 | CN1039897C Production of material containing boracium nitride |
| 09/23/1998 | CN1039883C Multistage cascade-sweep process for membrane L'Exploitation des procedes georges claude gas separation |
| 09/17/1998 | WO1998040160A1 Ammonia oxidation catalyzer |
| 09/16/1998 | EP0863843A1 Nitric acid production and recycle |
| 09/15/1998 | US5808150 Adding poly(n-acetic acid-substituted) polyamino(cyclo)alkyl compounds or salts; photoresist stripping |
| 09/09/1998 | EP0862494A1 Process for preparing a hydrogenation catalyst |
| 09/09/1998 | CN1039699C Process for supplying nitrogen to at least two user stations needing different nitrogen purity |
| 09/03/1998 | WO1998038141A1 Method for making submicrometer transition metal carbonitrides |
| 09/03/1998 | DE19735389C1 Chemical reactor for adsorptive separation processes has upright cylindrical mantle |
| 09/01/1998 | US5800788 Reactor container, plant and process for the production of sulfuric acid |
| 08/27/1998 | WO1998037074A1 Process for preparation of 2-mercaptothiazole |
| 08/27/1998 | DE19704242C1 Carbonitrid-Pulver, Verfahren zu ihrer Herstellung sowie deren Verwendung Carbonitride powders, processes for their preparation and their use |
| 08/26/1998 | EP0859659A1 Method of removing nitrogen oxides from a gas flow |
| 08/26/1998 | EP0581795B1 Gas generator |
| 08/20/1998 | WO1998035921A1 Novel carbodiimide polymers as precursors for c/n and b/c/n materials |
| 08/19/1998 | CN2288173Y Nitrogen oxide standard solution generator |
| 08/19/1998 | CN1190946A Method for eliminating impurities contained in a gas compound |
| 08/18/1998 | CA1340001C Process for separating components of a gas stream |
| 08/13/1998 | WO1998034874A1 Carbonitride powder, method for producing same, and use thereof |
| 08/12/1998 | EP0699170B1 Solvent transfer process for dinitrogen pentoxide |
| 08/11/1998 | US5792439 Reduction of nitrate ions in acid medium using palladium and platinum metal particles as catalyst |
| 08/05/1998 | CN1189452A Novel method for prodn. of nitrate |
| 08/04/1998 | US5788946 Passing aqueous solution through cation exchange resin, then anion exchange resin |
| 08/04/1998 | US5788738 High temperature vapors quenched by adiabatic expansion |
| 07/29/1998 | EP0670823B1 Method of preparing hydrazine nitroform |
| 07/28/1998 | US5784898 Process and device for the preparation of a cry ogenic fluid in the high purity liquid state |
| 07/22/1998 | EP0853976A1 Oxygen selective sorbents |
| 07/22/1998 | EP0853968A1 Method for production of nitrogen using oxygen selective adsorbents |
| 07/22/1998 | EP0853592A1 Process and device for producing nitrogen from air |
| 07/22/1998 | EP0779881B1 Boron nitride |
| 07/22/1998 | EP0729394B1 Making quantum dot particles of uniform size |
| 07/22/1998 | EP0542871B1 Process for improving the physical and catalytic properties of fluid cracking catalysts |
| 07/21/1998 | US5783509 Process for preparing a refractory powder from spent contact masses issuing from the production of silanes, and to refactory products obtained therefrom |
| 07/21/1998 | US5783161 Stabilized hyroxylamine solutions |
| 07/15/1998 | EP0853065A2 Processing of ceramic materials |
| 07/15/1998 | EP0852575A1 Silicon nitride nanowhiskers and method of making same |
| 07/15/1998 | EP0689619A4 Apparatus and method for delivering reagents in vapor form to a cvd reactor |
| 07/15/1998 | CA2226591A1 Method for production of nitrogen using oxygen selective adsorbents |
| 07/14/1998 | US5780769 Explosives comprising a prophosphatrane stabilizers |
| 07/14/1998 | US5780767 Metal azide, oxidizer, ceramic whisker or fiber |
| 07/14/1998 | US5779848 Corrosion-resistant aluminum nitride coating for a semiconductor chamber window |
| 07/14/1998 | US5779770 Magnetic field type oxygen enriched air producing apparatus |
| 07/11/1998 | CA2226134A1 Processing of ceramic materials |
| 07/09/1998 | WO1998029355A1 Textile preforms sheathed in a boron nitride coating, composites incorporating them and their preparation |
| 07/09/1998 | WO1998029334A1 Process for preparing aluminum nitride |
| 07/09/1998 | WO1998029182A1 High frequency pressure swing adsorption |
| 07/07/1998 | US5777163 Preparation of hydroxylamines from ammonia or the corresponding amines, hydrogen and oxygen |
| 07/07/1998 | US5776264 Method for producing amorphous based metals |
| 07/02/1998 | WO1998028073A1 Ammonia oxidation catalyst |
| 07/02/1998 | DE19706028C1 Neue Carbodiimid-Polymere als Vorstufen für C/N- und B/C/N-Werkstoffe New carbodiimide polymers as precursors for C / N and W / C / N materials |
| 06/25/1998 | WO1998019351A3 Nanostructured ion conducting solid electrolytes |
| 06/24/1998 | EP0848981A1 Pressure swing adsorption plant to separate oxygen from the air and process to operate the same |
| 06/24/1998 | CN1185353A Catalyst for purifying nitrogen-contained gas to remove carbon monoxide and course thereof |
| 06/23/1998 | CA2001304C Method for purifying nitrogen trifluoride gas |