| Patents for C01B 21 - Nitrogen; Compounds thereof (10,781) |
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| 05/11/1999 | US5902761 Ceramic granules, process for preparing the same, and process for producing sintered product of silicon nitride |
| 05/11/1999 | US5902561 First purification zone containing particulate material including elemental nickel, second purification zone containing getter material, wherein gas is contacted with nickel containing material, then contacted with getter |
| 05/11/1999 | US5902498 Methods of joining metal components and resulting articles particularly automotive torque converter assemblies |
| 05/06/1999 | WO1999021795A1 Method of producing adn prills |
| 05/06/1999 | WO1999021794A1 Method of producing adn prills suitable for use in a polymer system |
| 05/06/1999 | WO1999021793A1 Method of producing prills of ammonium dinitramide (adn) |
| 05/06/1999 | EP0913184A1 Elevated temperature adsorption process |
| 05/05/1999 | CN1216006A Method of mfg. hydrogenation catalyst |
| 05/04/1999 | CA2149835C Process for the purification of nitric oxide |
| 05/04/1999 | CA2062708C Method and apparatus for regenerating gas used in carbon dioxide laser generator |
| 04/28/1999 | EP0910468A1 Electrically assisted synthesis of particles and films with precisely controlled characteristics |
| 04/28/1999 | EP0910457A1 Method for the adsorptive separation of air |
| 04/28/1999 | EP0778812B1 Process for producing ceramic powders, especially titanium dioxide useful as a photocatalyst |
| 04/28/1999 | CN1043139C Process for vaporizing hydrazine hydrate solution |
| 04/22/1999 | WO1999019408A1 Oxinitrided composition based on an alkaline earth and tantalum or on an alkaline earth and niobium, preparation methods and use as dyeing pigment |
| 04/20/1999 | US5895769 In-situ crystallized zeolite containing composition (LAI-ISC) |
| 04/15/1999 | WO1999018032A1 Method and apparatus for vapor phase manufacture of nanoparticles |
| 04/14/1999 | EP0907402A1 Method of removing, from a stream of gas, fluorinated compounds which contribute to destruction of the ozone layer and/or changes in climate, and use of the method |
| 04/14/1999 | CN1213643A Process for removing hydrogen and/or carbon monoxide from air stream |
| 04/08/1999 | WO1999016707A1 Synthesis method for solution with high grade chloramine |
| 04/08/1999 | DE19742319A1 Method of Compressed and liquefied nitrogen as a propulsion medium for vehicles |
| 04/08/1999 | CA2303135A1 High grade chloramine synthesis |
| 04/07/1999 | EP0906779A1 Process and apparatus for eliminating carbon monoxide and/or hydrogen from an air stream |
| 04/06/1999 | US5891220 Especially hopcalite |
| 03/31/1999 | CN1212637A Grid catalyst based on titanium zeolite or vanadium zeolite and on inert reticulated fabric for use in catalysis of oxidation reaction |
| 03/31/1999 | CN1212173A Reactor for chemical reaction, especially in adsorption separation process |
| 03/30/1999 | CA2140181C Adsorptive separation of nitrogen from other gases |
| 03/30/1999 | CA2139604C Ion transport membranes with catalyzed dense layer |
| 03/30/1999 | CA2139603C Ion transport membranes with catalyzed mixed conducting porous layer |
| 03/24/1999 | CN1211468A Improved binding type zeolite adsorbent, its producing process and its application in non-deep-cooling separation of industrial gas |
| 03/24/1999 | CN1042654C Adsorptive palladium-alloy net |
| 03/23/1999 | US5885331 Process for the adsorption of nitrogen from gas mixtures by means of pressure swing adsorption with zeolites |
| 03/18/1999 | WO1999012850A1 PROCESS FOR THE PROTECTION OF AlN POWDER AGAINST HYDROLYSIS |
| 03/17/1999 | CN1211273A Rare earth borate and its precursor, preparation processes and use of borate as lumcinophore |
| 03/16/1999 | US5882619 Titanium or zirconium halides, alkoxides or haloalkoxides; reducing nitrogen monoxide to form hydroxylammonium salts; regenerating platinium catalyst |
| 03/16/1999 | US5882385 Plant for treating at least one fluid and use for the separation of at least one constituent of a gas mixture |
| 03/11/1999 | WO1999011573A1 Method for fabricating silicon oxynitride |
| 03/11/1999 | CA2297329A1 Method for fabricating silicon oxynitride |
| 03/09/1999 | US5879583 Process for producing high-porosity non-evaporable getter materials and materials thus obtained |
| 03/04/1999 | WO1999010121A1 Grain growth inhibitor for superfine materials |
| 03/04/1999 | WO1999010120A1 Grain growth inhibitor for nanostructured materials |
| 03/02/1999 | US5876682 Nanostructured ceramic nitride powders and a method of making the same |
| 02/25/1999 | WO1999009234A2 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 |
| 02/24/1999 | EP0897746A1 Reactor for chemical reactions, in particular for adsorption separation processes |
| 02/24/1999 | CN1209108A Process for producing aqueous solutions of free hydroxylamine |
| 02/24/1999 | CN1209107A Stabilised hydroxylamine solutions |
| 02/23/1999 | US5874007 Flowing inert gas liquefied at cryogenic temperatures through bed of adsorbent particles comprising platinum, palladium, rhodium, or iridium supported on alumina, silica, titania, or zeolite |
| 02/23/1999 | US5873928 Multiple stage semi-permeable membrane process and apparatus for gas separation |
| 02/18/1999 | WO1999007638A1 Method for producing nitric acid and device for carrying out said method |
| 02/18/1999 | WO1999007637A1 Method for producing an aqueous solution of free hydroxylamine |
| 02/18/1999 | CA2300445A1 Method for producing nitric acid and device for carrying out said method |
| 02/17/1999 | CN2307780Y Jet oxygen generator |
| 02/16/1999 | US5872295 Passing a solution of hydroxylamine through at least one strong acid ion exchange bed which has been pretreated with dilute hydrochloric acid and then through at least one strong base anion exchange resin bed which has been pretreated or |
| 02/16/1999 | US5871703 Oxidation by barrier, pulse, corona or electron beam electrical discharge, collecting acids and particles by electrostatic precipitation, separation of acids from particles |
| 02/11/1999 | DE19733681A1 Verfahren zur Herstellung einer wäßrigen Lösung von freiem Hydroxylamin A process for preparing an aqueous solution of free hydroxylamine |
| 02/10/1999 | EP0895966A1 Zincoaluminosilicates of the FAU structure |
| 02/10/1999 | EP0895964A1 Compact deoxo system |
| 02/10/1999 | CN1207718A Low compressibility carbon nitrides |
| 02/10/1999 | CN1207717A Nitric acid production and recycle |
| 02/03/1999 | EP0894522A1 Process and apparatus for the production of ultra-pure inert gas |
| 02/02/1999 | US5866496 Cracking catalyst and process for preparing same |
| 02/02/1999 | US5866059 Polycrystalline BCN substance and method of producing same |
| 01/28/1999 | WO1999004073A1 Hollow microfiber and process for preparing the same |
| 01/28/1999 | WO1999003780A1 Purification of hydroxylamine |
| 01/28/1999 | WO1999003627A1 A composition comprising a metal salt and metal powder therefrom by the calcining thereof |
| 01/28/1999 | CA2296082A1 A composition comprising a metal salt and metal powder therefrom by the calcining thereof |
| 01/27/1999 | EP0893157A1 Bounded zeolitic adsorbent, method for its production and its use for the non cryogenic separation of process gases |
| 01/27/1999 | EP0892676A1 Method of manufacturing a hydrogenation catalyst |
| 01/26/1999 | US5863462 SiCN gels as precursors of non-oxidic silicon ceramics |
| 01/20/1999 | EP0891949A1 Magnetic molecular mixture |
| 01/20/1999 | EP0891296A1 Modified composite silicon nitride powders for thermal coating technologies and process for their production |
| 01/20/1999 | CN1205677A Process for separating medium boiling substances from mixture of low, medium and high boiling substances |
| 01/20/1999 | CN1205305A Appts. and method of secondary absorption of air for preparing rich N |
| 01/19/1999 | US5861132 Vapor phase flame process for making ceramic particles using a corona discharge electric field |
| 01/14/1999 | WO1999001408A1 Thermally-stabilized prilled ammonium dinitramide particles, and process for making the same |
| 01/14/1999 | WO1999001378A1 Method for preparing mesomorphic polyborazylene, mesomorphic polyborazylene, use as bn precursor |
| 01/14/1999 | DE19727743A1 Absorption assembly to separate e.g. atmospheric oxygen and nitrogen |
| 01/12/1999 | CA2131475C Process using alumina carbonitriding for the continuous preparation of aluminium nitride |
| 01/07/1999 | WO1999000325A1 Carbonaceous particles and carbonaceous fibers both coated with boron nitride, and lithium secondary cells produced by using the same as negative active material |
| 01/07/1999 | EP0888807A1 Process and device for the treatment of gas streams |
| 01/07/1999 | DE19726734A1 Nitride ceramic powder or ceramic precursor production |
| 01/07/1999 | DE19726733A1 Metal or metalloid nitride powder production |
| 12/30/1998 | EP0887308A1 Process for preparing aluminum nitride |
| 12/29/1998 | US5854156 Granulated powder for producing silicon nitride sintered body |
| 12/29/1998 | US5854155 Hexagonal system boron nitride powder |
| 12/29/1998 | CA2165366C Cryogenic rectification system for fluorine compound recovery |
| 12/24/1998 | DE19725851A1 Verfahren zur Herstellung hochreiner, wässriger Hydroxylaminlösungen Process for the preparation of high-purity aqueous hydroxylamine |
| 12/23/1998 | WO1998057887A1 Ammonia oxidation |
| 12/23/1998 | WO1998057886A1 Method for producing highly pure aqueous hydroxylamine solutions |
| 12/23/1998 | WO1998057727A1 Gas separation by continuous pressure-swing chromatography |
| 12/22/1998 | US5851943 Ceramic production process |
| 12/22/1998 | US5851680 Boron-doped titanium nitride coatings and coated parts |
| 12/22/1998 | US5851507 Integrated thermal process for the continuous synthesis of nanoscale powders |
| 12/17/1998 | DE19724938A1 Pure, nitrogen dosed or carbon dosed silicon carbide is |
| 12/16/1998 | EP0883439A1 Grid catalyst based on titanium zeolite or vanadium zeolite and on inert reticulated fabrics for use in the catalysis of oxidation reactions |
| 12/15/1998 | US5849980 Low alkaline inverted in-situ crystallized zeolite membrane |
| 12/15/1998 | US5849257 Process for preparation of nitrous oxide |
| 12/15/1998 | US5849242 Boron nitride |
| 12/10/1998 | WO1998055393A1 Method for performing catalytic or non-catalytic processes, with enriched oxygen as one of the reactants |
| 12/10/1998 | WO1998055207A1 Process and plant for the separation of nitrogen and oxygen from gases rich of nitrogen and/or oxygen |