| Patents for C01B 21 - Nitrogen; Compounds thereof (10,781) |
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| 04/02/2003 | EP1200339A4 Methods and systems for the catalytic formation of silicon nitride using a fluidized bed of silica |
| 04/02/2003 | CN1407958A Gas generator and method for generation of low-temperature gas |
| 04/02/2003 | CN1407949A Process for producing nitrogen trifluoride and use thereof |
| 04/02/2003 | CN1406660A Nitrogen production and its device |
| 04/02/2003 | CN1104376C Process for separating low and medium boiling substances from mixture of low, medium and high boiling substances |
| 04/01/2003 | US6541111 Process for producing boron nitride |
| 04/01/2003 | CA2289909C Oxygen generation process and system using single adsorber vessel and single blower |
| 03/27/2003 | US20030057612 Oxidizing surface of organosilicon polymer to make it infusible by exposure to an ionizing radiation, extracting uncrosslinked central portion of fiber with organic solvent to make hollow silicon polymer fiber, firing in inert gas |
| 03/27/2003 | US20030057398 Double salt of ammonium nitrate, gas generating agent containing the same and production method thereof |
| 03/26/2003 | EP1295658A1 Method and apparatus for producing magnetic rare earth alloy powder, method for producing bonded magnet, method for producing rare earth sintering magnet, and method and apparatus for improving purity of inert gas |
| 03/26/2003 | EP1294639A1 Method for producing silicon nitride |
| 03/25/2003 | US6537514 Permeating oxygen through selective ion transport membrane to anode compartment holding carbon containing gas |
| 03/20/2003 | WO2003022738A1 An improved process for manufacturing highly concentrated hydroxylamine |
| 03/20/2003 | US20030052080 Improving bone bonding; acid etch removal of native oxide layer from titanium device and roughening |
| 03/19/2003 | EP1114012A4 Field assisted transformation of chemical and material compositions |
| 03/19/2003 | CN2540397Y Hydrogen nitrate concentration tower sparger |
| 03/19/2003 | CN1404466A Stabilizing agent for hydroxylamine solutions |
| 03/19/2003 | CN1103438C Air separation method andapparatus for producing nitrogen |
| 03/18/2003 | US6534681 Method for preparing highly stabilized hydroxylamine solutions |
| 03/18/2003 | US6534649 Novel material which can be used in separation and purification of gases |
| 03/18/2003 | US6534029 Method and apparatus for producing nitric oxide |
| 03/12/2003 | EP1291068A1 Method and apparatus for producing nitrogen |
| 03/12/2003 | EP1289640A1 Method for optimising a production increase operation |
| 03/12/2003 | EP1086045B1 Method for preparing hydrazine hydrate |
| 03/12/2003 | CN1401560A Array nanotube, mfg. method and use thereof |
| 03/12/2003 | CN1401558A Method for preparing AIN nanowire and its array |
| 03/11/2003 | US6531704 Nanotechnology for engineering the performance of substances |
| 03/11/2003 | US6531108 Reacting hydroxylammonium sulfate with an alkali, to obtain an aqueous reaction solution or slurry containing free hydroxylamine and dissolved or partially precipitated sulfates |
| 03/11/2003 | US6531105 Contacting feed gas stream with a primary metal oxide in a reaction zone of a reactor vessel at conditions effective to convert carbon monoxide to carbon dioxide |
| 03/06/2003 | WO2003018473A1 Silicon carbonitride with spinel structure |
| 03/06/2003 | WO2003018189A1 Adsorbent for separating nitrogen from mixed gas of oxygen and nitrogen |
| 03/06/2003 | US20030044338 Mixture containing inert gases; cycles of reducing metal oxides to metal, oxidation of metal |
| 03/05/2003 | CN1400336A Pyrolyzing borium nitride crucible and method |
| 03/05/2003 | CN1400161A Industrial sodium nitrite new product and its preparation method |
| 03/05/2003 | CN1102531C Process for producing aqueous solutions of free hydroxylamine |
| 03/04/2003 | US6528031 Method for preparing noble metal-supported zeolite catalyst for catalytic reduction of nitrogen oxide |
| 03/04/2003 | US6527830 Dual recovery of a more readily adsorbable component, such as nitrogen, and a less readily adsorbable component, such as oxygen |
| 02/27/2003 | WO2003015888A2 Method of platinum particles recovery from reaction gas in the process of nitric acid production and granular composite material for recovery of such particles |
| 02/26/2003 | EP1285691A1 Selective adsorbent for nitrogen and method for separating air using the same |
| 02/26/2003 | EP1285100A1 Non-evaporable getter alloys |
| 02/26/2003 | EP1284928A1 Method for producing concentrated nitric acid and installation for carrying out a method of this type |
| 02/26/2003 | EP1284927A1 Method and device for the reduction of nitrogen protoxide |
| 02/26/2003 | EP0785818B1 Multiple stage semi-permeable membrane gas separation process |
| 02/26/2003 | CN1398790A Rod-like polycrystal GaN and its two-step prepn process |
| 02/25/2003 | US6524545 Treating aqueous hydroxylamine solution containing metal ion impurities with anion exchanger in hydroxyl form, treating solution with acidic cation exchanger, adding aqueous solution of stabilizer pretreated with cation exchanger |
| 02/25/2003 | US6524372 Separation and purification of gases; 1,4,8,11-Tetrakis(3-(triethoxysilyl)propyl)-1,4,8,11 -tetraazacyclotetradecane |
| 02/20/2003 | WO2003013845A1 A high solids hbn slurry hbn paste spherical hbn powder, and methods of making and using them |
| 02/19/2003 | EP0891949B1 Magnetic molecular mixture |
| 02/19/2003 | CN1398196A Catalyst for decomposing N2O, its use and method for prodn. thereof |
| 02/19/2003 | CN1397487A Phase transfer process and system for preparing silicon nitride powder in batches by gas-phase chemical plasma method |
| 02/19/2003 | CN1397486A B 0.4-0.6 C 0.1-0.3 N 0.1-0.3 compound with random graphite structure and its chemically preparing process |
| 02/18/2003 | US6521192 Mixtures of scavangers and transition metals, alloys and/or oxides in enclosures having inlets and outlets, used for purification of gases; reuse |
| 02/18/2003 | US6521014 Efficient nitrogen absorber; alloy of zirconium, vanadium,iron, manganese and rare earth element |
| 02/16/2003 | CA2355396A1 Barrier discharge conversion of so2 and nox to acids |
| 02/13/2003 | WO2003011753A1 Method for the filtration of an aqueous reaction mixture arising in the production of hydroxylamine |
| 02/13/2003 | WO2003011448A1 Catalyst or sorbent beds |
| 02/13/2003 | CA2454933A1 Catalyst or sorbent beds |
| 02/12/2003 | EP1150765B1 Catalyst support |
| 02/12/2003 | CN1396962A Process for refining silver bullion with gold separation |
| 02/12/2003 | CN1396111A Process for preparing nano cubic niobium nitride powder |
| 02/12/2003 | CN1396003A Process for preparing nano cubic boron nitride |
| 02/11/2003 | US6517798 Methyl ethyl ketone azine is hydrolyzed to obtain hydrazine hydrate at the bottom and methyl ethyl ketone at the top; heterocycles of the pyrazoline family are bled off to prevent coloration of the hydrazine hydrate |
| 02/11/2003 | US6517797 Process for separation of NOx from N2O in a mixture |
| 02/11/2003 | US6517741 Red phosphor and an oxide-nitride inorganic pigment |
| 02/06/2003 | WO2003010089A1 Method for obtaining an ammonium carbamate solution from a gas mixture containing nh3, h2o and co2 |
| 02/06/2003 | WO2002009852A3 System and process for removal of pollutants from a gas stream |
| 02/06/2003 | US20030026752 Dedicatory clause |
| 02/06/2003 | US20030026751 Stabilizing agent for hydroxylamine solutions |
| 02/06/2003 | CA2454168A1 Method for obtaining an ammonium carbamate solution from a gas mixture containing nh3, h2o and co2 |
| 02/05/2003 | CN1395542A Removal of nitrogen monoxide in nitric acid production |
| 02/05/2003 | CN1395502A Method for removal of NOx and N2O from residual gas in nitric acid production |
| 02/05/2003 | CN1100605C Carbonaceous adsorbent, process for producing same, and method and apparatus for gas separation |
| 02/04/2003 | US6515846 Metal nitride with metal oxide film interface; reduced temperature bias and ignition failure; nonflammable |
| 01/30/2003 | WO2003008186A1 Insulating and functionalizing fine metal-containing particles with comformal ultra-thin films |
| 01/29/2003 | EP1278701A2 Highly delaminated hexagonal boron nitride powders, process for making, and uses thereof |
| 01/29/2003 | CN1393395A Pipeline oxidization process for hydrazine hydrate |
| 01/28/2003 | US6511640 Purification of gases |
| 01/23/2003 | WO2003006368A1 Process for the preparation of hydroxylammonium |
| 01/23/2003 | US20030017098 Reacting fluorine gas with ammonia gas in a gaseous phase, wherein the reaction is performed at 80 degrees C. or less in the presence of a diluting gas; used as an etching gas and cleaning gas |
| 01/21/2003 | US6508915 Solution containing nitric acid; absorbing the nitric acid mist contained in the condensed gas; sulfuric acid; semiconductors |
| 01/16/2003 | WO2003004409A1 Method for the production of a salt-free aqueous hydroxylamine solution |
| 01/16/2003 | WO2003004408A1 Method for producing an aqueous hydroxylamine solution devoid of salt |
| 01/16/2003 | WO2003004407A1 Method for producing an aqueous hydroxylamine solution devoid of salt |
| 01/16/2003 | WO2003004406A1 Nitride of barium magnesium aluminate, method for production and use thereof as luminophore |
| 01/16/2003 | US20030012966 SiCN compositions and methods |
| 01/16/2003 | US20030012953 Non-stoichiometric non- equilibrium material, and the material is a nanostructured material;e.g., boron nitrides, tin oxides, titanium carbides and nickel ferrites |
| 01/16/2003 | US20030012952 Nanotechnology for electrochemical and energy devices |
| 01/15/2003 | EP1275616A1 Process for the preparation of hydroxylammonium |
| 01/15/2003 | EP1242165A4 Gas purification system with an integrated hydrogen sorption and filter assembly |
| 01/15/2003 | CN1390627A Variable adsorption process for separating methane/nitrogen gas mixture with large-surface activated carbon |
| 01/15/2003 | CN1098941C Hollow microfiber and process for preparing same |
| 01/15/2003 | CN1098806C Process for preparing nm-class boron nitride tube |
| 01/14/2003 | US6505482 Ultra pure nitrous oxide product having a purity of 99.9998% or higher can be delivered to a point of use. |
| 01/09/2003 | WO2002048031A3 Method for continuously producing hydroxylammonium salts |
| 01/09/2003 | US20030007883 Efficient nitrogen absorber; alloy of zirconium, vanadium,iron, manganese and rare earth element |
| 01/03/2003 | WO2003000618A1 A method of producing a metal-containing single-phase composition. |
| 01/03/2003 | WO2003000400A1 Catalyst or sorbent beds |
| 01/02/2003 | US20030003042 Fluorination of nitrogen-containing compounds with elemental fluorine, wherein fluorination is carried out in anhydrous hydrogen fluoride at a temperature of -20 degrees C. to 0 degrees C. |
| 01/02/2003 | EP1268040A1 METHOD FOR THE REMOVAL OF NO x? AND N 2?O FROM THE RESIDUAL GAS IN NITRIC ACID PRODUCTION |
| 12/27/2002 | WO2002103096A1 Method of making nanotube-based material with enhanced electron field emission properties |