Patents
Patents for C01B 21 - Nitrogen; Compounds thereof (10,781)
12/2002
12/27/2002WO2002086451A3 Organoboron route and process for preparation of boron nitride
12/27/2002CA2450261A1 Method of making nanotube-based material with enhanced electron field emission properties
12/19/2002US20020193040 Method of making nanotube-based material with enhanced electron field emission properties
12/19/2002DE10127768A1 Nitrogen abstracted from air by molecular sieve of steam-treated coconut shell subsequently treated with hydrocarbons
12/18/2002CN2526312Y Purifying device for removing oxygen and water from nitrogen
12/17/2002US6495112 Method and apparatus for removing oxygen from natural gas
12/12/2002WO2002098842A1 Method for making 2,2,4,4-tetramethyl-3-pentanone oxime and hydroxylammonium salts
12/12/2002WO2002098555A1 Method for the production of carbon molecular sieves for extracting nitrogen from the air
12/12/2002WO2002076906A3 Method for producing cubic boron nitride and product obtained through the method
12/12/2002WO2002072244A3 Method of reducing the n2o content of gases and selected catalysts
12/12/2002US20020188158 Method for preparing lithium amide
12/12/2002US20020188052 Barium ferrite filler; magnetic tapes
12/12/2002US20020187387 Nano-ionic products and devices
12/11/2002CN1384054A Reaction phase change process of producing nano material continuously
12/11/2002CN1384049A Preparation of nitrogen trifluoride
12/10/2002CA2068612C Method of producing alkali metal azides
12/05/2002WO2002096799A2 Silicon subnitride method for production and use of said subnitride
12/05/2002WO2002033334A3 Method and installation for purifying and recycling helium and use in optical fibre manufacture
12/05/2002WO2001020953A9 Method and apparatus for producing bulk quantities of nano-sized materials by electrothermal gun synthesis
12/05/2002US20020182507 Nonaqueous electrolyte lithium-transition metal-containing composite nitride that may also contain other alkali metal or alkaline earth metal metal
12/05/2002US20020182394 Pyrolytic boron nitride crucible and method
12/05/2002US20020182136 Method for preparing manganese-based nitride having nearly zero temperature coefficient of resistivity
12/05/2002DE10125629A1 Siliciumsubnitrid Siliciumsubnitrid
12/04/2002EP1261750A1 Process for refining silver bullion with gold separation
12/04/2002EP1261554A1 MATERIAL FOR SiON-OPTICAL WAVEGUIDES AND METHOD FOR FABRICATING SUCH WAVEGUIDES
12/04/2002EP1261548A1 Method for producing nitric acid
12/04/2002EP1261547A1 Removal of laughing gas in nitric acid production
12/04/2002CN1382622A BCN crystal with orthogonal structure and its preparing process
12/04/2002CN1095398C 氨氧化催化剂 Ammonia oxidation catalyst
12/03/2002US6489264 Ammonia oxidation catalyst
11/2002
11/28/2002WO2002057182A3 Ceramic materials in powder form and method for their preparation
11/28/2002US20020176987 Ink comprising: a non-stoichiometric non-equilibrium nanostructured material; device such as electronics using such a material
11/27/2002EP1260357A2 Pyrolytic boron nitride crucible and method
11/27/2002EP1019319B1 Synthesis method for solution with high grade chloramine
11/26/2002US6485700 Process for producing free hydroxylamine aqueous solution
11/21/2002WO2002092504A1 Method for producing nitrogen fluoride
11/21/2002WO2002092503A1 Spherical boron nitride particles and method for preparing them
11/21/2002US20020172826 Nanoscale catalyst compositions from complex and non-stoichiometric compositions
11/21/2002US20020172635 Generating aerosol of particles of boron nitride suspended in aerosol gas; generating plasma comprising nitrogen; directing aerosol into plasma hot zone to melt boron nitride; allowing molten particles to exit hot zone to cool and solidify
11/21/2002US20020170593 Non-stoichiometric non- equilibrium material, and the material is a nanostructured material.
11/20/2002EP1258279A2 Membrane apparatus for the production of gaseous nitrogen
11/20/2002EP1257525A1 Stabilizing agent for hydroxylamine solutions
11/20/2002EP1257500A1 Process for the separation of a hydroxylammonium salt solution
11/20/2002EP1257347A1 Catalyst for decomposing n 2?o, its use and method for the production thereof
11/20/2002CN1380907A Non-evaporable getter alloys
11/20/2002CN1380874A Method and device for reduction of nitrogen protoxide
11/20/2002CN1380247A Preparation method of vanadium nitride nano powder body
11/19/2002US6482384 Method for synthesis of aluminum nitride
11/19/2002US6482383 Reacting ammonia, hydrogen peroxide and methyl ethyl ketone in a working solution to form an azine and methyl ethyl ketone oxime, separating, recycling
11/14/2002WO2002090256A2 Process for the preparation of amonia oxidation
11/14/2002WO2002090255A1 Method for energy generation by production and reaction of aluminium nitride
11/14/2002WO2002090254A1 Method for the production of silicon nitride
11/14/2002US20020168522 Nanotechnology for electronic and opto-electronic devices
11/14/2002US20020168302 For removal of pollutants, such as oxides of sulfur, oxides of nitrogen, fly ash, mercury compounds, and elemental mercury from gases generated from the burning of fossil fuels
11/14/2002CA2446269A1 Process for the preparation of amonia oxidation
11/13/2002EP1256546A1 Process for preparing nitrogen trifluoride
11/12/2002CA2202239C Liquid absorbent solutions for separating nitrogen from natural gas
11/12/2002CA2018564C 4,5,5a,6-tetrahydro-3h-isoxazolo¬5,4,3-kl|acridines derivatives, a process for their preparation and their use as medicaments
11/07/2002WO2002087733A1 Method for reducing the content of n2o and nox in gases
11/07/2002WO2002062466A3 Three-dimensional catalyst gauzes knitted in two or more layers
11/07/2002US20020164482 Nanotechnology for biomedical products
11/07/2002US20020164475 Silicon nitride powder, silicon nitride sintered body, sintered silicon nitride substrate, and circuit board and thermoelectric module comprising such sintered silicon nitride substrate
11/07/2002US20020162738 Methods of producing ultra -low resistivity tantalum films.
11/07/2002DE10121476A1 Verfahren zur Herstellung von Siliciumnitrid A process for the production of silicon nitride
11/07/2002DE10121475A1 Verfahren zur Energieerzeugung A method for generating energy
10/2002
10/31/2002WO2002086451A2 Organoboron route and process for preparation of boron nitride
10/31/2002US20020160191 Low maturing temperature porcelain compositions useful for the fabrication of dental restorations.
10/31/2002US20020160190 Nanotechnology for magnetic components
10/31/2002US20020159937 Method and apparatus for removing oxygen from natural gas
10/31/2002US20020157952 Adding sulfuric acid to an acid treatment solution which contains a non-alkaline metal ions to produce sulfate, and recovering the regenerated acid treatment solution by separating the sulfate (aluminum sulfate)
10/30/2002CN2518842Y Integrated miniature machine for preparation of nitrogen
10/30/2002CN1376634A Process for preparing nano titanium chromium nitride oxide powder
10/24/2002WO2002083554A2 Method for the production of highly pure nitric acid
10/24/2002US20020155219 From titanium chloride and ammonia; aftertreatment with hydrogen gas
10/24/2002US20020155052 Aerosolizing organoboron precursor; introducing carrier gas into chamber to forming a combined gas stream; sweeping into heated furnace; injecting nitriding agent to form powder of boron-nitrogen-oxygen-carbon-hydrogen; collecting
10/24/2002DE10118383A1 Production of high-purity nitric acid comprises distilling concentrated nitric acid and/or crude nitric acid
10/23/2002EP1251101A2 Nitrogen trifluoride (NF3)
10/23/2002EP1250286A1 Method for concentrating aqueous hydrazine solution and device therefor
10/23/2002EP1144306B1 Method for making a hydrazine by hydrolysing an azine
10/23/2002CN1376135A Basic metal nitrate, method for producing the same and gas-generating agent composition
10/22/2002US6468366 Aluminum alloy or composite with such as magnesium wherein the concentration of aluminum is higher at surface nitrided portion; corrosion resistance; wiring for semiconductors and liquid crystal panels
10/17/2002US20020150516 System and process for removal of pollutants from a gas stream
10/16/2002EP1249881A2 Negative electrode material for nonaqueous electrolyte secondary battery and method for producing the same
10/15/2002US6464955 Contacting oxygen conducting ceramic with a feed gas comprising component selected from steam, carbon dioxide, sulfur oxides, nitrogen oxides and mixtures in adsorption zone; removing oxygen
10/15/2002US6464906 Method of manufacturing spherical bodies by rotation, spherical bodies made by the method and a powder composition for use in the method
10/10/2002WO2002080256A1 Film forming method and film forming device
10/10/2002US20020144887 Process for the production of anhydrous hydrazine and device for its implementation
10/09/2002CN1092139C Cubic phase C3N4 and preparing method thereof
10/08/2002US6461990 Cubic boron nitride composite particle
10/03/2002WO2002076906A2 Method for producing cubic boron nitride and product obtained through the method
10/02/2002EP1245535A2 An aqueous solution containing hydroxylamine salt and storing method thereof
10/02/2002DE10112444A1 Reducing the nitrogen oxide and nitrous oxide content of a gas comprises adding a gaseous reducing agent and contacting the gas with an iron-loaded zeolite catalyst
10/02/2002DE10112396A1 Verfahren zur Verringerung des N¶2¶O-Gehalts in Gasen und ausgewählte Katalysatoren Process for reducing the N¶2¶O content in gases and selected catalysts
10/02/2002DE10105624A1 Knitted catalyst gauze used in heterogeneously catalyzed gas reactions catalyzed by noble metals, such as oxidation of ammonia with atmospheric oxygen for producing nitric acid, comprises weft threads
10/02/2002CN1371861A Non-chemical measured lithium magnesium nitride and preparation process and application thereof
10/02/2002CN1091763C Method for preventing hydroxylamine from decomposing in inorganic solution for prparing caprolactam by using hydroxylamine phosphate oximation method
10/02/2002CN1091656C Grid catalyst preparation process and use thereof
10/02/2002CN1091635C Purifying method for inactive gas recovered from solid condensation reactor of paraprex
10/02/2002CN1091633C Reactive purge for solid electrolyte membrane gas separation
10/01/2002US6458255 Ultra-low resistivity tantalum films and methods for their deposition
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