Patents
Sitemap › C01 - Inorganic chemistry › C01B - Non-metallic elements; Compounds thereof › C01B 21 - Nitrogen; Compounds thereof
Patents for C01B 21 - Nitrogen; Compounds thereof (10,781)
01/1982
01/11/1982EP0032912A4 Nitric acid reconstitution.
01/05/1982US4309396 Bubbling with oxygen through water
01/05/1982US4309203 Process for manufacturing boron nitride fiber batts using a spinner
12/1981
12/30/1981EP0042660A2 Process for producing metallic carbonitride
12/29/1981US4308246 Fixation of nitrogen using silicon oxide catalysts
12/29/1981CA1115027A1 Hydroxylamine purification via cation exchange
12/23/1981EP0042159A1 Air fractionation by pressure swing adsorption
12/16/1981EP0041819A2 Removal of nitrous material from nitric acid streams
12/15/1981US4305919 Catalytic combustion and storage of heat energy
12/15/1981US4305735 Method for improving dissolution efficiency in gas-absorption and liquid extraction processes
12/15/1981CA1114133A1 Process for producing aqueous solution of calcium nitrite
12/09/1981EP0041395A1 Cubic boron nitride preparation
12/09/1981EP0041329A2 Process for the selective adsorption of oxygen
12/08/1981CA1113688A1 Process for the preparation of nitrous oxide
12/01/1981US4303787 Process for recovering cyclodextrins
12/01/1981US4303228 Apparatus for heat treating containing air-purged molecular sieves in O.sub. -free N2 atmospheres
12/01/1981CA1113249A1 Azide gas generating composition
11/1981
11/24/1981CA1112848A1 Process for removing so.sub.2 and no.sub.x from gases
11/18/1981EP0040016A1 Zeolite Nu-3
11/17/1981US4301081 Alkali metal complex compounds
11/17/1981US4300820 Containing a vinyl amide mono or copolymer and an addition copolymer
11/11/1981EP0039517A1 Apparatus for treating powdery materials utilizing microwave plasma
11/11/1981EP0039481A1 Process for producing triammonium nitrilotrisulfate
11/03/1981US4298629 Gas plasma of nitrogen-containing gas
10/1981
10/28/1981EP0038632A2 Process for producing carbonitrides of metal
10/27/1981US4297387 By vapor deposition using ammonia gas and an alloy containing boron and aluminum
10/27/1981US4297331 Catalysis
10/21/1981EP0015260B1 Complexes of manganese with substituted phosphines, their preparation and use for sorption of gases and adducts thus obtained
10/20/1981US4296086 Monitoring process and apparatus
10/20/1981CA1110830A1 Process for removing nitrogen oxides from gaseous mixtures
10/13/1981US4294813 Process for forming calcium nitrite
10/01/1981WO1981002734A1 Process for manufacturing boron nitride fiber mats using a needler
10/01/1981WO1981002733A1 Process for manufacturing boron nitride fiber batts using a spinner
09/1981
09/29/1981CA1109636A1 Metal salt catalyzed polymerization of (npcl.sub.2) oligomers
09/15/1981US4289737 Reduced temperature of combustion of methane to carbon dioxide and water using alloy of rhodium and platinum; air pollution control
09/01/1981US4287187 Method for treating tumors with cis-diammineplatinum(II) orthophosphate complexes
09/01/1981US4287040 Production of nitric oxides
08/1981
08/25/1981US4286108 Process for preparing hydrazines
08/25/1981US4285924 Separation of acids
08/25/1981US4285923 By-product inhibition with nitrogen oxide gases
08/05/1981EP0032912A1 Nitric acid reconstitution
08/04/1981CA1106140A1 Iridium compound and preparation thereof
07/1981
07/28/1981US4280989 Reaction of ammonia and silica in hydrocarbon gas and hydrogen
07/28/1981CA1105673A1 Purification of crude chlorophosphazene compounds by treatment with water
07/21/1981US4279723 Polymerization of inorganic element-containing monomers using plasma
07/21/1981US4279689 Process for producing super hard-highly pure silicon nitrides
07/21/1981CA1105239A1 Process for the removal of dinitrogen difluoride from nitrogen trifluoride
07/14/1981CA1104794A1 Purification of nitrogen trifluoride atmosphere
06/1981
06/30/1981US4276343 Polymers from phosphorus chloride, ammonia, water; fireproofing regenerated cellulose knit goods
06/30/1981US4276277 Manufacture of concentrated nitric acid
06/30/1981US4276276 Process for nitrite production
06/30/1981US4276084 Leaching with cupric chloride
06/30/1981CA1104151A1 Hydrazinium phosphites (fungicides)
06/16/1981US4273754 Process for producing aqueous solution of calcium nitrite
06/10/1981EP0029879A2 Process and apparatus for the thermal recovery of metallic carbides or metals
06/09/1981US4272382 Process for separating cyclic phosphazene oligomers
06/09/1981US4272336 Oxidation, oxidation catalysts
06/09/1981US4271822 Conversion of available energy
06/03/1981EP0029583A1 Process and apparatus for reprocessing waste sulfuric acid, acid sludges, etc. of various compositions and consistencies
06/02/1981US4271137 Reaction with oxygen to form nitrogen oxides, producing nitrates therefrom with solid metal oxide
06/02/1981US4270997 Laser photochemical synthesis of Si3 N4
05/1981
05/27/1981EP0029272A2 An iridium compound and a bath and a process for electrodepositing iridium
05/26/1981CA1101634A1 Process for preparing low molecular weight linear phosphonitrilic chloride oligomers
05/19/1981US4268491 Iodine, semiconductors
05/19/1981CA1101215A1 Metal oxide/azide gas generating compositions
05/13/1981EP0028543A1 Process for simultaneous production of hydrated hydrazine and crystalline gypsum and method of separating hydrazine from a mixture of hydrated hydrazine and crystalline gypsum
05/12/1981US4267027 Process and apparatus for the preparation of nitrogen oxides
04/1981
04/29/1981EP0027645A1 Process for preparing hydrazines
04/28/1981US4264565 Method for producing powder of α-silicon nitride
04/28/1981US4264340 To obtain a dry nitrogen of high purity
04/28/1981US4264339 Process for the recovery of nitrogen-rich gases from gases containing at least oxygen as other component
04/21/1981US4263267 Process for the production of nitric acid
04/15/1981EP0026957A1 Cyclic process for the preparation and processing of a hydroxylammonium salt solution
04/14/1981US4261963 Introducing sulfur trioxide into gas phase over melt
04/08/1981EP0026685A1 Linear polychlorophosphazenes, process for their preparation and their use
04/08/1981EP0026604A1 A method of vapour phase growth and apparatus therefor
04/08/1981EP0026418A1 Process for absorbing nitrous gases
04/07/1981US4260593 Reaction of sulfur trioxide and ammonia, degassing
04/01/1981EP0025850A2 Process for the polymerization of cyclic polyhalophosphazenes using a catalyst composition of boron trihalide and oxygenated phosphorus compounds
03/1981
03/31/1981US4259305 Substantially pure cyclic phosphonitrilic chloride trimer
03/24/1981US4257917 Catalyst for preparation of soluble poly(dichlorophosphazenes)
03/24/1981CA1098050A1 Process for the recovery of nitrogen-rich gases from gases containing at least oxygen as other component
03/17/1981US4256967 For producing nitrogen oxides
03/17/1981US4256715 Process for preparing crystalline phosphonitrilic chloride oligomers
03/17/1981US4256711 Catalysis
03/17/1981CA1097671A1 Catalytic process for the preparation of phosphazene polymers
03/03/1981US4254090 Combined synthesis of hydrazine and hydrogen peroxide
03/03/1981US4253868 Apparatus for nitriding metal materials and ferroalloys under pressure
03/03/1981CA1096584A1 Process for recovery of nitric acid from waste nitric acid and/or nitrate
02/1981
02/19/1981WO1981000397A1 Nitric acid reconstitution
02/17/1981US4251452 Manganese (II) complexes
02/11/1981EP0023869A1 Process for producing sialons
02/11/1981EP0023813A1 Method and apparatus for forming nitric oxide from ammonia
02/03/1981US4248845 Process for preparing crystalline phosphonitrilic chloride oligomers
02/03/1981US4248840 Cis-diammineplatinum(II) orthophosphate complexes
01/1981
01/27/1981US4247529 Process for producing titanium carbonitride
01/20/1981US4246250 Process for the preparation of a hydroxylamine salt
01/07/1981EP0021954A1 Process and apparatus for continuous elimination of nitrogen oxides from nitrous gases
01/06/1981US4243443 For inflating protective devices
12/1980
12/30/1980US4242316 Sulfamic acid as a catalyst for the polymerization of chlorocyclophosphazenes
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