Patents
Patents for C01C 3 - Cyanogen; Compounds thereof (1,688)
12/1996
12/27/1996EP0749401A1 Process for preparing calcium cyanamide from urea
12/05/1996DE3790210C2 Determn. of cyanide content of a sample
11/1996
11/27/1996CN1033378C Alkali metal cyanide granulates and process for preparation
11/20/1996EP0743093A1 Highly active double metal cyanide complex catalysts
11/20/1996EP0742781A1 Preparation of hydrogen cyanide
11/20/1996CN1033309C Organic and inorganic sulfur removing technology at normal temperature
08/1996
08/08/1996WO1996023582A1 Fluidized-bed reactor and reaction process using the same
07/1996
07/02/1996US5531973 Production of plasma generated NOx reducing precursors from a molecular nitrogen and hydrocarbon mixture
06/1996
06/25/1996US5529669 Apparatus and process for the preparation of hydrogen cyanide
06/18/1996US5527756 Catalyst assembly providing high surface area for nitric acid and/or HCN synthesis
05/1996
05/30/1996WO1996015983A1 Hydrogen cyanide gas production
05/22/1996CN1122798A Process for reduction of waste material during manufacture of acrylonitrile
03/1996
03/06/1996EP0699627A1 Anti-caking agents for ammonium thiocyanate
03/01/1996CA2157098A1 Anti-caking agents for ammonium thiocyanate
02/1996
02/14/1996EP0696579A1 A process for reduction of waste material during manufacture of acrylonitrile
11/1995
11/28/1995US5470541 Apparatus and process for the preparation of hydrogen cyanide
11/22/1995CN1030307C Method for recovery of sodium sulfocyanate from waste water
11/14/1995US5466857 Reducing amount of ammonia in effluent by injecting oxygen above fluidized bed
10/1995
10/10/1995US5457223 Process for elimination of waste material during manufacture of acrylonitrile
09/1995
09/27/1995EP0673675A2 Solid multi-component membranes for reactions
09/27/1995CN1109023A Production of sodium ferrocyanide by AS thiamine process
09/26/1995US5453109 Reacting potassium carbonate and urea to form potassium cyanate and converting with formaldehyde the ammonia into hexamethylenetetramine
09/14/1995WO1995024358A1 Process for preparing calcium cyanamide from urea
09/14/1995DE4408271A1 Verfahren zur Herstellung von Calciumcyanamid aus Harnstoff A process for the production of calcium cyanamide of urea
09/14/1995CA2185233A1 Process for preparing calcium cyanamide from urea
09/12/1995US5449808 Method for converting amides to nitriles and nitriles to amides
08/1995
08/30/1995CN1107464A A process for reduction of waste material during manufacture of aerylonitrile
08/23/1995EP0668470A2 Methods of reducing NOx produced by burning of a fuel
08/22/1995CA1336748C Reactive resins useful for precious metal recovery
08/19/1995CA2142551A1 Production of plasma generated no reducing precursors from a molecular nitrogen and hydrocarbon mixture
08/10/1995WO1995021126A1 Preparation of hydrogen cyanide
08/09/1995CN1029467C Method for purifying sulfur-bearing sodium cyanate waste liquid
08/08/1995US5439661 Process for producing hydrogen cyanide
06/1995
06/14/1995EP0657384A1 Process for producing hydrogen cyanide
05/1995
05/24/1995CN1028493C Novel solid multi-component membranes
05/17/1995EP0652985A1 Wires incorporating a helical component, assemblies thereof, and use of said assemblies as catalyser and/or to recover precious metals.
05/04/1995DE4336576A1 Process for preparing isocyanic acid from cyanuric acid
04/1995
04/26/1995EP0649343A1 Foraminous sheets for use in catalysis
04/12/1995EP0647592A1 Process for the recovery of CuCN
04/12/1995EP0556228B1 Surface stabilized sources of isocyanic acid
03/1995
03/28/1995US5401483 Catalyst assembly providing high surface area for nitric acid and/or HCN synthesis
03/15/1995CN1100091A Method for ammoxidation of olefins
03/08/1995EP0641771A1 Method for ammoxidation of olefins
02/1995
02/28/1995US5393393 Preparation of hydrogen cyanide
02/22/1995CN1099025A Method for stabilization of crude acetonitrile as oxidation or ammoxidation feed
02/15/1995EP0638546A1 A process for reduction of waste material during manufacture of acrylonitrile
02/08/1995EP0637584A1 Method for stabilization of crude acetonitrile as oxidation or ammoxidation feed
01/1995
01/25/1995CN1097719A Method for purifying sodium thiocyanate water solution
01/24/1995US5383940 Improved purity and handling properties
01/24/1995CA2128396A1 Method for the preparation of a hardening salt in lump form
01/03/1995US5378446 Corrosion preventive zinc cyanamide and method
12/1994
12/22/1994DE4420750A1 Process for the continuous preparation of calcium cyanamide
11/1994
11/16/1994CN1095044A Method for purifying waste liquid containing sodium thiocyanate by simulating moving bed
11/01/1994US5360601 Process for the preparation of isocyanic acid by the decomposition of N,N-disubstituted ureas
10/1994
10/19/1994CN1026226C Preparation method for corprous cyanide
10/18/1994US5356603 Using platinum group metals, or alloys, in sheet or guaze forms; curve to flat ratio varying
10/11/1994US5354543 Reactor using an iron-free NI-CR alloy indirect heat exchanger to quench reaction gases instead of using water; efficinecy
10/11/1994CA1332267C Process for producing cyanamide
09/1994
09/07/1994EP0613936A1 Process for reducing of sour water corrosiveness
09/07/1994CN1025851C Prodn. of cyanides by making use of hydroxy propanone cyanide as raw material instead of sodium (potassium) cyanide
09/06/1994US5344569 Process for recovering thiocyanate
07/1994
07/20/1994CN1089597A Process for the preparation of isocyanic acid by the decomposition of N,N-disubstituted ureas
07/13/1994CN1089234A Alkali metal cyanide granulates and a process for their preparation
07/07/1994DE4306445C1 Reducing corrosivity of acid water contg. cyanide and ammonium and sulphide ions
06/1994
06/22/1994CN1088182A Process for recovering thiocyanate
06/16/1994DE4324740C1 Prodn of salt mixture for hardening of steel parts - by pressing together potassium cyanate, potassium carbonate and sodium carbonate.
06/08/1994EP0600282A2 Alkali cyanide granules and process for the preparation thereof
06/08/1994EP0600211A2 Process for the preparation of solid sodium cyanide
06/05/1994CA2110660A1 Alkali metal cyanide granulates and a process for their preparation
06/01/1994EP0599491A1 Process for recovering thiocyanate
05/1994
05/10/1994CA1329316C Process for the preparation of aqueous ammonium thiocyanate
04/1994
04/26/1994US5306411 Solid multi-component membranes, electrochemical reactor components, electrochemical reactors and use of membranes, reactor components, and reactor for oxidation reactions
04/20/1994EP0592985A1 Compositions for reversibly binding oxygen
04/14/1994CA2107844A1 Compositions for reversibly binding oxygen
04/12/1994CA1328352C Process for the removal of mercury from precious metal-cyanide liquors
04/06/1994CN1084828A Purifying process for waste liquid containing sodium rhodanate
04/06/1994CN1084823A Process for recoverying sodium rhodanate from waste water
03/1994
03/15/1994US5294418 Process for reversibly binding oxygen
03/01/1994US5290525 Demetallization, leaching and separation
02/1994
02/17/1994WO1994003665A1 Wires incorporating a helical component, assemblies thereof, and use of said assemblies as catalyser and/or to recover precious metals
02/16/1994EP0582863A2 Process for the preparation of isocyanic acid by decomposition of N,N-disubstituted ureas
02/14/1994CA2100717A1 Process for the preparation of isocyanic acid by the decomposition of n,n-disubstituted ureas
01/1994
01/12/1994CN1080616A Method and equipment for producing sodium cyanide using coking ammonia
12/1993
12/15/1993EP0471714B1 Aluminium oxide tubes and process for manufacturing them
12/09/1993WO1993024229A1 Foraminous sheets for use in catalysis
12/09/1993CA2137083A1 Foraminous sheets for use in catalysis
12/07/1993CA1324874C Process for the preparation and the isolation of aromatic nitriles
12/01/1993EP0571952A1 Reversible oxygen sorbent compositions
11/1993
11/28/1993CA2097521A1 Reversible oxygen sorbent compositions
11/17/1993CN1022750C Production process for solid sodium cyanide
11/16/1993US5262145 Catalyst for ammonia conversion to HCN
11/02/1993US5258543 Vanadium, antimony catalyst
10/1993
10/05/1993US5250721 Method for stabilization of crude acetonitrile as oxidation or ammoxidation feed
08/1993
08/25/1993EP0556228A1 Surface stabilized sources of isocyanic acid.
08/24/1993US5239098 Selective separation and recovery of oxygen from oxygen-containing fluid stream
08/11/1993EP0555053A1 Process for preparing metal cyanide complex catalyst
08/03/1993US5232891 Process for the manufacture of a gauze for a catalytic converter and a gauze for a catalytic converter manufactured according thereto
07/1993
07/07/1993CN1073995A Anti-moth technology for camel hair
06/1993
06/29/1993US5223635 Preparation of organic compounds using as a reactant an adduct of isocyanic acid and a tertiary amine or an ether
06/09/1993EP0544710A1 Improvements in or relating to catalysts and getter systems
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