IPC Classification

Class code (prefix) Descriptions Number of results
C01C 1/00 Ammonia; Compounds thereof
C01C 1/02 Preparation or separation of ammonia
C01C 1/04 Preparation of ammonia by synthesis
C01C 1/08 Preparation of ammonia from nitrogenous organic substances
C01C 1/10 Separation of ammonia from ammonia liquors, e.g. gas liquors
C01C 1/12 Separation of ammonia from gases and vapours
C01C 1/14 Saturators
C01C 1/16 Halides of ammonium
C01C 1/18 Nitrates of ammonium
C01C 1/20 Sulfides; Polysulfides
C01C 1/22 Sulfites of ammonium
C01C 1/24 Sulfates of ammonium
C01C 1/26 Carbonates or bicarbonates of ammonium
C01C 1/28 Methods of preparing ammonium salts in general
C01C 1/242 Preparation from ammonia and sulfuric acid or sulfur trioxide
C01C 1/244 Preparation by double decomposition of ammonium salts with sulfates
C01C 1/245 Preparation from compounds containing nitrogen and sulfur
C01C 1/246 Preparation from compounds containing nitrogen and sulfur from sulfur-containing ammonium compounds
C01C 1/247 Preparation from compounds containing nitrogen and sulfur from sulfur-containing ammonium compounds by oxidation with free oxygen
C01C 1/248 Preventing coalescing or controlling form or size of crystals
C01C 1/249 Deacidifying the crystals
C01C 3/00 Cyanogen; Compounds thereof
C01C 3/02 Preparation of hydrogen cyanide
C01C 3/04 Separation from gases
C01C 3/06 Stabilisation of hydrogen cyanide
C01C 3/08 Simple or complex cyanides of metals
C01C 3/10 Simple alkali metal cyanides
C01C 3/11 Complex cyanides
C01C 3/12 Simple or complex iron cyanides
C01C 3/14 Cyanic acid; Salts thereof
C01C 3/16 Cyanamide; Salts thereof
C01C 3/18 Calcium cyanamide
C01C 3/20 Thiocyanic acid; Salts thereof