CPC Definition - Subclass C01C
MULTIPLE CLASSIFICATION
Biocidal, pest repellant, pest attractant, or plant growth regulatory activity of chemical compounds or preparations is further classified in A01P.
Therapeutic activity of chemical compounds or medicinal preparations is further classified in subclass A61P.
Uses of cosmetics or similar toilet preparations are further classified in subclass A61Q.
This place does not cover:
Exceptions to the last appropriate place rule:
Metal hydrides, monoborane, diborane or addition complexes thereof | |
Salts of oxyacids of halogens | |
Peroxides, salts of peroxyacids | |
Sulfides or polysulfides of magnesium, calcium, strontium, or barium | |
Thiosulfates, dithionites, polythionates | |
Compounds containing selenium or tellurium | |
Binary compounds of nitrogen with metals | |
Azides | |
Compounds other than ammonia or cyanogen containing nitrogen and non-metals and optionally metals | |
Amides or imides of silicon | |
Metal imides or amides | |
Nitrites | |
Compounds of noble gases | |
Phosphides | |
Salts of oxyacids of phosphorus | |
Carbides | |
Compounds containing silicon | |
Compounds containing boron | |
Compounds having molecular sieve properties but not having base-exchange properties | |
Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites |
This place covers:
Features dealing with the catalytic gas phase synthesis of ammonia and not covered by the subgroups C01C 1/0411 - C01C 1/0488 are classified in this group. Also items related to the cycle, like by-passes or specific flow connections are classified in here.
This place does not cover:
The preparation or purification of ammonia synthesis gas, i.e. the N2+H2 gas mixture: |
This place covers:
This group covers the synthesis in gas phase of ammonia.
The detailed catalyst or the reactor used in the process being classified in the subgroups below.
Also heat exchangers arranged in the reactor are classified in here.
This place does not cover:
Arrangements of several reactors: |
Attention is drawn to the following places, which may be of interest for search:
Fixed-bed reactors: | |
Preparation or purification of gas mixtures for ammonia synthesis |
This place does not cover:
Separation of ammonia from a separated purge gas flow: |
Attention is drawn to the following places, which may be of interest for search:
Treatment of molasses in general |
This place does not cover:
Separation of ammonia as part of the ammonia synthesis process: |
This place does not cover:
Separation of ammonia as part of the ammonia synthesis process: |
This place does not cover:
Preparation by distillation of carbamates: | |
Preparation by decomposing formamide or ammonium formamate: |
In this place, the following terms or expressions are used with the meaning indicated:
Cyanogen | C2N2 |
In patent documents the following expressions/words and are often used as synonyms:
Cyanogen | dicyan (US-doc's and FR-doc's) and ethanedinitrile. |
In this place, the following terms or expressions are used with the meaning indicated:
Halogenides of cyanogen | XCN |
In this place, the following terms or expressions are used with the meaning indicated:
Thiocyanogen | (SCN)2 |
In this place, the following terms or expressions are used with the meaning indicated:
Sulfurdicyanamide | S(CN)2 |
This place does not cover:
Preparations starting from nitrogen-containing organic compounds: |
This place does not cover:
Preparation from hydrocarbons and ammonia in the absence of oxygen: |
This place does not cover:
Preparation from hydrocarbons and ammonia in the presence of oxygen: |
In this place, the following terms or expressions are used with the meaning indicated:
HMA | Hydrogen cyanide Methane Ammonia-process |
In patent documents, the following words/expressions are often used with the meaning indicated:
BMA (German documents) | Blausäure Methan Ammoniak-Verfahren |
This place does not cover:
Preparation by decomposition of nitrogen containing organic compounds: | |
Preparation from elementary nitrogen or carbides: |
This place does not cover:
Preparation by decomposition of nitrogen containing organic compounds: |
In this place, the following terms or expressions are used with the meaning indicated:
Cyanic acid | HOCN |
Isocyanic acid | HNCO |
In this place, the following terms or expressions are used with the meaning indicated:
Isocyanic acid | HNCO |
This place does not cover:
Preparation by decomposition of nitrogen containing organic compounds: | |
Preparation from elementary nitrogen or carbides: | |
Dicyanamide: |
In this place, the following terms or expressions are used with the meaning indicated:
Cyanamide | H2NCN |
In this place, the following terms or expressions are used with the meaning indicated:
Calcium cyanamide | CaNCN |
This place does not cover:
Preparation by decomposition of nitrogen containing organic compounds: |
In this place, the following terms or expressions are used with the meaning indicated:
Thiocyanic acid | hydrogen thiocyanate |
In patent documents, the following words/expressions are often used with the meaning indicated:
Thiocyanic acid | HSCN |