C01F - Definition 
Definition statement
This subclass covers:
Compounds of beryllium, e.g. fluorides, oxides, hydroxides.
Compounds of magnesium, e.g. magnesia, hydroxide, carbonates, halides, nitrates, sulfates, sulfites.
Compounds of aluminium, e.g. carbonate, oxides, hydroxides, alkali metal aluminates, halides, nitrates, sulfides, sulfites, sulfates.
Compounds of calcium, strontium or barium , e.g. oxides, hydroxides, carbonates, halides, nitrates, sulfates, sulfites.
Compounds of radium.
Compounds of thorium.
Compounds of the rare-earth metals, i.e. scandium, yttrium, lanthanum, lanthanides.
Synthesis, treatment or modification of any of the elements or compounds above by:
- chemical means, i.e. chemical reaction;
- physical means, e.g. concentration, dehydration, purification, separation, solidifying;
- addition of a stabilizer or preservative; or
- by the combination of chemical and physical means, with the proviso that the resultant product is proper for classification in this subclass.
Forming shaped metal compounds covered by C01F and the shaped products, per se, e.g. granules.
Relationship between large subject matter areas
In Class C01, in the absence of an indication to the contrary, a compound is classified in the last appropriate subclass of this class. For example, lead oxide is classified in subclass C01G rather than in this subclass.
This subclass is a function oriented entry for the chemical elements and their compounds and does not cover the application or use of the elements and compounds under the subclass definition. For classifying such information other entries in IPC exist, for example:
- Compounds or compositions for preservation of the bodies of humans, animals, plants, or parts thereof, e.g. disinfectants, pesticides, herbicides, as pest repellents or attractants, and as plant growth regulators are classified in A01N.
- Preparations for medical, dental, or toilet purposes are classified in A61K.
Ammonium salts of complex acids (other than complex cyanides) containing a metal in the anion are covered by the relevant groups of this subclass or subclasses C01D and C01G, according to the metal.
Complex ammine salts are classified in the relevant groups of this subclass, or subclasses C01D and C01G, according to the metal.
Salts, adducts, or complexes formed between an inorganic compound of this subclass and an organic compound of class C07, are regarded as organic compounds and classified in class C07.
When a process produces multiple compounds only those which are intended or desired require classification and classification may be proper in multiple subclasses.
MULTIPLE CLASSIFICATION
Biocidal, 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 A61P.
Uses of cosmetics or similar toilet preparations are further classified in A61Q.
References relevant to classification in this subclass
This subclass does not cover:
Metal hydrides | C01B 6/00 |
Salts of oxyacids of halogens | C01B 11/00 |
Peroxides, salts of peroxyacids | C01B 15/00 |
Sulfides or polysulfides of magnesium, calcium, strontium or barium | C01B 17/42 |
Thiosulfates, dithionites, polythionates | C01B 17/64 |
Compounds containing selenium or tellurium | C01B 19/00 |
Binary compounds of nitrogen with metals | C01B 21/06 |
Azides | C01B 21/08 |
Metal amides | C01B 21/092 |
Nitrites | C01B 21/50 |
Phosphides | C01B 25/08 |
Salts of oxyacids of phosphorous | C01B 25/16 |
Carbides | C01B 32/90 |
Compounds containing silicon | C01B 33/00 |
Compounds containing boron | C01B 35/00 |
Compounds having molecular sieve properties but not base-exchange properties | C01B 37/00 |
Compounds having molecular sieve and base exchange properties (crystalline zeolites) | C01B 39/00 |
Cyanides | C01C 3/08 |
Salts of cyanic acid | C01C 3/14 |
Salts of Cyanamide | C01C 3/16 |
Thiocyanates | C01C 3/20 |
Double sulfates of magnesium with sodium or potassium | C01D 5/12 |
Double sulfates of magnesium with lithium | C01D 15/06 |
Double sulfates of magnesium with rubidium, caesium or francium | C01D 17/00 |
Production of lime, magnesia or dolomite | C04B 2/00 |
Burning, calcining lime, magnesite or dolomite | C04B 2/10 |
Dehydration of gypsum for calcium sulfate cements | C04B 11/02 |
Preparation of elements or inorganic compounds except carbon dioxide by using microorganisms or enzymes | C12P 3/00 |
Obtaining metal compounds from mixtures in a metallurgical process | C22B |
Production of non-metallic elements or inorganic compounds by electrolysis or electrophoresis | C25B |
Informative references
Attention is drawn to the following places, which may be of interest for search:
Crystallisation | B01D 9/00 |
Calcination | B01J 6/00 |
Catalysts | B01J 23/00, B01J 27/00, B01J 31/00 |
General methods of preparing halides | C01B 9/00 |
Methods of preparing sulfites in general | C01B 17/62 |
Shaped ceramic products characterised by their composition | C04B 35/00 |
Use of inorganic ingredients, e.g. oxygen-containing compounds, e.g. metal carbonyls | C08K 3/18 |
Treatment of specific inorganic compounds of alkaline earth metals or magnesium, other than fibrous fillers | C09C 1/02 |
Inorganic compounds of alkaline earth metals, added to the pulp, paper-impregnating material, e.g. water-insoluble compounds | D21H 17/67 |
Special rules of classification
In this subclass, in the absence of an indication to the contrary, a compound or a process of making a compound appropriate for this subclass is classified in the last appropriate place.
In this subclass, tradenames that are often found in scientific and patent literature have been used to define precisely the scope of the groups.
This subclass provides for products which are intended or desired. When a process produces multiple compounds only those which are intended or desired require a classification. However, by-products can be given an additional classification if they or the processes for obtaining them are considered of interest for search.
Inorganic salts of a compound, unless specifically provided for elsewhere, are classified as that compound.
Glossary of terms
In this subclass, the following terms or expressions are used with the meaning indicated:
| Binary compound | A compound containing and limited to two distinct chemical elements. |
| Inorganic compound | A compound devoid of a carbon atom and containing a non-metallic element or a compound containing a carbon atom, and satisfying one of the following criteria:
The following are exceptions to the above and are to be considered as inorganic compounds: compounds consisting of only carbon atoms, (e.g. fullerenes), cyanogen, cyanogen halides, cyanamide, phosgene, thiophosgene, hydrocyanic acid, isocyanic acid, isothiocyanic acid, fulminic acid, unsubstituted carbamic acid, and salts of the previously mentioned acids and which contain the same limitations as to a carbon atom. |
| Metal | Any element other than a non-metal |
| Moiety | A specific part of a molecule. |
| Non-metal | The elements of hydrogen, carbon, halogen (fluorine, chlorine, bromine, iodine and astatine), oxygen, sulfur, phosphorus, silicon, nitrogen, boron, selenium, tellurium and noble gases (helium, neon, argon, krypton, xenon and radon) |
| Preparation | Covers synthesis, purification, separation, stabilisation or use of additives, unless a separate place is provided in the classification scheme. |