C01G - Definition 
Definition statement
This subclass covers:
Inorganic compounds containing at least one of the following metals:
- refractory metals, i.e. Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W;
- platinum group metals, i.e. Os, Ir, Pt, Ru, Rh, Pd;
- iron group metals, i.e. Fe, Co, Ni;
- Mn, Cu, Zn, Ga, Ge, As, Tc, Ag, Cd, In, Sn, Sb, Re, Au, Hg, Tl, Pb, Bi, Po, Ac and the elements having an atomic number of 91 or above.
Synthesis, treatment or modification of any of the compounds proper for this subclass by:
- chemical means, i.e. chemical treatment;
- physical means, e.g. concentration, dehydration, purification, separation;
- addition of a stabilizer or preservative; or
- the combination of chemical and physical means, with the proviso that the resultant product is proper for classification in this subclass.
Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D or C01F, in general.
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 carbonate is classified in subclass C01G 21/14, rather than in C01B.
Subclass C01G is a function oriented entry for the compounds themselves and does not cover the application or use of the 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 subclass A01N.
- Preparations for medical, dental, or toilet purposes are classified in subclass A61K.
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 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 subclass 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.
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 |
Thiosulfates, dithionites or polythionates | C01B 17/64 |
Compounds containing selenium or tellurium | C01B 19/00 |
Binary compounds of nitrogen with metals, silicon or boron | C01B 21/06 |
Azides | C01B 21/08 |
Metal amides | C01B 21/092 |
Nitrites | C01B 21/50 |
Phosphides | C01B 25/08 |
Salts of oxyacids of phosphorus | 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 having base-exchange properties | C01B 37/00 |
Compounds having molecular sieve properties and base- exchange properties, e.g. 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 |
Treatment of inorganic materials to enhance their pigmenting or filling properties; Preparation of carbon black | C09C |
Preparing inorganic compounds except carbon dioxide using enzymes or fermentation processes | C12P 3/00 |
Manufacture of iron or steel | C21B |
Obtaining metal compounds by metallurgical processes | C22B |
Alloys | C22C |
Electrolytic production of inorganic compounds or non-metals | C25B 1/00 |
Processes for producing compounds in which electricity is simultaneously generated | C25B 5/00 |
Electrophoretic production of inorganic compounds or non-metals | C25B 7/00 |
Electrolytic production of metals by electolysis of solutions | C25C 1/00 |
Electrolytic production of metals by electolysis of melts | C25C 3/00 |
Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products | C04B 35/00 |
Informative references
Attention is drawn to the following places, which may be of interest for search:
Chemical or physical processes, e.g. catalysts, colloid chemistry; their relevant apparatus | B01J |
General methods of preparing halides | C01B 9/00 |
Methods of preparing oxides or hydroxides in general | C01B 13/14 |
Methods of preparing sulfides or polysulfides in general | C01B 17/20 |
Methods of preparing sulfites in general | C01B 17/62 |
Methods of preparing sulfates in general | C01B 17/96 |
Methods of preparing nitrates in general | C01B 21/48 |
Methods of preparing carbonates or bicarbonates in general | C01B 32/60 |
Inorganic fertilisers | C05D |
Organic compounds | C07 |
Electrolytic production of metal powders or porous metal masses | C25C 5/00 |
Chemical libraries containing only inorganic compounds or inorganic materials | C40B 40/18 |
Methods of creating chemical libraries | C40B 50/00 |
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.
Salts of polybasic acids with ammonium and a metal as cations are classified as though the ammonium were hydrogen.
Complex ammine salts are classified in the relevant groups of this subclass, according to the metal.
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.
If an inorganic compound contains two or more metals of this subclass, then a classification is given in the last relevant main group.
If an inorganic compound contains a single metal and two or more non-metal moieties proper for this subclass, then a classification is given in the last relevant subgroup.
Compounds that are covered by different main groups because of alternatively specified metal atoms are classified in each relevant main group.
Compounds that are covered by different subgroups because of alternatively specified non-metal moieties are classified in each relevant subgroup.
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:
| Direct bonding | Requires a bond between two adjacent atoms. |
| 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. |
| Transuranic elements | Elements having higher atomic weights than uranium. |