CPC Definition - Subclass C01F
This place 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
- 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.
All compounds of Be, Mg, Al, Ca, Sr, Ba, Ra, Th or rare earth metals except those compounds which are classified in C01G because of application of the last appropriate place rule. So, in principle does this subclass comprise all Al-compounds with elements as such being part of C01B-C01D, e.g. Al2O3, Al(NO3)3, Al2S3.
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.
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 | |
Cyanides | |
Salts of cyanic acid | |
Salts of cyanamide | |
Thiocyanates | |
Double sulfates of magnesium with sodium or potassium | |
Double sulfates of magnesium with lithium | |
Double sulfates of magnesium with rubidium, caesium or francium | |
Production of lime, magnesia or dolomite | |
Burning, calcining lime, magnesite or dolomite | |
Dehydration of gypsum for calcium sulfate cements | |
Preparation of elements or inorganic compounds except carbon dioxide by using microorganisms or enzymes | |
Obtaining metal compounds from mixtures in a metallurgical process | |
Production of non-metallic elements or inorganic compounds by electrolysis or electrophoresis |
Attention is drawn to the following places, which may be of interest for search:
Crystallisation | |
Calcination | |
Catalysts | |
General methods of preparing halides | |
Methods for preparing oxides or hydroxides in general | |
Methods for preparing sulfides or polysulfides in general | |
Methods of preparing sulfites in general | |
Methods for the preparation of sulfates in general | |
Methods for the preparation of nitrates in general | |
Preparation of carbonates or bicarbonates in general | |
Methods of preparing ammonium salts in general | |
Shaped ceramic products characterised by their composition | |
Use of inorganic ingredients, e.g. oxygen-containing compounds, e.g. metal carbonyls | |
Treatment of specific inorganic compounds of alkaline earth metals or magnesium, other than fibrous fillers | |
Macroscopic single crystals: |
- 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.
- Compounds comprising in addition to Al, two or more elements (H and O not counted) are classified in C01F 7/78-C01F 7/788.
In this place, the following terms or expressions are used with the meaning indicated:
In this subclass, the nomenclature of groups of elements used is defined in the Note after the section title C.
This place covers:
General preparation features for (mostly groups) of compounds of the elements specified and being part of subclass C01F.
This place does not cover:
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Preparation of inorganic compounds in general:
Halides: | |
(hydr)oxides: | |
(poly)sulfides: | |
Sulfites: | |
Sulfates: | |
Nitrates: | |
Nitrites: | |
(bi)carbonates: | |
Ammonium-salts: |
In patent documents, the following words/expressions are often used as synonyms:
- aluminium, aluminum
This place covers:
All aluminium oxides, hydroxides, (oxy)hydroxides or aluminates.
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Aluminosilicates: | |
Zeolites: |
Attention is drawn to the following places, which may be of interest for search:
Organic compounds containing aluminium |
A document disclosing an aluminium oxide or hydroxide prepared by one single preparation method is classified according to the method. A document teaching the oxide or hydroxide compound as such and specifying method(s) for preparation is classified according to the method(s) and is also classified in C01F 7/02 according to the compound.
In this place, the following terms or expressions are used with the meaning indicated:
aluminium oxide or hydroxide: | aluminium oxide (all polymorphs, e.g. alpha, gamma), hydroxide or (oxy)hydroxide |
Bayerite, hydrargilite/gibbsite and norstrandite: | polymorphs of Al(OH)3 |
Boehmite or diaspore: | polymorphs of AlOOH |
Corundum or alpha-alumina: | high temperature phase of Al2O3 |
In patent documents the following expressions are often used as synonyms:
AlO(OH) aluminium oxyhydroxide | Al2O3.H2O aluminium monohydrate |
Al(OH)3 aluminium hydroxide | Al2O3·3H2O aluminium trihydrate |
This place covers:
The physical and chemical after-treatments of aluminium (hydr)oxides in general.
Attention is drawn to the following places, which may be of interest for search:
(After-)Treatments of aluminium (hydr)oxides in order to improve their pigmenting or filling properties |
This place does not cover:
Aluminates with a minor amount of other elements and chaaracterised as beta-alumina's: |
This place covers:
Treatments of bauxite according to the Bayer process insofar it relates to the pretreatment and digestion of the ore and separation of the red mud. Also included is the recovery of the spent liquor cycle stream.
This place does not cover:
Obtaining aluminium oxide or hydroxide from the resulting alkali metal aluminate solution |
This place covers:
The addition of agents for settling the red mud in Bayer process decanters.
This place does not cover:
The final clarification of aluminate solutions obtained from the settling tanks in the Bayer process: |
This place covers:
Compounds in which some of the phases are qualified as having the spinel structure.
This place does not cover:
Beta-aluminas |
In patent documents, the following words/expressions are often used with the meaning indicated:
Spinel | Alkaline earth metal aluminate, (MgAl2O4) |
This place covers:
Hydrolysis or oxidation of gaseous aluminium compounds in the gas phase, e.g. the oxidation of aluminium chloride in the gas phase.
Attention is drawn to the following places, which may be of interest for search:
The conversion of hydrated aluminium chloride by heating in the gas phase (i.e. thermal decomposition) |
This place covers:
E.g. the preparation of aluminium hydroxide from aluminium alkoxides in non-aqueous (e.g. alcoholic) solutions.
Attention is drawn to the following places, which may be of interest for search:
Sol-gel processing in general for the preparation of oxides: |
The preparation of aluminum hydroxides Al(OH)3 from salts other than organic salts (like aluminium sulfate or nitrate) is classified in C01F 7/34.
This place covers:
Compounds containing aluminium and two or more other elements, with the exception of oxygen and hydrogen are classified in this group.
This place covers:
Hydrotalcite Mg6Al2CO3(OH)16·4(H2O) is classified in this group.
This place covers:
Compounds comprising besides aluminium only anions, thereby not taken into account.
This place does not cover:
Mixed halides |
This place covers:
All compounds of calcium, strontium or barium except those with elements as such classified after C01F 11/00 and except those elements as specified in maingroup C01F 7/00.
This place does not cover:
Treatment of calcium carbonate for improving the pigmenting or filling properties (e.g. for application as filler in plastics or paper): |
In patent documents the following expressions are often used:
CaCO3 | Calcite, aragonite, vaterite |
This place covers:
All forms of calcium sulfate, hydrated or free of crystal water
This place does not cover:
Dehydration of gypsum for the production of calcium sulfate cements: |
In patent documents, the following abbreviations are often used:
Gypsum | Dihydrate |
In patent documents, the following words/expressions are often used with the meaning indicated:
Gypsum | CaSO4·2H2O |
Calcium sulfate hemihydrate | CaSO4·1/2H2O |
Anhydriite | CaSO4 |
This place covers:
All dehydrations, hydrations or conversions without a change in the water content, excluded the dehydration of the dihydrate (gypsum) into hemihydrate as part of the cement production (see below).
This place does not cover:
Dehydration of gypsum for the production of calcium sulfate cements: |
This place covers:
All compounds of radium except those with elements as such classified after C01F 13/00 and except those as specified after the subclass title C01F.
This place covers:
All compounds of thorium except those with elements as such classified after C01F 15/00 and except those as specified after the subclass title C01F.
This place covers:
All compounds of rare earth metals, i.e. scandium, yttrium, lanthanum or the group of the lanthanides except those with elements as such classified after C01F 17/00.
Attention is drawn to the following places, which may be of interest for search:
Abrasives consisting of rare earth metal compounds, e.g. ceria: |