CPC Definition - Subclass C01G

Last Updated Version: 2021.08
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B 6/00; salts of oxyacids of halogens C01B 11/00; peroxides, salts or peroxyacids C01B 15/00; 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; {compounds containing nitrogen, other non-metals and metal C01B 21/082}; metal amides C01B 21/092; nitrites C01B 21/50; {compounds of noble gases C01B 23/0005}; 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 and base-exchange properties, e.g. crystalline zeolites, C01B 39/00; cyanides C01C 3/08; salts of cyanamide C01C 3/16; thiocyanates C01C 3/20)
Definition statement

This place covers:

Inorganic compounds or salts containing metals like Cu,Ag,Au,Zn,Cd,Hg, Ga, In,Tl,Ge,Sn,Pb,Ti,Zr,Hf,As,Bi,Sb,V,Nb,Ta,cr,mo,W,,U,Mn,Re,Fe,Co,Ni,Ru,Rh,Pd,Os,Ir,Pt and the transuranic elements (Np, Pu,Am,Cm,Bk ,Cf,Es,Fm,Md,No,Lr)

Relationships with other classification places

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.

References
Limiting references

This place does not cover:

Metal hydrides, monoborane, diborane or addition complexes thereof

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

Compounds other than ammonia or cyanogen containing nitrogen and non-metals and optionally metals

C01B 21/082

Amides or imides of silicon

C01B 21/087

Metal imides or amides

C01B 21/092, C01B 21/0923

Nitrites

C01B 21/50

Compounds of noble gases

C01B 23/0005

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 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

Double sulfates of magnesium with sodium or potassium

C01D 5/12

With other alkali metals

C01D 15/00, C01D 17/00

Alloys or intermetallic compounds

C21, C22

Treatment of ores

C22B

Informative references

Attention is drawn to the following places, which may be of interest for search:

Treatment of specific inorganic materials other than fibrous fillers, for use as filler or pigment

C09C

Special rules of classification

The Physical properties of the specific compounds of metals are indexed according the C01P-Indexing Code scheme.

In case a group is indicated as indexed, the subgroups thereof are also indexed

The C01P-indexation scheme deals with Structural and Physical Aspects of Solid Inorganic Compounds classified in subclasses C01B - C01G and C09C.These aspects include crystal-structural characteristics, particle morphology and physical properties.

Exception from the last appropriate place rule :

Dopant: A dopant, also called a doping agent, is a trace impurity element that is inserted into a substance (in very low concentrations) in order to alter the physical properties of the substance. For the purpose of classification, a dopant is considered as such, when it's concentration is less than 5% (wt, vol, at.) or when mentioned as such in the patent document to be classified.

In such a case, the compound is classified ignoring the dopant(s) and the last appropriate place rule does not apply in view of the dopant(s). In case of doubts, the document is given the class relating to the last appropriate place rule by taking into account the dopant(s) and in the appropriate class, without taking into account the dopant(s)

Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general (electrolytic production of inorganic compounds C25B 1/00)
Definition statement

This place covers:

All methods, i.e. solid state, wet(precipitation, co-precipitaion) and gaseous (flame pyrolysis) methods for preparing compounds of metals not classified in the other C01G 1/02-C01G 1/14 classes (last appropriate place rule has to be applied)

References
Limiting references

This place does not cover:

Electrolytic production of inorganic compounds

C25B 1/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Other relevant classes see

C01G 3/00 - C01G 99/00

Special rules of classification

Specific examples are classified also according to the last appropriate rule in the suitable C01G classes. Physical properties of the specific compounds of metals are indexed according the C01P-Indexing Code scheme.

The C01P-indexation scheme deals with Structural and Physical Aspects of Solid Inorganic Compounds classified in subclasses C01B - C01G and C09C.These aspects include crystal-structural characteristics, particle morpholgy and physical properties.

Oxides
Definition statement

This place covers:

Only general methods of preparing metal oxides or multi metal oxides.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Other relevant classes see

C01G 3/00- C01G 99/00

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

A document is classified in this class, as soon as it is describing a method which is used for preparing several metal oxides. Example : a method for preparing chromium, copper or nickel oxides. In this example the following classes are additionally given : C01G 37/02, C01G 3/02 and C01G 53/04

Carbonyls
Definition statement

This place covers:

General methods for preparing metal carbonyls or metal carbonyl mixed metal salts

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Mn carbonyl

C01G 45/04

Fe carbonyl

C01G 49/16

Co carbonyl

C01G 51/02

Ni carbonyl

C01G 53/02

Ru,Rh,Pd,Os,Ir,Pt carbonyl

C01G 55/008

Special rules of classification

Specific examples shall be classified in the appropriate C01G 3/00-C01G 99/00 classes. The C01P-Indexation scheme shall be applied.

Halides
Definition statement

This place covers:

General methods for making metal halides or multi metal halides

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Other relevant classes see

C01G 3/00- C01G 99/00

Cu halides

C01G 3/04- C01G 3/06

Ag halides

C01G 5/02

Zn halides

C01G 9/04

Hg halides

C01G 13/04

Ge halides

C01G 17/04

Sn halides

C01G 19/04

Pb halides

C01G 21/16

Ti halides

C01G 23/02

Zr halides

C01G 25/00

Hf halides

C01G 27/04

As halides

C01G 28/007

Sb halides

C01G 30/006

V halides

C01G 31/04

Ta halides

C01G 35/02

Cr halides

C01G 37/04

Mo halides

C01G 39/04

W halides

C01G 41/04

U halides

C01G 43/04 - C01G 43/12

Mn halides

C01G 45/06

Fe halides

C01G 49/10

Co halides

C01G 51/08

Ni halides

C01G 53/08

Ru, Rh,Pd,Os,Ir,Rh halides

C01G 55/005

Transuranic compounds halides

C01G 56/00

Pu

C01G 56/006

Special rules of classification

Specific examples shall be classified in the appropriate C01G 3/00-C01G 99/00 classes.

The C01P-Indexation scheme shall be applied.

Nitrates
Definition statement

This place covers:

General methods of making metal or multi metal halides

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Other relevant classes see

C01G 3/00- C01G 99/00

Cu nitrates

C01G 3/08

Pb nitrates

C01G 21/18

Mn nitrates

C01G 45/08

Special rules of classification

Specific examples shall be classified in the appropriate C01G 3/00-C01G 99/00 classes.

The C01P-Indexation scheme shall be applied.

Sulfates
Definition statement

This place covers:

General methods of making metal sulfates or multi metal sulfates.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Other relevant classes

C01G 3/00- C01G 99/00

Cu sulfates

C01G 3/10

Zn sulfates

C01G 9/06

Pb sulfates

C01G 21/20

Ti sulfates

C01G 23/008

Zr sulfates

C01G 25/06

Hf sulfates

C01G 27/06

Cr sulfates

C01G 37/08

Mn sulfates

C01G 45/10

Fe sulfates

C01G 49/14

Co sulfates

C01G 51/10

Ni sulfates

C01G 53/10

Special rules of classification

Specific examples shall be classified in the appropriate C01G 3/00-C01G 99/00 classes. The C01P-Indexation scheme shall be applied.

Sulfides
Definition statement

This place covers:

General methods for preparing metal or multi metal sulfides, i.e. compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Other relevant classes

C01G 3/00- C01G 99/00

Cu Sulfides

C01G 3/12

Zn Sulfides

C01G 9/08

Cd Sulfides

C01G 11/02,

Pb Sulfides

C01G 21/21

Ti Sulfides

C01G 23/007

As Sulfides

C01G 28/008

Sb Sulfides

C01G 30/008

Mo Sulfides

C01G 39/06

Fe

C01G 49/12

Ni sulfides

C01G 53/11

Special rules of classification

Specific examples shall be classified in the appropriate C01G 3/00-C01G 99/00 classes. The C01P-Indexation scheme shall be applied.

Sulfites
Definition statement

This place covers:

General methods for preparing metal or multi metal sulfites, i.e. compounds comprising an anion like SO32- (Sulfite), S2O52-(disulfite).

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Other relevant classes

C01G 3/00- C01G 99/00

Special rules of classification

Specific examples shall be classified in the appropriate C01G 3/00-C01G 99/00 classes. The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Sulfite, secondary sulfite

compound comprises the anion SO32-

Hydrogen sulfite, Bisulfite, primary sulfite, acidic sulfite

compound comprises the anion HSO31-

Disulfite

compound comprises the anion S2O52-

Compounds of copper
Definition statement

This place covers:

Inorganic compounds of copper.

References
Limiting references

This place does not cover:

Alloys or intermetallic compounds

C21, C22

Informative references

Attention is drawn to the following places, which may be of interest for search:

Metallic Copper or Copper alloys fillers or pigments

C09C 1/627, C09C 1/66

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
Definition statement

This place covers:

Use of ion exchange techniques, extraction techniques

References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides copper, two or more other elements, with the exception of oxygen or hydrogen}
Definition statement

This place covers:

This group has been completely indexed according to the C01P-indexation scheme.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Supraconductors

H01L 39/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

Oxides; Hydroxides
Definition statement

This place covers:

Oxides, hydroxides, hydrous oxides, oxide-hydroxides of Copper

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme; The C01P-Indexation scheme shall be applied.

Halides
Definition statement

This place covers:

Halides of copper

References
Limiting references

This place does not cover:

Chlorides, Oxychlorides

C01G 3/05, C01G 3/06

Special rules of classification

The C01P-Indexation scheme shall be applied.

Chlorides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Oxychlorides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Nitrates
Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfates
Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Copper(II) sulfate

Blue vitriol, bluestone, Salzburg vitriol

Sulfides
Definition statement

This place covers:

Compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

Special rules of classification

The C01P-Indexation scheme shall be applied.

Complexes with ammonia
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of silver
References
Limiting references

This place does not cover:

Alloys or intermetallic compounds

C21, C22

Informative references

Attention is drawn to the following places, which may be of interest for search:

Metallic silver or silver alloys fillers or pigments

C09C, C09D

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides silver, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of gold
References
Limiting references

This place does not cover:

Alloys or intermetallic compounds

C21, C22

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides gold, two or more other elements, with the exception of oxygen or hydrogen}
References
Limiting references

This place does not cover:

Alloys or intermetallic compounds

C21, C22

Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of zinc
References
Limiting references

This place does not cover:

Alloys or intermetallic compounds

C21, C22

Informative references

Attention is drawn to the following places, which may be of interest for search:

Treatment of Zn-compounds for use as a pigment or filler

C09C 1/00

Use in Light Emitting Devices (LED)Luminescent Materials

C09K 11/00

Use in Cosmetics

H01L 33/00, H01L 31/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides zinc, two ore more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Oxides; Hydroxides
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Treatment of ZnO, use as pigment or filler

C09C 1/043

Special rules of classification

The C01P-Indexation scheme shall be applied.

Processes of production using dry methods, e.g. vapour phase processes
Special rules of classification

The C01P-Indexation scheme shall be applied.

Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfates
Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfides
Definition statement

This place covers:

Compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

ZnS

zinc blende or sphalerite (stable cubic form), Wurtzite (hexagonal form)

Compounds of cadmium
References
Limiting references

This place does not cover:

Alloys or intermetallic compounds

C21, C22

Informative references

Attention is drawn to the following places, which may be of interest for search:

Treatment of CdS for use as filler or pigment

C09C 1/10

Luminescent materials

C09K 11/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Copper(II) sulfate

Blue vitriol, bluestone, Salzburg vitriol

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides cadmium, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfides
Definition statement

This place covers:

Compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Treatment of CdS for use as filler or pigment

C09C 1/10

Luminescent materials

C09K 11/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

CdS

Greenockite, Hawleyite

Compounds of mercury
References
Limiting references

This place does not cover:

Alloys or intermetallic compounds

C21, C22

Informative references

Attention is drawn to the following places, which may be of interest for search:

Treatment of compounds of mercury

C09C 1/38

Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

HgS

Cinnabar, Vermillion

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides mercury, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Oxides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Mercury oxide HgO

Mercuric oxide, Montroydite

Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Mercury(II) chloride (HgCl2)

Mercury dichloride, Mercuric chloride, Corrosive sublimate, Mercurous chloride

Dimercury dichloride (Hg2Cl2, HgCl):

Calomel

Compounds of gallium, indium or thallium
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Coatings

C09D 5/00, C09D 7/00

Luminescent Materials

C09K 11/00

Semiconductor

H01L 31/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following abbreviations are often used:

ITO

Indium Tin oxide (tin-doped indium oxide)

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides gallium, indium, or thallium, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of germanium
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Semiconductor

H01L 31/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides germanium, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Germanium dioxide
Special rules of classification

The C01P-Indexation scheme shall be applied.

Halides of germanium
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of tin
References
Limiting references

This place does not cover:

Alloys or intermetallic compounds

C21, C22

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides tin, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Oxides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Tin dioxide", "Cassiterite", "stannic acid", "flowers of tin" and "tin(IV) oxide"
Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Stannous chloride
Special rules of classification

The C01P-Indexation scheme shall be applied.

Stannic chloride
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of lead
References
Limiting references

This place does not cover:

Alloys or intermetallic compounds

C21, C22

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides lead, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Oxides
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme.

Lead suboxide (Pb2O)
Definition statement

This place covers:

This group has been completely indexed according to the C01P-indexation scheme.

Special rules of classification

The C01P-Indexation scheme shall be applied.

Lead monoxide (PbO)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Glasses

C03C 3/00

Ceramic glazes

C03C 8/00

Pigments and fillers

C09C 1/14- C09C 1/20

Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Lead monoxide, Lead(II) oxide

Litharge, Massicot, Plumbous oxide

Lead dioxide (PbO2)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Elektrode materials

H01M 4/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Lead dioxide, Lead(IV)oxide

Plumbic oxide, Plattnerite

Red lead (Pb3O4)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Glasses compositions

C03C 3/00

Pigment or Filler

C09C 1/18

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme.

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Lead(II,IV) oxide (Pb3O4, or 2PbO·PbO2)", "Lead tetroxide", "minium", "red lead or triplumbic tetroxide", "Mennige" and "Minium"
Hydroxides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Carbonates
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Filler or Pigment

C09C 1/16

Special rules of classification

The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Lead carbonate basic lead carbonate (2PbCO3·Pb(OH)2)" and "Cerussite white lead"
Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Nitrates
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Rodenticides

A01N 25/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Lead(II) nitrate", "Lead nitrate", "Plumbous nitrate", "Lead dinitrate",and "Plumb dulcis"
Sulfates
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrode materials

H01M 4/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Lead(II) sulfate" and "Anglesite"
Sulfides
Definition statement

This place covers:

Compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

Special rules of classification

The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Lead(II) sulfide", "Plumbous sulfide" and , "Galena"
  • "Lead(IV) sulfide" and "Lead disulfide"
Plumbates; Plumbites
Definition statement

This place covers:

A plumbate is a salt having one of the several lead-containing oxyanions. Although the term plumbate can refer either to plumbate(II) or plumbate(IV), it traditionally refers specifically to plumbate(IV), whereas plumbate(II) is referred to as plumbite.

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Compounds of titanium {(preparation of Ti-compounds from ores or scraps C22B 34/12)}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides titanium, two or more other elements, with the exception of oxygen or hydrogen (C01G 23/001, C01G 23/003 take precedence)}
References
Limiting references

This place does not cover:

Preparation involving a liquid-liquid extraction, an adsorption or an ion- exchange

C01G 23/001

Titanates

C01G 23/003

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Titanates (C01G 23/001 takes precedence)}
Definition statement

This place covers:

Titanates of one or more metals other than titanium.

In particular the following compounds are covered:

  • orthotitanates, having the formula M2TiO4 (M = divalent metal);
  • metatitanates, having the formula MTiO3 (M = divalent metal);
  • complex titanates, e.g.
  • bismuth titanate Bi4Ti3O12; or
  • lead zirconate titanate (PZT) Pb[ZrxTi1-x]O3, 0≤x≤1. Note that PZT is only classified in this group, insofar as Zr is considered as a dopant.
References
Limiting references

This place does not cover:

Preparation involving a liquid-liquid extraction, an adsorption or an ion- exchange

C01G 23/001

Informative references

Attention is drawn to the following places, which may be of interest for search:

Ceramic material

C04B 35/00

Treatment of, pigments, fillers

C09C 1/36

Semiconductors, Supraconductors

H01L 31/00, H01L 39/00

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following abbreviations are often used:

PZT

Lead zirconate titanate (Pb[ZrxTi1-x]O3 0≤x≤1)

{Alkali titanates}
Definition statement

This place covers:

M=Alkali metal (M=Li, Na, K, Rb, Cs etc.)

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Ceramic material

C04B 35/00

Treatment of, pigments, fillers

C09C 1/36

Semiconductors, Supraconductors

H01L 31/00, H01L 39/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Alkaline earth titanates}
Definition statement

This place covers:

M=Alkaline Earth metal (M=Mg, Ca, Sr, Ba)

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Ceramic material

C04B 35/00

Treatment of, pigments, fillers

C09C 1/36

Semiconductors, Supraconductors

H01L 31/00, H01L 39/00

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Titanium sulfides (C01G 23/001 takes precedence)}
Definition statement

This place covers:

Compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrode materials

H01M 4/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Titanium(II) Sulfide", "titanium monosulfide" and ,"Wassonite"
{Titanium- and titanyl sulfate (C01G 23/001 takes precedence)}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Halides of titanium
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Titanium tetrachloride}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Titanium(IV) chloride", "Titanium tetrachloride" and "Tetrachlorotitanium"
{Purification of tetrachloride}
Definition statement

This place covers:

Aftertreatment of titanium tetrachloride

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Titanium trichloride}
Definition statement

This place covers:

The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Titanium(III) Chloride" and "titanium trichloride" and,"titanous chloride"
{Titanium fluoride}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Oxides; Hydroxides
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Catalysis

B01J 35/00, B01J 21/00

Ceramic Materials

C04B 35/00

Use as filler in Polymers, Coatings etc.

C08K 9/00, C09D 5/00, C09D 7/00

Treatment of, for use as pigment and filler

C09C 1/36

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Titanium sub-oxides}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Catalysis

B01J 35/00, B01J 21/00

Ceramic Materials

C04B 35/00

Use as filler in Polymers, Coatings etc.

C08K 9/00, C09D 5/00, C09D 7/00

Treatment of, for use as pigment and filler

C09C 1/36

Special rules of classification

The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Titanium(II) oxide" and "Titanium monoxide"
  • "Titanium(III) oxide" and "Titanium sesquioxide "
Titanium dioxide
Definition statement

This place covers:

This group has been completely indexed according to the C01P-indexation scheme.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Catalysis

B01J 35/00, B01J 21/00

Coatings on glass

C03C 17/00

Filler in Polymers

C08K 9/00

Treatment of, Pigment and filler

C09C 1/36

Dye sensitized solar cells

H01G 9/20

Special rules of classification

The C01P-Indexation scheme shall be applied.

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Titanium(IV) oxide", "Titanium dioxide", "Titania", "Rutile (tetragonal)","Anatase (tetragonal)" and "Brookite (orthorhombic)"
{Purification}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Producing by wet processes, e.g. hydrolysing titanium salts
Definition statement

This place covers:

Hydrolysis of titanium compounds other than chlorides and sulfates, e.g.. hydrolysis of organo-titanium salts.

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{by hydrolysing sulfate-containing salts}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{in the presence of seeds}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{by hydrolysing chloride-containing salts}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{in the presence of seeds}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Producing by vapour phase processes, e.g. halide oxidation
Definition statement

This place covers:

Flame pyrolysis, halide oxidation

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Evacuation and cooling of the gaseous suspension containing the oxide; Desacidification and elimination of gases occluded in the separated oxide}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Drying; Calcining {; After treatment of titanium oxide}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Compounds of zirconium
Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

PZT (when Zr is not considered as dopant)

Lead zirconate titanate (Pb[ZrxTi1-x]O3 0≤x≤1)

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides zirconium, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Oxides
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

YSZ

Yttria-stabilized zirconia

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "Zirconium dioxide (ZrO2)", "Zirconia" and, "Baddeleyite"
Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfates
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of hafnium
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides hafnium, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Oxides
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfates
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of arsenic
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a solvent-solvent extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides arsenic, two or more other elements, with the exception of oxygen or hydrogen (C01G 28/001 takes precedence)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{containing halogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Oxides; Hydroxides; Oxyacids (C01G 28/001 takes precedence)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Halides (C01G 28/001 takes precedence)}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Sulfides (C01G 28/001 takes precedence)}
Definition statement

This place covers:

Compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

Special rules of classification

The C01P-Indexation scheme shall be applied.

Arsenates; Arsenites {(C01G 28/001 takes precedence)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Arsenite

chemical compound containing an arsenic oxoanion where arsenic has oxidation state +3. The different forms of the anion are the next ones: ortho-arsenite: [AsO3]3- and meta-arsenite: [AsO2]-; Examples of arsenites include sodium arsenite which contains a polymeric linear anion, [AsO2]n, and silver arsenite, Ag3AsO3, which contains the trigonal, AsO33− anion.

Arsenate [AsO4]3-

arsenate (compound) is any compound that contains this ion. Arsenates are salts or esters of arsenic acid. The arsenic atom in arsenate has a valency of 5 and is also known as pentavalent arsenic or As[V].

{of ammonium, alkali or alkaline-earth metals or magnesium}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{containing at least two metals}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Compounds of bismuth
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Preparations involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides bismuth, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Compounds of antimony
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a solvent-solvent extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides antimony, two or more other elements, with the exception of oxygen or hydrogen (C01G 30/001 takes precedence)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{containing halogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Oxides; Hydroxides; Oxyacids (C01G 30/001 takes precedence)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Oxides}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Halides (C01G 30/001 takes precedence)}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of binary type SbX3 or SbX5 with X representing a halogen, or mixed of the type SbX3X'2 with X,X' representing different halogens}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Sulfides (C01G 30/001 takes precedence)}
Definition statement

This place covers:

Compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

Special rules of classification

The C01P-Indexation scheme shall be applied.

Antimonates; Antimonites {(C01G 30/001 takes precedence)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

The antimonate ion is [Sb(OH)6]-

, where antimony is present in its +5 oxidation state. antimonite refers to salts of antimony(III), such as NaSb(OH)4 and NaSbO2 (metaantimonite).These are formally salts of antimonous acid (antimonious acid), "Sb(OH)3"

{of ammonium, alkali or alkaline-earth metals or magnesium}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{containing at least two metals}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Compounds of vanadium
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides vanadium, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme.The C01P-Indexation scheme shall be applied.

Oxides
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of niobium
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides niobium, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Compounds of tantalum
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides tantalum, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of chromium
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Aftertreatment of compounds of chromium to enhance their pigmenting and filling properties

C09C 1/34

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides chromium, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Oxides or hydrates thereof
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Chromium dioxide
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Chromium trioxide; Chromic acid
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Chromium halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Chromylhalides
Definition statement

This place covers:

A Chromylhalide is a chemical compound with the formula CrO2(X)2, with X=halogene

Special rules of classification

The C01P-Indexation scheme shall be applied.

Chromium sulfates
Special rules of classification

The C01P-Indexation scheme shall be applied.

Chrome alum
Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Chrome alum or Chromium(III) potassium sulfate

the potassium double sulfate of chromium. Its chemical formula is KCr(SO4)2 and it is commonly found in its dodecahydrate form as KCr(SO4)2·12(H2O).

Chromates; Bichromates
Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Chromate

salts contain the chromate anion, CrO42−

Dichromate

salts contain the dichromate anion, Cr2O72−. They are oxyanions of chromium in the oxidation state +6.

Compounds of molybdenum
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides molybdenum, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme.The C01P-Indexation scheme shall be applied.

Oxides; Hydroxides
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfides
Definition statement

This place covers:

Compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of tungsten
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides tungsten, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Oxides; Hydroxides
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of uranium
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides uranium, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Oxides; Hydroxides
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Uranium dioxide
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Halides of uranium
Special rules of classification

The C01P-Indexation scheme shall be applied.

Fluorides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Chlorides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Bromides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Iodides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of manganese
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides manganese, two or more other elements, with the exception of oxygen or hydrogen (manganates, manganites or permanganates C01G 45/12)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Oxides; Hydroxides
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Carbonyls
Special rules of classification

The C01P-Indexation scheme shall be applied.

Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Nitrates
Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfates
Special rules of classification

The C01P-Indexation scheme shall be applied.

Manganates {manganites or} permanganates
References
Limiting references

This place does not cover:

Making of electrodes comprising the manganites or mangantes for use in galvanic primary cells and batteries, galvanic secondary cells and batteries, fuel cells and batteries.

H01M

Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrodematerials comprising the manganates, manganites

H01M

Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Manganate

any negatively charged molecular entity with manganese as the central atom : Permanganates ([MnO4]-) or manganates ( [MnO4]2-) However, for the purpose of classification "manganites", which do not contain discrete oxoanions, but are mixed oxides with perovskite (LaMnIIIO3, CaMnIVO3), spinel (LiMnIII,IV2O4) or sodium chloride (LiMnIIIO2, NaMnIIIO2) structures are considered as manganates and shall be classified in the specific subgroup of C01G 45/12.

{Permanganates ([MnO]4-) or manganates ([MnO4]2-)}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing alkali metals}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [MnO2]n- , e.g. LiMnO2, Li[MxMn1-x]O2}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O4]2-, e.g. Li2Mn2O4, Li2[MxMn2-x]O4}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O4]-, e.g. LiMn2O4, Li[MxMn2-x]O4}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type[MnO3]n-, e.g. Li2MnO3, Li2[MxMn1-xO3], (La,Sr)MnO3}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing lithium, e.g. Li2MnO3, Li2[MxMn1-xO3}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing rare earth, e.g. La1-xCaxMnO3, LaMnO3}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O8]n-, e.g. (LaSr3)Mn2O8}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O7]n-, e.g. (Sr2-xNdx)Mn2O7, Tl2Mn2O7}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O5]n-}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn5O12]n-}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of rhenium
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides rhenium, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Compounds of iron
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Mixed oxides or hydroxides, (C01G 49/0009 takes precedence)}
Definition statement

This place covers:

e.g. ferrites

References
Limiting references

This place does not cover:

Preparation involving a liquid-liquid extraction, an adsorption or an ion- exchange

C01G 49/0009

Informative references

Attention is drawn to the following places, which may be of interest for search:

Ceramics

C04B

Magnets

H01F

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Ferrites

chemical compounds consisting of ceramic materials with iron(III) oxide (Fe2O3) as their principal component. Many ferrites are spinels with the formula AB2O4, where A and B represent various metal cations, usually including iron. Spinel ferrites usually adopt a crystal motif consisting of cubic close-packed (fcc) oxides (O2−) with A cations occupying one eighth of the tetrahedral holes and B cations occupying half of the octahedral holes—that is, the inverse spinel structure. Some ferrites have hexagonal crystal structure, e.g. barium ferrite BaO:6Fe2O3 or BaFe12O19.

Soft ferrites

Ferrites that contain nickel, zinc, and/or manganese compounds. They have a low coercivity and are called soft ferrites, e.g. Manganese-zinc ferrite (MnaZn(1-a)Fe2O4).

{containing one alkali metal}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme The C01P-Indexation scheme shall be applied.

{containing one alkaline earth metal, magnesium or lead}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme The C01P-Indexation scheme shall be applied.

{containing aluminium}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme The C01P-Indexation scheme shall be applied.

{containing one rare earth metal, yttrium or scandium}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme The C01P-Indexation scheme shall be applied.

{containing zinc}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme The C01P-Indexation scheme shall be applied.

{containing manganese}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme The C01P-Indexation scheme shall be applied.

{containing iron in unusual valence state [IV, V, VI]}
Definition statement

This place covers:

e.g. ferrates

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Ferrate(VI)

refers either to the anion [FeO4]2−, in which iron is in the +6 oxidation state, or to a salt containing this anion. The term ferrate is often used to mean ferrate(VI), although according to IUPAC naming conventions, it may also refer to other iron-containing oxyanions, such as ferrate(V) and ferrate(IV)

{Compounds containing, besides iron, two or more other elements, with the exception of oxygen or hydrogen}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme The C01P-Indexation scheme shall be applied.

Oxides; Hydroxides {(C01G 49/0018 takes precedence)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme The C01P-Indexation scheme shall be applied.

Ferrous oxide (FeO)
Definition statement

This place covers:

E.g. Wüstite (FeO)

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme The C01P-Indexation scheme shall be applied.

Ferric oxide (Fe2O3)
Definition statement

This place covers:

E.g. iron(III) oxide (Fe2O3), alpha phase, hematite (α-Fe2O3, red), beta phase, (β-Fe2O3), gamma phase, maghemite (γ-Fe2O3), epsilon phase, (ε-Fe2O3), goethite (α-FeOOH, yellow), akaganéite (β-FeOOH), lepidocrocite (γ-FeOOH), feroxyhyte (δ-FeOOH),

References
Limiting references

This place does not cover:

Treatment of iron oxides to enhance their pigmenting and filling properties

C09C 1/22, C09C 1/24

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Ferroso-ferric oxide (Fe3O4)
Definition statement

This place covers:

E.g. iron(II,III) oxide, magnetite (Fe3O4, black)

References
Limiting references

This place does not cover:

Treatment of iron oxides to enhance their pigmenting and filling properties

C09C 1/22, C09C 1/24

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Halides {(C01G 49/0018 takes precedence)}
Definition statement

This place covers:

Ferrous halogenides, e.g. FeCl2; ferric halogenides, e.g. FeCl3

Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfides {(C01G 49/0018 takes precedence)}
Definition statement

This place covers:

Compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Iron sulfide or Iron sulphide

a chemical compound of iron and sulfur with a wide range of stoechiometric formulae and different crystalline structures.e.g. Natural minerals : Iron(II) sulfide, FeS; Troilite, FeS, pyrrhotite; Greigite, Fe3S4, analog to magnetite, Fe3O4; Pyrrhotite, Fe1-xS (where x = 0 to 0.2), or Fe7S8; Mackinawite, Fe1+xS (where x = 0 to 0.1);Marcasite, or iron(II) disulfide, FeS2 (orthorhombic); Pyrite, or iron(II) disulfide, FeS2 (cubic).

Sulfates {(C01G 49/0018 takes precedence)}
Definition statement

This place covers:

E.g. ferrous sulphate, Iron(II) sulfate (other names : green vitriol; iron vitriol; copperas; melanterite; szomolnokite), FeSO4; Ferric sulphate, Iron(III) sulfate, Fe2(SO4)3

Special rules of classification

The C01P-Indexation scheme shall be applied.

Carbonyls {(C01G 49/0018 takes precedence)}
Definition statement

This place covers:

E.g. pentacarbonyl iron, iron carbonyl

Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of cobalt
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides cobalt, two or more other elements, with the exception of oxygen or hydrogen (cobaltates C01G 51/40)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Carbonyls
Definition statement

This place covers:

E.g., Octacarbonyldicobalt(Co—Co), Cobalt carbonyl

Special rules of classification

The C01P-Indexation scheme shall be applied.

Oxides; Hydroxides
Definition statement

This place covers:

E.g., Cobalt(II) oxide (cobaltous oxide, cobalt monoxide) – CoO, Cobalt(III) oxide (cobaltic oxide) - Co2O3, Cobalt(II,III) oxide (cobaltosic oxide, tricobalt tetroxide) - Co3O4

References
Limiting references

This place does not cover:

Use as pigment in ceramics, enamels

C09C 1/0009

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Carbonates
Special rules of classification

The C01P-Indexation scheme shall be applied.

Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Chlorides}
Definition statement

This place covers:

E.g., Cobalt(II) chloride (Other names : Cobaltous chloride, Cobalt dichloride)

Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfates
Special rules of classification

The C01P-Indexation scheme shall be applied.

Complexes with ammonia
Definition statement

This place covers:

E.g. hexaamminecobalt(III) chloride (Other names cobalt hexammine chloride, hexaamminecobalt(III) chloride): [Co(NH3)6]Cl3.

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Sulfides}
Definition statement

This place covers:

In general, Compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

Special rules of classification

The C01P-Indexation scheme shall be applied.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Cobalt sulfide

chemical compounds with a formula CoxSy. Well-characterized species include minerals with the formula CoS2 (cattierite) and Co3S4, (Linnaeite) and the synthetic material Co9S8.

{Cobaltates}
Definition statement

This place covers:

Cobaltates are compounds comprising CoOn(x-) anions

References
Limiting references

This place does not cover:

Making of electrodes comprising the manganites or mangantes for use in galvanic primary cells and batteries, galvanic secondary cells and batteries, fuel cells and batteries.

H01M

Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing alkali metals, e.g. LiCoO2}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing manganese}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [MnO2]n- , e.g. Li(CoxMn1-x)O2, Li(MyCoxMn1-x-y)O2}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O4]2-, e.g. Li2(CoxMn2-x)O4, Li2(MyCoxMn2-x-y)O4}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O4]-, e.g. Li(CoxMn2-x)04, Li(MyCoxMn2-x-y)O4}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [MnO3]2-, e.g. Li2[CoxMn1-xO3], Li2[MyCoxMn1-x-yO3}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O8]n-}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O7]n-}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O5]n-}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn5O12]n-}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing alkaline earth metals, e.g. SrCoO3}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing rare earth, e.g. La0.3Sr0.7CoO3}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing rare earth, e.g. LaCoO3 (C01G 51/68 takes precedence)}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of nickel
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides nickel, two or more other elements, with the exception of oxygen or hydrogen (nickelates C01G 53/40)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Carbonyls
Definition statement

This place covers:

E.g. nickel carbonyl (IUPAC name: tetracarbonylnickel) is the organonickel compound with the formula Ni(CO)4. This pale-yellow liquid is the principal carbonyl of nickel.

Special rules of classification

The C01P-Indexation scheme shall be applied.

Oxides; Hydroxides
Definition statement

This place covers:

E.g. Nickel(II) oxide (Nickel monoxide, Oxonickel) is the chemical compound with the formula NiO. It is notable as being the only well characterized oxide of nickel (although nickel(III) oxide, Ni2O3 and NiO2 have been claimed). The mineralogical form of NiO, bunsenite, is very rare.

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

Carbonates
Definition statement

This place covers:

E.g. Nickel(II) carbonate (nickelous carbonate) : Ni4CO3(OH)6(H2O)4, Ni4CO3(OH)6(H2O)4.

Special rules of classification

The C01P-Indexation scheme shall be applied.

Halides
Special rules of classification

The C01P-Indexation scheme shall be applied.

Chlorides
Definition statement

This place covers:

E.g. Nickel(II) chloride (nickel chloride, nickelous chloride, nickel(II) salt of hydrochloric acid), is the chemical compound NiCl2. (hydrate : NiCl2·6H2O; mineral nickelbischofite).

Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfates
Definition statement

This place covers:

E.g. Nickel(II) sulphate (nickel sulfate, nickelous sulphate) usually refers to the formula NiSO4(H2O)6.

Special rules of classification

The C01P-Indexation scheme shall be applied.

Sulfides
Definition statement

This place covers:

Compounds comprising an anion like S2-(sulfide), or [Sn]2- (polysulfide).

Special rules of classification

The C01P-Indexation scheme shall be applied.

Complexes with ammonia
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Nickelates}
Definition statement

This place covers:

Nickelates are compounds comprising NiOn(x-) anions

References
Limiting references

This place does not cover:

Making of electrodes comprising the manganites or mangantes for use in galvanic primary cells and batteries, galvanic secondary cells and batteries, fuel cells and batteries.

H01M

Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing alkali metals, e.g. LiNiO2}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing manganese}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [MnO2]n- , e.g. Li(NixMn1-x)O2, Li(MyNixMn1-x-y)O2}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O4]2-, e.g. Li2(NixMn2-x)O4, Li2(MyNixMn2-x-y)O4}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O4]-, e.g. Li(NixMn2-x)O4, Li(MyNixMn2-x-y)O4}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [MnO3]2-, e.g. Li2[NixMn1-xO3], Li2[MyNixMn1-x-yO3}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O8]n-}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O7]n-}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn2O5]n-}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{of the type [Mn5O12]n-}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing alkaline earth metals, e.g. SrNiO3, SrNiO2}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing rare earth, e.g. La1.62 Sr0.38NiO4}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{containing rare earth, e.g. LaNiO3 (C01G 53/68 takes precedence)}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of ruthenium, rhodium, palladium, osmium, iridium, or platinum
References
Limiting references

This place does not cover:

Organometallic compounds, Salts of organic acids

C07C, C07F

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides ruthenium, rhodium, palladium, osmium, iridium, or platinum, two or more other elements, with the exception of oxygen or hydrogen (C01G 55/007 takes precedence)}
References
Limiting references

This place does not cover:

Organometallic compounds, Salts of organic acids

C07C, C07F

Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Oxides; Hydroxides}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Halides}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing at least one carbonyl group}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Compounds of transuranic elements
Definition statement

This place covers:

In chemistry, transuranium elements (also known as transuranic elements) are the chemical elements with atomic numbers greater than 92 (the atomic number of uranium) and comprise two chemical series :

Actinides : 93. neptunium, Np, 94. plutonium, Pu, 95. americium, Am, 96. curium, Cm, 97. berkelium, Bk, 98. californium, Cf, 99. einsteinium, Es, 100. fermium, Fm, 101. mendelevium, Md, 102. nobelium, No, 103. lawrencium, Lr,

Transactinide elements : 104. rutherfordium, Rf, 105. dubnium, Db, 106. seaborgium, Sg, 107. bohrium, Bh, 108. hassium, Hs, 109. meitnerium, Mt, 110. darmstadtium, Ds, 111. roentgenium, Rg, 112. copernicium, Cn, 113. Ununtrium, temporary name, (2003), 114. Ununquadium, temporary name, (1998), 115. Ununpentium, temporary name, (2004), 116. Ununhexium, temporary name, (2000), 117. Ununseptium, temporary name, (2010), 118. Ununoctium, temporary name, (2002).

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds comprising, besides transuranic elements, two or more other elements, with the exception of oxygen or hydrogen (C01G 56/001 takes precedence)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Compounds of plutonium (C01G 56/001 takes precedence)}
Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds of transuranic elements (C01G 56/001 and C01G 56/004 take precedence)}
Special rules of classification

The C01P-Indexation scheme shall be applied.

Subject matter not provided for in other groups of this subclass
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.

{Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
References
Limiting references

This place does not cover:

Extraction of metal compounds from ores or concentrates by wet processes

C22B 3/00

Special rules of classification

The C01P-Indexation scheme shall be applied.

{Compounds containing, besides a metal not provided for elsewhere in this subclass, two or more other elements other than oxygen or hydrogen (C01G 99/003 takes precedence)}
Special rules of classification

This group has been completely indexed according to the C01P-indexation scheme. The C01P-Indexation scheme shall be applied.