C
SECTION C — CHEMISTRY; METALLURGY
 C

Note(s)

In section C, the definitions of groups of chemical elements are as follows:

  • Alkali metals: Li, Na, K, Rb, Cs, Fr
  • Alkaline earth metals: Ca, Sr, Ba, Ra
  • Lanthanides: elements with atomic numbers 57 to 71 inclusive
  • Rare earths: Sc, Y, Lanthanides
  • Actinides: elements with atomic numbers 89 to 103 inclusive
  • Refractory metals: Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W
  • Halogens: F, Cl, Br, I, At
  • Noble gases: He, Ne, Ar, Kr, Xe, Rn
  • Platinum group: Os, Ir, Pt, Ru, Rh, Pd
  • Noble metals: Ag, Au, Platinum group
  • Light metals: alkali metals, alkaline earth metals, Be, Al, Mg
  • Heavy metals: metals other than light metals
  • Iron group: Fe, Co, Ni
  • Non-metals: H, B, C, Si, N, P, O, S, Se, Te, noble gases, halogens
  • Metals: elements other than non-metals
  • Transition elements: elements with atomic numbers 21 to 30 inclusive, 39 to 48 inclusive, 57 to 80 inclusive, 89 upwards

  
CHEMISTRY
 C09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; MISCELLANEOUS COMPOSITIONS; MISCELLANEOUS APPLICATIONS OF MATERIALS
 C09B
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; MORDANTS; LAKES (fermentation or enzyme-using processes to synthesise a desired chemical compound C12P)
 C09B

Note(s)

In this subclass, in the absence of an indication to the contrary, a compound is classified in the last appropriate place.


 C09C
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (preparation per se of inorganic compounds or non-metallic elements C01; treatment of materials specially adapted to enhance their filling properties in mortars, concrete, artificial stone or the like C04B 14/00, C04B 18/00, C04B 20/00); PREPARATION OF CARBON BLACK  [4]
 C09C

Note(s)

In this subclass, in the absence of an indication to the contrary, a compound is classified in the last appropriate place. [3]


 C09D
INKS; PAINTS; VARNISHES; LACQUERS; WOOD-STAINS; CHEMICAL PAINT REMOVERS; PASTES OR SOLIDS FOR COLOURING OR PRINTING (cosmetics A61K; staining wood B27K 5/02; decorating B44; textile-treating compositions D06)

 C09F
NATURAL RESINS; FRENCH POLISH; DRYING-OILS; DRIERS (SICCATIVES); TURPENTINE

 C09G
POLISHING COMPOSITIONS OTHER THAN FRENCH POLISH; SKI WAXES

 C09H
PREPARATION OF GLUE OR GELATINE

 C09J
THE USE OF MATERIALS OTHER THAN GLUE AS ADHESIVES; ADHESIVE PROCESSES IN GENERAL (NON-MECHANICAL PART)
 C09J

Note(s)

Macromolecular adhesive substances or compositions based essentially thereon are always classified as the substance or composition in class C08, but the use of substances or compositions for adhesive purposes is classified in this subclass.


 C09K
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
 C09K

Note(s)

  1. This subclass covers also the use of specified materials in general or their use for the applications not specifically provided for elsewhere.
  2. In this subclass, the following term is used with the meaning indicated: [4]
    • "materials" includes compositions. [4]