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
 C12
BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
 C12

Note(s)

  1. In subclasses C12M to Q and within each of these subclasses, in the absence of an indication to the contrary, an invention is classified in the last appropriate place. [3]
  2. In this class, viruses, undifferentiated plant or animal cells, protozoa and unicellular algae are considered as micro-organisms. Also, sub-cellular parts, unless specifically provided for, are classified with the whole cell. [3]
  3. In this class, it is desirable to add, in conformity with paragraph 83 of the Guide, after the double oblique stroke, the indexing codes of subclass C12R (see Note (1) following the title of subclass C12R). [3]
 C12H
PASTEURISATION; STERILISATION; PRESERVATION; PURIFICATION; CLARIFICATION; AGEING
 C12H 1/00
Pasteurisation, sterilisation, preservation, purification, clarification, or ageing of alcoholic beverages (simulating ageing by flavouring C12G 3/06)
 C12H 1/02
·  combined with removal of precipitate or added materials, e.g. adsorption material
 C12H 1/04
·  ·  with the aid of ion-exchange material or inert clarification material, e.g. adsorption material
 C12H 1/06
·  ·  Precipitation by physical means, e.g. by irradiation, vibrations
 C12H 1/08
·  ·  ·  by heating
 C12H 1/10
·  ·  Precipitation by chemical means
 C12H 1/12
·  without precipitation
 C12H 1/14
·  ·  with non-precipitating compounds, e.g. sulphiting; Sequestration, e.g. with chelate-producing compounds
 C12H 1/16
·  ·  by physical means, e.g. irradiation
 C12H 1/18
·  ·  ·  by heating
 C12H 1/20
·  ·  ·  ·  in containers allowing for expansion of the contents
 C12H 1/22
·  Ageing or ripening by storing, e.g. lagering of beer