C
SECTION C — CHEMISTRY AND METALLURGY
 C

Note(s)

Definitions for Section C:

  • 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 the field of sub-classes C12M-C12Q, in the absence of an indication to the contrary, an invention is classified in the last appropriate place. [3]
  2. Within 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. Within this class, non-obligatory classifications may be given as additional information relating to the micro-organisms used by means of the symbols of sub-class C12R[3]
 C12F
DISTILLATION AND RECTIFICATION OF FERMENTED SOLUTIONS; RECOVERY OF BY-PRODUCTS; DENATURING OF, AND DENATURED, ALCOHOL
 C12F 1/00
Distillation or rectification of fermented solutions (preparation of alcoholic beverages by distillation C12G 3/12)
 C12F 1/02
·  by continuous methods
 C12F 1/04
·  Rectification of spirit
 C12F 1/06
·  ·  by continuous methods
 C12F 1/08
·  ·  ·  Combined distillation and rectification
 C12F 3/00
Recovery of by-products
 C12F 3/02
·  of carbon dioxide
 C12F 3/04
·  ·  Recovery of volatile fermentation products from carbon dioxide
 C12F 3/06
·  from beer and wine (C12F 3/02 takes precedence; removal of yeast C12G 1/08)
 C12F 3/08
·  ·  Recovery of alcohol from press residues or other waste material (from carbon dioxide C12F 3/04)
 C12F 3/10
·  from distillery slops
 C12F 5/00
Preparation of denatured alcohol