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]
 C12F
DISTILLATION OR RECTIFICATION OF FERMENTED SOLUTIONS; RECOVERY OF BY-PRODUCTS; DENATURING OF, OR 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 or 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