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]
 C12C
BREWING OF BEER (cleaning of raw materials A23N; pitching or depitching machines, cellar tools C12L; propagating yeasts C12N 1/14; non-beverage ethanolic fermentation C12P 7/06)
 C12C 1/00
Preparation of malt
 C12C 1/02
·  Pretreatment of grains, e.g. washing, steeping
 C12C 1/04
·  Germinating; Drying
 C12C 1/06
·  ·  on single or multi-stage floors
 C12C 1/08
·  ·  in boxes or drums
 C12C 1/10
·  ·  Drying on fixed supports
 C12C 1/12
·  ·  Drying on moving supports
 C12C 1/14
·  Grain or malt turning apparatus
 C12C 1/16
·  After-treatment of malt, e.g. malt cleaning, detachment of the germ
 C12C 1/18
·  Preparation of malt extract or of special kinds of malt, e.g. caramel, black malt (malt products for use as foodstuffs A23L)
 C12C 3/00
Treatment of hops (hop extraction C12C 9/02)
 C12C 3/02
·  Drying
 C12C 3/04
·  Conserving; Storing; Packing
 C12C 5/00
Other raw materials for the preparation of beer
 C12C 5/02
·  Additives for beer
 C12C 5/04
·  ·  Colouring additives
 C12C 7/00
Preparation of wort (malt extract C12C 1/18)
 C12C 7/02
·  Mixing malt with water
 C12C 7/04
·  Preparation of the mash
 C12C 7/06
·  ·  Mashing apparatus
 C12C 7/08
·  ·  ·  with a horizontal stirrer shaft
 C12C 7/10
·  ·  ·  with a vertical stirrer shaft
 C12C 7/12
·  ·  Cooling devices for the mash
 C12C 7/14
·  Clarifying wort (Läuterung)
 C12C 7/16
·  ·  by straining
 C12C 7/18
·  After-treatment of wort, e.g. sterilisation
 C12C 9/00
Methods specially adapted for the making of beerwort
 C12C 9/02
·  Beerwort treatment; Boiling with hops; Hop extraction (brewing devices C12C 13/00)
 C12C 9/04
·  Clarifying beerwort between hop boiling and cooling
 C12C 9/06
·  Cooling beerwort; Clarifying beerwort during or after the cooling
 C12C 9/08
·  After-treatment
 C12C 11/00
Fermentation processes for beer (preparation of wine C12G 1/00)
 C12C 11/02
·  Pitching yeast
 C12C 11/04
·  Fermentation of beerwort
 C12C 11/06
·  Acidifying the wort for ethanolic fermentation
 C12C 13/00
Brewing devices  [3]
 C12C 13/02
·  Brew kettles  [3]
 C12C 13/04
·  ·  heated with steam  [3]
 C12C 13/06
·  ·  heated with fire  [3]