B
PERFORMING OPERATIONS; TRANSPORTING
SHAPING
B28
WORKING CEMENT, CLAY, OR STONE
B28B
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER (foundry moulding B22C; working stone or stone-like material B28D; shaping of substances in a plastic state, in general B29C; making layered products not composed wholly of these substances B32B)

Note(s)

  • In this subclass, the following term is used with the meaning indicated:
    • "the material" means:
      • clay or other ceramic compositions;
      • slag;
      • mixtures with water-setting properties given by clay, cementitious material, or slag.
Subclass index
PRODUCING ARTICLES
Shaping articles characterised by method of production, machines therefor 1/00, 3/00, 5/00
Coating of surfaces 19/00
APPARATUS OR PROCESSES FOR TREATING OR WORKING ARTICLES 11/00
MOULDS; AUXILIARY EQUIPMENT 7/00, 13/00, 17/00
GENERAL LAYOUT OF PLANT 15/00
PRODUCTION OF TUBULAR OR REINFORCED ARTICLES 21/00, 23/00
B28C
PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER (preparing material for foundry moulds B22C 5/00)

Note(s)

  • In this subclass, the following terms or expressions are used with the meanings indicated:
    • "cement" or "mixtures of cement with other substances" includes plaster;
    • "clay" includes like ceramic compositions.
B28D
WORKING STONE OR STONE-LIKE MATERIALS (machinery for, or methods of, mining or quarrying E21C)