C
SECTION C — CHEMISTRY AND METALLURGY
  
CHEMISTRY
 C05
MANUFACTURE OF FERTILISERS
 C05

Note(s)

  1. An ingredient in a mixture of fertilisers, or a single fertiliser which contains more than one of the chemical elements on which the subdivision into sub-classes is based, is classified only in the first of the appropriate sub-classes. Thus, a nitrophosphate or an ammoniated superphosphate is classified in C05B but not in C05C, magnesium phosphate is classified in C05B but not in C05D, and calcium cyanamide in C05C but not in C05D.
  2. In this class it is desirable to add, in conformity with paragraph 61 of the Guide, after the double oblique stroke the symbols relating to complementary information concerning individual constituents of an invention unit which is already classified as such. This complementary information concerns the indication of ingredients of a mixture of different fertilisers or of fertilisers with non-fertilisers.
 C05D
INORGANIC FERTILISERS NOT COVERED BY SUB-CLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
 C05D 1/00
Fertilisers containing potassium (C05D 7/00 takes precedence)
 C05D 1/02
·  Manufacture from potassium chloride or sulphate or double or mixed salts thereof
 C05D 1/04
·  from minerals or volcanic rocks
 C05D 3/00
Calcareous fertilisers (C05D 7/00 takes precedence)
 C05D 3/02
·  from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium compounds
 C05D 3/04
·  from blast-furnace slag or other slags containing lime or calcium silicates
 C05D 5/00
Fertilisers containing magnesium (C05D 7/00 takes precedence)
 C05D 7/00
Fertilisers producing carbon dioxide
 C05D 9/00
Other inorganic fertilisers
 C05D 9/02
·  containing trace elements
 C05D 11/00
Mixtures of fertilisers, each belonging to C05D