1. CPC Sections
  2. CPC Section C
  3. CPC Class C05
  4. CPC Subclass C05B
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CPC
COOPERATIVE PATENT CLASSIFICATION
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C05B
PHOSPHATIC FERTILISERS [2018-08]
WARNINGS

  • The following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups:
    C05B21/00covered by C05B 1/00 - C05B 19/00
    (see internal note after the title of class C05)
  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
C05B 1/00
Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly [2013-01]
C05B 1/02
.
Superphosphates [2013-01]
C05B 1/04
.
Double-superphosphate; Triple-superphosphate; Other fertilisers based essentially on monocalcium phosphate [2013-01]
C05B 1/06
.
Ammoniation of superphosphates (fertilisers based essentially on ammonium orthophosphate C05B 7/00) [2013-01]
C05B 1/10
.
Apparatus for the manufacture of superphosphates [2013-01]
C05B 3/00
Fertilisers based essentially on di-calcium phosphate (C05B 11/00 takes precedence) [2013-01]
C05B 5/00
Thomas phosphate; Other slag phosphates [2013-01]
C05B 7/00
Fertilisers based essentially on alkali or ammonium orthophosphates (C05B 11/00 takes precedence) [2013-01]
C05B 9/00
Fertilisers based essentially on phosphates or double phosphates of magnesium (C05B 11/00 takes precedence) [2013-01]
C05B 11/00
Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes [2013-01]
C05B 11/02
.
Pretreatment [2013-01]
C05B 11/04
.
using mineral acid [2013-01]
C05B 11/06
. .
using nitric acid (nitrophosphates) [2013-01]
C05B 11/08
. .
using sulfuric acid [2013-01]
C05B 11/10
. .
using orthophosphoric acid [2013-01]
C05B 11/12
. .
using aqueous hydrochloric acid [2013-01]
C05B 11/14
. .
using wet gaseous acids [2013-01]
C05B 11/16
.
using alkaline lyes [2013-01]
C05B 13/00
Fertilisers produced by pyrogenic processes from phosphatic materials [2013-01]
C05B 13/02
.
from rock phosphates (C05B 13/06 takes precedence) [2013-01]
C05B 13/04
.
from metallic phosphorus compounds, e.g. ferro-phosphorus [2013-01]
C05B 13/06
.
Alkali and alkaline earth meta- or polyphosphate fertilisers [2013-01]
C05B 15/00
Organic phosphatic fertilisers (bone meal C05B 17/00) [2013-01]
C05B 17/00
Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal [2013-01]
C05B 17/02
.
containing manganese [2013-01]
C05B 19/00
Granulation or pelletisation of phosphatic fertilisers, other than slag (granulating apparatus B01J 2/00; granulating slag C04B) [2013-01]
C05B 19/02
.
of superphosphates or mixtures containing them [2013-01]