WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

C05B　PHOSPHATIC FERTILISERS

　　WARNING - IPC group C05B 21/00 is not used in the internal ECLA classification scheme.

　　Subject matter covered by this group is classified in one of the ECLA groups C05B 1/00 to C05B 19/00 (see internal note after the title of class C05)

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

C05B 1/02 ・Superphosphates

C05B 1/04 ・Double-superphosphate; Triple-superphosphate; Other fertilisers based essentially on monocalcium phosphate

C05B 1/06 ・Ammoniation of superphosphates (fertilisers based essentially on ammonium orthophosphate C05B 7/00)

C05B 1/10 ・Apparatus for the manufacture of superphosphates

C05B 3/00 Fertilisers based essentially on di-calcium phosphate (C05B 11/00 takes precedence)

C05B 5/00 Thomas phosphate; Other slag phosphates

C05B 7/00 Fertilisers based essentially on alkali or ammonium orthophosphates (C05B 11/00 takes precedence)

C05B 9/00 Fertilisers based essentially on phosphates or double phosphates of magnesium (C05B 11/00 takes precedence)

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

C05B 11/02 ・Pretreatment

C05B 11/04 ・using mineral acid

C05B 11/06 ・・using nitric acid (nitrophosphates)

C05B 11/08 ・・using sulfuric acid

C05B 11/10 ・・using orthophosphoric acid

C05B 11/12 ・・using aqueous hydrochloric acid

C05B 11/14 ・・using wet gaseous acids

C05B 11/16 ・using alkaline lyes

C05B 13/00 Fertilisers produced by pyrogenic processes from phosphatic materials

C05B 13/02 ・from rock phosphates (C05B 13/06 takes precedence)

C05B 13/04 ・from metallic phosphorus compounds, e.g. ferro-phosphorus

C05B 13/06 ・Alkali and alkaline earth meta- or polyphosphate fertilisers

C05B 15/00 Organic phosphatic fertilisers (bone meal C05B 17/00)

C05B 17/00 Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal

C05B 17/02 ・containing manganese

C05B 19/00 Granulation or pelletisation of phosphatic fertilisers, other than slag (granulating apparatus B01J 2/00; granulating slag C04B)

C05B 19/02 ・of superphosphates or mixtures containing them

--- Edited by Muguruma Professional Engineer Office(C), 2013 ---