DIFF Subgroup
C01B 25/46 Preparation involving solvent-solvent extraction (solvent extraction in general B01D11/00)
Introduced: July 1974
Title
Titles differ between systems:
IPC: Preparation involving solvent-solvent extraction
CPC: Preparation involving solvent-solvent extraction (solvent extraction in general B01D11/00)
Full Title
Full titles differ between systems:
IPC:
Phosphorus; Compounds thereof > Oxyacids of phosphorus; Salts thereof > Preparation involving solvent-solvent extraction
CPC:
Phosphorus; Compounds thereof ( , C01B21/00, C01B23/00 take precedence; perphosphates C01B15/16) > Oxyacids of phosphorus; Salts thereof (peroxyacids or salts thereof C01B15/00) > Preparation involving solvent-solvent extraction (solvent extraction in general B01D11/00)
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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