CPC Subgroup
C01B 17/965 Full Title
Sulfur; Compounds thereof > Methods for the preparation of sulfates in general (particular individual sulfates, see the relevant groups of subclasses C01B - C01G, according to the cation)
C01B 17/965 Sulfur; Compounds thereof > Methods for the preparation of sulfates in general (particular individual sulfates, see the relevant groups of subclasses C01B - C01G, according to the cation)