CPC Subgroup
C10G 27/12 with oxygen-generating compounds, e.g. per-compounds, chromic acid, chromates (plumbites or plumbates C10G19/06)
Full Title
Refining of hydrocarbon oils in the absence of hydrogen, by oxidation > with oxygen or compounds generating oxygen > with oxygen-generating compounds, e.g. per-compounds, chromic acid, chromates (plumbites or plumbates C10G19/06)