• All sections
• C - Chemistrymetallurgy
• C10G - Cracking hydrocarbon oilsproduction of liquid hydrocarbon mixtures, e.g. by destructive hydrogenation, oligomerisation, polymerisationrecovery of hydrocarbon oils from oil-shale, oil-sand, or gasesrefining mixtures mainly consisting of hydrocarbonsreforming of naphthamineral waxes
• C10G 21/04 - Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents with two or more solvents, which are introduced or withdrawn separately by introducing simultaneously at least two immiscible solvents counter-current to each other

Patent holdings for IPC class C10G 21/04

Total number of patents in this class: 6

10-year publication summary

Principal owners for this class