IPC Subgroup
C10N 20/02 Viscosity; Viscosity index
Introduced: January 1985
Last revised: January 2006
Full Title
Specified physical properties of component of lubricating compositions > Viscosity; Viscosity index
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- Subclass:
- INDEXING SCHEME ASSOCIATED WITH SUBCLASS