C10N INDEXING SCHEME ASSOCIATED WITH SUBCLASS
Introduced: January 1985
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
Description
C10N is an indexing and classification scheme used to organize and cross-reference patents within the petroleum, gas, coke, and lubricants sector (subclass C10). It provides a structured framework for categorizing inventions related to fossil fuel extraction, processing, refining, fuel production, and lubricant formulation. This indexing scheme facilitates systematic retrieval and navigation of technical disclosures across the broad C10 technology domain by establishing logical groupings and terminology standards. Patent examiners and researchers use C10N to locate relevant prior art and identify the specific technical aspects of fuel and lubricant-related innovations.
8 direct subcodes
Child Classifications
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- C10N 10/00 Metal present as such or in compounds
- C10N 20/00 Specified physical properties of component of lubricating compositions
- C10N 30/00 Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N 40/00 Specified use or application for which the lubricating composition is intended
- C10N 50/00 Form in which the lubricant is applied to the material being lubricated
- C10N 60/00 Chemical after-treatment of the constituents of the lubricating composition
- C10N 70/00 Special methods of preparation
- C10N 80/00 Special pretreatment of the material to be lubricated, e.g. phosphatising or chromatising of a metal