C10N INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
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 2010/00 Metal present as such or in compounds
- C10N 2020/00 Specified physical of component of lubricating compositions
- C10N 2030/00 Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N 2040/00 Specified use or application for which the lubricating composition is intended
- C10N 2050/00 Form in which the lubricant is applied to the material being lubricated
- C10N 2060/00 Chemical after-treatment of the constituents of the lubricating composition
- C10N 2070/00 Specific manufacturing methods for lubricant compositions
- C10N 2080/00 Special pretreatment of the material to be lubricated, e.g. phosphatising or chromatising of a metal
Top Applicants
Top 10 applicants by patent filingsfor class C10, 2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,831
- SAUDI ARABIAN OIL COMPANY SA 2,918
- IFPEN (IFP ENERGIES NOUVELLES) FR 2,305
- EXXONMOBIL RESEARCH AND ENGINEERING COMPANY US 2,282
- UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,268
- SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NL 2,124
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,487
- CHEVRON CORPORATION US 1,400
- PETROCHINA COMPANY 1,372
- LUBRIZOL CORPORATION US 1,324