Recovery of petroleum waxes from hydrocarbon oils; De-waxing of hydrocarbon oils

Introduced: January 1980

Last revised: January 2006

Full Title

Recovery or refining of mineral waxes, e.g. montan wax > Recovery of petroleum waxes from hydrocarbon oils; De-waxing of hydrocarbon oils

Classification Context

Section:: CHEMISTRY; METALLURGY
Class:: PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
Subclass:: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES

Filing statistics

IPC C10G 73/02 belongs to the parent subclass C10G, which recorded 76,796 patent applications worldwide between 2013 and 2023. Annual filings declined from 7,115 in 2013 to 6,453 in 2023 (-9%), peaking at 7,457 applications in 2020. The most active applicants in class C10 are SINOPEC (CHINA PETROCHEMICAL CORPORATION) (8,875 applications), SAUDI ARABIAN OIL COMPANY (2,245 applications) and PETROCHINA COMPANY (2,028 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

DEWAXING of hydrocarbon oilsDE-WAXING of hydrocarbon oils

8 direct subcodes

Child Classifications

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C10G 73/04 with the use of filter aids
C10G 73/06 with the use of solvents
C10G 73/24 by formation of adducts
C10G 73/26 by flotation
C10G 73/28 by centrifugal force
C10G 73/3 with electric means
C10G 73/32 Methods of cooling during de-waxing
C10G 73/34 Controlling or regulating

Top Applicants

Top 10 applicants by patent filingsfor class C10, 2013–2023, worldwide · Source: EPO PATSTAT

SINOPEC (CHINA PETROCHEMICAL CORPORATION) 8,875
SAUDI ARABIAN OIL COMPANY SA 2,245
PETROCHINA COMPANY 2,028
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY US 1,980
IFPEN (IFP ENERGIES NOUVELLES) FR 1,963
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NL 1,878
CHINESE ACADEMY OF SCIENCES 1,829
UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 1,787
LUBRIZOL CORPORATION US 1,277
BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,268