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IPC Subgroup
C10B 39/04

Wet quenching

Introduced: September 1968

Last revised: January 2006

Full Title

Cooling or quenching coke > Wet quenching

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
Subclass:
DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS

Filing statistics

IPC C10B 39/04 belongs to the parent subclass C10B, which recorded 36,200 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,511 in 2013 to 3,734 in 2023 (+49%), peaking at 3,993 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

2 direct subcodes

Child Classifications

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Top Applicants

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

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