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CPC Subgroup
C10J 3/42

Rotary grates

Full Title

Production of combustible gases containing carbon monoxide from solid carbonaceous fuels (destructive distillation processes C10B) > Fixed-bed gasification of lump fuel > Apparatus; Plants > Grates; Mechanical ash-removing devices > Movable grates > Rotary grates

Filing statistics

CPC C10J 3/42 belongs to the parent subclass C10J, which recorded 14,655 patent applications worldwide between 2013 and 2023. Annual filings declined from 1,406 in 2013 to 1,145 in 2023 (-19%), peaking at 1,645 applications in 2016. The most active applicants in class C10 are SINOPEC (CHINA PETROCHEMICAL CORPORATION) (5,831 applications), SAUDI ARABIAN OIL COMPANY (2,918 applications) and IFPEN (IFP ENERGIES NOUVELLES) (2,305 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

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

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,831
  2. SAUDI ARABIAN OIL COMPANY SA 2,918
  3. IFPEN (IFP ENERGIES NOUVELLES) FR 2,305
  4. EXXONMOBIL RESEARCH AND ENGINEERING COMPANY US 2,282
  5. UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,268
  6. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NL 2,124
  7. BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,487
  8. CHEVRON CORPORATION US 1,400
  9. PETROCHINA COMPANY 1,372
  10. LUBRIZOL CORPORATION US 1,324