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CPC Subgroup
F23D 1/02

Vortex burners, e.g. for cyclone-type combustion apparatus

Full Title

Burners for combustion of pulverulent fuel > Vortex burners, e.g. for cyclone-type combustion apparatus

Filing statistics

CPC F23D 1/02 belongs to the parent subclass F23D, which recorded 25,989 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,982 in 2013 to 2,106 in 2023 (+6%), peaking at 2,887 applications in 2018. The most active applicants in class F23 are GE (GENERAL ELECTRIC COMPANY) (2,581 applications), UNITED TECHNOLOGIES CORPORATION (UTC) (1,180 applications) and SIEMENS (1,157 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor class F23, 2013–2023, worldwide · Source: EPO PATSTAT

  1. GE (GENERAL ELECTRIC COMPANY) US 2,581
  2. UNITED TECHNOLOGIES CORPORATION (UTC) US 1,180
  3. SIEMENS DE 1,157
  4. GE (GENERAL ELECTRIC COMPANY) 994
  5. XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 769
  6. MITSUBISHI HEAVY INDUSTRIES JP 701
  7. MITSUBISHI HITACHI POWER SYSTEMS JP 695
  8. RAYTHEON TECHNOLOGIES CORPORATION US 587
  9. NINGBO FOTILE KITCHENWARE COMPANY 543
  10. GENERAL ELECTRIC TECHNOLOGY CH 490