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CPC Main Group
F23J 1/00

Removing ash, clinker, or slag from combustion chambers ( devices for removal of material from the bed of fluidised bed combustion apparatus F23C10/24)

4 direct subcodes

Child Classifications

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  • F23J 1/02 Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices
  • F23J 1/04 Hand tools, e.g. rakes, prickers, tongs
  • F23J 1/06 Mechanically-operated devices, e.g. clinker pushers (forming part of the grate F23H)
  • F23J 1/08 Liquid slag removal

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