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CPC Subclass Not Allocatable
F23K

FEEDING FUEL TO COMBUSTION APPARATUS (fuel feeders specially adapted for fluidised bed combustion apparatus F23C10/22)

Description

F23K covers fuel supply systems and mechanisms for delivering solid, liquid, or gaseous fuels into combustion chambers of furnaces, boilers, engines, and similar equipment. This subclass includes fuel feeding devices such as injectors, burners, stokers, and fuel metering systems, as well as related control and regulation mechanisms for managing fuel flow rates and distribution. The classification excludes fuel preparation and treatment processes (covered under F23D) and focuses specifically on the mechanical and functional aspects of fuel introduction into the combustion zone.

9 direct subcodes

Child Classifications

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  • F23K 2200/00 Pretreatment and supply of solid fuel

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