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CPC Main Group Additional Only
F23N 2900/00

Special features of, or arrangements for controlling combustion

10 direct subcodes

Child Classifications

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  • F23N 2900/01001 Micro Electro Mechanical Systems [MEMS] for controlling fuel supply to burners
  • F23N 2900/01002 Electromagnetically operated fuel valves with a single solenoid controlling two or more cores
  • F23N 2900/05001 Measuring CO content in flue gas
  • F23N 2900/05002 Measuring CO2 content in flue gas
  • F23N 2900/05003 Measuring NOx content in flue gas
  • F23N 2900/05004 Details of components, e.g. connecting adaptors
  • F23N 2900/05005 Mounting arrangements for sensing, detecting or measuring devices
  • F23N 2900/05006 Controlling systems using neuronal networks
  • F23N 2900/05101 Connections between thermocouple and magnetic valves, e.g. by plug and socket connectors
  • F23N 2900/05181 Controlling air to fuel ratio by using a single differential pressure detector

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