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