CPC Main Group Additional Only
F23N 2227/00 Ignition or checking
16 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- F23N 2227/02 Starting or ignition cycles
- F23N 2227/04 Prepurge
- F23N 2227/06 Postpurge
- F23N 2227/08 Hold fire apparatus
- F23N 2227/10 Sequential burner running
- F23N 2227/12 Burner simulation or checking
- F23N 2227/18 Applying test signals, e.g. periodic
- F23N 2227/20 Calibrating devices
- F23N 2227/22 Pilot burners
- F23N 2227/28 Ignition circuits
- F23N 2227/32 Igniting for a predetermined number of cycles
- F23N 2227/34 Continuously applied ignition cycles
- F23N 2227/36 Spark ignition, e.g. by means of a high voltage
- F23N 2227/38 Electrical resistance ignition
- F23N 2227/40 Catalytic ignition
- F23N 2227/42 Ceramic glow ignition
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