CPC Main Group Additional Only
F23N 2227/00 Ignition or checking
Filing statistics
CPC F23N 2227/00 belongs to the parent subclass F23N, which recorded 13,537 patent applications worldwide between 2013 and 2023. Annual filings declined from 1,173 in 2013 to 1,139 in 2023 (-3%), peaking at 1,525 applications in 2020. The most active applicants in class F23 are GE (GENERAL ELECTRIC COMPANY) (2,581 applications), UNITED TECHNOLOGIES CORPORATION (UTC) (1,180 applications) and SIEMENS (1,157 applications).
Source: EPO PATSTAT, worldwide filings
16 direct subcodes
Child Classifications
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- 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