CPC Main Group
F23D 14/00 Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
10 direct subcodes
Child Classifications
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- F23D 14/02 Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D 14/12 Radiant burners
- F23D 14/20 Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone (F23D14/38 takes precedence)
- F23D 14/26 with provision for a retention flame (pilot flame igniters F23Q9/00)
- F23D 14/28 in association with a gaseous fuel source, e.g. acetylene generator, or a container for liquefied gas
- F23D 14/30 Inverted burners, e.g. for illumination
- F23D 14/32 using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air (F23D14/38 takes precedence)
- F23D 14/34 Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
- F23D 14/38 Torches, e.g. for brazing or heating (nozzles F23D14/48)
- F23D 14/46 Details
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