IPC Subgroup
F23D 11/36 Details
Introduced: September 1968
Last revised: January 2006
Full Title
Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space > Details
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- COMBUSTION APPARATUS; COMBUSTION PROCESSES
- Subclass:
- BURNERS
5 direct subcodes
Child Classifications
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- F23D 11/38 Nozzles; Cleaning devices therefor
- F23D 11/4 Mixing tubes; Burner heads
- F23D 11/42 Starting devices
- F23D 11/44 Preheating devices; Vaporising devices
- F23D 11/46 Devices on the vaporiser for controlling the feeding of the fuel
Top Applicants
Top 10 applicants by patent filingsfor class F23, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 2,124
- XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 1,369
- NINGBO FOTILE KITCHENWARE COMPANY 1,363
- SIEMENS DE 997
- UNITED TECHNOLOGIES CORPORATION (UTC) US 937
- GE (GENERAL ELECTRIC COMPANY) 898
- VATTI 815
- CHINESE ACADEMY OF SCIENCES 719
- RINNAI COMPANY 708
- MITSUBISHI HITACHI POWER SYSTEMS 670