IPC Main Group
F23B 40/00 Combustion apparatus with driven means for feeding fuel into the combustion chamber
Introduced: January 2006
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- COMBUSTION APPARATUS; COMBUSTION PROCESSES
- Subclass:
- METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
3 direct subcodes
Child Classifications
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- F23B 40/02 the fuel being fed by scattering over the fuel-supporting surface
- F23B 40/04 the fuel being fed from below through an opening in the fuel-supporting surface
- F23B 40/06 the fuel being fed along the fuel-supporting surface
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