F23R 3/16 with devices inside the flame tube or the combustion chamber to influence the air or gas flow
Introduced: January 1980
Full Title
Full titles differ between systems:
Continuous combustion chambers using liquid or gaseous fuel > characterised by the air-flow or gas-flow configuration > with devices inside the flame tube or the combustion chamber to influence the air or gas flow
Continuous combustion chambers using liquid or gaseous fuel > characterised by the air-flow or gas-flow configuration (reverse- flow combustion chambers F23R3/54; cyclone or vortex type combustion chambers F23R3/58) > with devices inside the flame tube or the combustion chamber to influence the air or gas flow
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1980.
Child Classifications
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- F23R 3/18 Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants since 1980 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
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