F23M 20/00 Details of combustion chambers, not otherwise provided for
Introduced: January 2014
Additional Content IPC
Details of steam boilers , e.g. Mounting or disposition of burners Supplying air or non-combustible liquids or gases , Details of fluidised bed combustion apparatus Burners Details specially adapted for apparatus for combustion of waste or low-grade fuels, e.g. incinerators Grates; Cleaning or raking grates Removal or treatment of combustion products or combustion residues Feeding fuel Casings, linings, walls or doors - Devices for deflecting air, flames or combustion products Safety arrangements Ignition Details of stoves or ranges burning solid fuels , Details of stoves or ranges burning fuels other than solid fuels , e.g. Details of fluid heaters, e.g., heating boilers Details of furnaces, kilns, ovens or retorts ,
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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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