CPC Main Group Additional Only
F23N 2241/00 Applications
12 direct subcodes
Child Classifications
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- F23N 2241/02 Space-heating
- F23N 2241/04 Heating water
- F23N 2241/06 Space-heating and heating water
- F23N 2241/08 Household apparatus
- F23N 2241/10 Generating vapour
- F23N 2241/11 Torches
- F23N 2241/12 Stack-torches
- F23N 2241/14 Vehicle heating, the heat being derived otherwise than from the propulsion plant
- F23N 2241/16 Spectrometer burners
- F23N 2241/18 Incinerating apparatus
- F23N 2241/20 Gas turbines
- F23N 2241/22 Absorption refrigerator
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