CPC Subgroup
F22B 1/02 by exploitation of the heat content of hot heat carriers
Full Title
Methods of steam generation characterised by form of heating method > by exploitation of the heat content of hot heat carriers
8 direct subcodes
Child Classifications
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- F22B 1/04 the heat carrier being hot slag, hot residues, or heated blocks, e.g. iron blocks
- F22B 1/06 the heat carrier being molten; Use of molten metal, e.g. zinc, as heat transfer medium
- F22B 1/08 the heat carrier being steam
- F22B 1/16 the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour
- F22B 1/18 the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
Top Applicants
Top 10 applicants by patent filingsfor class F22, 2013–2023, worldwide · Source: EPO PATSTAT
- XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 544
- SIEMENS DE 306
- PHILIP MORRIS PRODUCTS CH 258
- GENERAL ELECTRIC TECHNOLOGY CH 254
- MITSUBISHI HITACHI POWER SYSTEMS JP 235
- XIAN JIAOTONG UNIVERSITY 214
- MITSUBISHI HEAVY INDUSTRIES JP 195
- MITSUBISHI HITACHI POWER SYSTEMS 169
- HARBIN BOILER COMPANY 166
- VALMET TECHNOLOGIES FI 155