DIFF Subgroup
F22B 1/02 by exploitation of the heat content of hot heat carriers
Introduced: September 1968
Full Title
Methods of steam generation characterised by form of heating method > by exploitation of the heat content of hot heat carriers
Of 8 combined children, 5 exist in both systems.
3 codes are CPC-only extensions.
Child Classifications
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- F22B 1/04 the heat carrier being hot slag, hot residues, or heated blocks, e.g. iron blocks IPC+CPC Available in IPC and CPC
- F22B 1/06 the heat carrier being molten; Use of molten metal, e.g. zinc, as heat transfer medium +1 CPC IPC+CPC Available in IPC and CPC
- F22B 1/16 the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour +3 CPC IPC+CPC Available in IPC and CPC
- F22B 1/18 the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines +9 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class F22,2013–2023, worldwide · Source: EPO PATSTAT
- XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 922
- MIURA COMPANY 416
- HARBIN BOILER COMPANY 390
- MITSUBISHI HITACHI POWER SYSTEMS 303
- XIAN JIAOTONG UNIVERSITY 287
- SGCC(STATE GRID CORPORATION OF CHINA) 257
- HUADIAN ELECTRIC POWER RESEARCH INSTITUTE 253
- SIEMENS DE 247
- MIDEA 243
- NORTH CHINA ELECTRIC POWER UNIVERSITY 223
Top Applicants (CPC)
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