IPC Class
F22 STEAM GENERATION
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- STEAM GENERATION
Description
F22 encompasses the design, construction, and operation of steam generators and boilers used to produce steam for power generation, heating, and industrial processes. This class covers water-tube and fire-tube boilers, superheaters, economizers, and associated auxiliary equipment for converting thermal energy into steam. It includes combustion systems, heat recovery mechanisms, and control devices integral to steam generation plants, excluding steam engines and turbines themselves (covered in F01) and the utilization of generated steam in specific applications (covered in downstream classes).
Related Keywords
generation of STEAMgeneration of VAPOUR(S)
3 direct subcodes
Child Classifications
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- F22B METHODS OF STEAM GENERATION; STEAM BOILERS
- F22D PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22G SUPERHEATING OF STEAM
Top Applicants
Top 10 applicants by patent filings, 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