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IPC Subclass
F22G

SUPERHEATING OF STEAM

Introduced: September 1968

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
STEAM GENERATION
Subclass:
SUPERHEATING OF STEAM

Description

F22G covers apparatus and methods for raising steam temperature above saturation point to improve thermodynamic efficiency in steam power systems. This includes superheater designs using heat exchange surfaces, control mechanisms for superheat temperature regulation, and integration with boiler units. The classification encompasses both convective and radiant heat transfer superheaters, as well as systems for attemperation (cooling) of excessively superheated steam. Adjacent classes F22B (steam boiler construction) and F22D (steam generation plant control) address boiler design and plant-level regulation respectively.

Related Keywords

superheating of STEAMSUPERHEATING of steam

4 direct subcodes

Child Classifications

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  • F22G 3/00 Steam superheaters characterised by constructional features; Details or component parts thereof

Top Applicants

Top 10 applicants by patent filingsfor class F22, 2013–2023, worldwide · Source: EPO PATSTAT

  1. XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 922
  2. MIURA COMPANY 416
  3. HARBIN BOILER COMPANY 390
  4. MITSUBISHI HITACHI POWER SYSTEMS 303
  5. XIAN JIAOTONG UNIVERSITY 287
  6. SGCC(STATE GRID CORPORATION OF CHINA) 257
  7. HUADIAN ELECTRIC POWER RESEARCH INSTITUTE 253
  8. SIEMENS DE 247
  9. MIDEA 243
  10. NORTH CHINA ELECTRIC POWER UNIVERSITY 223