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IPC Subgroup
F23D 11/1

the spraying being induced by a gaseous medium, e.g. water vapour

Introduced: September 1968

Last revised: January 2006

Full Title

Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space > the spraying being induced by a gaseous medium, e.g. water vapour

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
COMBUSTION APPARATUS; COMBUSTION PROCESSES
Subclass:
BURNERS

4 direct subcodes

Child Classifications

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  • F23D 11/16 in which an emulsion of water and fuel is sprayed
  • F23D 11/22 the gaseous medium being vaporised fuel, e.g. for a soldering lamp

Top Applicants

Top 10 applicants by patent filingsfor class F23, 2013–2023, worldwide · Source: EPO PATSTAT

  1. GE (GENERAL ELECTRIC COMPANY) US 2,124
  2. XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 1,369
  3. NINGBO FOTILE KITCHENWARE COMPANY 1,363
  4. SIEMENS DE 997
  5. UNITED TECHNOLOGIES CORPORATION (UTC) US 937
  6. GE (GENERAL ELECTRIC COMPANY) 898
  7. VATTI 815
  8. CHINESE ACADEMY OF SCIENCES 719
  9. RINNAI COMPANY 708
  10. MITSUBISHI HITACHI POWER SYSTEMS 670