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IPC Subgroup
F23C 5/08

Disposition of burners

Introduced: September 1968

Last revised: January 2006

Full Title

Combustion apparatus characterised by the arrangement or mounting of burners > Disposition of burners

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
COMBUSTION APPARATUS; COMBUSTION PROCESSES
Subclass:
METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN AIR

4 direct subcodes

Child Classifications

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  • F23C 5/14 to obtain a single flame of concentrated or substantially planar form, e.g. pencil or sheet flame
  • F23C 5/24 to obtain a loop flame
  • F23C 5/28 to obtain flames in opposing directions, e.g. impacting flames
  • F23C 5/32 to obtain rotating flames, i.e. flames moving helically or spirally

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