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IPC Main Group
F23M 11/00

Safety arrangements

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
COMBUSTION APPARATUS; COMBUSTION PROCESSES
Subclass:
CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR

Filing statistics

IPC F23M 11/00 belongs to the parent subclass F23M, which recorded 8,715 patent applications worldwide between 2013 and 2023. Annual filings grew from 534 in 2013 to 934 in 2023 (+75%), peaking at 1,109 applications in 2020. The most active applicants in class F23 are GE (GENERAL ELECTRIC COMPANY) (2,124 applications), XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY (1,369 applications) and NINGBO FOTILE KITCHENWARE COMPANY (1,363 applications).

Source: EPO PATSTAT, worldwide filings

Additional Content

Applications, arrangements, or dispositions of automatic safety devices in steam boilers Safety arrangements in apparatus specially adapted for combustion of waste or low-grade fuels, e.g. incinerators Arrangement or mounting of safety devices in domestic stoves or ranges for gaseous fuels Arrangement or mounting of safety devices in domestic stoves or ranges for liquid fuels Arrangement or mounting of safety devices in fluid heaters, e.g. heating boilers Arrangement of safety devices in furnaces, kilns, ovens or retorts

2 direct subcodes

Child Classifications

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  • F23M 11/02 Preventing emission of flames or hot gases, or admission of air, through working or charging apertures
  • F23M 11/04 Means for supervising combustion, e.g. windows

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