Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
F23C 9/06

for completing combustion

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber > for completing combustion

CPC:

Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber (fluidised bed combustion apparatus with means for recirculation of particles entrained from the bed F23C10/02; fluidised bed combustion apparatus with devices for removal and partial reintroduction of material from the bed F23C10/26) > for completing combustion

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class F23,2013–2023, worldwide · Source: EPO PATSTAT

  1. GE (GENERAL ELECTRIC COMPANY) US 2,581
  2. UNITED TECHNOLOGIES CORPORATION (UTC) US 1,180
  3. SIEMENS DE 1,157
  4. GE (GENERAL ELECTRIC COMPANY) 994
  5. XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 769
  6. MITSUBISHI HEAVY INDUSTRIES JP 701
  7. MITSUBISHI HITACHI POWER SYSTEMS JP 695
  8. RAYTHEON TECHNOLOGIES CORPORATION US 587
  9. NINGBO FOTILE KITCHENWARE COMPANY 543
  10. GENERAL ELECTRIC TECHNOLOGY CH 490