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DIFF Subgroup
F23H 9/10

and modified to move fuel along the grate

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Revolving grates; Rocking or shaking grates > the bars being rocked about their longitudinal axes > and modified to move fuel along the grate

CPC:

Revolving-grates; Rocking or shaking grates (inclined grates F23H7/00) > the bars being rocked about their longitudinal axes (inclined grates with movable bars disposed parallel to the direction of fuel feeding and rocking about their axes F23H7/10) > and modified to move fuel along the grate

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