Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
IPC Main Group
F23H 11/00

Travelling grates

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:
COMBUSTION APPARATUS; COMBUSTION PROCESSES
Subclass:
GRATES; CLEANING OR RAKING GRATES

9 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • F23H 11/02 with the bars disposed on transverse bearers
  • F23H 11/04 with the bars pivoted at one side
  • F23H 11/06 with the bars movable relatively to one another
  • F23H 11/08 with several individually-movable grate surfaces
  • F23H 11/1 with special provision for supply of air from below and for controlling air supply
  • F23H 11/12 inclined travelling grates; Stepped travelling grates
  • F23H 11/14 serving as auxiliary grates
  • F23H 11/16 for multi-layer stoking

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