CPC Subgroup
F23H 11/18 Details
Full Title
Travelling-grates > Details
Filing statistics
CPC F23H 11/18 belongs to the parent subclass F23H, which recorded 1,339 patent applications worldwide between 2013 and 2023. Annual filings grew from 99 in 2013 to 110 in 2023 (+11%), peaking at 196 applications in 2020. The most active applicants in class F23 are GE (GENERAL ELECTRIC COMPANY) (2,581 applications), UNITED TECHNOLOGIES CORPORATION (UTC) (1,180 applications) and SIEMENS (1,157 applications).
Source: EPO PATSTAT, worldwide filings
4 direct subcodes
Child Classifications
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- F23H 11/20 Driving-means
- F23H 11/22 Moving fuel along grate; Cleaning of grate
- F23H 11/24 Removal of ashes; Removal of clinker
- F23H 11/28 Replaceable burning-surface
Top Applicants
Top 10 applicants by patent filingsfor class F23, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 2,581
- UNITED TECHNOLOGIES CORPORATION (UTC) US 1,180
- SIEMENS DE 1,157
- GE (GENERAL ELECTRIC COMPANY) 994
- XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 769
- MITSUBISHI HEAVY INDUSTRIES JP 701
- MITSUBISHI HITACHI POWER SYSTEMS JP 695
- RAYTHEON TECHNOLOGIES CORPORATION US 587
- NINGBO FOTILE KITCHENWARE COMPANY 543
- GENERAL ELECTRIC TECHNOLOGY CH 490