CPC Main Group
F23J 1/00 Removing ash, clinker, or slag from combustion chambers ( devices for removal of material from the bed of fluidised bed combustion apparatus F23C10/24)
4 direct subcodes
Child Classifications
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- F23J 1/02 Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices
- F23J 1/04 Hand tools, e.g. rakes, prickers, tongs
- F23J 1/06 Mechanically-operated devices, e.g. clinker pushers (forming part of the grate F23H)
- F23J 1/08 Liquid slag removal
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