IPC Main Group
F23H 13/00 Grates not covered by any of groups
Introduced: September 1968
Last revised: January 2021
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- COMBUSTION APPARATUS; COMBUSTION PROCESSES
- Subclass:
- GRATES; CLEANING OR RAKING GRATES
4 direct subcodes
Child Classifications
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- F23H 13/02 Basket grates, e.g. with shaking arrangement
- F23H 13/04 Telescoping grates
- F23H 13/06 Dumping grates
- F23H 13/08 Grates specially adapted for gas generators and also applicable to furnaces
Top Applicants
Top 10 applicants by patent filingsfor class F23, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 2,124
- XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY 1,369
- NINGBO FOTILE KITCHENWARE COMPANY 1,363
- SIEMENS DE 997
- UNITED TECHNOLOGIES CORPORATION (UTC) US 937
- GE (GENERAL ELECTRIC COMPANY) 898
- VATTI 815
- CHINESE ACADEMY OF SCIENCES 719
- RINNAI COMPANY 708
- MITSUBISHI HITACHI POWER SYSTEMS 670