IPC Main Group
F23G 5/00 Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- COMBUSTION APPARATUS; COMBUSTION PROCESSES
- Subclass:
- CREMATION FURNACES; CONSUMING WASTE OR LOW GRADE FUELS BY COMBUSTION
Filing statistics
IPC F23G 5/00 belongs to the parent subclass F23G, which recorded 62,605 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,172 in 2013 to 6,735 in 2023 (+210%), peaking at 9,407 applications in 2020. The most active applicants in class F23 are GE (GENERAL ELECTRIC COMPANY) (2,124 applications), XIAN THERMAL POWER RESEARCH INSTITUTE COMPANY (1,369 applications) and NINGBO FOTILE KITCHENWARE COMPANY (1,363 applications).
Source: EPO PATSTAT, worldwide filings
Additional Content
Incineration of specific waste
12 direct subcodes
Child Classifications
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- F23G 5/02 including pretreatment
- F23G 5/08 including supplementary heating
- F23G 5/2 with combustion in rotating or oscillating drums
- F23G 5/24 with combustion in a vertical, substantially cylindrical, combustion chamber
- F23G 5/3 with combustion in a fluidised bed
- F23G 5/32 in which the waste or low-grade fuel is subjected to a whirling movement, e.g. cyclonic incinerators
- F23G 5/34 in which the waste or low-grade fuel is burnt in a pit or arranged in a heap for combustion
- F23G 5/36 with combustion in a conical combustion chamber, e.g. "teepee" incinerators
- F23G 5/38 having multi-hearth arrangements
- F23G 5/4 Portable or mobile apparatus
- F23G 5/44 Details; Accessories
- F23G 5/5 Control or safety arrangements
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