F27B 3/10 Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
Full Title
Hearth-type furnaces, e.g. of reverberatory type (F27B9/00, F27B11/00, F27B13/00, F27B14/00, F27B15/00, F27B21/00 take precedence); Electric arc furnaces > Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
Filing statistics
CPC F27B 3/10 belongs to the parent subclass F27B, which recorded 32,315 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,277 in 2013 to 3,505 in 2023 (+54%), peaking at 3,686 applications in 2020. The most active applicants in class F27 are POSCO (POHANG IRON AND STEEL COMPANY) (930 applications), JFE STEEL (771 applications) and PAUL WURTH (518 applications).
Source: EPO PATSTAT, worldwide filings
9 direct subcodes
Child Classifications
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- F27B 3/12 Working chambers or casings; Supports therefor
- F27B 3/18 Arrangements of devices for charging
- F27B 3/19 Arrangements of devices for discharging
- F27B 3/20 Arrangements of heating devices
- F27B 3/22 Arrangements of air or gas supply devices
- F27B 3/24 Cooling arrangements
- F27B 3/26 Arrangements of heat-exchange apparatus
- F27B 3/28 Arrangement of controlling, monitoring, alarm or the like devices
Top Applicants
Top 10 applicants by patent filingsfor class F27, 2013–2023, worldwide · Source: EPO PATSTAT
- POSCO (POHANG IRON AND STEEL COMPANY) KR 930
- JFE STEEL JP 771
- PAUL WURTH LU 518
- OUTOTEC (FINLAND) FI 436
- THYSSEN KRUPP DE 422
- REFRACTORY INTELLECTUAL PROPERTY & COMPANY AT 370
- THYSSENKRUPP INDUSTRIAL SOLUTIONS DE 341
- JFE STEEL 323
- PRIMETALS TECHNOLOGIES AUSTRIA AT 310
- ZHONGYE CHANGTIAN INTERNATIONAL ENGINEERING COMPANY 299