CPC Subgroup
F27B 7/20 Details, accessories or equipment specially adapted for rotary-drum furnaces
Full Title
Rotary-drum furnaces, i.e. horizontal or slightly inclined > Details, accessories or equipment specially adapted for rotary-drum furnaces
15 direct subcodes
Child Classifications
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- F27B 7/22 Rotary drums; Supports therefor
- F27B 7/26 Drives
- F27B 7/28 Arrangements of linings
- F27B 7/30 Arrangements of partitions
- F27B 7/32 Arrangement of devices for charging
- F27B 7/33 Arrangement of devices for discharging
- F27B 7/34 Arrangements of heating devices
- F27B 7/36 Arrangements of air or gas supply devices
- F27B 7/38 Arrangements of cooling devices
- F27B 7/42 Arrangement of controlling, monitoring, alarm or 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