CPC Main Group
F27D 11/00 Arrangement of elements for electric heating in or on furnaces
4 direct subcodes
Child Classifications
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- F27D 11/02 Ohmic resistance heating
- F27D 11/06 Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
- F27D 11/08 Heating by electric discharge, e.g. arc discharge
- F27D 11/12 with electromagnetic fields acting directly on the material being heated
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