CPC Main Group Additional Only
F27M 2003/00 Type of treatment of the charge
19 direct subcodes
Child Classifications
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- F27M 2003/01 Annealing
- F27M 2003/02 Preheating, e.g. in a laminating line
- F27M 2003/03 Calcining
- F27M 2003/04 Sintering
- F27M 2003/05 Brazing
- F27M 2003/06 Enamelling
- F27M 2003/07 Carburising
- F27M 2003/08 Curing; Baking
- F27M 2003/09 Expanding the charge, e.g. clay
- F27M 2003/10 Soaking
- F27M 2003/11 Incineration
- F27M 2003/12 Reactivation of particles, e.g. carbon
- F27M 2003/13 Smelting
- F27M 2003/14 Pyrolising
- F27M 2003/15 Vaporisation
- F27M 2003/16 Treatment involving a chemical reaction
- F27M 2003/17 Coating
- F27M 2003/18 Degasifying
- F27M 2003/19 Dipping in a salt bath
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