CPC Main Group
B21B 13/00 Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories (B21B17/00 - B21B23/00 take precedence)
12 direct subcodes
Child Classifications
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- B21B 13/02 with axes of rolls arranged horizontally
- B21B 13/06 with axes of rolls arranged vertically
- B21B 13/08 with differently-directed roll axes, e.g. for the so-called "universal" rolling process
- B21B 13/14 having counter-pressure devices acting on rolls to inhibit deflection of same under load; (counter-pressure devices as such B21B29/00)
- B21B 13/16 with alternatively operative rolls
- B21B 13/18 for step-by-step or planetary rolling; (methods B21B1/42; making tubes by pilgrim-step rolling B21B21/00)
- B21B 13/22 for rolling metal immediately subsequent to continuous casting, (methods therefor B21B1/46; continuous casting B22D11/00, e.g. into moulds with rolls B22D11/06)
Top Applicants
Top 10 applicants by patent filingsfor class B21, 2013–2023, worldwide · Source: EPO PATSTAT
- JFE STEEL JP 2,667
- NIPPON STEEL CORPORATION JP 2,049
- POSCO (POHANG IRON AND STEEL COMPANY) KR 1,967
- NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 1,800
- SMS GROUP DE 1,538
- JFE STEEL 1,150
- ARCELORMITTAL LU 1,142
- BAOSHAN IRON & STEEL COMPANY 821
- HYUNDAI STEEL COMPANY KR 808
- THYSSENKRUPP STEEL EUROPE DE 660