CPC Main Group
B21B 37/00 Control devices or methods specially adapted for metal-rolling mills or the work produced thereby (methods or devices for measuring specially adapted for metal-rolling mills B21B38/00)
14 direct subcodes
Child Classifications
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- B21B 37/16 Control of thickness, width, diameter or other transverse dimensions (B21B37/58 takes precedence)
- B21B 37/28 Control of flatness or profile during rolling of strip, sheets or plates
- B21B 37/46 Roll speed or drive motor control (B21B37/52, B21B37/60 take precedence)
- B21B 37/48 Tension control; Compression control
- B21B 37/56 Elongation control
- B21B 37/58 Roll-force control; Roll-gap control
- B21B 37/68 Camber or steering control for strip, sheets or plates, e.g. preventing meandering
- B21B 37/70 Length control (B21B37/56 takes precedence)
- B21B 37/72 Rear end control; Front end control
- B21B 37/74 Temperature control, e.g. by cooling or heating the rolls or the product (B21B37/32, B21B37/44 take precedence)
- B21B 37/78 Control of tube rolling
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