CPC Main Group Additional Only
B21B 2203/00 Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
22 direct subcodes
Child Classifications
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- B21B 2203/02 Backlash elimination
- B21B 2203/04 Brakes
- B21B 2203/06 Cassettes
- B21B 2203/08 Clutches
- B21B 2203/10 Counterweights
- B21B 2203/12 Covers or shieldings
- B21B 2203/14 Dummy bars or slabs
- B21B 2203/16 Eccentrics
- B21B 2203/18 Rolls or rollers
- B21B 2203/20 Flywheels
- B21B 2203/22 Hinged chocks
- B21B 2203/24 Hydrostatic bearings or guides
- B21B 2203/26 Motors, drives
- B21B 2203/28 Mounting or dismounting bearing and chock as a unit
- B21B 2203/30 Quick or bayonet couplings
- B21B 2203/32 Roll changing stools
- B21B 2203/34 Rotational position or alignment
- B21B 2203/36 Spacers
- B21B 2203/38 Strain gauges
- B21B 2203/40 Torsion bars or shafts
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