IPC Subgroup
B21B 39/02 Feeding or supporting work; Braking or tensioning arrangements
Introduced: September 1968
Last revised: January 2006
Full Title
Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills > Feeding or supporting work; Braking or tensioning arrangements
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- ROLLING OF METAL
5 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- B21B 39/04 Lifting or lowering work for conveying purposes, e.g. tilting tables arranged immediately in front of or behind the pass
- B21B 39/06 Pushing or forcing work into pass
- B21B 39/08 Braking or tensioning arrangements
- B21B 39/1 Arrangement or installation of feeding rollers in rolling stands
- B21B 39/12 Arrangement or installation of roller tables in relation to a roll stand
Top Applicants
Top 10 applicants by patent filingsfor class B21, 2013–2023, worldwide · Source: EPO PATSTAT
- JFE STEEL 2,318
- JFE STEEL JP 2,294
- POSCO (POHANG IRON AND STEEL COMPANY) KR 2,083
- NIPPON STEEL CORPORATION JP 1,650
- NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 1,631
- SMS GROUP DE 1,472
- BAOSHAN IRON & STEEL COMPANY 1,181
- SGCC(STATE GRID CORPORATION OF CHINA) 1,079
- ANHUI JIANGHUAI AUTOMOBILE 984
- HYUNDAI STEEL COMPANY KR 980