IPC Main Group
B21D 5/00 Bending sheet metal along straight lines, e.g. to form simple curves
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
Additional Content
Corrugating sheet metal Bending sheet metal along straight lines as edge treatment
Related Keywords
press BRAKE(S) for bending metalPRESS(ES) brakes for bending metal
6 direct subcodes
Child Classifications
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- B21D 5/01 between rams and anvils or abutments
- B21D 5/02 on press brakes without making use of clamping means
- B21D 5/04 on brakes making use of clamping means on one side of the work
- B21D 5/06 by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D 5/14 by passing between rollers
- B21D 5/16 Folding; Pleating
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