B21D 11/00 Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00 (corrugating or bending into wave form B21D13/00, B21D15/00; flanging B21D19/00); Twisting
Introduced: September 1968
Title
Titles differ between systems:
IPC: Bending not restricted to forms of material mentioned in only one of groups , ,; Bending not provided for in groups; Twisting
CPC: Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00 (corrugating or bending into wave form B21D13/00, B21D15/00; flanging B21D19/00); Twisting
Full Title
Full titles differ between systems:
Bending not restricted to forms of material mentioned in only one of groups , ,; Bending not provided for in groups; Twisting
Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00 (corrugating or bending into wave form B21D13/00, B21D15/00; flanging B21D19/00); Twisting
Additional Content IPC
Corrugating or bending into wave form , Flanging
IPC and CPC are identically structured here. All 8 subcodes exist in both systems.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B21D 11/02 Bending by stretching or pulling over a die (working sheet metal of limited length by stretching B21D25/00) IPC+CPC Available in IPC and CPC
- B21D 11/06 Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form (making helically seamed tubing B21C37/12) IPC+CPC Available in IPC and CPC
- B21D 11/08 Bending by altering the thickness of part of the cross-section of the work (B21D11/06 takes precedence) +1 CPC IPC+CPC Available in IPC and CPC
- B21D 11/10 Bending specially adapted to produce specific articles, e.g. leaf springs IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
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