DIFF Main Group
B21F 45/00 Wire-working in the manufacture of other particular articles (of pins, needles, nails, hairpins B21G; of chains B21L)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Wire-working in the manufacture of other particular articles
CPC: Wire-working in the manufacture of other particular articles (of pins, needles, nails, hairpins B21G; of chains B21L)
Full Title
Full titles differ between systems:
IPC:
Wire-working in the manufacture of other particular articles
CPC:
Wire-working in the manufacture of other particular articles (of pins, needles, nails, hairpins B21G; of chains B21L)
Of 12 combined children, 8 exist in both systems.
4 codes are CPC-only extensions.
Child Classifications
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- B21F 45/06 of flexible shafts or hollow conduits, e.g. for Bowden mechanisms 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