IPC Main Group
B21F 45/00 Wire-working in the manufacture of other particular articles
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 METAL WIRE
8 direct subcodes
Child Classifications
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- B21F 45/02 of clothes hangers
- B21F 45/04 of elements, e.g. levers or links, for bottle stoppers
- B21F 45/06 of flexible shafts or hollow conduits, e.g. for Bowden mechanisms
- B21F 45/08 of loom heddles
- B21F 45/1 of cards for fabric-napping machines
- B21F 45/12 of fishing hooks
- B21F 45/14 of end-pieces for laces or ropes
- B21F 45/16 of devices for fastening or securing purposes
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