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
Filing statistics
IPC B21F 45/00 belongs to the parent subclass B21F, which recorded 67,229 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,053 in 2013 to 9,443 in 2023 (+360%), peaking at 10,492 applications in 2020. The most active applicants in class B21 are JFE STEEL (2,318 applications), JFE STEEL (2,294 applications) and POSCO (POHANG IRON AND STEEL COMPANY) (2,083 applications).
Source: EPO PATSTAT, worldwide filings
8 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- 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