B21D 28/02 Punching blanks or articles with or without obtaining scrap (cutting nails or pins from strips or sheet material B21G3/26); Notching
Full Title
Shaping by press-cutting; Perforating > Punching blanks or articles with or without obtaining scrap (cutting nails or pins from strips or sheet material B21G3/26); Notching
Filing statistics
CPC B21D 28/02 belongs to the parent subclass B21D, which recorded 119,625 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,189 in 2013 to 10,326 in 2023 (+67%), peaking at 14,303 applications in 2020. The most active applicants in class B21 are JFE STEEL (2,667 applications), NIPPON STEEL CORPORATION (2,049 applications) and POSCO (POHANG IRON AND STEEL COMPANY) (1,967 applications).
Source: EPO PATSTAT, worldwide filings
9 direct subcodes
Child Classifications
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- B21D 28/04 Centering the work; Positioning the tools
- B21D 28/06 Making more than one part out of the same blank; Scrapless working
- B21D 28/10 Incompletely punching in such a manner that the parts are still coherent with the work
- B21D 28/12 Punching using rotatable carriers
- B21D 28/14 Dies (ejecting or stripping-off devices arranged in punching machines or tools B21D45/00)
- B21D 28/16 Shoulder or burr prevention
- B21D 28/18 Yieldable, e.g. rubber, punching pads
- B21D 28/20 Applications of drives
- B21D 28/22 Notching the peripheries of circular blanks, e.g. laminations for dynamo-electric machines
Top Applicants
Top 10 applicants by patent filingsfor 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