CPC Main Group
B21G 3/00 Making pins, nails, or the like (of pins with individual caps B21G5/00; of U-like shape B21G7/00; of split-pins B21G7/08)
Filing statistics
CPC B21G 3/00 belongs to the parent subclass B21G, which recorded 855 patent applications worldwide between 2013 and 2023. Annual filings grew from 47 in 2013 to 48 in 2023 (+2%), peaking at 118 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
10 direct subcodes
Child Classifications
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- B21G 3/02 of pins of the kind used in the tailoring trade or the house- hold
- B21G 3/06 of nails with shoulders
- B21G 3/08 of nails with head and two or more shanks or split shanks
- B21G 3/10 of undulated nails or pins
- B21G 3/12 Upsetting; Forming heads
- B21G 3/14 Reducing diameter of parts otherwise than by rolling
- B21G 3/16 Pointing; with or without cutting
- B21G 3/18 by operations not restricted to one of the groups B21G3/12 - B21G3/16 (B21G3/06 - B21G3/10 take precedence)
- B21G 3/32 Feeding material to be worked to nail or pin making 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