CPC Subgroup
B21D 53/50 metal slide-fastener parts
Full Title
Making other particular articles (making wire fabrics B21F; making chains or chain parts B21L) > haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples > metal slide-fastener parts
3 direct subcodes
Child Classifications
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- B21D 53/52 fastener elements; Attaching such elements so far as this procedure is combined with the process for making the elements
- B21D 53/54 slides
- B21D 53/56 stops
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