CPC Subgroup
B21K 1/48 Machines working with hammers, e.g. beating in a radial direction, for forming heads
Full Title
Making machine elements > bolts, studs, or the like (making screw-thread B21K1/56; making U-bolts B21K1/74) > with heads > Machines working with hammers, e.g. beating in a radial direction, for forming heads
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