Regulating or controlling the blowing

Full Title

Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel > Manufacture of steel in the converter > Regulating or controlling the blowing

4 direct subcodes

Child Classifications

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C21C 5/305
C21C 5/32 Blowing from above (C21C5/35 takes precedence)
C21C 5/34 Blowing through the bath (C21C5/35 takes precedence)
C21C 5/35 Blowing from above and through the bath

Top Applicants

Top 10 applicants by patent filingsfor class C21, 2013–2023, worldwide · Source: EPO PATSTAT

JFE STEEL JP 8,270
NIPPON STEEL CORPORATION JP 5,222
POSCO (POHANG IRON AND STEEL COMPANY) KR 4,824
JFE STEEL 3,311
ARCELORMITTAL LU 3,239
NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 2,659
HYUNDAI STEEL COMPANY KR 1,492
ANGANG STEEL COMPANY 1,318
BAOSHAN IRON & STEEL COMPANY 1,233
KOBE STEEL JP 1,228