CPC Subgroup
C21B 3/10 Slag pots; Slag cars
Full Title
General features in the manufacture of pig-iron (mixers for pig-iron C21C1/06) > Recovery of by-products, e.g. slag > Treatment of liquid slag (slag wool C03B; slag stones C04B) > Slag pots; Slag cars
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