CPC Subgroup
C21B 7/18 Bell-and-hopper arrangements
Full Title
Blast furnaces (lifts associated with blast furnaces B66B9/06) > Bell-and-hopper arrangements
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open
- C21B 7/20 with appliances for distributing the burden
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