CPC Subgroup
C22B 21/0038 Full Title
Obtaining aluminium
Filing statistics
CPC C22B 21/0038 belongs to the parent subclass C22B, which recorded 61,160 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,111 in 2013 to 8,089 in 2023 (+160%). The most active applicants in class C22 are JFE STEEL (7,620 applications), NIPPON STEEL CORPORATION (5,769 applications) and POSCO (POHANG IRON AND STEEL COMPANY) (4,523 applications).
Source: EPO PATSTAT, worldwide filings
3 direct subcodes
Child Classifications
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Top Applicants
Top 10 applicants by patent filingsfor class C22, 2013–2023, worldwide · Source: EPO PATSTAT
- JFE STEEL JP 7,620
- NIPPON STEEL CORPORATION JP 5,769
- POSCO (POHANG IRON AND STEEL COMPANY) KR 4,523
- JFE STEEL 3,080
- NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 2,999
- ARCELORMITTAL LU 2,962
- CENTRAL SOUTH UNIVERSITY 2,431
- KOBE STEEL JP 2,100
- CHINESE ACADEMY OF SCIENCES 2,052
- MITSUBISHI MATERIALS CORPORATION JP 1,405