C22F 1/165 Full Title
Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working (apparatus for mechanical working of metal B21, B23, B24) > of other metals or alloys based thereon
Filing statistics
CPC C22F 1/165 belongs to the parent subclass C22F, which recorded 44,798 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,326 in 2013 to 4,450 in 2023 (+91%), peaking at 5,042 applications in 2018. 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
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