CPC Main Group
C22F 1/00 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)
13 direct subcodes
Child Classifications
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- C22F 1/02 in inert or controlled atmosphere or vacuum (adjusting the composition of the atmosphere C21D1/76)
- C22F 1/04 of aluminium or alloys based thereon
- C22F 1/06 of magnesium or alloys based thereon
- C22F 1/08 of copper or alloys based thereon
- C22F 1/10 of nickel or cobalt or alloys based thereon
- C22F 1/11 of chromium or alloys based thereon
- C22F 1/12 of lead or alloys based thereon
- C22F 1/14 of noble metals or alloys based thereon
- C22F 1/16 of other metals or alloys based thereon
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