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PCE
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DIFF Main Group
C22C 9/00

Alloys based on copper

Introduced: September 1968

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

Child Classifications

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  • C22C 9/01 with aluminium as the next major constituent since 1974 IPC+CPC Available in IPC and CPC
  • C22C 9/02 with tin as the next major constituent IPC+CPC Available in IPC and CPC
  • C22C 9/04 with zinc as the next major constituent IPC+CPC Available in IPC and CPC
  • C22C 9/05 with manganese as the next major constituent since 1974 IPC+CPC Available in IPC and CPC
  • C22C 9/06 with nickel or cobalt as the next major constituent IPC+CPC Available in IPC and CPC
  • C22C 9/08 with lead as the next major constituent IPC+CPC Available in IPC and CPC
  • C22C 9/10 with silicon as the next major constituent IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class C22,2013–2023, worldwide · Source: EPO PATSTAT

  1. JFE STEEL JP 7,152
  2. NIPPON STEEL CORPORATION JP 5,416
  3. POSCO (POHANG IRON AND STEEL COMPANY) KR 4,530
  4. JFE STEEL 3,986
  5. CENTRAL SOUTH UNIVERSITY 3,086
  6. NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 2,843
  7. CHINESE ACADEMY OF SCIENCES 2,702
  8. ARCELORMITTAL LU 2,124
  9. NSSMC (NIPPON STEEL & SUMITOMO METAL) 2,075
  10. KOBE STEEL JP 1,891

Top Applicants (CPC)

Class C22,2013–2023, worldwide · Source: EPO PATSTAT

  1. JFE STEEL JP 7,620
  2. NIPPON STEEL CORPORATION JP 5,769
  3. POSCO (POHANG IRON AND STEEL COMPANY) KR 4,523
  4. JFE STEEL 3,080
  5. NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 2,999
  6. ARCELORMITTAL LU 2,962
  7. CENTRAL SOUTH UNIVERSITY 2,431
  8. KOBE STEEL JP 2,100
  9. CHINESE ACADEMY OF SCIENCES 2,052
  10. MITSUBISHI MATERIALS CORPORATION JP 1,405