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DIFF Subgroup
C22C 1/059

Making alloys comprising less than 5% by weight of dispersed reinforcing phases

Introduced: January 2023

Full Title

Full titles differ between systems:

IPC:

Making non-ferrous alloys > by powder metallurgy > Mixtures of metal powder with non-metallic powder > Making alloys comprising less than 5% by weight of dispersed reinforcing phases

CPC:

Making non-ferrous alloys (by electrothermic methods C22B4/00; by electrolysis C25C1/24, C25C3/36) > by powder metallurgy (C22C1/08 takes precedence) > Mixtures of metal powder with non-metallic powder (C22C1/08 takes precedence) > Making alloys comprising less than 5% by weight of dispersed reinforcing phases

Additional Content IPC

dispersed reinforcing phase dispersed reinforcing phases the ultrafine second phase (hardened phase) for reinforcing alloys, which is insoluble in base metal

No child classifications to compare. This is a leaf node in both 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