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PCE
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DIFF Subgroup
C22B 1/02

Roasting processes (C22B1/16 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Roasting processes

CPC: Roasting processes (C22B1/16 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Preliminary treatment of ores or scrap > Roasting processes

CPC:

Preliminary treatment of ores or scrap > Roasting processes (C22B1/16 takes precedence)

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

Child Classifications

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  • C22B 1/04 Blast roasting IPC+CPC Available in IPC and CPC
  • C22B 1/06 Sulfating roasting IPC+CPC Available in IPC and CPC
  • C22B 1/08 Chloridising roasting IPC+CPC Available in IPC and CPC
  • C22B 1/10 in fluidised form 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