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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)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working

CPC: 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)

Full Title

Full titles differ between systems:

IPC:

Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working

CPC:

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 13 combined children, 9 exist in both systems.

4 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • C22F 1/002 CPC only CPC only
  • C22F 1/004 CPC only CPC only
  • C22F 1/006 CPC only CPC only
  • C22F 1/008 CPC only CPC only
  • C22F 1/02 in inert or controlled atmosphere or vacuum (adjusting the composition of the atmosphere C21D1/76) IPC+CPC Available in IPC and CPC
  • C22F 1/06 of magnesium or alloys based thereon IPC+CPC Available in IPC and CPC
  • C22F 1/08 of copper or alloys based thereon IPC+CPC Available in IPC and CPC
  • C22F 1/10 of nickel or cobalt or alloys based thereon IPC+CPC Available in IPC and CPC
  • C22F 1/11 of chromium or alloys based thereon IPC+CPC Available in IPC and CPC
  • C22F 1/12 of lead or alloys based thereon IPC+CPC Available in IPC and CPC
  • C22F 1/14 of noble metals or alloys based thereon 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