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DIFF Main Group
C23C 2/00

Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor

Introduced: January 1985

Of 11 combined children, 7 exist in both systems.

4 codes are CPC-only extensions.

5 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1985.

Child Classifications

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  • C23C 2/30 Fluxes or coverings on molten baths (C23C2/22 takes precedence) since 1985 IPC+CPC Available in IPC and CPC
  • C23C 2/32 using vibratory energy applied to the bath or substrate (C23C2/14 takes precedence) since 1985 IPC+CPC Available in IPC and CPC
  • C23C 2/325 CPC only CPC only

Top Applicants

Top Applicants (IPC)

Class C23,2013–2023, worldwide · Source: EPO PATSTAT

  1. APPLIED MATERIALS US 8,096
  2. TOKYO ELECTRON JP 3,985
  3. CHINESE ACADEMY OF SCIENCES 2,842
  4. LAM RESEARCH CORPORATION US 2,654
  5. TOKYO ELECTRON 2,540
  6. NIPPON STEEL CORPORATION JP 2,465
  7. JFE STEEL JP 2,368
  8. ASM IP HOLDING NL 2,092
  9. APPLIED MATERIALS 1,877
  10. POSCO (POHANG IRON AND STEEL COMPANY) KR 1,782

Top Applicants (CPC)

Class C23,2013–2023, worldwide · Source: EPO PATSTAT

  1. APPLIED MATERIALS US 10,596
  2. TOKYO ELECTRON JP 5,229
  3. LAM RESEARCH CORPORATION US 3,622
  4. NIPPON STEEL CORPORATION JP 3,171
  5. JFE STEEL JP 3,128
  6. ASM IP HOLDING NL 2,722
  7. ARCELORMITTAL LU 2,481
  8. TOKYO ELECTRON 2,359
  9. APPLIED MATERIALS 2,284
  10. CHINESE ACADEMY OF SCIENCES 2,110