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PCE
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DIFF Subgroup
C23F 13/12

Electrodes characterised by the material (C23F13/16 takes precedence)

Introduced: January 1990

Title

Titles differ between systems:

IPC: Electrodes characterised by the material

CPC: Electrodes characterised by the material (C23F13/16 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Inhibiting corrosion of metals by anodic or cathodic protection > cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions > Constructional parts, or assemblies of cathodic-protection apparatus > Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto > Electrodes characterised by the material

CPC:

Inhibiting corrosion of metals by anodic or cathodic protection > cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions > Constructional parts, or assemblies of cathodic-protection apparatus > Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto > Electrodes characterised by the material (C23F13/16 takes precedence)

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 1990.

Child Classifications

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  • C23F 13/14 Material for sacrificial anodes since 1990 IPC+CPC Available in IPC and CPC

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