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PCE
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CPC Subgroup Additional Only
C23F 2213/21

combining at least two types of anodic or cathodic protection

Full Title

Aspects of inhibiting corrosion of metals by anodic or cathodic protection > Constructional parts or assemblies of the anodic or cathodic protection apparatus > combining at least two types of anodic or cathodic protection

Top Applicants

Top 10 applicants by patent filingsfor 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