IPC Main Group
C23F 13/00 Inhibiting corrosion of metals by anodic or cathodic protection
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- Subclass:
- NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACES; INHIBITING CORROSION OF METALLIC MATERIAL; INHIBITING INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS AND AT LEAST ONE PROCESS COVERED BY SUBCLASS OR OR CLASS
Related Keywords
inhibiting CORROSION of metalscorrosion INHIBITORSanodic or cathodic protection of METAL(S)inhibiting corrosion of METAL(S)anodic or cathodic protection of SURFACE(S)
1 direct subcode
Child Classifications
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- C23F 13/02 cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
Top Applicants
Top 10 applicants by patent filingsfor class C23, 2013–2023, worldwide · Source: EPO PATSTAT
- APPLIED MATERIALS US 8,096
- TOKYO ELECTRON JP 3,985
- CHINESE ACADEMY OF SCIENCES 2,842
- LAM RESEARCH CORPORATION US 2,654
- TOKYO ELECTRON 2,540
- NIPPON STEEL CORPORATION JP 2,465
- JFE STEEL JP 2,368
- ASM IP HOLDING NL 2,092
- APPLIED MATERIALS 1,877
- POSCO (POHANG IRON AND STEEL COMPANY) KR 1,782