Pretreatment of the material to be coated

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating > by reduction or substitution, i.e. electroless plating > Pretreatment of the material to be coated

CPC:

Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating > by reduction or substitution, e.g. electroless plating (C23C18/54 takes precedence) > Pretreatment of the material to be coated

CPC subdivides this area 3x more granularly than IPC with 2 additional codes.

2 codes are CPC-only extensions.

IPC defines codes here since 1985.

Child Classifications

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C23C 18/1803 +4 CPC CPC only CPC only
C23C 18/1851 +4 CPC CPC only CPC only
C23C 18/20 of organic surfaces, e.g. resins since 1985 +1 CPC IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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

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