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PCE
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DIFF Main Group
C23C 4/00

Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge (build-up welding B23K, e.g. B23K5/18, B23K9/04)

Introduced: January 1985

Title

Titles differ between systems:

IPC: Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge

CPC: Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge (build-up welding B23K, e.g. B23K5/18, B23K9/04)

Full Title

Full titles differ between systems:

IPC:

Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge

CPC:

Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge (build-up welding B23K, e.g. B23K5/18, B23K9/04)

Additional Content IPC

Build-up welding

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

IPC defines codes here since 1985.

Child Classifications

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  • C23C 4/01 Selective coating, e.g. pattern coating, without pre-treatment of the material to be coated since 2016 IPC+CPC Available in IPC and CPC
  • C23C 4/02 Pretreatment of the material to be coated, e.g. for coating on selected surface areas since 1985 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