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PCE
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DIFF Subgroup
C23C 4/12

characterised by the method of spraying

Introduced: January 1985

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 > characterised by the method of spraying

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) > characterised by the method of spraying

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

IPC defines codes here since 1985.

Child Classifications

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  • C23C 4/123 Spraying molten metal since 2016 IPC+CPC Available in IPC and CPC
  • C23C 4/126 Detonation spraying since 2016 IPC+CPC Available in IPC and CPC
  • C23C 4/129 Flame spraying since 2016 IPC+CPC Available in IPC and CPC
  • C23C 4/131 Wire arc spraying since 2016 IPC+CPC Available in IPC and CPC
  • C23C 4/134 Plasma spraying since 2016 IPC+CPC Available in IPC and CPC
  • C23C 4/137 Spraying in vacuum or in an inert atmosphere since 2016 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