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CPC Main Group
C30B 31/00

Diffusion or doping processes for single crystals or homogeneous polycrystalline material with defined structure; Apparatus therefor

4 direct subcodes

Child Classifications

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  • C30B 31/02 by contacting with diffusion materials in the solid state

Top Applicants

Top 10 applicants by patent filingsfor class C30, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 1,052
  2. SUMCO CORPORATION JP 881
  3. APPLIED MATERIALS US 871
  4. SUMITOMO ELECTRIC INDUSTRIES JP 682
  5. SHIN ETSU HANDOTAI COMPANY JP 649
  6. SHIN-ETSU CHEMICAL COMPANY JP 506
  7. SUMCO CORPORATION 500
  8. SILTRONIC DE 491
  9. GLOBALWAFERS COMPANY TW 458
  10. NGK INSULATORS JP 379