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PCE
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DIFF Subgroup
C30B 29/60

characterised by shape

Introduced: January 1980

Full Title

Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape > characterised by shape

Of 6 combined children, 4 exist in both systems.

2 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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  • C30B 29/602 CPC only CPC only
  • C30B 29/605 CPC only CPC only
  • C30B 29/62 Whiskers or needles since 1980 IPC+CPC Available in IPC and CPC
  • C30B 29/64 Flat crystals, e.g. plates, strips or discs since 1990 IPC+CPC Available in IPC and CPC
  • C30B 29/66 Crystals of complex geometrical shape, e.g. tubes, cylinders since 1990 IPC+CPC Available in IPC and CPC
  • C30B 29/68 Crystals with laminate structure, e.g. "superlattices" since 1990 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class C30,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 1,516
  2. SUMCO CORPORATION JP 786
  3. SUMCO CORPORATION 703
  4. SUMITOMO ELECTRIC INDUSTRIES JP 604
  5. SHIN ETSU HANDOTAI COMPANY JP 556
  6. GLOBALWAFERS COMPANY TW 492
  7. APPLIED MATERIALS US 463
  8. SHIN ETSU HANDOTAI COMPANY 450
  9. SUMITOMO ELECTRIC INDUSTRIES 436
  10. SILTRONIC DE 429

Top Applicants (CPC)

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