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DIFF Main Group
C30B 11/00

Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method (C30B13/00, C30B15/00, C30B17/00, C30B19/00 take precedence; under a protective fluid C30B27/00)

Introduced: January 1980

Title

Titles differ between systems:

IPC: Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method

CPC: Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method (C30B13/00, C30B15/00, C30B17/00, C30B19/00 take precedence; under a protective fluid C30B27/00)

Full Title

Full titles differ between systems:

IPC:

Single-crystal-growth by normal freezing or freezing under temperature gradient, e.g. Bridgman- Stockbarger method

CPC:

Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method (C30B13/00, C30B15/00, C30B17/00, C30B19/00 take precedence; under a protective fluid C30B27/00)

CPC subdivides this area 3x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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  • C30B 11/001 CPC only CPC only
  • C30B 11/002 CPC only CPC only
  • C30B 11/003 CPC only CPC only
  • C30B 11/005 CPC only CPC only
  • C30B 11/006 CPC only CPC only
  • C30B 11/007 CPC only CPC only
  • C30B 11/008 CPC only CPC only
  • C30B 11/02 without using solvents (C30B11/06 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
  • C30B 11/14 characterised by the seed, e.g. its crystallographic orientation since 1980 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