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PCE
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DIFF Subgroup
C30B 29/44

Gallium phosphide

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape > Inorganic compounds or compositions > AB compounds > Gallium phosphide

CPC:

Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape > Inorganic compounds or compositions > AIIIBV compounds > Gallium phosphide

No child classifications to compare. This is a leaf node in both 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