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CPC Subgroup
C30B 29/22

Complex oxides

Full Title

Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape > Inorganic compounds or compositions > Oxides > Complex oxides

6 direct subcodes

Child Classifications

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  • C30B 29/24 with formula AMeO3, wherein A is a rare earth metal and Me is Fe, Ga, Sc, Cr, Co or Al, e.g. ortho ferrites
  • C30B 29/26 with formula BMe2O4, wherein B is Mg, Ni, Co, Al, Zn, or Cd and Me is Fe, Ga, Sc, Cr, Co, or Al
  • C30B 29/28 with formula A3Me5O12 wherein A is a rare earth metal and Me is Fe, Ga, Sc, Cr, Co or Al, e.g. garnets
  • C30B 29/30 Niobates; Vanadates; Tantalates
  • C30B 29/32 Titanates; Germanates; Molybdates; Tungstates

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