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PCE
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CPC Subgroup
C01F 7/476

by oxidation

Full Title

Compounds of aluminium > Aluminium oxide; Aluminium hydroxide; Aluminates > Purification of aluminium oxide, aluminium hydroxide or aluminates (C01F7/028 takes precedence) > of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors > Removal of organic compounds, e.g. sodium oxalate > by oxidation

Top Applicants

Top 10 applicants by patent filingsfor class C01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 4,293
  2. LG CHEM KR 3,317
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 2,219
  4. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 2,154
  5. OMYA INTERNATIONAL CH 1,524
  6. PANASONIC INTELLECTUAL PROPERTY JP 1,362
  7. SAUDI ARABIAN OIL COMPANY SA 1,298
  8. SUMITOMO METAL MINING COMPANY JP 1,286
  9. CENTRAL SOUTH UNIVERSITY 1,243
  10. L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE FR 1,238