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PCE
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CPC Subgroup
C01D 1/20

Preparation by reacting oxides or hydroxides with alkali metal salts

Full Title

Oxides or hydroxides of sodium, potassium or alkali metals in general > Hydroxides > Preparation by reacting oxides or hydroxides with alkali metal salts

2 direct subcodes

Child Classifications

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  • C01D 1/22 with carbonates or bicarbonates
  • C01D 1/24 from or via fluorides or silico-fluorides

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