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CPC Subgroup Additional Only
B01J 2531/0252

Salen ligands or analogues, e.g. derived from ethylenediamine and salicylaldehyde

Full Title

Additional information regarding catalytic systems classified in B01J31/00 > Compositional aspects of complexes used, e.g. polynuclearity > Complexes comprising multidentate ligands, i.e. more than 2 ionic or coordinative bonds from the central metal to the ligand, the latter having at least two donor atoms, e.g. N, O, S, P > Rigid ligands, e.g. extended sp2-carbon frameworks or geminal di- or trisubstitution > Salen ligands or analogues, e.g. derived from ethylenediamine and salicylaldehyde

Top Applicants

Top 10 applicants by patent filingsfor class B01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 10,345
  2. CHINESE ACADEMY OF SCIENCES 8,352
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,134
  4. LG CHEM KR 4,290
  5. SAUDI ARABIAN OIL COMPANY SA 3,444
  6. IFPEN (IFP ENERGIES NOUVELLES) FR 3,417
  7. DOW GLOBAL TECHNOLOGIES US 3,195
  8. MANN + HUMMEL DE 2,822
  9. JOHNSON MATTHEY GB 2,802
  10. UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,737