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CPC Subgroup Additional Only
B01J 2231/341

1,2-additions, e.g. aldol or Knoevenagel condensations

Full Title

Catalytic reactions performed with catalysts classified in B01J31/00 > Addition reactions at carbon centres, i.e. to either C-C or C-X multiple bonds > Other additions, e.g. Monsanto-type carbonylations, addition to 1,2-C=X or 1,2-C-X triplebonds, additions to 1,4-C=C-C=X or 1,4-C=-C-X triple bonds with X, e.g. O, S, NH/N > 1,2-additions, e.g. aldol or Knoevenagel condensations

3 direct subcodes

Child Classifications

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  • B01J 2231/346 Mannich type reactions, i.e. nucleophilic addition of C-H acidic compounds, their R3Si- or metal complex analogues to aldimines or ketimines
  • B01J 2231/347 via cationic intermediates, e.g. bisphenol A type processes

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