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CPC Main Group
C08B 3/00

Preparation of cellulose esters of organic acids

9 direct subcodes

Child Classifications

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  • C08B 3/02 Catalysts used for the esterification
  • C08B 3/04 Cellulose formate
  • C08B 3/06 Cellulose acetate
  • C08B 3/12 of polybasic organic acids
  • C08B 3/14 in which the organic acid residue contains substituents, e.g. NH2, Cl
  • C08B 3/20 Esterification with maintenance of the fibrous structure of the cellulose (surface esterification of textiles D06M13/00)

Top Applicants

Top 10 applicants by patent filingsfor class C08, 2013–2023, worldwide · Source: EPO PATSTAT

  1. LG CHEM KR 15,432
  2. DOW GLOBAL TECHNOLOGIES US 14,214
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 11,155
  4. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,455
  5. FUJIFILM JP 6,178
  6. CHINESE ACADEMY OF SCIENCES 5,569
  7. SHIN-ETSU CHEMICAL COMPANY JP 5,506
  8. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,443
  9. TORAY INDUSTRIES JP 4,635
  10. NITTO DENKO CORPORATION JP 4,620