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CPC Subgroup Additional Only
B01D 2252/2025

Ethers or esters of alkylene glycols, e.g. ethylene or propylene carbonate

Full Title

Absorbents, i.e. solvents and liquid materials for gas absorption > Organic absorbents > Alcohols or their derivatives > Glycols, diols or their derivatives > Ethers or esters of alkylene glycols, e.g. ethylene or propylene carbonate

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