CPC Subgroup Additional Only
B01D 2252/2056 Sulfur compounds, e.g. Sulfolane, thiols
Full Title
Absorbents, i.e. solvents and liquid materials for gas absorption > Organic absorbents > Other organic compounds not covered by B01D2252/00 - B01D2252/20494 > Sulfur compounds, e.g. Sulfolane, thiols
Top Applicants
Top 10 applicants by patent filingsfor class B01, 2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 10,345
- CHINESE ACADEMY OF SCIENCES 8,352
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,134
- LG CHEM KR 4,290
- SAUDI ARABIAN OIL COMPANY SA 3,444
- IFPEN (IFP ENERGIES NOUVELLES) FR 3,417
- DOW GLOBAL TECHNOLOGIES US 3,195
- MANN + HUMMEL DE 2,822
- JOHNSON MATTHEY GB 2,802
- UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,737