Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Solvent deasphalting by polarity gradient extraction

Solvent deasphalting by polarity gradient extraction

US Patent 4305812 · Granted Dec 15, 1981

Estimated economic value: $7,939,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Base stocks and lubricant compositions containing same2021
Integrated resid deasphalting and gasification2021
Bright stock production from low severity resid deasphalting2020
Bright stock production from deasphalted oil2020
Sequential deasphalting for base stock production2020
Base stocks and lubricant compositions containing same2019
Block processing configurations for base stock production from deasphalted oil2019
Production of low cloud point distillate fuels2019
Apparatus and process for producing gasoline, olefins and aromatics from oxygena2019
Production of low cloud point diesel fuels and low freeze point jet fuels2018
Fuels hydrocracking with dewaxing of fuel products2018
Apparatus and process for producing gasoline, olefins and aromatics from oxygena2018