Inventor
BUSHNELL JAMES D
11 patents
Patents
11 patentsUS3975396AAug 17, 1976
Deasphalting process
EXXON RESEARCH ENGINEERING CO34 citations92
US4125458ANov 14, 1978
Simultaneous deasphalting-extraction process
EXXON RESEARCH ENGINEERING CO50 citations91
US4057491ANov 8, 1977
Solvent recovery process for N-methyl-2-pyrrolidone in hydrocarbon extraction
EXXON RESEARCH ENGINEERING CO30 citations81
US4522710AJun 11, 1985
Method for increasing deasphalted oil production
EXXON RESEARCH ENGINEERING CO9 citations72
US4511537AApr 16, 1985
Extraction zone
EXXON RESEARCH ENGINEERING CO13 citations72
US4426361AJan 17, 1984
Extraction zone tray
EXXON RESEARCH ENGINEERING CO12 citations72
US4013549AMar 22, 1977
Lube extraction with NMP/phenol/water mixtures
EXXON RESEARCH ENGINEERING CO17 citations72
US3972802AAug 3, 1976
Immiscible coolant in propylene-acetone dewaxing
EXXON RESEARCH ENGINEERING CO7 citations72
US4208382AJun 17, 1980
Removing H2 S from gas with recycled NMP extraction solvent
EXXON RESEARCH ENGINEERING CO7 citations69
US4169039ASep 25, 1979
Recovering useful oil from wax filter hot washings and dumped slurry
EXXON RESEARCH ENGINEERING CO4 citations61
US4052294AOct 4, 1977
Method of solvent recovery in autorefrigerant/ketone dewaxing processes
EXXON RESEARCH ENGINEERING CO3 citations57