Edward W Funk, Walter G May, James C Pirkle Jr: Solvent extraction process for tar sands. Exxon Research & Engineering Co, James H Takemoto, August 31, 1982: US04347118 (62 worldwide citation)

A solvent extraction process for tar sands is disclosed wherein a low boiling solvent having a normal boiling point of from 20.degree. to 70.degree. C. is used to extract tar sands. The solvent is mixed with tar sands in a dissolution zone, the solvent:bitumen weight ratio being maintained at from a ...

Walter G May, Donald E Shaneberger: Method of transporting gas. Exxon Research and Engineering Company, Harold N Wells, F D Paris, November 9, 1976: US03990256 (19 worldwide citation)

A method of distributing natural gas by pipeline comprising pumping liquefied natural gas (LNG) for a predetermined portion of the desired distance, applying processes in which the refrigeration value of the gas is utilized and the high boiling point components are separated, and then vaporizing the ...