Patents Examined by Curtis R. David
  • Patent number: 5080776
    Abstract: A two-stage method is provided for converting diamondoid-containing wash oils to gasoline comprising a first hydrocracking stage and a second reforming stage. In the most preferred embodiment, process conditions are controlled to effect a substantially hydrogen-balanced conversion of diamondoid-containing solvent to a motor gasoline blending component.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: January 14, 1992
    Assignee: Mobil Oil Corporation
    Inventors: Randall D. Partridge, D. Duayne Whitehurst
  • Patent number: 4413156
    Abstract: An improved process for the manufacture of synthetic lubricant additives from olefins having two or three carbon atoms is described. The low molecular weight olefins are converted to internal olefins having 9 to 24 carbon atoms via isomerization and disproportionation. The process utilizes boron trifluoride catalysis with a promoter to produce from the C.sub.9 -C.sub.24 internal olefins oligomer mixtures that have surprisingly low viscosities at low temperatures and surprisingly high viscosity indexes as compared with the oligomers found in other methods. It is important that internal olefins be used almost exclusively in the second step of the method of this invention.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: November 1, 1983
    Assignee: Texaco Inc.
    Inventors: Lewis W. Watts, Jr., Edward T. Marquis