Patents by Inventor W. R. Song

W. R. Song has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Lubricating oil compositions containing ethylene-alpha-olefin polymers of controlled sequence distribution and molecular heterogeneity
    Patent number: 4507515
    Abstract: Ethylene-alpha-olefin copolymers are disclosed being particularly useful as improving the low temperature viscosity and pumpability properties of lubricating oil comprised of a major and minor component each of which have a defined ethylene sequence distribution with respect to the number of ethylenes in sequences of three or more and the percent of ethylene sequences of three or more ethylene units. Ethylene-propylene copolymers are the preferred embodiment.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: March 26, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: John E. Johnston, Ricardo Bloch, Gary W. Ver Strate, W. R. Song