Patents by Inventor Chung Kun Shih

Chung Kun Shih 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).

  • Patent number: 4772674
    Abstract: Process for the bulk polymerization of vinyl acetate with a diester are disclosed which are carried out in the absence of a solvent and including reacting the vinyl acetate and fumaric acid diester with a peroxide catalyst at specified molar ratios and up to reaction temperatures of from 255.degree. to 320.degree. F. to produce fumarate vinyl acetate copolymers having number average molecular weight below 50,000 for use as lubricating oil and fuel oil additives.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: September 20, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Chung Kun Shih, Craig W. Gleason, Edmund H. Braun, II
  • Patent number: 4589991
    Abstract: There is disclosed a process for the solubilization of a mercaptobenzothiazole amine salt with a solvent such as dihexyl phthalate which solubilized salt is in turn suitable for dissolution into a lubricating oil composition, such as an automatic transmission fluid, even at room temperature.
    Type: Grant
    Filed: July 1, 1985
    Date of Patent: May 20, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventors: Jack Ryer, Chung Kun Shih, John E. Williams