Patents by Inventor Karol J. Thomas

Karol J. Thomas 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).

  • Middle distillate containing storage stability additive
    Patent number: 4948386
    Abstract: Additives formed by reaction of polyacids such as 1,3,6-hexane tricarboxylic acid and polyisobutenyl succinimide of a polyamine are effective in improving the storage stability of middle distillate fuels.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: August 14, 1990
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Benjamin J. Kaufman, Karol J. Thomas