Patents by Inventor Thomas A. Leeper

Thomas A. Leeper 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).

  • Method of operating a refinery to reduce atmospheric pollution
    Patent number: 5599357
    Abstract: Methods and compositions for reducing toxic compounds emissions and the maximum reactivity of exhaust products emitted by spark-ignition internal combustion engines. Gasoline having a minimum target octane number is formed by blending together base fuel blending components and at least one cyclopentadienyl manganese tricarbonyl compound in an amount equivalent to up to about 0.03 gram of manganese per gallon.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: February 4, 1997
    Assignee: Ehtyl Corporation
    Inventor: Thomas A. Leeper