Patents by Inventor Robert C. Tupa

Robert C. Tupa 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).

  • Manganese and copper containing compositions
    Patent number: 4664677
    Abstract: Disclosed are manganese and copper-containing compositions comprising:(A) a manganese containing compound and(B) a copper containing compound,wherein said composition contains from about 0.05 up to about 23 g-atoms of manganese for each g-atom of copper in said composition. Also disclosed are fuel compositions and additive concentrates containing said manganese and copper-containing compositions. Additionally, disclosed is a method for reducing ignition temperature of exhaust particulate from diesel engines which comprises operating said engine using the above-described fuel compositions.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: May 12, 1987
    Assignee: The Lubrizol Corporation
    Inventors: Casper J. Dorer, Jr., Robert C. Tupa