Patents by Inventor Michael Rosana

Michael Rosana 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).

  • Lubricant composition for reduced engine sludge
    Patent number: 11479736
    Abstract: The present disclosure describes lubricant compositions effective to minimize average engine sludge through selection of lubricant additives that control the total nitrogen as well as the origin of the nitrogen in the lubricant composition. In aspects, the lubricant compositions herein include at least a base oil of lubricating viscosity, a dispersant system, and at least one antioxidant.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: October 25, 2022
    Assignee: Afton Chemical Corporation
    Inventors: Lisa Dingwell, Michael Rosana