Patents by Inventor Francis E. Brown

Francis E. Brown 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 fluid composition and methods for reducing frictional losses therewith in internal combustion engines
    Patent number: 5320761
    Abstract: Lubricant efficiency in an internal combustion engine is improved by determining the frictional coefficient of the lubricant and adding appropriate additives to adjust viscosity and surface tension to optimum ranges. This results in improved fuel economy and reduced engine wear.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: June 14, 1994
    Assignee: Pennzoil Products Company
    Inventors: David P. Hoult, Francis E. Brown