Patents by Inventor Charles J. Dain

Charles J. Dain 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 compositions
    Patent number: 5126064
    Abstract: Lubricant compositions, especially suitable for limited slip differentials, containing sulphur-containing extreme pressure or anti-wear agents, are improved by incorporation of a substituted succinimide friction modifier. The resulting compositions reduce the level of noise produced during operation of the differential.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: June 30, 1992
    Assignee: Ethyl Petroleum Additives, Ltd.
    Inventors: Rodney I. Barber, Charles J. Dain, David K. Walters