Patents by Inventor Conrad A. Mamajek

Conrad A. Mamajek 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).

  • Environmentally friendly viscosity index improving compositions
    Patent number: 5399275
    Abstract: A lubricant composition having improved viscosity index characteristics is described that comprises(A) at least one vegetable or synthetic triglyceride oil of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are aliphatic hydrocarbyl groups having at least 60 percent monounsaturated character and containing from about 6 to about 24 carbon atoms and further wherein an oleic acid moiety:linoleic acid moiety is from about 2 up to about 90 and(B) at least one mixed ester of a carboxy-containing interpolymer.Optionally, the composition may also contain(C) a synthetic ester base oil, and(D) an antioxidant.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: March 21, 1995
    Assignee: The Lubrizol Corporation
    Inventors: Richard M. Lange, Joseph G. Seebauer, Conrad A. Mamajek