Patents by Inventor Garren E. Maas

Garren E. Maas 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).

  • Mannich base derivative of hydroxyaryl succinimide and hydrocarbon oil composition containing same
    Patent number: 4354950
    Abstract: A Mannich base derivative of a hydroxyaryl succinimide represented by the formula: ##STR1## in which R is a hydrocarbyl radical having from about 25 to 200 carbon atoms, R' is hydrogen, an alkyl radical or a halogen radical, n has a value of 2 or 3, m has a value from 1 to 5, Y is hydrogen or a methylene hydroxyaryl succinimide radical, and x has a value of 1 to 2 when Y is hydrogen and a value of 1 when Y is a methylene hydroxyaryl succinimide radical is provided, as well as a method of preparation and a hydrocarbon lubricating oil composition containing same.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: October 19, 1982
    Assignee: Texaco Inc.
    Inventors: Kenneth G. Hammond, Garren E. Maas