Patents Represented by Attorney Joseph Suhaddnik

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  • Lubricating oil compositions
    Patent number: 7846884
    Abstract: Lubricating oil compositions containing (a) at least one oil of lubricating viscosity and (b) an effective amount of at least one thio-functionalized phenylenediamine compound of the general formula: wherein R1, R2, R3, R4 and n are as defined herein are provided. Methods of operating an engine employing the lubricating oil composition are also provided.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: December 7, 2010
    Assignee: Chemtura Corporation
    Inventor: Qinggao Ma