Patents Represented by Attorney Thomas Hamiton

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  • Odor reduction of lubricant additives packages
    Patent number: 6133207
    Abstract: Sulfurized phosphorous compounds, which are effective anti-wear, extreme pressure agents, may be formed without odor by reacting phosphorous compounds with other reactive sulfur sources, including elemental sulfur, before addition of polysulfides. The process of the present invention yields a lubricant additive package which is odor free or very low odor, thermally stable, and which contains polysulfides. Particularly useful embodiments of this invention include low odor gear lubricant additive packages.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: October 17, 2000
    Assignee: Ethyl Corporation
    Inventors: Jeffrey Lynn Milner, Ronald Lee Phillips, Nubar Ozbalik, Anthony J. Rollin