Patents Represented by Attorney Geofrey A. Mantooth

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  • Oil additive having reduced lacquer forming tendencies
    Patent number: 4861504
    Abstract: An oil additive, particularly useful for railroad engines having reduced lacquer forming tendencies characterized by a novel alkaline earth phenate in which the normal tendency to form lacquers is reduced by the substitution of electron-donating groups; such as sulfur or tertiary amines for the secondary amine in the structural formula.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: August 29, 1989
    Assignee: Atlantic Richfield Company
    Inventor: Tai S. Chao