Patents Represented by Attorney James J. O'Loghlin

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  • Process for preparing improved overbased calcium sulfonate
    Patent number: 4997584
    Abstract: A method of preparing a calcium sulfonate having a TBN of 500 where the method comprises reacting CaO, Ca(OH).sub.2 and H.sub.2 O, and synthetic and natural sulfonates in certain molar ratios, respectively, for a sufficient length of time to produce the overbased calcium sulfonate.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: March 5, 1991
    Assignee: Texaco Inc.
    Inventors: Tze C. Jao, Jayne M. Vaccaro, Leonard A. Matthews
  • Exhaust particulate reducing and color stabilizing additives for diesel fuels
    Patent number: 4775389
    Abstract: Diesel fuel oil of improved color stability containing a bis-nitrogen heterocyclic diester, a rare earth metal and an oxygenated compound.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: October 4, 1988
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Antonio M. Mourao