Patents by Inventor Jayne M. Vaccaro

Jayne M. Vaccaro 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).

  • Overbased calcium sulfonate
    Patent number: 5578235
    Abstract: A method of preparing a calcium sulfonate having at least a TBN of 500 where the method comprises reacting CaO, Ca(OH).sub.2 and H.sub.2 O, and synthetic monoalkylbenzene sulfonate and synthetic dialkylbenzene sulfonate in certain molar ratios, respectively, for a sufficient length of time to produce the overbased calcium sulfonate.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: November 26, 1996
    Assignee: Ethyl Additives Corporation
    Inventors: Tze-Chi Jao, Jayne M. Vaccaro, William J. Powers, III
  • Method of preparing overbased calcium sulfonates
    Patent number: 5132033
    Abstract: Lubricating oils contain an overbased oil-soluble composition prepared by adding water to a heated reaction mixture containing an alkaline earth metal halide, an alkaline earth metal salt of an alkaryl sulfonate, a hydrocarbon diluent-solvent, a lower alkanol, and an alkali metal oxide, and thereafter passing carbon dioxide through the reaction mixture.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: July 21, 1992
    Assignee: Texaco Inc.
    Inventors: Tze C. Jao, Jayne M. Vaccaro, Elzie D. Black
  • 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