Patents by Inventor Kathryn E. Matera

Kathryn E. Matera 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).

  • Neutral and low overbased alkylphenoxy sulfonate additive compositions derived from alkylphenols prepared by reacting an olefin or an alcohol with phenol in the presence of an acidic alkylation catalyst
    Patent number: 5330664
    Abstract: This invention is directed to neutral and low overbased alkylphenoxy sulfonates derived from alkylphenols prepared by alkylating phenol with an acidic alkylation catalyst having a Hammett (H.sub.o) acidity function of about -2.3 or less (more negative).
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: July 19, 1994
    Assignee: Chevron Research and Technology Company
    Inventors: Robert H. Wollenberg, Richard J. Nelson, John McDonald, Susanne G. Ruelas, Curtis B. Campbell, Kathryn E. Matera
  • Neutral and low overbased alkylphenoxy sulfonate additive compositions
    Patent number: 5330663
    Abstract: This invention is directed to neutral and low overbased alkylphenoxy sulfonates having a dialkyl content sufficient to provide an essentially neutral alkylphenoxy sulfonate having a viscosity no greater than about 1000 cSt at a temperature of 100.degree. C. in the presence of 40 weight percent diluent oil.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: July 19, 1994
    Assignee: Chevron Research and Technology Company
    Inventors: Robert H. Wollenberg, Richard J. Nelson, John McDonald, Susanne G. Ruelas, Curtis B. Campbell, Kathryn E. Matera