Patents by Inventor Susanne G. Ruelas

Susanne G. Ruelas 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).

  • Engine oil compositions
    Patent number: 7926453
    Abstract: A lubricating oil composition comprising (a) a major amount of a base oil of lubricating viscosity and (b) a minor deposit-inhibiting effective amount of a reaction product prepared by transesterifying at least one glycerol ester and at least one non-glycerol polyol ester is provided. Methods for its use are also provided.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: April 19, 2011
    Assignee: Chevron Oronite Company LLC
    Inventors: Stephen H. Roby, Susanne G. Ruelas
  • Engine oil compositions
    Publication number: 20100132645
    Abstract: A lubricating oil composition comprising (a) a major amount of a base oil of lubricating viscosity and (b) a minor deposit-inhibiting effective amount of a reaction product prepared by transesterifying at least one glycerol ester and at least one non-glycerol polyol ester is provided. Methods for its use are also provided.
    Type: Application
    Filed: January 26, 2010
    Publication date: June 3, 2010
    Applicant: Chevron Oronite Company LLC
    Inventors: Stephen H. Roby, Susanne G. Ruelas
  • Engine oil compositions
    Patent number: 7678747
    Abstract: A lubricating oil composition comprising (a) a major amount of a base oil of lubricating viscosity and (b) a minor deposit-inhibiting effective amount of a reaction product prepared by transesterifying at least one glycerol ester and at least one non-glycerol polyol ester is provided. Methods for its use are also provided.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: March 16, 2010
    Assignee: Cherron Oronite Company LLC
    Inventors: Stephen H. Roby, Susanne G. Ruelas
  • Engine oil compostions
    Publication number: 20090197783
    Abstract: A lubricating oil composition comprising (a) a major amount of a base oil of lubricating viscosity and (b) a minor deposit-inhibiting effective amount of a reaction product prepared by transesterifying at least one glycerol ester and at least one non-glycerol polyol ester is provided. Methods for its use are also provided.
    Type: Application
    Filed: April 1, 2009
    Publication date: August 6, 2009
    Applicant: Chevron Oronite Company LLC
    Inventors: Stephen H. Roby, Susanne G. Ruelas
  • Lubricating base oil compositions and methods for improving fuel economy in an internal combustion engine using same
    Patent number: 7465696
    Abstract: A lubricating base oil composition is provided comprising (a) at least one Fischer-Tropsch derived lubricating base oil characterized as having a kinematic viscosity of about 2 to about 5 centistoke (cSt) at 100° C.; and (b) at least one polyol ester. Methods for improving the fuel economy of an internal combustion engine are also provided.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: December 16, 2008
    Assignee: Chevron Oronite Company, LLC
    Inventors: Stephen H. Roby, Susanne G. Ruelas
  • Low-phosphorus lubricating oil composition for extended drain intervals
    Publication number: 20040242433
    Abstract: The present invention is directed to a lubricating oil composition comprising a major amount of a base oil of lubricating viscosity and a minor amount of each of the following:
    Type: Application
    Filed: April 28, 2004
    Publication date: December 2, 2004
    Applicant: Chevron Oronite Company LLC
    Inventors: Stephen H. Roby, Richard J. Mayer, Susanne G. Ruelas
  • Low-phosphorus lubricating oil composition for extended drain intervals
    Publication number: 20040087451
    Abstract: The present invention is directed to a lubricating oil composition comprising a major amount of a base oil of lubricating viscosity and a minor amount of each of the following:
    Type: Application
    Filed: October 31, 2002
    Publication date: May 6, 2004
    Inventors: Stephen H. Roby, Richard J. Mayer, Susanne G. Ruelas
  • 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