Patents by Inventor Stephen H. Roby

Stephen H. Roby 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).

  • Publication number: 20150203420
    Abstract: The present disclosure generally relates to removing metals from liquid-phase pyrolysis oil, such as at or near room temperatures. Specifically, some embodiments of the disclosure relate to a method and a system for removing metals from pyrolysis oil using acidic ion-exchange resins. One embodiment relates to a method for removing metals from pyrolysis oil comprising combining pyrolysis oil and an organic solvent to form a pyrolysis oil mixture and removing metal from the pyrolysis oil mixture to produce a reduced metal content pyrolysis oil mixture. The metal can then be removed by using a strongly acidic ion-exchange resin.
    Type: Application
    Filed: January 17, 2014
    Publication date: July 23, 2015
    Applicant: Chevron U.S.A. Inc.
    Inventors: Guangci Zhou, Stephen H. Roby, Christopher W. Kuehler
  • Patent number: 8147567
    Abstract: The present invention is generally directed to novel biodiesel fuel compositions having enhanced low-temperature properties. The present invention is additionally directed to methods (i.e., processes) for making such enhanced biodiesel fuels by improving the low-temperature properties of ester-based biodiesel fuels via in situ enhancement and/or additive enhancement.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: April 3, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Guangci Zhou, Curt Munson, Saleh A. Elomari, Stephen H. Roby
  • Patent number: 8142524
    Abstract: The present invention is generally directed to novel fuel compositions and to methods (i.e., processes) for enhancing the combustion efficiency and/or other properties of diesel fuels, particularly wherein such diesel fuels are, or comprise, biodiesel, such biodiesel typically having poorer low-temperature properties than traditional (petroleum) diesel. Generally, such fuel compositions are provided by the creation and inclusion of a quantity of one or more epoxy-ester species, such species serving as combustion improvers for the fuel composition of which they are part.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: March 27, 2012
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stephen H. Roby, Guangci Zhou
  • Patent number: 8057558
    Abstract: The present invention is generally directed to novel biodiesel fuel compositions having enhanced low-temperature properties. The present invention is additionally directed to methods (i.e., processes) for making such enhanced biodiesel fuels by improving the low-temperature properties of ester-based biodiesel fuels via in situ enhancement and/or additive enhancement.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: November 15, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Guangci Zhou, Curt Munson, Saleh Elomari, Stephen H. Roby
  • Publication number: 20110203165
    Abstract: The present invention is generally directed to novel biodiesel fuel compositions having enhanced low-temperature properties. The present invention is additionally directed to methods (i.e., processes) for making such enhanced biodiesel fuels by improving the low-temperature properties of ester-based biodiesel fuels via in situ enhancement and/or additive enhancement.
    Type: Application
    Filed: May 2, 2011
    Publication date: August 25, 2011
    Applicant: Chevron U.S.A. Inc.
    Inventors: Guangci ZHOU, Curt Munson, Saleh A. Elomari, Stephen H. Roby
  • Patent number: 7931703
    Abstract: The present invention is generally directed to novel biodiesel fuel compositions having enhanced low-temperature properties. The present invention is additionally directed to methods (i.e., processes) for making such enhanced biodiesel fuels by improving the low-temperature properties of ester-based biodiesel fuels via in situ enhancement and/or additive enhancement.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: April 26, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Stephen H. Roby, Guangci Zhou
  • 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
  • Publication number: 20100154291
    Abstract: The present invention is generally directed to novel biodiesel fuel compositions having enhanced low-temperature properties. The present invention is additionally directed to methods (i.e., processes) for making such enhanced biodiesel fuels by improving the low-temperature properties of ester-based biodiesel fuels via in situ enhancement and/or additive enhancement.
    Type: Application
    Filed: December 23, 2008
    Publication date: June 24, 2010
    Applicant: Chevron U.S.A. Inc.
    Inventors: Stephen H. Roby, Guangci Zhou
  • Publication number: 20100154292
    Abstract: The present invention is generally directed to novel biodiesel fuel compositions having enhanced low-temperature properties. The present invention is additionally directed to methods (i.e., processes) for making such enhanced biodiesel fuels by improving the low-temperature properties of ester-based biodiesel fuels via in situ enhancement and/or additive enhancement.
    Type: Application
    Filed: December 23, 2008
    Publication date: June 24, 2010
    Applicant: Chevron U.S.A. Inc.
    Inventors: Guangci Zhou, Curt Munson, Saleh Elomari, Stephen H. Roby
  • 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
  • Publication number: 20100077651
    Abstract: The present invention is generally directed to novel fuel compositions and to methods (i.e., processes) for enhancing the combustion efficiency and/or other properties of diesel fuels, particularly wherein such diesel fuels are, or comprise, biodiesel, such biodiesel typically having poorer low-temperature properties than traditional (petroleum) diesel. Generally, such fuel compositions are provided by the creation and inclusion of a quantity of one or more epoxy-ester species, such species serving as combustion improvers for the fuel composition of which they are part.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: Chevron U.S.A. Inc.
    Inventors: Stephen H. Roby, Guangci Zhou
  • 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
  • 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
  • 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
  • Patent number: 7454947
    Abstract: A method is described to determine the valve train wear performance of a lubricating oil by adding to the lubricating oil from about 2% to about 9% by weight, based on the total weight of the lubricating oil, of a mixture of at least three carbon black components of mixed particle size and measuring the wear induced in a wear test.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: November 25, 2008
    Assignee: Chevron Oronite Company LLC
    Inventor: Stephen H. Roby
  • 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
  • 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
  • Patent number: 6001783
    Abstract: This invention relates to a composition, comprising:(A) at least one compound selected from the group consisting of(A-1) a compound represented by the formulaT.sup.1 T.sup.2 --P(X.sup.1)--(S).sub.n --S--C (X.sup.2)--L.sup.1(A-I)(A-2) a compound represented by the formulaT.sup.3 T.sup.4 --P(X.sup.3)--(S).sub.n --S--(DMTD)--S--J (A-II)(A-3) a compound represented by the formulaL.sup.2 --C(X.sup.4)--(S).sub.n --S--(DMTD)--S--G (A-III)and(A-4) mixture of two or more of (A-1), (A-2) and (A-3);wherein in Formulae (A-I), (A-II) and (A-III): (DMTD) is a dimercaptothiadiazole nucleus; J is H, SR, --S--P(X.sup.5)--T.sup.5 T.sup.6 or --S--C(X.sup.6)-L.sup.3G is H, SR or --S--C(X.sup.7)--L.sup.4T.sup.1, T.sup.2, T.sup.3, T.sup.4, T.sup.5 and T.sup.6 are independently R, SR or OR; L.sup.1, L.sup.2, L.sup.3 and L.sup.4 are independently R, SR, OR or NRR; X.sup.1, X.sup.2, X.sup.3, X.sup.4, X.sup.5, X.sup.6 and X.sup.7 are independently O or S; each R is independently a hydrocarbyl group; and n is 1 to 4.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: December 14, 1999
    Assignee: The Lubrizol Corporation
    Inventors: John S. Manka, William D. Abraham, Stephen H. Roby, James A. Supp, Richard Yodice
  • Patent number: 5726132
    Abstract: This invention relates to compositions for improving fuel efficiency in internal combustion engines. The composition comprises a lubricant having an oil of lubricating viscosity and (A) a compound represented by the formula ##STR1## wherein in Formula (A-I), R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrocarbyl groups, X.sup.1 and X.sup.2 are independently O or S, and n is zero to 3; and (B) an acylated nitrogen-containing compound having a substituent of at least 10 aliphatic carbon atoms. In one embodiment, the inventive composition further comprises (C) a second phosphorus compound other than (A), said second phosphorus compound being a phosphorus acid, phosphorus acid ester, phosphorus acid salt, or derivative thereof. In one embodiment, the inventive composition further comprises (D) an alkali or alkaline earth metal salt of an organic sulfur acid, carboxylic acid or phenol. In one embodiment, the inventive composition further comprises (E) a thiocarbamate.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: March 10, 1998
    Assignee: The Lubrizol Corporation
    Inventors: Stephen H. Roby, James A. Supp, John S. Manka, William D. Abraham
  • Patent number: 5712230
    Abstract: This invention relates to a composition, comprising: (AT) reaction products of compounds represented by the formula (A)and compounds selected to reduce the polysulfide components of (A); and ##STR1## wherein in Formula (A), R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrocarbyl groups, X.sup.1 and X.sup.2 are independently O or S, and n is zero to 3 (B) an acylated nitrogen-containing compound having a substituent of at least 10 aliphatic carbon atoms. In one embodiment, the inventive composition further comprises (C) a second phosphorus compound other than (A), said second phosphorus compound being a phosphorus acid, phosphorus acid ester, phosphorus acid salt, or derivative thereof. In one embodiment, the inventive composition further comprises (D) an alkali or alkaline earth metal salt of an organic sulfur acid, carboxylic acid or phenol.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: January 27, 1998
    Assignee: The Lubrizol Corporation
    Inventors: William D. Abraham, John S. Manka, Stephen H. Roby, James A. Supp