Patents by Inventor David B. Gray

David B. Gray 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).

  • Patent number: 9677024
    Abstract: The present invention relates to an engine oil lubricant composition for use in internal combustion engines comprising one or more molybdenum containing compounds that deliver 1-1000 ppm molybdenum to the finished oil, one or more phosphorus containing compounds that deliver 25-650 ppm phosphorus to the finished oil, and one or more poly(meth)acrylate viscosity index improvers (VI improvers) that may or may not be functionalized, for improved fuel economy and turbocharger related deposits. In addition, the composition comprises an antioxidant system which is carefully balanced to provide improved fuel economy, comprising an aminic antioxidant, a phenolic antioxidant and an ashless dithiocarbamate. Additionally, the formulated oil may contain a dispersant poly(meth)acrylate, in addition to the PAMA VI improver, to reduce the amount of traditional succinimide dispersants.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: June 13, 2017
    Assignee: VANDERBILT CHEMICALS, LLC
    Inventors: Carl K. Esche, Glenn A. Mazzamaro, Thorsten Bartels, David B. Gray
  • Publication number: 20150133352
    Abstract: The present invention relates to an engine oil lubricant composition for use in internal combustion engines comprising one or more molybdenum containing compounds that deliver 1-1000 ppm molybdenum to the finished oil, one or more phosphorus containing compounds that deliver 25-650 ppm phosphorus to the finished oil, and one or more poly(meth)acrylate viscosity index improvers (VI improvers) that may or may not be functionalized, for improved fuel economy and turbocharger related deposits. In addition, the composition comprises an antioxidant system which is carefully balanced to provide improved fuel economy, comprising an aminic antioxidant, a phenolic antioxidant and an ashless dithiocarbamate. Additionally, the formulated oil may contain a dispersant poly(meth)acrylate, in addition to the PAMA VI improver, to reduce the amount of traditional succinimide dispersants.
    Type: Application
    Filed: June 5, 2013
    Publication date: May 14, 2015
    Applicant: VANDERBILT CHEMICALS, LLC
    Inventors: Carl K. Esche, Glenn A. Mazzamaro, Thorsten Bartels, David B. Gray
  • Publication number: 20090192063
    Abstract: There is disclosed a lubricating composition comprising an oil of lubricating viscosity formulated with an additive package comprising at least one overbased metal detergent, at least one neutral metal detergent, and at least one phosphorus-based wear preventative. Methods for improving oxidation performance in a TO-4 fluid for use in heavy vehicle machinery are also disclosed.
    Type: Application
    Filed: December 17, 2008
    Publication date: July 30, 2009
    Applicant: Afton Chemical Corporation
    Inventors: David B. Gray, Charles A. Passut, Lee D. Saathoff
  • Publication number: 20030124186
    Abstract: The present invention provides an efavirenz tablet formulation which, when administered as a single dose to a subject, provides a mean maximum plasma concentration (Cmax) of about 4 &mgr;M to about 14 &mgr;M, a mean time of maximum plasma concentration (Tmax) of about 2 hours to about 5 hours, and a mean area under the plasma concentration versus time curve from time zero to time infinity (AUC) of about 190 &mgr;M·hour to about 470 &mgr;M·hour.
    Type: Application
    Filed: November 26, 2002
    Publication date: July 3, 2003
    Inventors: Munir A. Hussain, Julia Zh. Gao, Rajeshwar Motheram, David B. Gray
  • Patent number: 4925184
    Abstract: A cycle-like exercise device for enabling post operative exercise by a patient while in bed. The leg exercise device is mountable to a bedframe and has a pedal mounting structure extending upwardly therefrom. Pedals are rotatably mounted to the pedal mounting structure so that when a patient's feet are engaged with the pedals of the exercise device, cycle-like exercise of the patient's legs is possible.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: May 15, 1990
    Inventors: Howard P. McJunkin, Jr., David B. Gray
  • Patent number: 4722541
    Abstract: Spray reduction means for moving vehicles are provided comprising at least one layer of non-woven fabric bonded to the surface of a backing containing channel means for draining water from the spray reduction means, said backing being capable of supporting the non-woven fabric. The spray reduction means is in the form of a laminate.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: February 2, 1988
    Assignee: Phillips Petroleum Company
    Inventors: David B. Gray, Frederick L. Stoller