Patents by Inventor Donald Robert BELL

Donald Robert BELL 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).

  • GEAR OIL COMPOSITIONS
    Publication number: 20150038382
    Abstract: A gear oil composition, a method for operating an automotive gear, and a method for improving performance of a gear oil that includes a) a major amount of a base oil having a lubricating viscosity; b) a polysulfide extreme pressure agent; and c) a reaction product of an acylated copolymer and a polyamine.
    Type: Application
    Filed: October 17, 2014
    Publication date: February 5, 2015
    Applicant: AFTON CHEMICAL CORPORATION
    Inventors: Ian MACPHERSON, Donald Robert BELL, Akhilesh DUGGAL
  • Gear oil compositions
    Patent number: 8865633
    Abstract: A gear oil composition, a method for operating an automotive gear, and a method for improving performance of a gear oil that includes a) a major amount of a base oil having a lubricating viscosity; b) a polysulfide extreme pressure agent; and c) a reaction product of an acylated copolymer and a polyamine.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: October 21, 2014
    Assignee: Afton Chemical Corporation
    Inventors: Ian MacPherson, Donald Robert Bell, Akhilesh Duggal
  • GEAR OIL COMPOSITIONS
    Publication number: 20130053288
    Abstract: A gear oil composition, a method for operating an automotive gear, and a method for improving performance of a gear oil that includes a) a major amount of a base oil having a lubricating viscosity; b) a polysulfide extreme pressure agent; and c) a reaction product of an acylated copolymer and a polyamine.
    Type: Application
    Filed: August 24, 2011
    Publication date: February 28, 2013
    Applicant: AFTON CHEMICAL CORPORATION
    Inventors: Ian MACPHERSON, Donald Robert BELL, Akhilesh DUGGAL