Patents by Inventor Brian Leslie Slack

Brian Leslie Slack 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).

  • Grease containing diamine corrosion inhibitors
    Patent number: 5851969
    Abstract: The present invention is directed to a grease containing base oil, a thickener and a hydrocarbyl substituted diamine additive exhibiting enhanced resistance to corrosion.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: December 22, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: David Leslie Andrew, Brian Leslie Slack
  • Manufacturing method for the production of polyalphaolefin based synthetic greases (LAW500)
    Patent number: 5783531
    Abstract: A method is disclosed for improving the thickener yield in soap thickened polyalphaolefin base oil greases comprising the steps of (a) producing a simple or complex soap thickener in a quantity of a first PAO of viscosity lower than that of the base oil component in the final grease composition to produce a thickened PAO and (b) adding to the thickened PAO a quantity of a second PAO of viscosity higher than that desired of the base oil component in the final grease composition sufficient to produce a final grease product having the desired base oil viscosity.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: July 21, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: David Leslie Andrew, Brian Leslie Slack