Patents by Inventor Leonard P. Warren

Leonard P. Warren 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: 10273428
    Abstract: A solid lubricant blend for enhancing lubricity of lubricating greases. The blend comprises a first stage solid lubricant selected from the group consisting of molybdenum disulfide, graphite, polytetrafluorethylene and mixtures thereof, a second stage solid lubricant of boron nitride, a third stage solid lubricant of an inorganic fluoride characterized by being capable of forming a bonded substantially homogeneous film on a substrate at the elevated temperatures and pressures, and graphene. The solid lubricant blend is mixed with a lubricating grease to attain the lubricating grease compositions of the invention.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: April 30, 2019
    Inventor: Leonard P. Warren
  • Patent number: 9494062
    Abstract: A method for ensuring a good ring seal is for use in assembling a new engine or rebuilding an engine. The method comprises in each aspect use of a start-up lubricating composition comprised of a powder blend of (a) molybdenum disulfide, tungsten disulfide or a mixture thereof, (b) boron nitride, and (c) an inorganic fluoride, all suspended in a carrier fluid.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: November 15, 2016
    Inventor: Leonard P. Warren
  • Patent number: 9206377
    Abstract: A lubricity enhancer at extreme temperatures and pressures comprises a first stage solid lubricant selected from the group consisting of molybdenum disulfide, graphite, polytetrafluorethylene and mixtures thereof, a second stage solid lubricant selected from the group consisting of boron nitride, tungsten disulfide and mixtures thereof, and a third stage solid lubricant of an inorganic fluoride characterized by being capable of forming a bonded substantially homogeneous film on a substrate at the elevated temperatures and pressures. The solid lubricants are blended in a concentrated form with a liquid carrier to form a lubricant additive concentrate for addition to a base oil or the solid lubricants are blended directly with the base oil to form a lubricating composition.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: December 8, 2015
    Inventor: Leonard P. Warren