Patents by Inventor Walter Logan Leslie

Walter Logan Leslie 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).

  • Low friction grease for constant velocity universal joints, particularly plunging type joints that is compatible with silicone elastomer boots
    Patent number: 6376432
    Abstract: A silicon elastomer compatible constant velocity joint grease comprises a urea grease composed of a lubricating oil and a urea thickener and an effective amount of a friction reducing additive package comprising vermiculite, molybdenum oxysulfide dithiocarbamate, polyphenylene sulfide and potassium triborate. The additive package solids have particle sizes below about 40 microns.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: April 23, 2002
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Walter Logan Leslie, Jon Carl Root