Patents by Inventor John A. Boslett

John A. Boslett 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).

  • Extreme pressure additives for lubricants
    Patent number: 4149982
    Abstract: Extreme pressure additives are provided which are used in lubricant compositions. The extreme pressure additives of this invention are prepared by sulfurizing a mixture comprised of (a) 50-85% by weight of an ester of a higher fatty acid and glycerol, or a mono-lower-aliphatic ester of fatty acid, or mixtures thereof and (b) 50-15% by weight of a mono-alpha-unsaturated olefin having about 15-20 carbon atoms. The extreme pressure additives of this invention are especially useful in improving the high pressure characteristics of greases, gear oils, way lubricants and the like.
    Type: Grant
    Filed: March 20, 1972
    Date of Patent: April 17, 1979
    Assignee: The Elco Corporation
    Inventors: Donald A. Lee, John A. Boslett