Patents by Inventor Thomas G. Hach

Thomas G. Hach 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).

  • Metal free hydraulic fluid with amine salt
    Patent number: 5531911
    Abstract: Functional fluids comprising an oil of lubricating viscosity, the reaction product of an amine and a sulfonic acid, and at least one sulfur-containing compound of the structure(RX).sub.3 P.dbd.Xwhere X is sulfur or oxygen exhibit good anti-rust and antiwear performance.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 2, 1996
    Assignee: The Lubrizol Corporation
    Inventors: Paul E. Adams, Thomas G. Hach, James N. Vinci