Patents by Inventor Thomas J. Harris

Thomas J. Harris 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).

  • Liquid phase preparation of (meth)-acrylate from alpha-olefin
    Patent number: 5670702
    Abstract: A liquid phase process for the preparation of an (meth)-acrylate, such as methyl methacrylate, in the presence of water and a bi-functional, heterogeneous catalyst which contains both acidic and noble metal functional groups. The preferred (meth)-acrylate is methyl methacrylate (MMA). A surprising amount of MMA is produced, in spite of a competitive side reaction which produces methyl tertiary butyl ether (MTBE).
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: September 23, 1997
    Assignee: Queen's University at Kingston
    Inventors: Barrie W. Jackson, Thomas J. Harris
  • Logic gate system design
    Patent number: 4791578
    Abstract: A method for evaluating the testability of circuit systems containing a plurality of logic gates through evaluating statistical properties in response to selected inputs.
    Type: Grant
    Filed: December 30, 1986
    Date of Patent: December 13, 1988
    Assignee: ETA Systems, Inc.
    Inventors: Dennis Fazio, Thomas J. Harris
  • Friction heat generator
    Patent number: 4524755
    Abstract: An improved friction heater apparatus (10) comprises a thin walled metallic drum (25) sealed on both ends, having a centrally disposed axle (14) mounted therein, and a plurality of free floating friction elements (16) operatively associated with the axle (14), wherein the rotary motion of the axle will impart centrifugal force to the friction elements to radially displace the friction elements with respect to the axle, and into engagement with the wall of the metallic drum (25).
    Type: Grant
    Filed: April 5, 1984
    Date of Patent: June 25, 1985
    Inventors: Harold D. Harris, Thomas J. Harris