Patents by Inventor Jeffery A. Graves

Jeffery A. Graves 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).

  • Cathode in a layered circuit and electrochemical cell for measurement of oxygen in fluids
    Patent number: 5611902
    Abstract: The electrode of the present invention has metallic surface within a laser produced opening where the metallic surface extends into an electronic metallic conductive pathway and the pathway is covered for electric insulation by an encapsulant layer. The encapsulant layer around the metallic surface has the opening to allow the exposure of the metallic surface from the encapsulant layer. The metallic pathway and encapsulant are resident on a substrate, and are produced from layered circuitry. The electrochemical cell has the aforementioned electrode juxtaposed to another electrode. This electrode is part of the patterned metallic layer that is produced by layered circuitry. The electrode extends into an electronic metallic conductive pathway that is spaced apart and electronically insulated from the other pathway. The insulation can be supplied by a covering of encapsulant material that covers the pathway except does not cover the second electrode.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: March 18, 1997
    Assignee: PPG Industries, Inc.
    Inventors: Matthew J. Leader, Jeffery A. Graves
  • Cathode in a layered circuit and electrochemical cell for a measurement of oxygen in fluids
    Patent number: 5246576
    Abstract: The electrode of the present invention has metallic surface within a laser produced opening where the metallic surface extends into an electronic metallic conductive pathway and the pathway is covered for electric insulation by an encapsulant layer. The encapsulant layer around the metallic surface has the opening to allow the exposure of the metallic surface from the encapsulant layer. The metallic pathway and encapsulant are resident on a substrate, and are produced from layered circuitry. The electrochemical cell has the aforementioned electrode juxtaposed to another electrode. This electrode is part of the patterned metallic layer that is produced by layered circuitry. The electrode extends into an electronic metallic conductive pathway that is spaced apart and electronically insulated from the other pathway. The insulation can be supplied by a covering of encapsulant material that covers the pathway except does not cover the second electrode.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: September 21, 1993
    Assignee: PPG Industries, Inc.
    Inventors: Matthew J. Leader, Jeffery A. Graves