Patents by Inventor Mary P. Thomas

Mary P. Thomas 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).

  • Patent number: 4926879
    Abstract: A device for electrically stimulating the skin in response to an electrical signal includes a flexible substrate on one surface of which is formed an electrically conductive pattern having a number of electrodes. Each of the electrodes is coated with a layer of a corrosion resistive material, such as titanium. An insulating layer extends over this surface of the substrate and has apertures therethrough aligned with the electrodes. A conductive ground plane layer is then applied over the insulating layer and also has apertures therethrough which are aligned with each of the electrodes. The stimulator is placed against the user so that the coated electrodes are in contact with the skin. In response to the received electrical signal, each electrode is sequentially stimulated by a negative and a positive electrical pulse.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: May 22, 1990
    Assignee: Sevrain-Tech, Inc.
    Inventors: Christophe Jean-Paul Sevrain, Heather R. Schramm, Daniel G. Schmidt, Paul S. Hooper, Mary P. Thomas