Patents by Inventor Mary T. Caton

Mary T. Caton 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).

  • Tactile membrane keyboard with elliptical tactile key elements
    Patent number: 4477700
    Abstract: A tactile or snap action membrane keyboard is presented wherein the tactile or snap action key elements are protrusions in a membrane sheet, each protrusion having a flat elliptical top surface or plateau with a plurality of inclined ramps from the base sheet to the plateau.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: October 16, 1984
    Assignee: Rogers Corporation
    Inventors: Frederick A. Balash, Mary T. Caton