Patents by Inventor Erwin C. Buschmann

Erwin C. Buschmann 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).

  • Permeation barrier for display cells
    Patent number: 4315668
    Abstract: Cells, such as liquid crystal display cells, having a material contained between a pair of parallel, spaced-apart substrates, are sealed to prevent permeation therein of vapor which is potentially harmful to the material contained within the cell, by reducing the area of relatively high permeation material at the cell boundary and/or by completely enclosing the boundary in a permeation resistant barrier of inorganic material.
    Type: Grant
    Filed: November 14, 1980
    Date of Patent: February 16, 1982
    Assignee: General Electric Company
    Inventors: Siegfried Aftergut, Erwin C. Buschmann, Kenneth Q. Lao