Patents by Inventor Paul L. Sargent

Paul L. Sargent 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).

  • Method of etching materials including a major constituent of tin oxide
    Patent number: 4040892
    Abstract: A method of etching a desired pattern in a layer of material including a major constituent of tin oxide is provided. A film of material which is resistant to the etching action of hot concentrated hydroiodic acid is formed on the layer and patterned. Portions of the layer uncovered by the patterned film are etched with hot concentrated hydroiodic acid.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: August 9, 1977
    Assignee: General Electric Company
    Inventors: Paul L. Sargent, Mario Ghezzo