Patents by Inventor John H. Shafer

John H. Shafer 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 molding glass elements and element made
    Patent number: 4139677
    Abstract: A method of molding glass elements requiring no further preparatory operations such as grinding or polishing before use wherein a portion of glass is heat-softened and subjected to pressure in a mold having molding surfaces formed of silicon carbide (SiC) or silicon nitride (Si.sub.3 N.sub.4).
    Type: Grant
    Filed: January 26, 1977
    Date of Patent: February 13, 1979
    Assignee: Eastman Kodak Company
    Inventors: Gerald E. Blair, John H. Shafer, John J. Meyers, Frank T. J. Smith