Patents by Inventor Paul I. Kingsbury, Jr.

Paul I. Kingsbury, Jr. 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).

  • Process for making gradient photochromic glass articles
    Patent number: 4160655
    Abstract: A process for the production of a gradient photochromic glass article comprising the selective over-nucleation of a limited portion of the article followed by a photochromic development heat treatment of the entire article, and the product of this process, are described.
    Type: Grant
    Filed: December 19, 1977
    Date of Patent: July 10, 1979
    Assignee: Corning Glass Works
    Inventors: Paul I. Kingsbury, Jr., Thomas P. Seward, III