Patents by Inventor Richard L. Gerutti

Richard L. Gerutti 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 vacuum refining of glassy materials with selenium foaming agent
    Patent number: 4886539
    Abstract: In a method of vacuum refining molten glass or the like, selenium is provided in the molten glass to serve as a foaming agent, which yields improved refining. Alternatively, colored glass compositions that include selenium as a colorant are refined at higher than normal pressures to retain selenium in the glass without sacrificing refining performance.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: December 12, 1989
    Assignee: PPG Industries, Inc.
    Inventors: Richard L. Gerutti, David R. Haskins, Robert B. Heithoff, Ronald L. Schwenninger, Wright M. Welton