Patents by Inventor Alan G. Amrhein

Alan G. Amrhein 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).

  • Melting glass with two stage NO.sub.x control
    Patent number: 4372770
    Abstract: Afterburning is employed with selective, non-catalytic reduction by ammonia injection to reduce NO.sub.x emissions of a process furnace, especially a glass melting furnace.
    Type: Grant
    Filed: July 31, 1981
    Date of Patent: February 8, 1983
    Assignee: PPG Industries, Inc.
    Inventors: John F. Krumwiede, Alan G. Amrhein
  • Method of melting flat glass using nitrates to suppress sulfurous emissions
    Patent number: 4270945
    Abstract: Sulfurous emissions from a glass melting furnace are suppressed by including a nitrate oxidizing agent in the raw materials being fed into the furnace.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: June 2, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Alan G. Amrhein, Joseph J. Hammel, Larry J. Shelestak