Patents by Inventor Jack Mack Strok

Jack Mack Strok 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).

  • Patent number: 6498429
    Abstract: A mercury-free high pressure sodium vapor lamp is dosed with sodium, xenon and zinc as an elemental metal additive. The addition of the metal additive prevents an undesirable low-voltage operating mode of the sodium-xenon discharge associated with a mercury-free HPS lamp, which otherwise occurs when sodium is no longer available to participate in the arc discharge.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: December 24, 2002
    Assignee: General Electric Company
    Inventors: János Sneider, Jack Mack Strok, Zoltán Tóth, István Csányi