Patents by Inventor John J. Gutta

John J. Gutta 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 making direct seal between niobium and ceramics
    Patent number: 4545799
    Abstract: A high pressure arc lamp has a ceramic arc tube envelope. A niobium feedthrough positions electrodes within the tube. A ceramic insert at each end of the tube forms a direct high temperature hermetic seal with the niobium feedthrough and the ceramic tube without the use of frits or brazing.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: October 8, 1985
    Assignees: GTE Laboratories Incorporated, GTE Products Corporation
    Inventors: William H. Rhodes, Caryl S. Pitt, John J. Gutta
  • High pressure sodium lamp containing barium getter
    Patent number: 4333032
    Abstract: A high pressure sodium lamp comprises an elongated arc tube within an evacuated outer jacket, the arc tube containing a fill including sodium and mercury. A barium getter film is disposed on the inner jacket wall at one end thereof. The film is longitudinally spaced more than 1 cm away from the end of the arc tube in order to reduce photoelectron emission from the barium which can cause sodium migration from the arc tube.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: June 1, 1982
    Assignee: GTE Products Corporation
    Inventors: Elliot F. Wyner, John J. Gutta, Richard A. Parrott
  • High pressure sodium vapor lamp having low starting voltage
    Patent number: 4037129
    Abstract: The alumina arc tube of a high pressure sodium arc discharge lamp has a multiple turn wire starting aid wound therearound in order to reduce lamp starting voltage. The starting aid must extend longitudinally along the arc tube for a distance that is at least 10% of the arc length of the arc tube.
    Type: Grant
    Filed: March 10, 1976
    Date of Patent: July 19, 1977
    Assignee: GTE Sylvania Incorporated
    Inventors: Alexander T. Zack, John J. Gutta