Patents by Inventor Francis B. Makar, Jr.

Francis B. Makar, 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).

  • End seal for ceramic arc discharge tubes
    Patent number: 4803403
    Abstract: Sealing means for arc discharge tubes employ chamfers formed in the arc tube which mate with frusto-conical portions on sealing disks. Self-centering is thus provided as well as the elimination of one wire stop positioner for holding the sealing disks.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: February 7, 1989
    Assignee: GTE Products Corporation
    Inventors: Francis B. Makar, Jr., George A. Fryburg
  • Method of sealing alumina arc tube
    Patent number: 4147952
    Abstract: A niobium metal tube is sealed in the axial hole of a cylindrical alumina plug using a high temperature sealing glass and the plug is sealed in the end of an alumina arc tube.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: April 3, 1979
    Assignee: GTE Sylvania Incorporated
    Inventors: Edward A. Webb, Francis B. Makar, Jr., Nikolaos Barakitis
  • Method of sealing alumina arc tube
    Patent number: 3986236
    Abstract: A niobium metal tube is sealed in the axial hole of a cylindrical alumina plug using a high temperature sealing glass. The plug is then sealed, at a lower temperature, in the end of an alumina arc tube.
    Type: Grant
    Filed: December 12, 1974
    Date of Patent: October 19, 1976
    Assignee: GTE Sylvania Incorporated
    Inventors: Nikolaos Barakitis, Edward A. Webb, Francis B. Makar, Jr.