Patents by Inventor Paul A. Zak

Paul A. Zak 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).

  • Low dispersion infrared glass
    Patent number: 4492763
    Abstract: The present invention teaches infrared chalcogenide glass compositions having very low dispersion in the eight to twelve micron range, which are formed as III-V-VI-VII compositions, e.g. 14% (atomic) gallium plus 25% antimony plus 40% selenium plus 21% bromine. The introduction of a group VII component into a chalcogenide glass provides low dispersion, and the group III component compensates for the strong devitrification tendencies of the group VII component and maintains the mechanical properties of the glass.
    Type: Grant
    Filed: July 6, 1982
    Date of Patent: January 8, 1985
    Assignee: Texas Instruments Incorporated
    Inventors: Patrick A. Trotta, Paul A. Zak