Patents by Inventor Daniel L. Chess

Daniel L. Chess 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).

  • Infrared window materials and their fabrication
    Patent number: 4461750
    Abstract: Process for making densified ternary sulfide ceramics as infrared window erials using sulfide compounds MLn.sub.2 S.sub.4 belonging to the Th.sub.3 P.sub.4, CaFe.sub.2 O.sub.4 and spinel structure types. These refractory sulfides show good sinterability especially when fired in flowing hydrogen sulfide, and they can be densified by a combination of hot-pressing and hot-isostatic pressing into ceramic pieces approaching their theoretical density with closed pores and which have good transmission characteristics in the infrared region.
    Type: Grant
    Filed: August 23, 1982
    Date of Patent: July 24, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Daniel L. Chess, William B. White