Patents by Inventor Valeria J. Epling

Valeria J. Epling 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).

  • Thorium-free coating for germanium IR window
    Patent number: 5537246
    Abstract: Durable thorium fluoride, low reflectance, high transmittance coatings for germanium (zinc sulfide, zinc selenide, gallium arsenide) exterior window surfaces are replaced using magnesium fluoride, a material previously not considered applicable to the 8 to 12 .mu.m wavelength range. This is enabled by the use of argon ion bombardment of the growing film. This method reduces the intrinsic stress of deposited films and permits growth of magnesium fluoride films of sufficient thickness to be used on the exterior surface of IR windows.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: July 16, 1996
    Assignee: Texas Instruments Incorporated
    Inventors: Frank C. Sulzbach, Valeria J. Epling
  • Thorium-free coating for germanium IR window
    Patent number: 5349467
    Abstract: Durable thorium fluoride, low reflectance, high transmittance coatings for germanium (zinc sulfide, zinc selenide, gallium arsenide) exterior window surfaces are replaced using magnesium fluoride, a material previously not considered applicable to the 8 to 12 .mu.m wavelength range. This is enabled by the use of argon ion bombardment of the growing film. This method reduces the intrinsic stress of deposited films and permits growth of magnesium fluoride films of sufficient thickness to be used on the exterior surface of IR windows.
    Type: Grant
    Filed: October 27, 1992
    Date of Patent: September 20, 1994
    Assignee: Texas Instruments Incorporated
    Inventors: Frank C. Sulzbach, Valeria J. Epling