Patents by Inventor Eric K. Riedel

Eric K. Riedel 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).

  • Multi-phase infrared transparent ceramic material
    Patent number: 11279657
    Abstract: Various embodiments disclosed relate to an optical window including an infrared light transmissive optical material. The optical material includes a first ceramic phase including a first ceramic material and a first dopant distributed therein. The optical material further includes a second ceramic phase homogenously intermixed with the first ceramic phase and comprising a second ceramic material and a second dopant distributed therein. The first dopant increases the refractive index of the first ceramic material and the second dopant decreases the refractive index of the second ceramic material. The first dopant and the second dopant are present in an amount such that a difference in a refractive index of the first ceramic phase and of the second ceramic phase is in a range of from about 0.001 to about 0.2.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: March 22, 2022
    Assignee: Raytheon Company
    Inventors: Eric K. Riedel, Thomas M. Hartnett
  • MULTI-PHASE INFRARED TRANSPARENT CERAMIC MATERIAL
    Publication number: 20210221742
    Abstract: Various embodiments disclosed relate to an optical window including an infrared light transmissive optical material. The optical material includes a first ceramic phase including a first ceramic material and a first dopant distributed therein. The optical material further includes a second ceramic phase homogenously intermixed with the first ceramic phase and comprising a second ceramic material and a second dopant distributed therein. The first dopant increases the refractive index of the first ceramic material and the second dopant decreases the refractive index of the second ceramic material. The first dopant and the second dopant are present in an amount such that a difference in a refractive index of the first ceramic phase and of the second ceramic phase is in a range of from about 0.001 to about 0.2.
    Type: Application
    Filed: June 11, 2020
    Publication date: July 22, 2021
    Inventors: Eric K. Riedel, Thomas M. Hartnett