Patents by Inventor Vladimir A. Joshkin

Vladimir A. Joshkin 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).

  • X-ray detector with photodetector embedded in scintillator
    Publication number: 20070272872
    Abstract: An X-ray detector includes one or more photodetectors embedded in scintillating material. The photodetectors may have a needle-like, a column-like, or a ridge-like structure. The scintillating material is applied over the photodetector which can either be a p?i?n type diode, an n?i?p type diode, a Schottky diode, or an avalanche diode.
    Type: Application
    Filed: May 24, 2006
    Publication date: November 29, 2007
    Applicant: Bruker AXS, Inc.
    Inventors: Vladimir A. Joshkin, Yacouba Diawara, Roger D. Durst
  • Thin film lithium niobate and method of producing the same
    Patent number: 6846428
    Abstract: Metal oxide films such as lithium niobate are formed in an amorphous state on a substrate such as lithium niobate and can be readily etched by conventional liquid or dry etchants. The amorphous film may then be converted by annealing to a crystalline form well suited to formation of electro-optical devices.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: January 25, 2005
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Leon McCaughan, Thomas F. Kuech, Dovas A. Saulys, Vladimir A. Joshkin, Aref Chowdhury
  • Electro-optic optical elements
    Patent number: 6545791
    Abstract: Electro-optic elements are formed in metal oxide films, such as lithium niobate, on a substrate such as lithium niobate for utilization in electro-optical devices. The electro-optic elements include trenches in the lithium niobate selected to improve the performance of the device. Traveling wave modulators may be formed with a waveguide having first and second arms, electrodes over the lithium niobate layer, and trenches formed in the layer to focus the electric field in the waveguide, resulting in improved modulator performance.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: April 8, 2003
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Leon McCaughan, Thomas F. Kuech, Dovas A. Saulys, Vladimir A. Joshkin, Aref Chowdhury, Chad Matthew Staus
  • Thin film lithium niobate and method of producing the same
    Publication number: 20020182322
    Abstract: Metal oxide films such as lithium niobate are formed in an amorphous state on a substrate such as lithium niobate and can be readily etched by conventional liquid or dry etchants. The amorphous film may then be converted by annealing to a crystalline form well suited to formation of electro-optical devices.
    Type: Application
    Filed: March 14, 2002
    Publication date: December 5, 2002
    Inventors: Leon McCaughan, Thomas F. Kuech, Dovas A. Saulys, Vladimir A. Joshkin, Aref Chowdhury