Patents by Inventor Tsadok Tsalach

Tsadok Tsalach 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).

  • Optical glass elements having a graded refraction index for ir light and method for their production
    Patent number: 4867544
    Abstract: Optical glass elements with graded refraction index in the infra red region. The elements are made of doped oxygen free chalcogenide glass. The concentration of the dopant decreases from the periphery inward. Typical examples of dopants are As, S and Se.The glass elements are prepared by exposing an oxygen free chalcogenide glass to a molten chemical element or salt at about 150.degree.-400.degree. C. in an oxygen free atmosphere.
    Type: Grant
    Filed: August 11, 1988
    Date of Patent: September 19, 1989
    Assignee: The State of Israel, Atomic Energy Commission, Soreq Nuclear Research Center
    Inventors: Aharon Bornstein, Tsadok Tsalach