Patents by Inventor Alexandr E. Dydelzak

Alexandr E. Dydelzak 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).

  • Photochromic and/or cathodochromic sodalite material, method of its preparation, and sensing element of a variable light transmission device manufactured from such material
    Patent number: 4490286
    Abstract: A photochromic and/or cathodochromic sodalite material according to the invention represents a transparent monolith with a homogeneous polycrystalline structure and has a density in excess of 99% of the theoretical density of sodalite with an identical chemical composition. Such material is prepared by hot moulding of the sodalite powder obtained by any method under conditions preventing intense evaporation of alkali halides and incongruent melting of the sodalite. The sensing element of the prepared material is made in the form of a plate with its thickness chosen according to the desired sensitivity of radiation registration and the desired contrast ratio of the image stored as the sensing element is in transparent mode of operation.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: December 25, 1984
    Assignee: Institut Fiziki Akademii Nauk Estonskoi SSR
    Inventors: Filipp K. Volynets, Vladimir A. Demidenko, Roman A. Denisov, Viktor P. Denx, Alexandr E. Dydelzak, Engels N. Ryzhikov, Evgenia A. Terentieva