Patents by Inventor Dimitri Shamrakov

Dimitri Shamrakov 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).

  • Photochemical sensors and method for the production thereof
    Patent number: 6562424
    Abstract: The invention provides an indicator dye nanoporous photochemical sensor composite glass film, comprising a multiplicity of polyacrylate chains intertwined with a multiplicity of cross-linked networks of silica and doped with an indicator dye, wherein the film is formed with a plurality of nanopores sized in the range between 20 and 200 angstrom for the entry of analytes to be detected thereby.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: May 13, 2003
    Assignee: Yissum Research Development Company
    Inventors: Renata Reisfeld, Dimitri Shamrakov
  • Waveguide tunable lasers and processes for the production thereof
    Patent number: 5783319
    Abstract: A composite glass film waveguide tunable laser is described, wherein the film is about 10-80 wt. % silica, 20-90 wt. % metal oxide, and 0-90 wt. % polyacrylate, and the film is doped with a tunable organic monomeric laserdye and deposited on a substrate, said film having a higher refractive index than that of said substrate. Processes of preparation are also disclosed.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: July 21, 1998
    Assignee: Yissum Research Development Company of the Hebrew University of Jerusalem
    Inventors: Renata Reisfeld, Dimitri Shamrakov, Yoram Sorek