Patents by Inventor Moshe Zangilbaf

Moshe Zangilbaf 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 filter software copy protection
    Patent number: 5233436
    Abstract: An interactive video system has a video display for displaying camouflaged information which is discernible only when viewed through a partially transparent viewing screen having zones with light transmission characteristics corresponding to the characteristic of respective displayed image regions. The user of the system is required to input information which can be derived only by recognizing the camouflaged information with the aid of the screen.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: August 3, 1993
    Inventors: Henry C. Oksman, Joseph Eisner, Moshe Zangilbaf