Patents by Inventor Michael N. Thakar

Michael N. Thakar 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).

  • Patent number: 4893903
    Abstract: A apparatus for providing a motorist advisory function similar to that of a flashing illuminated advisory sign, the apparatus having an electrically operable optical shutter positioned by means of a frame between one or more message signs and a viewing region. The optical shutter is made of a liquid crystal plastic material having a substantially opaque state, in which the message sign is not visible from a viewing region, and a transparent state in which the sign is visible over a relatively wide viewing angle. The state of the optical shutter is controlled by a flashing power supply circuit, the transparent state being achieved when power is applied to the optical shutter and the substantially opaque state being achieved when no power is applied. Several embodiments show use of the invention with conventional stationary message signs, a moveable message sign, and an embedded highway marker.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: January 16, 1990
    Assignee: Taliq Corporation
    Inventors: David H. Thakar, Michael N. Thakar