Patents by Inventor Howard Simmons, III

Howard Simmons, III 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).

  • Biphenyl derivatives for photostabilization in pulsed optical darkening apparatus and method
    Patent number: 5080467
    Abstract: An apparatus for a liquid crystal image projection system having a liquid crystal cell, including optical apparatus for inducing a uniform texture of scattering centers in a liquid crystal cell by impinging a pulse of optical energy on the liquid crystal cell, thereby the optical energy is absorbed and converted to thermal energy heating the liquid cyrstal to a second temperture, the end of the pulse bringing about a cooling which causes the liquid crystal centers within the liquid crystal cells to scatter in a uniform texture.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: January 14, 1992
    Assignee: Greyhawk Systems, Inc
    Inventors: Frederic J. Kahn, Richard Albert, Jerry Leff, Evan D. Laganis, Howard Simmons, III