Patents by Inventor Howard E. Stein

Howard E. Stein 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).

  • Variable sunshield
    Patent number: 4962780
    Abstract: A sunshield device is disclosed having two relatively movable, collapsible screen means fabricated of material which upon relative motion between screen means operates to filter, block, scatter and reduce the intensity of solar radiation. The desired effect is achieved by using polarizing film, imprinting patterns of opaque and have parent strips or dots so that upon rotation, translation or orbital motion of one screen means relative to another screen means virtually any desired intensity of solar radiation can be achieved including a complete solar block.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: October 16, 1990
    Assignee: Stenmisk, Incorporated
    Inventors: Lawrence W. Engdahl, Howard E. Stein