Patents by Inventor Joel P. Warschawski

Joel P. Warschawski 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).

  • Protected silvered substrates and mirrors containing the same
    Patent number: 5019458
    Abstract: The invention provides a protected silvered substrate of the type comprising in combination, a substrate having a layer of substantially silver deposited thereon, a layer of aluminum oxide secured to the silver layer, and a layer of silicon dioxide secured to the layer of aluminum oxide, characterized by a layer of zinc sulfide between the layer of substantially silver and the layer of aluminum oxide to improve the adhesion of the alumina to the silver and front surface mirrors and low emissivity glass utilizing the same.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: May 28, 1991
    Assignee: Luz Industries Israel, Ltd.
    Inventors: Zvi Elgat, Joel P. Warschawski