Patents by Inventor Michael J. Van Ast

Michael J. Van Ast 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).

  • Electrochromic assembly including at least one polymeric substrate
    Patent number: 6193379
    Abstract: An electrochromic assembly includes a transparent front element and a rear element each having front and rear surfaces. At least one of the front and rear elements is made from a plastic that maintains its integrity when exposed to organic solvents. A layer of transparent conductive material is disposed on the rear surface of the front element. A layer of conductive material is also disposed on the front surface of the rear element. The front element and the rear element when joined form a chamber therebetween. The chamber contains at least one electrochromic material in solution with the organic solvent, which is effective to attenuate light passing therethrough.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: February 27, 2001
    Assignee: Gentex Corporation
    Inventors: William L. Tonar, Michael J. Van Ast