Patents by Inventor David Howart

David Howart 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 cell, its use in the realization of a glass pane or a rear-view mirror and its realization method
    Patent number: 7511874
    Abstract: The present invention concerns an electrochromic cell comprising a layer (4) of electrochromic material to which an electrolyte layer (3) is applied, means (7, 8, 9) being designed to establish a potential difference between these layers; said electrolyte comprises at least one compound of general formula: Na1+xZr2SixP3?xO12??(1) in which x is chosen to respond to the following conditions: 1, 6?x?2, 4. The present invention also concerns a glass pane or a rear-view mirror including such a cell.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: March 31, 2009
    Inventors: Bernard Duroux, Allan Billard, David Howart
  • Electrochromic Cell, its Use in the Realization of a Glass Pane or a Rear-view Mirror and its Realization Method
    Publication number: 20080144162
    Abstract: The present invention concerns an electrochromic cell comprising a layer (4) of electrochromic material to which an electrolyte layer (3) is applied, means (7, 8, 9) being designed to establish a potential difference between these layers; said electrolyte comprises at least one compound of general formula: Na1+xZr2SixP3?xO12 ??(1) in which x is chosen to respond to the following conditions: 1, 6?x?2, 4. The present invention also concerns a glass pane or a rear-view mirror including such a cell.
    Type: Application
    Filed: May 30, 2007
    Publication date: June 19, 2008
    Applicant: Schefenacker Vision Systems France S.A.
    Inventors: Bernard Duroux, Allan Billard, David Howart