Patents by Inventor Michael John McDermott

Michael John McDermott 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 device and medium therefor
    Patent number: 4018508
    Abstract: An electrochromic medium and electrochromic devices containing such mediums comprising an electrochromically active material, an auxiliary redox system comprising reversibly oxidizable metallic ions, for example iron, a complexing agent for the metallic ions, particularly a carboxylic acid such as tartaric acid, and an inert solvent.
    Type: Grant
    Filed: March 14, 1975
    Date of Patent: April 19, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventors: Michael John McDermott, John Graham Allen, Keith Jones, Peter Gordon Wright
  • Variable light transmission device containing ferrous ammonium sulfate as an auxiliary redox system
    Patent number: 3930717
    Abstract: A device for the control of light transmission or reflection comprises one or more working electrodes, preferably arranged to form a display and having radiation transmission or reflection properties, an active material comprising an N(p-cyanophenyl) substituted derivative of a compound, usually bicyclic, having two conjugated nitrogen-containing rings in contact with the working electrode surface, a counter electrode, also in contact with the active material and ferrous ammonium sulphate as an auxiliary redox system.
    Type: Grant
    Filed: March 15, 1974
    Date of Patent: January 6, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: Michael John McDermott, John Graham Allen