Patents by Inventor David Robert Wight

David Robert Wight 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).

  • Mid infrared light emitting diode
    Patent number: 5763906
    Abstract: A mid-infrared emitting diode with a substrate which is transparent to radiation produced by the device by virtue of the Moss-Burstein shift which is induced in the substrate by heavy doping. Emission from the device takes place via said substrate with a significant increase in external efficiency due to avoidance of obscuration by metallic contact.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: June 9, 1998
    Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britian and Northern Ireland
    Inventors: Michael John Kane, David Lee, David Robert Wight, John Michael Boud
  • Photocathodes
    Patent number: 3932883
    Abstract: A transmission photocathode comprising a crystal substrate transparent to the radiation to be detected, at least one epitaxial crystalline intermediate layer having a lattice constant close to that of the detector layer and transparent to the radiation to be detected, and a p-type group III-V compound detector layer. Preferably the intermediate layer is p-type.
    Type: Grant
    Filed: June 24, 1974
    Date of Patent: January 13, 1976
    Assignee: The British Secretary of State for Defense
    Inventors: Michael Charles Rowland, David Robert Wight