Patents by Inventor John Altrip

John Altrip 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).

  • Light-emitting devices
    Patent number: 6801000
    Abstract: A light-emitting device comprising: a first electroluminescent element for emitting light of a first colour when energised; and a second electroluminescent element for emitting light of a second colour when energised, the first electroluminescent element having an active lifetime which is greater than that of the second electroluminescent element; characterised in that the second element is configured to operate at a lower brightness than the first element.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: October 5, 2004
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Jan Jongman, John Altrip, David Lacey
  • Light-emitting devices
    Publication number: 20040021423
    Abstract: A light-emitting device comprising: a first electroluminescent element for emitting light of a first colour when energised; and a second electroluminescent element for emitting light of a second colour when energised, the first electroluminescent element having an active lifetime which is greater than that of the second electroluminescent element; characterised in that the second element is configured to operate at a lower brightness than the first element.
    Type: Application
    Filed: June 18, 2003
    Publication date: February 5, 2004
    Inventors: Jan Jongman, John Altrip, David Lacey