Patents by Inventor Huw David Summers

Huw David Summers 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).

  • Semiconductor optical devices
    Patent number: 7504665
    Abstract: A semiconductor optical device (e.g. a resonant cavity device in this form of an LED or a laser) comprises a single substrate arranged for emitting light (O) for incidence on a sample or other element and also responsive to light (D), e.g. of a different wavelenght, received back from this sample or other element: the device further comprises means for monitoring a characteristic (e.g. its current-voltage characteristic) which varies in dependence upon the light (D) received back from the sample or other element.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: March 17, 2009
    Assignee: University College Cardiff Consultants, Ltd.
    Inventor: Huw David Summers