Patents by Inventor Philip D. Constantine

Philip D. Constantine 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).

  • Optical package
    Patent number: 5016965
    Abstract: A lens assembly for focussing the light output of a device (2) on to a target (4), when there is relative movement between the target and device. The assembly comprises a pair of lenses with the device at the focus of the first and the target in the focal range of the second lens.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: May 21, 1991
    Assignee: British Telecommunications public limited company
    Inventors: Ian W. Marshall, Philip D. Constantine