Patents by Inventor Stuart Duncan McDougall

Stuart Duncan McDougall 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).

  • Method of manufacturing optical devices and related improvements
    Patent number: 6719884
    Abstract: A method of manufacturing an optical device, wherein the device body portion from which the device is to be made includes at least one Quantum Well, the method including the step of causing an impurity material including copper to intermix with the Quantum Well.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: April 13, 2004
    Assignee: Intense Photonics Limited
    Inventors: John Haig Marsh, Craig James Hamilton, Olek Peter Kowalski, Stuart Duncan McDougall, Xuefeng Liu, Bo-Cang Qui
  • Method of manufacturing optical devices and related improvements
    Patent number: 6632684
    Abstract: There is disclosed an improved method of manufacturing of an optical device (40), particularly semiconductor optoelectronic devices such as laser diodes, optical modulators, optical amplifiers, optical switches, and optical detectors. The invention provides a method of manufacturing optical device (40), a device body portion (15) from which the device (40) is to be made including a Quantum Well (QW) structure (30), the method including the step of: processing the device body portion (15) so as to create extended defects at least in a portion (53) of the device portion (5). Each extended defect is a structural defect comprising a plurality of adjacent “point” defects.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: October 14, 2003
    Assignee: The University Court of The University of Glasgow
    Inventors: John Haig Marsh, Craig James Hamilton, Stuart Duncan McDougall, Olek Peter Kowalski
  • Method of manufacturing optical devices and related improvements
    Publication number: 20030053789
    Abstract: There is disclosed an improved method of manufacturing an optical device using impurity induced Quantum Well Intermixing (QWI) process.
    Type: Application
    Filed: January 15, 2002
    Publication date: March 20, 2003
    Applicant: The University Court of the University of Glasgow
    Inventors: John Haig Marsh, Craig James Hamilton, Olek Peter Kowalski, Stuart Duncan McDougall, Xuefeng Liu, Bo-Cang Qui