Patents by Inventor Mohammed Khawar Arshad Mairaj

Mohammed Khawar Arshad Mairaj 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 waveguide[[s]] and optical fiber perform including gallium, lanthanum, sulfur, oxygen, and fluorine
    Patent number: 7016593
    Abstract: An optical waveguide includes a clad of clad glass and a core of core glass. The clad glass includes gallium, lanthanum, and sulfur. The clad glass may include gallium sulfide and lanthanum oxide. The clad glass may also include lanthanum fluoride. The core glass includes gallium, lanthanum, sulfur, oxygen, and fluorine. The core glass may include gallium sulfide, lanthanum oxide, and lanthanum fluoride. An optical fiber perform is also disclosed.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: March 21, 2006
    Assignee: The University of Southampton
    Inventors: Daniel William Hewak, Mohammed Khawar Arshad Mairaj
  • Gallium lanthanum sulfide glasses and optical waveguides and devices using such glasses
    Patent number: 6803335
    Abstract: A new and improved hybrid of Ga:La:S (GLS) glass is provided, namely a glass comprising gallium sulfide, lanthanum oxide, and at least 2 mol % lanthanum fluoride. The Ga:La:S:O:F (GLSOF) glass retains the important properties of the Ga:La:S system, while introducing improved thermal stability and spectroscopic properties. In addition, GLSOF glasses are non-toxic. The glass formation region for GLSOF has been carefully evaluated with compositional variations. It has been identified that an area of glass formation as indicated by circles, is a new and previously undiscovered glass formation region.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: October 12, 2004
    Assignee: The University of Southampton
    Inventors: Daniel William Hewak, Mohammed Khawar Arshad Mairaj
  • Gallium lanthanum sulfide glasses and optical waveguides and devices using such glasses
    Publication number: 20030118315
    Abstract: A new and improved hybrid of Ga:La:S (GLS) glass is provided, namely a glass comprising gallium sulfide, lanthanum oxide, and at least 2 mol % lanthanum fluoride. The Ga:La:S:O:F (GLSOF) glass retains the important properties of the Ga:La:S system, while introducing improved thermal stability and spectroscopic properties. In addition, GLSOF glasses are non-toxic. The glass formation region for GLSOF has been carefully evaluated with compositional variations. It has been identified that an area of glass formation as indicated by circles, is a new and previously undiscovered glass formation region.
    Type: Application
    Filed: August 2, 2002
    Publication date: June 26, 2003
    Applicant: THE UNIVERSITY OF SOUTHAMPTON
    Inventors: Daniel William Hewak, Mohammed Khawar Arshad Mairaj