Patents by Inventor Simon Leong

Simon Leong 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).

  • Photodynamic therapy in selective cell inactivation in blood and treating immune dysfunction diseases
    Patent number: 7479503
    Abstract: Multiple sclerosis and rheumatoid arthritis can be treated effectively using photodynamic therapy. In this protocol, a photoactive compound is administered, allowed to distribute in the effected subject, and the subject is then irradiated to activate the photoactive compound. Alternatively, the blood of a subject to be treated can be subjected to PDT extracorporeally. In the case of rheumatoid arthritis, localized treatment at the joints may also be employed.
    Type: Grant
    Filed: January 31, 2005
    Date of Patent: January 20, 2009
    Assignees: QLT Inc., The University of British Columbia
    Inventors: Simon Leong, Agnes How-Ching Chan, David William Carey Hunt, Julia G. Levy, Martin Renke, Janice North
  • Model and method for angiogenesis inhibition
    Patent number: 6117862
    Abstract: The invention provides a method to inhibit the formation of neovasculature while maintaining viability of the underlying tissue by subjecting a subject in which angiogenesis is to be inhibited to sublethal photodynamic therapy. The invention also provides a model for assessing sublethal PDT protocols to inhibit angiogenesis in particular target tissues.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: September 12, 2000
    Assignee: QLT, Inc.
    Inventors: Philippe Maria Clotaire Margaron, Simon Leong, Julia G. Levy, Anna M. Richter
  • Method for selectively reducing activated leukocyte cell population
    Patent number: 5807881
    Abstract: Multiple sclerosis and rheumatoid arthritis can be treated effectively using photodynamic therapy. In this protocol, a photoactive compound is administered, allowed to distribute in the effected subject, and the subject is then irradiated to activate the photoactive compound. Alternatively, the blood of a subject to be treated can be subjected to PDT extracorporeally. In the case of rheumatoid arthritis, localized treatment at the joints may also be employed.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: September 15, 1998
    Assignees: Quadra Logic Technologies, Inc., University of British Columbia
    Inventors: Simon Leong, Agnes How-Ching Chan, David William Carey Hunt, Julia Levy, Martin Renke