Patents by Inventor Elizabeth Waterfield

Elizabeth Waterfield 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).

  • Ethylene glycol esters as photoactive agents
    Publication number: 20070191329
    Abstract: New compounds useful in photodynamic therapy are of the formula and their 1,4-diene isomers and the metallated and/or labeled and/or conjugated forms thereof wherein each R1 is independently alkyl(1-6C); each n is independently an integer of 0-6; and R2 is vinyl or a derivative form thereof.
    Type: Application
    Filed: September 20, 2006
    Publication date: August 16, 2007
    Applicant: QLT Inc.
    Inventors: Ethan Sternberg, David Dolphin, Julia Levy, Anna Richter, David Hunt, Ashok Jain, Elizabeth Waterfield, Ronald Boch, Andrew Tovey
  • Ethylene glycol esters as photoactive agents
    Publication number: 20050032769
    Abstract: New compounds useful in photodynamic therapy are of the formula and their 1,4-diene isomers and the metallated and/or labeled and/or conjugated forms thereof wherein each R1 is independently alkyl (1-6C); each n is independently an integer of 0-6; and R2 is vinyl or a derivative form thereof.
    Type: Application
    Filed: April 14, 2004
    Publication date: February 10, 2005
    Inventors: Ethan Sternberg, David Dolphin, Julia Levy, Anna Richter, David Hunt, Ashok Jain, Elizabeth Waterfield, Ronald Boch, Andrew Tovey
  • Method of activating photosensitive agents
    Patent number: 5770619
    Abstract: A method of administering photodynamic therapy begins with administering to an animal an effective amount of a photosensitizing agent which is less than about one half of the usual clinical dose for the photosensitizing agent. Then, following a post injection interval which is less about one quarter of the usual post injection interval, an effective dose of light which is less than about one half of the usual clinical dose of light used in conjunction with the photosensitizing agent is administered to the animal.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: June 23, 1998
    Assignee: University of British Columbia
    Inventors: Anna M. Richter, Elizabeth Waterfield, Julia G. Levy
  • Method of activating photosensitive agents
    Patent number: 5705518
    Abstract: A method of administering photodynamic therapy begins with administering to an animal an effective amount of a photosensitizing agent which is less than about one half of the usual clinical dose for the photosensitizing agent. Then, following a post injection interval which is less about one quarter of the usual post injection interval, an effective dose of light which is less than about one half of the usual clinical dose of light used in conjunction with the photosensitizing agent is administered to the animal.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: January 6, 1998
    Assignee: University of British Columbia
    Inventors: Anna M. Richter, Elizabeth Waterfield, Julia G. Levy