Patents by Inventor Guillermo O. Simkin

Guillermo O. Simkin 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 for the treatment of hair loss
    Patent number: 7264629
    Abstract: Photodynamic therapy (PDT) is used to stimulate and/or restore hair growth in areas of hair loss. Methods and compositions relating to PDT treatment for alopecia are disclosed. In light of PDT use to remove unwanted hair by inactivating or destroying hair follicles or destroying the tissue feeding the hair follicles, such methods and compositions relate to a surprising and unexpected discovery. PDT permits a means to treat conditions relating to hair loss such as androgenic alopecia, alopecia areata and drug-induced alopecia.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: September 4, 2007
    Assignee: QLT, Inc.
    Inventors: Guillermo O. Simkin, Anna M. Richter, David W. C. Hunt, John Robert North, Peter Lutwyche, Ronald Erwin Boch, Jean-Marie Houle
  • Photodynamic therapy for the treatment of hair loss
    Patent number: 7090691
    Abstract: Photodynamic therapy (PDT) is used to stimulate and/or restore hair growth in areas of hair loss. Methods and compositions relating to PDT treatment for alopecia are disclosed. In light of PDT use to remove unwanted hair by inactivating or destroying hair follicles or destroying the tissue feeding the hair follicles, such methods and compositions relate to a surprising and unexpected discovery. PDT permits a means to treat conditions relating to hair loss such as androgenic alopecia, alopecia areata and drug-induced alopecia.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: August 15, 2006
    Assignee: QLT Inc.
    Inventors: Guillermo O. Simkin, Anna M. Richter, David W. C. Hunt, John Robert North, Peter Lutwyche, Ronald Erwin Boch
  • Photodynamic therapy for the treatment of hair loss
    Publication number: 20040029856
    Abstract: Photodynamic therapy (PDT) is used to stimulate and/or restore hair growth in areas of hair loss. Methods and compositions relating to PDT treatment for alopecia are disclosed. In light of PDT use to remove unwanted hair by inactivating or destroying hair follicles or destroying the tissue feeding the hair follicles, such methods and compositions relate to a surprising and unexpected discovery. PDT permits a means to treat conditions relating to hair loss such as androgenic alopecia, alopecia areata and drug-induced alopecia.
    Type: Application
    Filed: April 23, 2003
    Publication date: February 12, 2004
    Inventors: Guillermo O. Simkin, Anna M. Richter, David W. C. Hunt, John Robert North, Peter Lutwyche, Ronald Erwin Boch, Jean-Marie Houle
  • Photodynamic therapy for the treatment of hair loss
    Publication number: 20040015214
    Abstract: Photodynamic therapy (PDT) is used to stimulate and/or restore hair growth in areas of hair loss. Methods and compositions relating to PDT treatment for alopecia are disclosed. In light of PDT use to remove unwanted hair by inactivating or destroying hair follicles or destroying the tissue feeding the hair follicles, such methods and compositions relate to a surprising and unexpected discovery. PDT permits a means to treat conditions relating to hair loss such as androgenic alopecia, alopecia areata and drug-induced alopecia.
    Type: Application
    Filed: November 8, 2002
    Publication date: January 22, 2004
    Inventors: Guillermo O. Simkin, Anna M. Richter, David W. C. Hunt, John Robert North, Peter Lutwyche, Ronald Erwin Boch
  • Green porphyrins as immunomodulators
    Patent number: 6107325
    Abstract: Green porphyrins act as antigen-specific immunomodulators in the active phase of an immune response to a particular antigen. This effect occurs at ambient light levels.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: August 22, 2000
    Assignees: QLT PhotoTherapeutics, Inc., The University of British Columbia
    Inventors: Agnes H. Chan, David W. C. Hunt, Julia G. Levy, Modestus O. K. Obochi, Anna M. Richter, Guillermo O. Simkin
  • Green porphyrins as immunomodulators
    Patent number: 6096776
    Abstract: Green porphyrins act as antigen-specific immunomodulators in the active phase of an immune response to a particular antigen, as well as to interfere with intercellular communication. These effects occur in the absence of radiation absorbed by the green porphyrin.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: August 1, 2000
    Assignees: QLT PhotoTherapeutics, Inc., The University of British Columbia
    Inventors: Agnes H. Chan, David W. C. Hunt, Julia G. Levy, Modestus O. K. Obochi, Anna M. Richter, Guillermo O. Simkin
  • Green porphyrins as immunomodulators
    Patent number: 6008241
    Abstract: Green porphyrins act as antigen-specific immunomodulators in the active phase of an immune response to a particular antigen. This effect occurs at ambient light levels.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: December 28, 1999
    Assignee: QLT PhotoTherapeutics, Inc.
    Inventors: Agnes H. Chan, David W. C. Hunt, Julia G. Levy, Modestus O. K. Obochi, Anna M. Richter, Guillermo O. Simkin
  • Green porphyrins as immunomodulators
    Patent number: 5789433
    Abstract: Green porphyrins act as antigen-specific immunomodulators in the active phase of an immune response to a particular antigen, as well as to interfere with intercellular communication. These effects occur in the absence of radiation absorbed by the green porphyrin.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: August 4, 1998
    Assignee: Quadra Logic Technologies, Inc.
    Inventors: Agnes How-Ching Chan, David William Carey Hunt, Julia Levy, Modestus Onuora Kay Obochi, Anna Richter, Guillermo O. Simkin