Patents by Inventor Anna M. Richter

Anna M. Richter 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).

  • Patent number: 8106038
    Abstract: This invention relates generally to the field of pharmacotherapeutics and the use of photodynamic therapy (“PDT”). In particular, the invention provides a method for reducing or preventing the effects of inflammation arising from normal dose photodynamic therapy (PDT), which method comprises exposing a target tissue in a subject that has been treated with normal dose PDT treatment to low dose light having a wavelength absorbed by a photosensitizing agent used in said normal dose PDT treatment for a time sufficient to reduce or prevent the effects of inflammation arising from said normal dose PDT treatment. The method is particularly useful in reducing or preventing the effects of inflammation arising from normal dose PDT treatment of ocular tissues.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: January 31, 2012
    Assignee: QLT Inc.
    Inventors: Philippe Maria Clotaire Margaron, Anna M. Richter, Julia G. Levy
  • Patent number: 7850981
    Abstract: Immuno-adjuvant photodynamic therapy to treat and prevent metastatic cancer is effected using photosensitizers in combination with immuno-adjuvants to destroy metastatic tumor cells.
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: December 14, 2010
    Assignees: QLT, Inc., University of British Columbia (UBC)
    Inventors: Patrick Mark Curry, Anna M. Richter, Julia G. Levy, David W. C. Hunt
  • Publication number: 20090203757
    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 23, 2009
    Publication date: August 13, 2009
    Inventors: Ethan D. STERNBERG, David DOLPHIN, Julia G. LEVY, Anna M. RICHTER, David W.C. HUNT, Ashok JAIN, Elizabeth M. WATERFIELD, Ronald E. BOCH, Andrew Norman TOVEY
  • 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
  • Patent number: 7122569
    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: Grant
    Filed: April 14, 2004
    Date of Patent: October 17, 2006
    Assignees: QLT, Inc. and, University of British Columbia
    Inventors: Ethan D. Sternberg, David Dolphin, Julia G. Levy, Anna M. Richter, David W. C. Hunt, Ashok Jain, Elizabeth M. Waterfield, Ronald E. Boch, Andrew Norman Tovey
  • 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
  • Patent number: 6756396
    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: Grant
    Filed: June 6, 2000
    Date of Patent: June 29, 2004
    Assignees: QLT Inc., The University of British Columbia
    Inventors: Ethan Sternberg, David Dolphin, Julia G. Levy, Anna M. Richter, David W. C. Hunt, Ashok Jain, Elizabeth M. Waterfield, Ronald E. Boch
  • 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
  • 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
  • Patent number: 6677366
    Abstract: A method for reducing or preventing the effects of inflammation arising from injured tissue, which method comprises the steps of: a. bringing the injured tissue, or pre-injured tissue, into contact with a photosensitizing agent capable of penetrating into the tissue, resulting in the desired degree of biodistribution in less than one hour; and b. exposing the tissue thus contacted to light having a wavelength absorbed by the photosensitizing agent for a time sufficient to reduce or prevent inflammation in the exposed tissue, but not so long as to cause necrosis or erythema of the exposed tissue, or a pharmaceutical composition or an article for reducing or preventing the effects of inflammation arising from injured tissue. The composition comprises: a. from about 1 &mgr;g/mL to about 2 mg/mL of a photosensitizing agent capable of penetrating into the injured tissue, or pre-injured tissue, resulting in the desired degree of biodistribution less than one hour; and b. a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: January 13, 2004
    Assignees: QLT Inc., The University of British Columbia, Novartis AG
    Inventors: Anna M. Richter, Julia G. Levy, Claude A. A. Hariton, Gustave Huber, William C. Stewart, Mario G. Fsadni, Modestus O. K. Obochi
  • Publication number: 20030083649
    Abstract: This invention relates generally to the field of pharmacotherapeutics and the use of photodynamic therapy (“PDT”). In particular, the invention provides a method for reducing or preventing the effects of inflammation arising from normal dose photodynamic therapy (PDT), which method comprises exposing a target tissue in a subject that has been treated with normal dose PDT treatment to low dose light having a wavelength absorbed by a photosensitizing agent used in said normal dose PDT treatment for a time sufficient to reduce or prevent the effects of inflammation arising from said normal dose PDT treatment. The method is particularly useful in reducing or preventing the effects of inflammation arising from normal dose PDT treatment of ocular tissues.
    Type: Application
    Filed: February 15, 2002
    Publication date: May 1, 2003
    Inventors: Philippe Maria Clotaire Margaron, Anna M. Richter, Julia G. Levy
  • Publication number: 20020103180
    Abstract: A method for reducing or preventing the effects of inflammation arising from injured tissue, which method comprises the steps of:
    Type: Application
    Filed: August 13, 2001
    Publication date: August 1, 2002
    Inventors: Anna M. Richter, Julia G. Levy, Claude A. A. Hariton, Gustave Huber, William C. Stewart, Mario G. Fsadni
  • Publication number: 20020022032
    Abstract: Immuno-adjuvant photodynamic therapy to treat and prevent metastatic cancer is effected using photosensitizers in combination with immuno-adjuvants to destroy metastatic tumor cells.
    Type: Application
    Filed: January 9, 2001
    Publication date: February 21, 2002
    Inventors: Patrick Mark Curry, Anna M. Richter, Julia G. Levy, David W.C. Hunt
  • Patent number: 6274614
    Abstract: A method for reducing or preventing the effects of inflammation arising from injured tissue, which method comprises the steps of: a. bringing the injured tissue, or pre-injured tissue, into contact with a photosensitizing agent capable of penetrating into the tissue, resulting in the desired degree of biodistribution in less than one hour; and b. exposing the tissue thus contacted to light having a wavelength absorbed by the photosensitizing agent for a time sufficient to reduce or prevent inflammation in the exposed tissue, but not so long as to cause necrosis or erythema of the exposed tissue, or a pharmaceutical composition or an article for reducing or preventing the effects of inflammation arising from injured tissue. The composition comprises: a. from about 1 &mgr;/mL to about 2 mg/mL of a photosensitizing agent capable of penetrating into the injured tissue, or pre-injured tissue, resulting in the desired degree of biodistribution less than one hour; and b. a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: August 14, 2001
    Assignees: QLT Inc., The University of British Columbia, CIBA Vision AG
    Inventors: Anna M. Richter, Julia G. Levy, Claude A. A. Hariton, Gustave Huber, William C. Stewart, Mario G. Fsadni
  • Patent number: 6248734
    Abstract: Photodynamic therapy to prevent secondary cataracts is effected using photosensitizers such as green porphyrins as photoactive agents to destroy remnant lens epithelial cells.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: June 19, 2001
    Assignees: QLT, Inc., The University of British Columbia, Ciba Vision Opthalmics
    Inventors: Howard E. Meadows, Danielle Wenkstern, David R. Mallek, Marcello Nick Bussanich, Anna M. Richter, Julia G. Levy, Claude A. A. Hariton, Gustav Huber, Jack Rootman
  • Patent number: 6153639
    Abstract: New compounds useful in photodynamic therapy are of the formula ##STR1## and their 1,4-diene isomers and the metallated and/or labeled and/or conjugated forms thereofwherein each R.sup.1 is independently alkyl (1-6C);each n is independently an integer of 0-6; andR.sup.2 is vinyl or a derivative form thereof.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: November 28, 2000
    Assignees: QLT PhotoTherapeutices Inc., The University of British Columbia
    Inventors: Ethan Sternberg, David Dolphin, Julia G. Levy, Anna M. Richter, David W. C. Hunt, Ashok Jain, Elizabeth M. Waterfield, Ronald E. Boch
  • 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
  • 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
  • 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
  • Patent number: 6043237
    Abstract: Photodynamic therapy to prevent secondary cataracts is effected using photosensitizers such as green porphyrins as photoactive agents to destroy remnant lens epithelial cells.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: March 28, 2000
    Assignees: QLT PhotoTherapeutics, Inc., The University of the British of Columbia, Ciba Vision Opthalmics
    Inventors: Howard E. Meadows, Danielle Wenkstern, David R. Mallek, Marcello Nick Bussanich, Anna M. Richter, Julia G. Levy, Claude A. A. Hariton, Gustav Huber, Jack Rootman