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: 8106038Abstract: 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: GrantFiled: February 15, 2002Date of Patent: January 31, 2012Assignee: QLT Inc.Inventors: Philippe Maria Clotaire Margaron, Anna M. Richter, Julia G. Levy
-
Patent number: 7850981Abstract: 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: GrantFiled: November 9, 2004Date of Patent: December 14, 2010Assignees: QLT, Inc., University of British Columbia (UBC)Inventors: Patrick Mark Curry, Anna M. Richter, Julia G. Levy, David W. C. Hunt
-
Publication number: 20090203757Abstract: 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: ApplicationFiled: April 23, 2009Publication date: August 13, 2009Inventors: 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: 7264629Abstract: 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: GrantFiled: April 23, 2003Date of Patent: September 4, 2007Assignee: 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: 7122569Abstract: 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: GrantFiled: April 14, 2004Date of Patent: October 17, 2006Assignees: QLT, Inc. and, University of British ColumbiaInventors: 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: 7090691Abstract: 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: GrantFiled: November 8, 2002Date of Patent: August 15, 2006Assignee: QLT Inc.Inventors: Guillermo O. Simkin, Anna M. Richter, David W. C. Hunt, John Robert North, Peter Lutwyche, Ronald Erwin Boch
-
Patent number: 6756396Abstract: 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: GrantFiled: June 6, 2000Date of Patent: June 29, 2004Assignees: QLT Inc., The University of British ColumbiaInventors: Ethan Sternberg, David Dolphin, Julia G. Levy, Anna M. Richter, David W. C. Hunt, Ashok Jain, Elizabeth M. Waterfield, Ronald E. Boch
-
Publication number: 20040029856Abstract: 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: ApplicationFiled: April 23, 2003Publication date: February 12, 2004Inventors: Guillermo O. Simkin, Anna M. Richter, David W. C. Hunt, John Robert North, Peter Lutwyche, Ronald Erwin Boch, Jean-Marie Houle
-
Publication number: 20040015214Abstract: 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: ApplicationFiled: November 8, 2002Publication date: January 22, 2004Inventors: Guillermo O. Simkin, Anna M. Richter, David W. C. Hunt, John Robert North, Peter Lutwyche, Ronald Erwin Boch
-
Patent number: 6677366Abstract: 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: GrantFiled: August 13, 2001Date of Patent: January 13, 2004Assignees: QLT Inc., The University of British Columbia, Novartis AGInventors: Anna M. Richter, Julia G. Levy, Claude A. A. Hariton, Gustave Huber, William C. Stewart, Mario G. Fsadni, Modestus O. K. Obochi
-
Publication number: 20030083649Abstract: 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: ApplicationFiled: February 15, 2002Publication date: May 1, 2003Inventors: Philippe Maria Clotaire Margaron, Anna M. Richter, Julia G. Levy
-
Publication number: 20020103180Abstract: A method for reducing or preventing the effects of inflammation arising from injured tissue, which method comprises the steps of:Type: ApplicationFiled: August 13, 2001Publication date: August 1, 2002Inventors: Anna M. Richter, Julia G. Levy, Claude A. A. Hariton, Gustave Huber, William C. Stewart, Mario G. Fsadni
-
Publication number: 20020022032Abstract: 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: ApplicationFiled: January 9, 2001Publication date: February 21, 2002Inventors: Patrick Mark Curry, Anna M. Richter, Julia G. Levy, David W.C. Hunt
-
Patent number: 6274614Abstract: 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: GrantFiled: October 2, 1997Date of Patent: August 14, 2001Assignees: QLT Inc., The University of British Columbia, CIBA Vision AGInventors: Anna M. Richter, Julia G. Levy, Claude A. A. Hariton, Gustave Huber, William C. Stewart, Mario G. Fsadni
-
Patent number: 6248734Abstract: Photodynamic therapy to prevent secondary cataracts is effected using photosensitizers such as green porphyrins as photoactive agents to destroy remnant lens epithelial cells.Type: GrantFiled: March 27, 2000Date of Patent: June 19, 2001Assignees: QLT, Inc., The University of British Columbia, Ciba Vision OpthalmicsInventors: 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: 6153639Abstract: 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: GrantFiled: May 17, 1999Date of Patent: November 28, 2000Assignees: QLT PhotoTherapeutices Inc., The University of British ColumbiaInventors: Ethan Sternberg, David Dolphin, Julia G. Levy, Anna M. Richter, David W. C. Hunt, Ashok Jain, Elizabeth M. Waterfield, Ronald E. Boch
-
Patent number: 6117862Abstract: 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: GrantFiled: October 9, 1998Date of Patent: September 12, 2000Assignee: QLT, Inc.Inventors: Philippe Maria Clotaire Margaron, Simon Leong, Julia G. Levy, Anna M. Richter
-
Patent number: 6107325Abstract: 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: GrantFiled: May 18, 1998Date of Patent: August 22, 2000Assignees: QLT PhotoTherapeutics, Inc., The University of British ColumbiaInventors: Agnes H. Chan, David W. C. Hunt, Julia G. Levy, Modestus O. K. Obochi, Anna M. Richter, Guillermo O. Simkin
-
Patent number: 6096776Abstract: 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: GrantFiled: October 1, 1998Date of Patent: August 1, 2000Assignees: QLT PhotoTherapeutics, Inc., The University of British ColumbiaInventors: Agnes H. Chan, David W. C. Hunt, Julia G. Levy, Modestus O. K. Obochi, Anna M. Richter, Guillermo O. Simkin
-
Patent number: 6043237Abstract: Photodynamic therapy to prevent secondary cataracts is effected using photosensitizers such as green porphyrins as photoactive agents to destroy remnant lens epithelial cells.Type: GrantFiled: December 10, 1996Date of Patent: March 28, 2000Assignees: QLT PhotoTherapeutics, Inc., The University of the British of Columbia, Ciba Vision OpthalmicsInventors: 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