Patents by Inventor Byron Robinson

Byron Robinson 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).

  • Publication number: 20050226810
    Abstract: Substituted porphyrin and azaporphyrin deviations with various substitutents in the 12- and 17-positions of the prophyrin skeleton as pharmaceutical agents for use in photodynamic therapy, MRI diagnosis, and radiodiagnostics.
    Type: Application
    Filed: February 17, 2005
    Publication date: October 13, 2005
    Inventor: Byron Robinson
  • Publication number: 20050137180
    Abstract: Metallotetrapyrrolic compounds having photherapeutic properties useful in photodetection and phototherapy of target issues, particularly porphyrins and azaporphyrins that including gallium in the central pyrrolic core. Also disclosed are methods of using metallotetrapyrrolic compounds for the treatment or detection of cardiovascular disease.
    Type: Application
    Filed: October 18, 2004
    Publication date: June 23, 2005
    Inventors: Byron Robinson, Ian Leitch, Stephanie Greene, Steve Rychnovsky
  • Publication number: 20050020560
    Abstract: The present invention provides a process of preparation of naphthochlorins and other chlorins with annelated ring systems useful for photodynamic therapy and the compounds themselves. The method for producing naphthochlorin compounds include contacting compounds such as meso-(2?-hydroxymethyl)phenyl porphyrin or meso-(2?-N,N,N-trialkylaminomethyl)phenyl porphyrin precursors with at least one acid catalyst at sufficient temperature for a sufficient time to yield the desired conversion. In a similar manner chlorins possessing annelated ring systems may be made from compounds such as meso-(2?-hydroxymethyl)aryl porphyrins or meso-(2?-N,N,N-trialkylaminomethyl)phenyl porphyrin. The procedures described herein provide new routes for synthesizing naphthochlorins and chlorins with annelated ring systems.
    Type: Application
    Filed: August 23, 2004
    Publication date: January 27, 2005
    Inventors: Byron Robinson, Dipanjan Sengupta, Avinash Phadke
  • Publication number: 20050020559
    Abstract: Chlorin compounds and compositions useful in photodynamic therapy for treating ophtalmic, cardiovascular, skin, and cancer or malignant diseases.
    Type: Application
    Filed: October 2, 2002
    Publication date: January 27, 2005
    Inventors: Byron Robinson, Avinash Phadke
  • Patent number: 6054449
    Abstract: A broad class of photosensitive compounds having enhanced in vivo target tissue selectivity and versatility in photodynamic therapy. Many furocoumarin compounds, such as psoralens, exhibit cytostatic activity when photoactivated but exhibit little in vivo specificity for selectively accumulating in any particular target tissue such as atheromatous plaques. Reactive Oxygen Producing Photosensitizers ("ROPPs") are photoactivatable compounds having an affinity for hyperproliferating cells (such as atheromatous plaque cells), which when photoactivated, produce cytotoxic reaction products. The photoactivity of a ROPP, such as a porphyrin, may be reduced by metalating the porphyrin while the selective affinity of the metalized ROPP for hyperproliferating tissue remains substantially unchanged.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: April 25, 2000
    Assignee: Miravant Pharmaceuticals, Inc.
    Inventors: Byron Robinson, Alan R. Morgan, Hugh L. Narciso, Jr.
  • Patent number: 6008211
    Abstract: A broad class of photosensitive compounds having enhanced in vivo target tissue selectivity and versatility in photodynamic therapy. Many furocoumarin compounds, such as psoralens, exhibit cytostatic activity when photoactivated but exhibit little in vivo specificity for selectively accumulating in any particular target tissue such as atheromatous plaques. Reactive Oxygen Producing Photosensitizers ("ROPPs") are photoactivatable compounds having an affinity for hyperproliferating cells (such as atheromatous plaque cells), which when photoactivated, produce cytotoxic reaction products. The photoactivity of a ROPP, such as a porphyrin, may be reduced by metalating the porphyrin while the selective affinity of the metalized ROPP for hyperproliferating tissue remains substantially unchanged.
    Type: Grant
    Filed: July 27, 1995
    Date of Patent: December 28, 1999
    Assignee: PDT Pharmaceuticals, Inc.
    Inventors: Byron Robinson, Alan R. Morgan, Hugh L. Narciso, Jr.
  • Patent number: 5789586
    Abstract: A method for preparing functionalized derivatives of organic or inorganic compounds and tetrapyrrolic compounds in particular, all of which compounds have at least one sulfonic acid group, by first preparing a sulfonyl halide intermediate of the compound then reacting the intermediate with a second compound having a reactive hydroxyl or amine group to yield the desired sulfonylamide or sulfonic esters thereof. The method may be used to produce a variety of photosensitive compounds having different functionality. For example, sulfonamide or sulfonic ester reaction products of the tetrapyrrolic compounds or other photosensitive organic molecules may exhibit an enhanced ability to localize at a particular target site for phototherapy.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: August 4, 1998
    Assignee: PDT Pharmaceuticals, Inc.
    Inventor: Byron Robinson
  • Patent number: 5773609
    Abstract: A broad class of photosensitive compounds having enhanced in vivo target tissue selectivity and versatility in photodynamic therapy. Many furocoumarin compounds, such as psoralens, exhibit cytostatic activity when photoactivated but exhibit little in vivo specificity for selectively accumulating in any particular target tissue such as atheromatous plaques. Reactive Oxygen Producing Photosensitizers ("ROPPs") are photoactivatable compounds having an affinity for hyperproliferating cells (such as atheromatous plaque cells), which when photoactivated, produce cytotoxic reaction products. The photoactivity of a ROPP, such as a porphyrin, may be reduced by metalating the porphyrin while the selective affinity of the metalized ROPP for hyperproliferating tissue remains substantially unchanged.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: June 30, 1998
    Assignee: PDT Pharmaceuticals, Inc.
    Inventors: Byron Robinson, Alan R. Morgan, Hugh L. Narciso, Jr.