Patents by Inventor Richard B. Dorshow

Richard B. Dorshow 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: 6663847
    Abstract: Highly hydrophilic indole and benzoindole derivatives that absorb and fluoresce in the visible region of light are disclosed. These compounds are useful for physiological and organ function monitoring. Particularly, the molecules of the invention are useful for optical diagnosis of renal and cardiac diseases and for estimation of blood volume in vivo.
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: December 16, 2003
    Assignee: Mallinckrodt Inc.
    Inventors: Samuel Achilefu, Hermo N. Jimenez, Raghavan Rajagopalan, Richard B. Dorshow, Joseph E. Bugaj
  • Patent number: 6656451
    Abstract: Highly hydrophilic indole and benzoindole derivatives that absorb and fluoresce in the visible region of light are disclosed. These compounds are useful for physiological and organ function monitoring. Particularly, the molecules of the invention are useful for optical diagnosis of renal and cardiac diseases and for estimation of blood volume in vivo.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: December 2, 2003
    Assignee: Mallinckrodt, Inc.
    Inventors: Samuel Achilefu, Raghavan Rajagopalan, Richard B. Dorshow, Joseph E. Bugaj
  • Patent number: 6641798
    Abstract: Cyanine dye bioconjugates useful for diagnostic imaging and therapy are disclosed. The conjugates include several cyanine dyes with a variety of bis- and tetrakis (carboxylic acid) homologes. The compounds may be conjugated to bioactive peptides, carbohydrates, hormones, drugs, or other bioactive agents. The small size of the compounds allows more favorable delivery to tumor cells as compared to larger molecular weight imaging agents. The various dyes are useful over the range of 350 to 1,300 nm, the exact range being dependent upon the particular dye. The use of dimethylsulfoxide helps to maintain the fluorescence of the compounds. The inventive compounds are useful for diagnostic imaging and therapy, in endoscopic applications for the detection of tumors and other abnormalities, for localized therapy, for photoacoustic tumor imaging, detection and therapy, and for sonofluorescence tumor imaging, detection and therapy.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: November 4, 2003
    Assignee: Mallinckrodt Inc.
    Inventors: Samuel I. Achilefu, Raghavan Rajagopalan, Richard B. Dorshow, Joseph E. Bugaj
  • Publication number: 20030202941
    Abstract: Highly hydrophilic indole and benzoindole derivatives that absorb and fluoresce in the visible region of light are disclosed. These compounds are useful for physiological and organ function monitoring. Particularly, the molecules of the invention are useful for optical diagnosis of renal and cardiac diseases and for estimation of blood volume in vivo.
    Type: Application
    Filed: May 13, 2003
    Publication date: October 30, 2003
    Applicant: MALLINCKRODT INC.
    Inventors: Samuel Achilefu, Hermo N. Jimenez, Raghavan Rajagopalan, Richard B. Dorshow, Joseph E. Bugai
  • Publication number: 20030185756
    Abstract: Novel tumor specific phototherapeutic and photodiagnostic agents are disclosed. The compounds consist of a carbocyanine dye for visualization, photosensitizer for photodynamic treatment, and tumor receptor-avid peptide for site-specific delivery of the probe and phototoxic agent to diseased tissues A combination of these elements takes full advantage of the unique and efficient properties of each component for an effective patient care management.
    Type: Application
    Filed: October 17, 2001
    Publication date: October 2, 2003
    Applicant: MALLINCKRODT INC
    Inventors: Samuel Achilefu, Richard B. Dorshow, Raghavan Rajagopalan, Joseph E. Bugaj
  • Publication number: 20030165432
    Abstract: Dye-peptide conjugates useful for diagnostic imaging and therapy are disclosed. The dye-peptide conjugates include several cyanine dyes with a variety of bis- and tetrakis(carboxylic acid) homologues. The small size of the compounds allows more favorable delivery to tumor cells as compared to larger molecular weight imaging agents. The various dyes are useful over the range of 350-1300 nm, the exact range being dependent upon the particular dye. Use of dimethylsulfoxide helps to maintain the fluorescence of the compounds. The molecules of the invention are useful for diagnostic imaging and therapy, in endoscopic applications for the detection of tumors and other abnormalities and for localized therapy, for photoacoustic tumor imaging, detection and therapy, and for sonofluorescence tumor imaging, detection and therapy.
    Type: Application
    Filed: January 9, 2001
    Publication date: September 4, 2003
    Inventors: Samuel I. Achilefu, Raghavan Rajagopalan, Richard B. Dorshow, Joseph E. Bugaj
  • Publication number: 20030158127
    Abstract: The present invention discloses novel sulfenate derivatives and their bioconjugates for phototherapy of tumors and other lesions. The sulfenates of the present invention are designed to absorb low-energy ultraviolet, visible, or near-infrared (NIR) region of the electromagnetic spectrum. The phototherapeutic effect is caused by direct interaction of free radicals, the reactive intermediate produced upon photofragmentation of the sulfenate moiety, with the tissue of interest.
    Type: Application
    Filed: July 3, 2001
    Publication date: August 21, 2003
    Applicant: MALLINCKRODT INC.
    Inventors: Raghavan Rajagopalan, Gary L. Cantrell, Samuel I. Achilefu, Joseph E. Bugaj, Richard B. Dorshow
  • Publication number: 20030152577
    Abstract: Novel tumor specific phototherapeutic and photodiagnostic agents are disclosed. The compounds consist of a carbocyanine dye for visualization, photosensitizer for photodynamic treatment, and tumor receptor-avid peptide for site-specific delivery of the probe and phototoxic agent to diseased tissues. A combination of these elements takes full advantage of the unique and efficient properties of each component for an effective patient care management.
    Type: Application
    Filed: February 7, 2002
    Publication date: August 14, 2003
    Applicant: MALLINCKRODT INC.
    Inventors: Samuel Achilefu, Raghavan Rajagopalan, Richard B. Dorshow, Joseph E. Bugaj
  • Publication number: 20030143159
    Abstract: Cyanine dye bioconjugates useful for diagnostic imaging and therapy are disclosed. The conjugates include several cyanine dyes with a variety of bis- and tetrakis (carboxylic acid) homologues. The compounds may be conjugated to bioactive peptides, carbohydrates, hormones, drugs, or other bioactive agents. The small size of the compounds allows more favorable delivery to tumor cells as compared to larger molecular weight imaging agents. The various dyes are useful over the range of 350-1300 nm, the exact range being dependent upon the particular dye. Use of dimethylsulfoxide helps to maintain the fluorescence of the compounds. The inventive compounds are useful for diagnostic imaging and therapy, in endoscopic applications for the detection of tumors and other abnormalities, for localized therapy, for photoacoustic tumor imaging, detection and therapy, and for sonofluorescence tumor imaging, detection and therapy.
    Type: Application
    Filed: January 9, 2001
    Publication date: July 31, 2003
    Applicant: Mallinckrodt Inc.
    Inventors: Samuel I. Achilefu, Raghavan Rajagopalan, Richard B. Dorshow, Joseph E. Bugaj
  • Publication number: 20030105299
    Abstract: Novel tumor specific phototherapeutic and photodiagnostic agents are disclosed. The compounds consist of a carbocyanine dye for visualization, photosensitizer for photodynamic treatment, and tumor receptor-avid peptide for site-specific delivery of the probe and phototoxic agent to diseased tissues. A combination of these elements takes full advantage of the unique and efficient properties of each component for an effective patient care management.
    Type: Application
    Filed: October 17, 2001
    Publication date: June 5, 2003
    Applicant: MALLINCKRODT INC.
    Inventors: Samuel Achilefu, Raghavan Rajagopalan, Richard B. Dorshow, Joseph E. Bugaj
  • Publication number: 20030105300
    Abstract: Novel tumor specific phototherapeutic and photodiagnostic agents are disclosed. The compounds consist of a carbocyanine dye for visualization, photosensitizer for photodynamic treatment, and tumor receptor-avid peptide for site-specific delivery of the probe and phototoxic agent to diseased tissues. A combination of these elements takes full advantage of the unique and efficient properties of each component for an effective patient care management.
    Type: Application
    Filed: October 17, 2001
    Publication date: June 5, 2003
    Applicant: MALLINCKRODT INC.
    Inventors: Samuel Achilefu, Joseph E. Bugaj, Richard B. Dorshow, Raghavan Rajagopalan
  • Publication number: 20030072763
    Abstract: Novel azo compounds and their bioconjugates for phototherapy and/or photodiagnosis of tumors and other lesions. The azo derivatives of the present invention are designed to absorb at the low-energy ultraviolet, visible, or near-infrared (NIR) region of the electromagnetic spectrum. The phototherapeutic effect is caused by direct interaction of free radicals, the reactive intermediate produced upon photoexcitation of the azo compound, with the tissue of interest.
    Type: Application
    Filed: October 15, 2002
    Publication date: April 17, 2003
    Applicant: Mallinckrodt Inc.
    Inventors: Raghavan Rajagopalan, Gary L. Cantrell, Joseph E. Bugaj, Samuel I. Achilefu, Richard B. Dorshow
  • Publication number: 20030036538
    Abstract: The present invention discloses dye-sulfenate derivatives and their bioconjugates for dual phototherapy of tumors and other lesions. The compounds of the present invention may contain either a mixture of Type 1 and Type 2 agents or a single entity that integrates both units in the same molecules. The compounds are designed to produce both Type 1 and Type 2 phototherapeutic effect at once using dual wavelength light source that will produce singlet oxygen and free radicals at the lesion of interest.
    Type: Application
    Filed: July 3, 2001
    Publication date: February 20, 2003
    Applicant: MALLINCKRODT INC.
    Inventors: Raghavan Rajagopalan, Samuel I. Achilefu, Joseph E. Bugaj, Richard B. Dorshow
  • Publication number: 20030031627
    Abstract: Compositions and methods using internal image antibodies for photodiagnosis and/or phototherapy. The internal image antibodies are conjugated with a photoactive molecule such as a dye or photosensitizer, to target specific regions, such as biological receptors. The photoactive molecules are then activated for diagnosis or therapy. Advantageously, the internal image antibody is specific for a biological receptor, but does not require isolation of the receptor to prepare the antibody, and provides the desired specificity and selectivity for targeted diagnosis for therapy.
    Type: Application
    Filed: July 31, 2001
    Publication date: February 13, 2003
    Applicant: MALLINCKRODT INC.
    Inventors: Raghavan Rajagopalan, Joseph E. Bugaj, Samuel I. Achilefu, Richard B. Dorshow
  • Publication number: 20030017164
    Abstract: The present invention discloses dye-azide derivatives and their bioconjugates for dual phototherapy of tumors and other lesions. The compounds of the present invention may contain either a mixture of Type 1 and Type 2 agents or a single entity that integrates both units in the same molecules. The compounds are designed to produce both Type 1 and Type 2 phototherapeutic effect at once using dual wavelength light source that will produce singlet oxygen and nitrene at the lesion of interest.
    Type: Application
    Filed: July 3, 2001
    Publication date: January 23, 2003
    Applicant: MALLINCKRODT INC.
    Inventors: Raghavan Rajagopalan, Samuel I. Achilefu, Joseph E. Bugaj, Richard B. Dorshow
  • Patent number: 6485704
    Abstract: Novel azo compounds and their bioconjugates for phototherapy and/or photodiagnosis of tumors and other lesions. The azo derivatives of the present invention are designed to absorb at the low-energy ultraviolet, visible, or near-infrared (NIR) region of the electromagnetic spectrum. The phototherapeutic effect is caused by direct interaction of free radicals, the reactive intermediate produced upon photoexcitation of the azo compound, with the tissue of interest.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: November 26, 2002
    Assignee: Mallinckrodt Inc.
    Inventors: Raghavan Rajagopalan, Gary L. Cantrell, Joseph E. Bugaj, Samuel I. Achilefu, Richard B. Dorshow
  • Publication number: 20020169107
    Abstract: The present invention discloses novel aromatic azide derivatives and their bioconjugates for phototherapy of tumors and other lesions. The organic azides of the present invention are designed to absorb low-energy ultraviolet, visible, or near-infrared (NIR) region of the electromagnetic spectrum. The phototherapeutic effect is caused by direct interaction of nitrene, the reactive intermediate produced upon photoexcitation of the aromatic azide, with the tissue of interest. The compounds of the present invention are administered to a patient, allowed to accumulate at the site of the tumor or other lesion, and are exposed to light in order to perform a phototherapeutic procedure.
    Type: Application
    Filed: January 19, 2001
    Publication date: November 14, 2002
    Applicant: Mallinckrodt Inc.
    Inventors: Raghavan Rajagopalan, Gary Cantrell, Samuel I. Achilefu, Joseph E. Bugaj, Richard B. Dorshow
  • Publication number: 20020164287
    Abstract: Novel azo compounds and their bioconjugates for phototherapy and/or photodiagnosis of tumors and other lesions. The azo derivatives of the present invention are designed to absorb at the low-energy ultraviolet, visible, or near-infrared (NIR) region of the electromagnetic spectrum. The phototherapeutic effect is caused by direct interaction of free radicals, the reactive intermediate produced upon photoexcitation of the azo compound, with the tissue of interest.
    Type: Application
    Filed: May 4, 2001
    Publication date: November 7, 2002
    Applicant: MALLINCKRODT INC.
    Inventors: Raghavan Rajagopalan, Gary L. Cantrell, Joseph E. Bugaj, Samuel I. Achilefu, Richard B. Dorshow
  • Publication number: 20020156117
    Abstract: Cyanine dye bioconjugates useful for diagnostic imaging and therapy are disclosed. The conjugates include several cyanine dyes with a variety of bis- and tetrakis (carboxylic acid) homologes. The compounds may be conjugated to bioactive peptides, carbohydrates, hormones, drugs, or other bioactive agents. The small size of the compounds allows more favorable delivery to tumor cells as compared to larger molecular weight imaging agents. The various dyes are useful over the range of 350 to 1,300 nm, the exact range being dependent upon the particular dye. The use of dimethylsulfoxide helps to maintain the fluorescence of the compounds. The inventive compounds are useful for diagnostic imaging and therapy, in endoscopic applications for the detection of tumors and other abnormalities, for localized therapy, for photoacoustic tumor imaging, detection and therapy, and for sonofluorescence tumor imaging, detection and therapy.
    Type: Application
    Filed: May 23, 2001
    Publication date: October 24, 2002
    Applicant: MALLINCKRODT INC.
    Inventors: Samuel I. Achilefu, Raghavan Rajagopalan, Richard B. Dorshow, Joseph E. Bugaj
  • Patent number: 6395257
    Abstract: The sensitivity and specificity of the optical modality can be enhanced by the use of highly absorbing dyes as contrast agents. Novel cyanine dyes that absorb and emit light in the near infrared region of electromagnetic spectrum are disclosed. These dyes are useful for imaging, diagnosis and therapy of various diseased states. Particularly, the molecules of the invention are useful for optical diagnostic imaging and therapy, in endoscopic applications for the detection of tumors and other abnormalities, for localized therapy, for photoacoustic tumor imaging, detection and therapy, and for sonofluorescence tumor imaging, detection and therapy.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: May 28, 2002
    Assignee: Mallinckrodt Inc.
    Inventors: Samuel Achilefu, Raghavan Rajagopalan, Richard B. Dorshow, Joseph E. Bugaj