Patents by Inventor Ravindra K. Pandey

Ravindra K. Pandey 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: 20130237688
    Abstract: A compound that is a conjugate of an antagonist to an integrin expressed by a tumor cell and at least one of a tumor avid tetrapyrollic photosensitizer, a fluorescent dye, and a radioisotope labeled moiety wherein the radioisotope is 11C, 18F, 64Cu, 124I, 99Tc, 111In or GdIII and its method of use for diagnosing, imaging and/or treating hyperproliferative tissue such as tumors. Preferably the photosensitizer is a tumor avid tetrapyrollic photosensitizer, e.g. a porphyrin, chlorin or bacteriochlorin, e.g. pheophorbides and pyropheophorbides. Such conjugates have extreme tumor avidity and can be used to inhibit or completely destroy the tumor by light absorption. The integrin is usually ?v?3, ?5?1, ?v?5, ?4?1, or ?2?1. Preferably, the antagonist is an RGD peptide or another antagonist that may be synthetic such as a 4-{2-(3,4,5,6-tetra-hydropyrimidin-2-ylamino)ethyloxy}-benzoyl]amino-2-(S)-amino-ethyl-sulfonylamino group.
    Type: Application
    Filed: April 15, 2013
    Publication date: September 12, 2013
    Applicants: The Research Foundation of State University of New York, Health Research, Inc.
    Inventors: Ravindra K. Pandey, Suresh Pandey, Lalit Goswami, Allan Oseroff, Shipra Dubey, Munawwar Sajjad
  • Publication number: 20130202525
    Abstract: A composition comprising PAA nanoparticles containing a post loaded tetrapyrollic photosensitizer and a postloaded imaging agent and methods for making and using same.
    Type: Application
    Filed: August 3, 2012
    Publication date: August 8, 2013
    Applicants: Health Research, Inc., Regents of the University of Michigan, The Research Foundation of State University of New York
    Inventors: Ravindra K. Pandey, Raoul Kopelman, Anurag Gupta, Munawwar Sajjad
  • Publication number: 20130202526
    Abstract: PAA nanoparticles containing at least one tetrapyrrolic photosensitizer and at least one PET imaging agent.
    Type: Application
    Filed: August 3, 2012
    Publication date: August 8, 2013
    Applicants: HEALTH RESEARCH, INC., REGENTS OF THE UNIVERSITY OF MICHIGAN, THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK
    Inventors: Ravindra K. Pandey, Raoul Kopelman, Anurag Gupta, Munawwar Sajjad
  • Publication number: 20130195758
    Abstract: A PAA nanoparticle containing a covalently linked fluorescent dye and a post-loaded tetrapyrrolic photosensitizer.
    Type: Application
    Filed: August 3, 2012
    Publication date: August 1, 2013
    Applicants: HEALTH RESEARCH, INC., Regents of the University of Michigan, The Research Foundation of State University of New York
    Inventors: Ravindra K. Pandey, Raoul Kopelman, Anurag Gupta, Munawwar Sajjad
  • Patent number: 8336349
    Abstract: A method of manufacturing a lock assembly for enabling use of a key-in-knob lock cylinder assembly in different types of lock assemblies. The method includes providing a key-in-knob lock assembly having a key-in-knob housing and a plug rotatably engaged within the key-in-knob housing, providing an interchangeable core lock assembly having an interchangeable core housing, and inserting the key-in-knob housing into the interchangeable core housing such that the key-in-knob housing is universally exchangeable between the key-in-knob lock assembly and the interchangeable core lock assembly.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: December 25, 2012
    Assignee: Schlage Lock Company
    Inventors: Lohithaswa Thimmappa, Evan E. Evans, Vinod Kumar Rajan, Aravinda Mahabaleshwara, Ravindra K. Pandey, Roger Kanaan
  • Patent number: 8198432
    Abstract: This invention describes a first report on the synthesis of certain 124I-labelled photosensitizers related to chlorines and bacteriochlorins with long wavelength absorption in the range of 660-800 nm. In preliminary studies, these compounds show a great potential for tumor detection by positron emission tomography (PET) and treatment by photodynamic therapy (PDT). The development of tumor imaging or improved photodynamic therapy agent(s) itself represent an important step, but a dual function agent (PET imaging and PDT) provides the potential for diagnostic body scan followed by targeted therapy.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: June 12, 2012
    Assignees: Health Research, Inc., The Research Foundation of SUNY
    Inventors: Ravindra K. Pandey, Munawwar Sajjad, Suresh Pandey, Amy Gryshuk, Allan Oseroff, Stephanie Pincus, legal representative, Hani A. Nabi
  • Publication number: 20120097538
    Abstract: A compound in the form of a metallized tetrpyrollic photosensizer linked to a fluorescent dye where the photosensitizer (PS), is linked by a structure that does not have detrimental radiation emmitance or absorbing characteristics, to a fluorophore, usually a cyanine dye (CD). The photosensitizer in accordance the invention is a metallized analog of porphyrins, chlorins, purpurinimides, bacterio pupurinimides, phthalocyanines, expanded porphyrins, benzoporphyrin derivatives and purpurins. The fluorophore is usually a cyanine dye with varaible substituents. And, A method for determining effectiveness of PDT by comparing proportion of STAT-3 monomer with crosslinked STAT-3 dimer after PDT where the relative proportion of STAT-3 monomer to crosslinked STAT-3 directly correlates to efficacy of the PDT.
    Type: Application
    Filed: June 24, 2011
    Publication date: April 26, 2012
    Applicant: Health Research, Inc.
    Inventors: Ravindra K. Pandey, Heinz Baumann, Yihui Chen, Penny Joshi, Nayan Patel
  • Patent number: 8133473
    Abstract: A compound comprising a chemical combination of a photodynamic tetra-pyrrolic compound with a plurality of radionuclide element atoms such that the compound may be used to enhance MR imaging and also be used as a photodynamic compound for use in photodynamic therapy to treat hyperproliferative tissue. The preferred compounds have the structural formula: where R1, R2, R2a R3, R3a R4, R5, R5a R6, R7, R7a, and R8 cumulatively contain at least two functional groups that will complex or combine with an MR imaging enhancing element or ion. The compound is intended to include such complexes and combinations and includes the use of such compounds for MR imaging and photodynamic therapy treatment of tumors and other hyperproliferative tissue.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: March 13, 2012
    Assignee: Health Research, Inc.
    Inventors: Ravindra K. Pandey, Zachary Grossman, Peter Kanter, Thomas J. Dougherty
  • Publication number: 20110288234
    Abstract: A nanoparticle including a polysiloxane base having an exterior surface and having a photosensitizer at least partly exposed at its exterior surface, said photosensitizer being secured to the exterior surface by loading the photosensitizer onto the surface after formation of the polysiloxane base of the nanoparticle. The nanoparticle may have tumor targeting moieties and may be post loaded with cyanine dye. The nanoparticle preferably includes post loaded moieties providing at least two of tumor specificity, photodynamic properties and imaging capabilities and the photosensitizer is tagged with a radioisotope. A method for preparation of the nanoparticle is also provided.
    Type: Application
    Filed: February 19, 2009
    Publication date: November 24, 2011
    Applicants: The Research Foundation on State University of NY, Health Research, Inc.
    Inventors: Ravindra K. Pandey, Lalit N. Goswami, Allan Oseroff, Stephanie Pincus, Janet Morgan, Paras N. Prasad, Earl J. Bergey
  • Publication number: 20110264027
    Abstract: Tetrapyrollic photosensitizers and imaging agent compounds having A, B, C, and D rings and having a reduced B ring and an oxidized D ring. The compounds preferably have a purity of at least 95 percent and preferably have a fused system connected at an unsaturated carbon atom of the C ring nearest the D ring and at the unsaturated carbon atom between the C and D rings. The invention also includes a method of making the compounds at over 95 percent yield by starting with a B and D ring oxidized tetrapyrollic compound and dissolving it in a halogenated hydrocarbon solvent and treating it with sufficient nitroalkane solution of FeCl3.6H2O to oxidize the D ring and separating the resulting organic layer and drying.
    Type: Application
    Filed: February 19, 2009
    Publication date: October 27, 2011
    Applicant: Health Research, Inc.
    Inventors: Ravindra K. Pandey, Chao Liu, Mahabeer Dobhal, William Potter, Janet Morgan, Allan Oseroff, Stephanie Pincus
  • Publication number: 20110223102
    Abstract: A compound that is a conjugate of an antagonist to an integrin expressed by a tumor cell and at least one of a tumor avid tetrapyrollic photosensitizer, a fluorescent dye, and a radioisotope labeled moiety wherein the radioisotope is 11C, 18F, 64Cu, 124I, 99Tc, 111In or GdIII and its method of use for diagnosing, imaging and/or treating hyperproliferative tissue such as tumors. Preferably the photosensitizer is a tumor avid tetrapyrollic photosensitizer, e.g. a porphyrin, chlorin or bacteriochlorin, e.g. pheophorbides and pyropheophorbides. Such conjugates have extreme tumor avidity and can be used to inhibit or completely destroy the tumor by light absoption. The integrin is usually ?v?3, ?5?1, ?v?5, ?4?1, or ?2?1. Preferably, the antagonist is an RGD peptide or another antagonist that may be synthetic such as a 4-{2-(3,4,5,6-tetra-hydropyrimidin-2-ylamino)ethyloxy}-benzoyl]amino-2-(S)-amino-ethyl-sulfonylamino group.
    Type: Application
    Filed: September 11, 2008
    Publication date: September 15, 2011
    Applicants: HEALTH RESEARCH, INC., THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK
    Inventors: Ravindra K. Pandey, Suresh Pandey, Lalit Goswami, Allan Oseroff, Shipra Dubey, Munawwar Sajjad, Stephanie Pincus
  • Patent number: 7947729
    Abstract: A compound having preferential localization in tumor tissue relative to normal tissue, a preferential electromagnetic absorption at a wavelength between about 660 and 900 nm, and a fluorescence at a wavelength shifted from the preferential absorption by at least +30 nm and preferably at least +50 nm. The compound further preferably destroys tumor tissue in which it is absorbed when exposed to light at its preferential absorption wavelength. In a preferred embodiment of the invention, the compound is a conjugate of a tumor avid tetrapyrrole compound with a fluorescent dye, and more preferably the fluorescent dye is an indocyanine dye such as indocyanine green. The tumor avid tetrapyrrole compound is preferably a porphyrin derivative selected from the group consisting of chlorins, bacteriochlorins, purpurins and derivatives thereof.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: May 24, 2011
    Assignee: Health Research, Inc.
    Inventors: Ravindra K. Pandey, Yihui Chen, William Potter, Allan Oseroff
  • Publication number: 20110091390
    Abstract: A tetrapyrollic photosensitizer compound having at least one pendant —CH2CH2CON(CH2CON(CH2COOH)2)2 or —N(CH2COOH)2 group or esters thereof said tetrapyrollic compound being a chlorin, bacteriochlorin, porphyrin, pyropheophorbide, purpurinimide, or bacteriopurpurinimide. Desirably the compound has the formula: or a pharmaceutically acceptable derivative thereof, wherein R1—R8 and R10 are various substituents and R9 is substituted or unsubstituted —CH2CH2CON(CH2CON(CH2COOH)2)2; or —N(CH2COOH)2. The invention also includes a method of treatment by photodynamic therapy by treatment with light after injecting the compound and a method of imaging by fluorescence after injection of the compound.
    Type: Application
    Filed: October 26, 2010
    Publication date: April 21, 2011
    Applicant: Health Research, Inc.
    Inventors: Ravindra K. Pandey, Amy Gryshuk, Lalit Goswami, William Potter, Allan Oseroff
  • Publication number: 20110091373
    Abstract: A composition comprising PAA nanoparticles containing a post loaded tetrapyrollic photosensitizer and an imaging agent and methods for making and using same.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 21, 2011
    Applicants: Health Research, Inc., The Research Foundation of State University of New York, Regents of the University of Michigan
    Inventors: Ravindra K. Pandey, Raoul Kopelman, Anurag Gupta, Munawwar Sajjad
  • Patent number: 7897140
    Abstract: Novel tetrapyrollic water soluble photosensitizing and imaging compounds and the methods of treating and imaging hyperproliferative tissue, e.g. tumors and hypervacularized tissue such as found in macular degeneration. Broadly, the compounds are tetrapyrollic photosensitizer compounds where the tetrapyrollic compound is a chlorin, bacteriochlorin, porphyrin, pyropheophorbide, purpurinimide, or bacteriopurpurinimide having 3 to 6 —CH2CONHphenylCH2CH(N(CH2COOH)2))(CH2N(CH2COOH)(CH2CH2N(CH2COOH)2)) groups or esters thereof or complexes thereof with gadolinium(III).
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: March 1, 2011
    Assignee: Health Research, Inc.
    Inventors: Ravindra K. Pandey, Lalit Goswami, Joseph Spernyak, Peter Kanter, Richard Mazurchuk
  • Patent number: 7820143
    Abstract: A tetrapyrollic photosensitizer compound having at least one pendant —CH2CH2CON(CH2CON(CH2COOH)2)2 or —N(CH2COOH)2 group or esters thereof said tetrapyrollic compound being a chlorin, bacteriochlorin, porphyrin, pyropheophorbide, purpurinimide, or bacteriopurpurinimide. Desirably the compound has the formula: or a pharmaceutically acceptable derivative thereof, wherein R1-R8 and R10 are various substituents and R9 is substituted or unsubstituted —CH2CH2CON(CH2CON(CH2COOH)2)2; or —N(CH2COOH)2. The invention also includes a method of treatment by photodynamic therapy by treatment with light after injecting the compound and a method of imaging by fluorescence after injection of the compound.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: October 26, 2010
    Assignee: Health Research, Inc.
    Inventors: Ravindra K. Pandey, Amy Gryshuk, Lalit Goswami, William Potter, Allan Oseroff
  • Publication number: 20100256136
    Abstract: A method for treating hyperproliferative tissue in a mammal which tissue expresses ABCG2 including the steps of: a) systemically introducing from about 100 to about 1000 mg/kg of body weight of a tyrosine kinase inhibiting compound into the mammal; b) within from about 0.5 to about 24 hours after the introducing in step a) systemically introducing from about 0.05 to about 0.5 ?mol per kilogram of body weight of a tumor avid photosensitizing compound, that acts as a substrate for ABC family transport protein, ABCG2 and that has a preferential light absorbance frequency; and c) exposing the hyperproliferative tissue to light at a fluence of from about 50 to about 150 J/cm2 delivered at a rate of from about 5 to about 25 mW/cm2 at the light absorbance frequency.
    Type: Application
    Filed: June 29, 2007
    Publication date: October 7, 2010
    Inventors: Ravindra K. Pandey, Allan Oseroff, Stephanie Pincus, Janet Morgan, Xiang Zheng, Weiguo Liu
  • Publication number: 20100184970
    Abstract: This invention describes a first report on the synthesis of certain 124I-labelled photosensitizers related to chlorines and bacteriochlorins with long wavelength absorption in the range of 660-800 nm. In preliminary studies, these compounds show a great potential for tumor detection by positron emission tomography (PET) and treatment by photodynamic therapy (PDT). The development of tumor imaging or improved photodynamic therapy agent(s) itself represent an important step, but a dual function agent (PET imaging and PDT) provides the potential for diagnostic body scan followed by targeted therapy.
    Type: Application
    Filed: August 5, 2009
    Publication date: July 22, 2010
    Applicants: Health Research, Inc., The Research Foundation of State University of New York
    Inventors: Ravindra K. Pandey, Munawwar Sajjad, Suresh Pandey, Amy Gryshuk, Allan Oseroff, Hani A. Nabi, Stephanie Pincus
  • Publication number: 20100144820
    Abstract: A method for treating cancer and other hyperproliferative tissues in humans that can be exposed to light comprising injection of HPPH at the equivalent to a dose of 0.05 to 0.11 mg/kg of body weight 24 hours post injection and exposing the tumor or other hyperproliferative tissue to 665±10 nm of light at 50 to 200 Joules/cm2.
    Type: Application
    Filed: September 27, 2007
    Publication date: June 10, 2010
    Applicant: Health Research, Inc.
    Inventors: Ravindra K. Pandey, Thomas J. Dougherty, William R. Potter
  • Patent number: RE43274
    Abstract: Provided herein are compounds for detection, diagnosis and treatment of target tissues or target compositions, including hyperproliferative tissues such as tumors, using photodynamic methods. In particular, photosensitizer compounds that collect in hyperproliferative tissue are provided. In another embodiment, compounds that absorb light at a wavelength of from about 700 to about 850 nm are provided. In a further embodiment, compounds that are detectable by magnetic resonance imaging are provided.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: March 27, 2012
    Assignee: Health Research, Inc.
    Inventors: Ravindra K. Pandey, William R. Potter, Thomas J. Dougherty