Patents by Inventor Petra I. Sansom

Petra I. Sansom 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: 7122572
    Abstract: The present invention provides calixpyrrole, calixpyridinopyrrole, and calixpyridine macrocycles, having 4, 5, 6, 7, or 8 heterocyclic rings, as well as syntheses, derivatives, conjugates, multimers, and solid supports thereof. Such macrocycles have proved to be effective and selective ion- and neutral molecule-binding agents forming supramolecular ensembles, and ion- and neutral molecule-separation agents. The macrocycles are fully meso-non-hydrogen-substituted porphyrinogens, a few molecules of which were previously known but not recognized as possessing anion- or molecule-binding properties. The binding mode is noncovalent, primarily that of hydrogen-bonding, thereby providing a new mode for liquid chromatography, that of Hydrogen Bonding Liquid Chromatography. Further useful applications of the macrocycles provided herein include environmental remediation by removal of undesired ions or neutral molecules, and removal of phosphate for kidney dialysis.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: October 17, 2006
    Assignee: Board of Regents, University of Texas System
    Inventors: Philip A. Gale, Jonathan L. Sessler, Vladimír A. Král, Andrei Andrievsky, Vincent Lynch, Petra I. Sansom, William E. Allen, Christopher T. Brown, Andreas Gebauer
  • Publication number: 20020026047
    Abstract: The present invention provides calixpyrrole, calixpyridinopyrrole, and calixpyridine macrocycles, having 4, 5, 6, 7, or 8 heterocyclic rings, as well as syntheses, derivatives. conjugates, multimers, and solid supports thereof. Such macrocycles have proved to be effective and selective ion- and neutral molecule-binding agents forming supramolecular ensembles, and ion- and neutral molecule-separation agents. The macrocycles are fully meso-non-hydrogen-substituted porphyrinogens, a few molecules of which were previously known but not recognized as possessing anion- or molecule-binding properties. The binding mode is noncovalent, primarily that of hydrogen-bonding, thereby providing a new mode for liquid chromatography, that of Hydrogen Bonding Liquid Chromatography. Further useful applications of the macrocycles provided herein include environmental remediation by removal of undesired ions or neutral molecules, and removal of phosphate for kidney dialysis.
    Type: Application
    Filed: April 20, 2001
    Publication date: February 28, 2002
    Inventors: Philip A. Gale, Jonathan L. Sessler, John W. Genge, Vladimir A. Kral, Andrei Andrievsky, Vincent Lynch, Petra I. Sansom, William E. Allen, Christopher T. Brown, Andreas Gebauer
  • Patent number: 6262257
    Abstract: The present invention provides calixpyrrole, calixpyridinopyrrole, and calixpyridine macrocycles, having 4, 5, 6, 7, or 8 heterocyclic rings, as well as syntheses, derivatives, conjugates, multimers, and solid supports thereof. Such macrocycles have proved to be effective and selective ion- and neutral molecule-binding agents forming supramolecular ensembles, and ion- and neutral molecule-separation agents. The macrocycles are fully meso-non-hydrogen-substituted porphyrinogens, a few molecules of which were previously known but not recognized as possessing anion- or molecule-binding properties. The binding mode is noncovalent, primarily that of hydrogen-bonding, thereby providing a new mode for liquid chromatography, that of Hydrogen Bonding Liquid Chromatography. Further useful applications of the macrocycles provided herein include environmental remediation by removal of undesired ions or neutral molecules, and removal of phosphate for kidney dialysis.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: July 17, 2001
    Assignee: Board of Regents, University of Texas System
    Inventors: Philip A. Gale, Jonathan L. Sessler, John W. Genge, Vladimír A. Král, Andrei Andrievsky, Vincent Lynch, Petra I. Sansom, William E. Allen, Christopher T. Brown, Andreas Gebauer
  • Patent number: 5633354
    Abstract: The invention is directed to a method of incorporating expanded porphyrins, and particularly of incorporating a sapphyrin or a texaphyrin, before, during, or after chemical synthesis of an oligomer to form an expanded porphyrin-oligonucleotide conjugate, and particularly a sapphyrin- or texaphyrin-oligonucleotide conjugate. This method includes reacting derivatized nucleotides and a sapphyrin or a texaphyrin in a desired order in an automated or manual DNA synthesizer having a solid support to form a sapphyrin- or a texaphyrin-oligonucleotide conjugate.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: May 27, 1997
    Assignees: Pharmacyclics, Inc., Board of Regents, The University of Texas
    Inventors: Darren Magda, Jonathan L. Sessler, Brent L. Iverson, Petra I. Sansom, Shaun P. Crofts
  • Patent number: 5607924
    Abstract: Methods of cleavage of a polymer of deoxyribonucleic acid using photosensitive texaphyrins are disclosed. A preferred method of use is the site-specific cleavage of a polymer of deoxyribonucleic acid and a preferred texaphyrin is a derivatized texaphyrin having binding specificity, in particular, a texaphyrin covalently coupled to a site-directing molecule, preferably an oligonucleotide.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 4, 1997
    Assignees: Pharmacyclics, Inc., Board of Trustees, Univ. of TX Sys.
    Inventors: Darren Magda, Jonathan L. Sessler, Brent L. Iverson, Petra I. Sansom, Meredith Wright
  • Patent number: 5565552
    Abstract: The invention is directed to a method of incorporating expanded porphyrins, and particularly of incorporating a sapphyrin or a texaphyrin, before, during, or after chemical synthesis of an oligomer to form an expanded porphyrin-oligonucleotide conjugate, and particularly a sapphyrin- or texaphyrin-oligonucleotide conjugate. This method includes reacting derivatized nucleotides and a sapphyrin or a texaphyrin in a desired order in an automated or manual DNA synthesizer having a solid support to form a sapphyrin- or a texaphyrin-oligonucleotide conjugate.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 15, 1996
    Assignees: Pharmacyclics, Inc., Board of Regents, Univ. of Texas Sys.
    Inventors: Darren Magda, Jonathan L. Sessler, Brent L. Iverson, Petra I. Sansom, Shaun P. Crofts