Patents by Inventor Leonard Wiebe

Leonard Wiebe 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: 20240051932
    Abstract: The present invention provides for a novel method for the synthesis of Vitamin E analogues and useful derivatives. The invention provides for novel methods for the derivatization of Vitamin E to generate molecules with improved bioavailability, radiolabelling capabilities for diagnostic use, and improved methods for the isolation or purification of Vitamin E from natural plant oil sources.
    Type: Application
    Filed: October 27, 2021
    Publication date: February 15, 2024
    Inventors: Leonard Wiebe, Eu Peter, John Yao
  • Patent number: 8969546
    Abstract: Provided in the following specification are precursors or synthons that are useful for the synthesis of various arabinose based chemical and radiochemical derivatives of nitroimidazole-containing azomycin arabinosides, such as radioiodinated 1-#-D-(5-deoxy-5-[I*]-iodoarabinofuranosyl)-2-nitroimidazole (*IAZA), and radiofluorinated 1-#-D-(5-deoxy-5-[18F]-iodoarabinofuranosyl)-2-nitroimidazole (18FAZA). Such compounds are useful in imaging, therapy, or radiotherapy. Further, various syntheses of said precursors/synthons and the incorporation of said precursors/synthons into kits is provided. The precursors/synthons provided herein allow for an improved and facile manufacturing process for nitroimidazole-containing azomycin arabinosides.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: March 3, 2015
    Assignees: The Governors of the University of Alberta, Alberta Health Services
    Inventors: Piyush Kumar, Leonard Wiebe, Alexander McEwan
  • Publication number: 20130211066
    Abstract: Provided in the following specification are precursors or synthons that are useful for the synthesis of various arabinose based chemical and radiochemical derivatives of nitroimidazole-containing azomycin arabinosides, such as radioiodinated 1-#-D-(5-deoxy-5-[I*]-iodoarabinofuranosyl)-2-nitroimidazole (*IAZA), and radiofluorinated 1-#-D-(5-deoxy-5-[18F]-iodoarabinofuranosyl)-2-nitroimidazole (18FAZA). Such compounds are useful in imaging, therapy, or radiotherapy. Further, various syntheses of said precursors/synthons and the incorporation of said precursors/synthons into kits is provided. The precursors/synthons provided herein allow for an improved and facile manufacturing process for nitroimidazole-containing azomycin arabinosides.
    Type: Application
    Filed: June 27, 2011
    Publication date: August 15, 2013
    Applicants: ALBERTA HEALTH SERVICES, THE GOVERNORS OF THE UNIVERSITY OF ALBERTA
    Inventors: Piyush Kumar, Leonard Wiebe, Alexander McEwan
  • Publication number: 20070021380
    Abstract: The present invention provides for a novel molecules useful for delivery of compounds to a mammal, more particularly for the intracellular delivery of nucleotides, nucleotide analogues or compounds with a heterocyclic base. Also provided for are novel therapeutic complexes comprising novel molecules complexed with nucleotide analogues or heterogeneous or homogenous oligomers comprised of nucleotide analogues.
    Type: Application
    Filed: July 24, 2006
    Publication date: January 25, 2007
    Inventors: Leonard Wiebe, James Diakur
  • Publication number: 20060270610
    Abstract: The present invention provides for compounds suitable for therapeutic treatment of hypoxic tissues, particularly for application in radiotherapy, chemosensitization, radiosensitization. The present invention further provides for compounds suitable for radioimaging of hypoxic cells.
    Type: Application
    Filed: March 29, 2006
    Publication date: November 30, 2006
    Inventors: Leonard Wiebe, Alexander McEwan, Piyush Kumar