Patents by Inventor Raman Chirakal

Raman Chirakal 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).

  • METHODS FOR PURIFYING RADIOLABELLED COMPOUNDS
    Publication number: 20090005545
    Abstract: One aspect of the present invention relates to a method of purifying radiolabelled compounds comprising a) loading onto a fluorous polymer a radiolabelled compound precursor comprising a fluoroalkyl tin moiety; b) reacting the radiolabelled compound precursor with a radiolabel delivering compound to give a radiolabelled compound, wherein the fluoroalkyl tin moiety is replaced by a radiolabel; and c) eluting the radiolabelled compound from the fluorous polymer.
    Type: Application
    Filed: February 25, 2008
    Publication date: January 1, 2009
    Inventors: John F. Valliant, Peter Dorff, Raman Chirakal
  • Methods for purifying radiolabelled compounds
    Patent number: 7335347
    Abstract: One aspect of the present invention relates to a method of purifying radiolabelled compounds comprising a) loading onto a fluorous polymer a radiolabelled compound precursor comprising a fluoroalkyl tin moiety; b) reacting the radiolabelled compound precursor with a radiolabel delivering compound to give a radiolabelled compound, wherein the fluoroalkyl tin moiety is replaced by a radiolabel; and c) eluting the radiolabelled compound from the fluorous polymer.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: February 26, 2008
    Assignee: McMaster University
    Inventors: John F. Valliant, Peter Dorff, Raman Chirakal
  • Methods for purifying radiolabelled compounds
    Publication number: 20040260073
    Abstract: One aspect of the present invention relates to a method of purifying radiolabelled compounds comprising a) loading onto a fluorous polymer a radiolabelled compound precursor comprising a fluoroalkyl tin moiety; b) reacting the radiolabelled compound precursor with a radiolabel delivering compound to give a radiolabelled compound, wherein the fluoroalkyl tin moiety is replaced by a radiolabel; and c) eluting the radiolabelled compound from the fluorous polymer.
    Type: Application
    Filed: October 16, 2003
    Publication date: December 23, 2004
    Inventors: John F. Valliant, Peter N. Dorff, Raman Chirakal