Patents by Inventor Ali Afazali-Ardakani

Ali Afazali-Ardakani 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 separating carbon nanotubes by enhancing the density differential
    Patent number: 7727505
    Abstract: A method for separating carbon nanotubes comprises: providing a mixture of carbon nanotubes; introducing an organic molecule having an end group capable of being chelated by a metal ion to the mixture of carbon nanotubes to covalently bond the organic molecule to at least one of the mixture of carbon nanotubes; and introducing a metal salt to the mixture of carbon nanotubes to chelate the end group of the organic molecule with the metal ion of the metal salt; and centrifuging the mixture of carbon nanotubes to cause the separation of the carbon nanotubes based on a density differential of the carbon nanotubes.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: June 1, 2010
    Assignee: International Business Machines Corporation
    Inventors: Ali Afazali-Ardakani, James B. Hannon, Cherie R. Kagan, George S. Tulevski