Patents by Inventor Nadarajah Vasanthan

Nadarajah Vasanthan 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).

  • High modulus polyamide fibers
    Patent number: 7666499
    Abstract: A process for preparing high initial modulus and high tensile strength polyamide fibers is described. The process comprises complexing the polyamide with a Lewis acid, dry-jet wet spinning the complexed fibers, drying the spun fibers for a period of time, drawing the fibers, and soaking the fibers in solvent to remove the Lewis acid. High molecular weight nylon 6,6 fibers prepared according to the described process show initial moduli of up to 30.1 GPa and tenacities of up to 2.5 GPa.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: February 23, 2010
    Assignee: North Carolina State University
    Inventors: Dongwook Jung, Richard Kotek, Alan E. Tonelli, Nadarajah Vasanthan
  • High modulus polyamide fibers
    Publication number: 20070210482
    Abstract: A process for preparing high initial modulus and high tensile strength polyamide fibers is described. The process comprises complexing the polyamide with a Lewis acid, dry-jet wet spinning the complexed fibers, drying the spun fibers for a period of time, drawing the fibers, and soaking the fibers in solvent to remove the. Lewis acid. High molecular weight nylon 6,6 fibers prepared according to the described process show initial moduli of up to 30.1 GPa and tenacities of up to 2.5 GPa.
    Type: Application
    Filed: September 27, 2006
    Publication date: September 13, 2007
    Inventors: Dongwook Jung, Richard Kotek, Alan Tonelli, Nadarajah Vasanthan