Patents by Inventor Samana Roy Chowdhury

Samana Roy Chowdhury 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).

  • Conformal coating of polymer fibers on nonwoven substrates
    Patent number: 9091006
    Abstract: The present invention describes a novel process for the conformal coating of polymer fibers of nonwoven substrates. This process is based on modification of polymer fiber surfaces by controlling the degree of etching and oxidation to improve adhesion of initiators to the surface and to facilitate subsequent conformal polymer grafting. The modified fiber surfaces render new functionalities to the surface, such as increased hydrophilicity, attached ligands or changed surface energy. The invention includes the modified polymer fibers produced by the process described herein.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: July 28, 2015
    Assignees: Pathogen Removal and Diagnostic Technologies, Inc., North Carolina State University
    Inventors: Yong Zheng, Samana Roy Chowdhury, Patrick Vasconcelos Gurgel, Haiyan Liu, Ruben G. Carbonell