Patents by Inventor John F. Kadla

John F. Kadla 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).

  • Porous fibers from natural/synthetic polymer blends
    Patent number: 6765028
    Abstract: A method of preparing a porous fiber, the method including blending a natural polymer having a thermal stability with a synthetic polymer having a thermal stability, wherein the thermal stability of the natural polymer is different from the thermal stability of the synthetic polymer, and wherein the natural polymer and synthetic polymer from immiscible phases; extruding the blended polymers while heating at a predetermined heating rate to the fiber spinning temperature; spinning the fibers while maintaining the temperature; and heating the fibers at a heating rate that maintains the natural polymer in a fiber form and that removes the synthetic polymer, whereby a porous fiber is formed.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: July 20, 2004
    Assignee: North Carolina State University
    Inventors: John F. Kadla, Richard D. Gilbert, Richard A. Venditti, Satoshi Kubo
  • Porous fibers from natural/synthetic polymer blends
    Publication number: 20030212157
    Abstract: A method of preparing a porous fiber, the method including blending a natural polymer having a thermal stability with a synthetic polymer having a thermal stability, wherein the thermal stability of the natural polymer is different from the thermal stability of the synthetic polymer, and wherein the natural polymer and synthetic polymer from immiscible phases; extruding the blended polymers while heating at a predetermined heating rate to the fiber spinning temperature; spinning the fibers while maintaining the temperature; and heating the fibers at a heating rate that maintains the natural polymer in a fiber form and that removes the synthetic polymer, whereby a porous fiber is formed.
    Type: Application
    Filed: December 16, 2002
    Publication date: November 13, 2003
    Inventors: John F. Kadla, Richard D. Gilbert, Richard A. Venditti, Satoshi Kubo