Patents by Inventor D. James Porterfield

D. James Porterfield 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).

  • Nonwoven material and method of manufacture therefor
    Publication number: 20020065013
    Abstract: A flexible, recyclable and sewable nonwoven textile formed from first fibers having a high temperature polyester core and a low temperature thermoplastic sheath, and second thermoplastic fibers formed from a high temperature polyester. The nonwoven textile is formed by blending the first thermoplastic staple with the second thermoplastic staple, carding the blend into a web, cross lapping the fibers of the web into a mat, needling the mat, heating the mat to a temperature above the melt temperature of the low temperature thermoplastic thereby forming unions between the fibers.
    Type: Application
    Filed: November 30, 2000
    Publication date: May 30, 2002
    Inventors: D. James Porterfield, Don A. Lovinggood