Patents by Inventor Erwin C. Shepard

Erwin C. Shepard 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).

  • Laminated resilient flexible barrier membranes
    Patent number: 6764629
    Abstract: The present invention relates to laminated membranes formed by multi-layer processing techniques including alternating layers of thermoplastic urethane and a copolymer of ethylene and vinyl alcohol. The membranes are characterized in that hydrogen bonds are formed between the layers of thermoplastic urethane and the copolymer of ethylene and vinyl alcohol. The membranes are characterized in that hydrogen bonds are formed between the layers of thermoplastic urethane and the copolymer of ethylene and vinyl alcohol.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: July 20, 2004
    Assignee: Nike, Inc.
    Inventors: Erwin C. Shepard, DeWayne R. Hartlerood, Paul H. Mitchell
  • Laminated resilient flexible barrier membranes
    Publication number: 20030235670
    Abstract: The present invention relates to laminated membranes formed by multi-layer processing techniques including alternating layers of thermoplastic urethane and a copolymer of ethylene and vinyl alcohol. The membranes are characterized in that hydrogen bonds are formed between the layers of thermoplastic urethane and the copolymer of ethylene and vinyl alcohol. The membranes are characterized in that hydrogen bonds are formed between the layers of thermoplastic urethane and the copolymer of ethylene and vinyl alcohol.
    Type: Application
    Filed: May 23, 2003
    Publication date: December 25, 2003
    Inventors: Erwin C. Shepard, DeWayne R. Hartlerood, Paul H. Mitchell
  • Laminated resilient flexible barrier membranes
    Patent number: 6620472
    Abstract: The present invention relates to laminated membranes formed by multi-layer processing techniques including alternating layers of thermoplastic urethane and a copolymer of ethylene and vinyl alcohol. The membranes are characterized in that hydrogen bonds are formed between the layers of thermoplastic urethane and the copolymer of ethylene and vinyl alcohol. The membranes are characterized in that hydrogen bonds are formed between the layers of thermoplastic urethane and the copolymer of ethylene and vinyl alcohol.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: September 16, 2003
    Assignees: Nike, Inc., Tetra Plastics
    Inventors: Erwin C. Shepard, DeWayne R. Hartlerood, Paul H. Mitchell