Patents by Inventor Steven G. Plovan

Steven G. Plovan 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).

  • Air permeable waterproof products having fabric-like aesthetic properties and methods for making the same
    Patent number: 3932682
    Abstract: Novel products are described which possess a capability of transmitting air and moisture vapor, are waterproof, and have fabric-like aesthetic properties. These products may have applications such as rainwear material, tent material, garment liners, and shoe liners. These products may be made by spray spinning filamentary polymer material onto open-celled polymer film, or onto non-cellular elastic polymer film with the additional steps of stretching and heat setting creating a stable open-celled structure in the film portion of the product. Subsequent calendering of the product may further improve its fabric-like aesthetic properties.
    Type: Grant
    Filed: April 26, 1972
    Date of Patent: January 13, 1976
    Assignee: Celanese Corporation
    Inventors: John T. Loft, Steven G. Plovan, Clifford M. Vogt