Patents by Inventor Richard James Witmeyer

Richard James Witmeyer 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).

  • Publication number: 20020132547
    Abstract: A nonwoven fabric/film laminate material is particularly suited for use as a “housewrap”, or in like building construction applications. The laminate material comprises a spunbond polypropylene nonwoven fabric, and a breathable, polymeric film which is extrusion-coated onto the nonwoven fabric layer. Both the fabric layer and extrusion-coating can be formed in a cost-effective manner on conventionally available processing equipment. By appropriate selection of the nonwoven fabric layer and film properties, the present laminate material acts as an effective barrier to liquid water and air infiltration, while providing desirable permeability to water vapor.
    Type: Application
    Filed: January 12, 2001
    Publication date: September 19, 2002
    Inventors: Pierre D. Grondin, Paul Anthony Kamnikar, Valeria Griep Erdos, Richard James Witmeyer, Marlene Storzer, Charles Pearce