Patents by Inventor William R. Sibbach

William R. Sibbach 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).

  • Water vapor barrier laminate for packaging
    Patent number: 4912103
    Abstract: A transparent, flexible, heat sealable, water vapor barrier laminate, for use in forming a protective package, which is formed from three layers secured to each other by separate layers of laminating adhesive. One outer layer is a protective material consisting of a polyester film; the center layer is a barrier material consisting of a fluid compression rolled, monoaxially molecuarly oriented, high density polyethylene film; and the other outer layer is another protective material consisting of an ionomer film.
    Type: Grant
    Filed: May 5, 1988
    Date of Patent: March 27, 1990
    Assignee: Jefferson Smurfit Corporation
    Inventors: William R. Sibbach, Roger P. Conant