Patents by Inventor Allen T. Roudebush

Allen T. Roudebush 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).

  • Concrete module unit
    Patent number: 4112173
    Abstract: A casting sheet comprising medium to high density polyethylene provides low release resistance when used as a liner for casting concrete articles. The casting sheet may comprise polyethylene-coated paperboard having a polyethylene coating on both sides, and such sheet be employed, for example, as a separator for concrete wall panels cast on-site in a superposed manner for tilt-slab construction or for other concrete construction.
    Type: Grant
    Filed: February 15, 1977
    Date of Patent: September 5, 1978
    Assignee: Champion International Corporation
    Inventors: Allen T. Roudebush, Kenneth P. Thompson