Patents by Inventor George John Hannes

George John Hannes 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).

  • Fibrous mat especially suitable for roofing products
    Patent number: 4112174
    Abstract: An economical and uniform fibrous glass mat displaying improved tear strength and a wet forming process of making such a mat is disclosed herein. The mat, which is especially suitable as a carrier material in the manufacture of asphalt shingles or other such roofing products, includes a web of base fibers comprising individual monofilament glass fibers and reinforcement fibers in the form of glass fiber bundles interspersed throughout the web in a randomly oriented pattern. The mat also includes a binder substance to assist in holding the base fibers and reinforcement fiber bundles together.
    Type: Grant
    Filed: July 21, 1976
    Date of Patent: September 5, 1978
    Assignee: Johns-Manville Corporation
    Inventors: George John Hannes, Theodore Richard Rohweder, Hans Wendell Dreikorn, Philip Bickford Shepherd