Patents by Inventor Hans Haack

Hans Haack 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).

  • Flat sealing material made of a soft substance, particularly for the production of gaskets that are to be subjected to high stresses
    Patent number: 4748075
    Abstract: A soft gasket material comprising an asbestos-free fiber material containing fibers and an organic binder, the soft gasket material being comprised of a fiber sheet containing at least three different intermixed types of fibers, namely (a) natural organic fibers, (b) synthetic organic fibers, and (c) at least one fiber type selected from mineral fibers and metal fibers, and being additionally comprised of powdered to finely fibrous fillers and at least one organic binder.
    Type: Grant
    Filed: August 30, 1983
    Date of Patent: May 31, 1988
    Assignees: Goetze AG, Frenzelit Asbestwerke GmbH & Co. KG
    Inventors: Horst Beyer, Hans-Rainer Zerfass, Heribert Bechen, Hans Haack, Franz Kutnar