Patents by Inventor Ernst Gerdes

Ernst Gerdes 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).

  • Fuel impervious polymeric article
    Patent number: 4719135
    Abstract: The permeability of polymeric articles, particularly fuel tanks and fuel canisters is substantially reduced by thin varnish coatings comprising an epoxy resin, an amine containing curing agent and a flexibilizer.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: January 12, 1988
    Assignee: Huels Aktiengesellschaft
    Inventors: Ernst Gerdes, Friedhelm Mutzberg, Franz Pellengahr