Patents by Inventor Helmut Thelen

Helmut Thelen 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).

  • Mounting element for roofing having loosely laid synthetic resin films
    Patent number: 4038804
    Abstract: A mounting element for synthetic resin films loosely laid on abutting thermal insulating panels for heat-insulated roof constructions without a gravel layer, which comprises a T-shaped panel securing means and a mounting flange means arranged at the base point of the T-shaped means at a right angle thereto and on one side thereof.
    Type: Grant
    Filed: May 5, 1975
    Date of Patent: August 2, 1977
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Karl Haage, Helmut Thelen, Heinz Uedelhoven