Patents by Inventor Edwin H. Hayes

Edwin H. Hayes 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).

  • Process for laminating aramid waterleaves
    Patent number: 4481060
    Abstract: A process for combining layers of aramid waterleaves into a multi-ply structure wherein the layers are brought together in closely spaced relationship while being forwarded under low tension through a heating zone, the layers are heated, the layers are separated by mechanical means and purged by a stream of dry air to expel moisture-laden air from between the layers in a transverse direction while preventing moisture-laden air from moving along with the layers in the downstream direction, the layers are brought together, further heated and compacted under heat and pressure.
    Type: Grant
    Filed: December 10, 1980
    Date of Patent: November 6, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edwin H. Hayes