Patents by Inventor Fernand Wilhelm

Fernand Wilhelm 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).

  • Laminated perforated acoustical foam
    Patent number: 8118136
    Abstract: Prepare an acoustical polymeric foam by providing at least two initial polymeric foams, perforating all the way through the initial polymeric foams and then laminating the perforated initial foams together such that a perforated surface of one foam adheres to a perforated surface of an adjoining perforated initial foam.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: February 21, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: Jean-Francois Koenig, Fernand Wilhelm
  • LAMINATED PERFORATED ACOUSTICAL FOAM
    Publication number: 20110232993
    Abstract: Prepare an acoustical polymeric foam by providing at least two initial polymeric foams, perforating all the way through the initial polymeric foams and then laminating the perforated initial foams together such that a perforated surface of one foam adheres to a perforated surface of an adjoining perforated initial foam.
    Type: Application
    Filed: September 18, 2009
    Publication date: September 29, 2011
    Inventors: Jean-Francois Koenig, Fernand Wilhelm