Patents by Inventor William J. Freudenberg

William J. Freudenberg 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).

  • Plastic sheet barrier enclosure, system, and method
    Patent number: 7818941
    Abstract: A method of forming a safer and more secure containment for the removal or isolation of harmful and/or noxious particulate materials. The containment is formed using adhesive coated plastic sheeting to form an isolated enclosure. The adhesive holds the sheeting under negative pressure and is removable with minimal damage or transfer to wall and floor surfaces.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: October 26, 2010
    Assignee: Bearacade Products LLC
    Inventors: Christopher F. Freudenberg, William J. Freudenberg, David E. LeVasseur, Eugene L. Baratto, Curtis L. Larson, John A. Harrison