Patents by Inventor Robert R. Bohm

Robert R. Bohm 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).

  • Patent number: 5230940
    Abstract: A formable sheet-form textile material for lining noise-affected rooms, particularly the passenger compartment of motor vehicles, consisting of a fabric, a needled or tufted layer as the visible surface, at least one thermoformable and foam-backable layer and a foamed backcoating, in which the layer serving as the visible surface consists of needlefelt or of a tufted surface (2) needled into felt as the backing layer (1), to the back of which a layer (3) of foamed latex, an impermeable barrier layer (4) and, optionally, the foamed backcoating (5) are applied. The backing layer may also be a thin layer of a lightly bonded felt onto which a thicker layer of an unbonded felt is laminated by means of a binder which simultaneously binds the needling into the backing layer. The layers have a permeability to sound which continuously decreases from the backing layer (1) to the backcoating (5). The barrier layer (4) is formed by a film or by a coating of unfoamed latex.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: July 27, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Robert R. Bohm, Erwin Schneider, Dietrich Hahl, Peter J. Russell, Hans-Gunter Vogt