Patents by Inventor Georg Wiesend

Georg Wiesend 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).

  • Piezoelectric tone generator and a process for producing it
    Patent number: 5196754
    Abstract: To produce a piezoelectric tone generator, a layer of filler-free bonding agent whose dynamic viscosity is 800 to 18,000 mPa.multidot.s is applied between a metallized carrier plate and a piezoceramic wafer. The package composed of carrier plate, bonding layer and ceramic plate is pressed together, the quantity of bonding agent being chosen to be so large that during pressing a bead covering the edge of the ceramic wafer is formed. The bonding layer is cured thereafter, firstly catalytically or thermally and then by UV irradiation.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: March 23, 1993
    Assignee: Hoechst CeramTec Aktiengesellschaft
    Inventors: Heinrich Berthold, Thomas Uhl, Kurt Handschuh, Georg Wiesend