Patents by Inventor Bauke Oppedijk

Bauke Oppedijk 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).

  • Composite piezoelectric multilayer element and method of manufacturing such an element
    Patent number: 5841216
    Abstract: The invention relates to a composite piezoelectric multilayer element of which, in operation, only a part is piezoelectrically active, and to a method of manufacturing such an element. In accordance with the invention, the piezoelectrically inactive part has larger dimensions in one or more directions than the part which, in operation, is piezoelectrically active when a voltage is applied across the electric connections of the element. Moreover, the inactive part is built up of ceramic foils and electrode layers whose thickness and composition correspond to the thickness and composition of the part of the element which, in operation, is piezoelectrically active. The element in accordance with the invention can be manufactured in a simple and inexpensive manner.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: November 24, 1998
    Assignee: U.S. Philips Corporation
    Inventors: Benedictus C. H. Fransen, Bauke Oppedijk, Henricus A. C. Didden