Patents by Inventor Willibrordus J. Coppens

Willibrordus J. Coppens 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: 7230817
    Abstract: Multilayer ceramic chip capacitors which satisfy Y5V requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel, copper, and alloys thereof may be used for internal and external electrodes are made in accordance with the invention. The capacitors exhibit desirable dielectric properties (high capacitance, low dissipation factor, high insulation resistance), excellent performance on highly accelerated life testing, and very good resistance to dielectric breakdown. The dielectric layers comprise BaTiO3 doped with other metal oxides such as MgO, CaO, ZnO, MnO2, ZrO2, SiO2, Nd2O3, Nb2O5, and Y2O3.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: June 12, 2007
    Assignee: Ferro Corporation
    Inventors: Mohammed H. Megherhi, Mike S. H. Chu, Daniel E. McCauley, Elizabeth W. Römer, Willibrordus J. Coppens, Knuth Albertsen