Patents by Inventor Willibrordus J. L. M. J. Coppens

Willibrordus J. L. M. 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: 8114801
    Abstract: Multilayer ceramic chip capacitors which satisfy COG requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel 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 a strontium zirconate matrix doped with other metal oxides such as TiO2, MgO, B2O3, CaO, Al2O3, SiO2, and SrO in various combinations.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: February 14, 2012
    Assignee: Ferro Corporation
    Inventors: Walter J. Symes, Jr., Mohammed H. Megherhi, Elisabeth W. J. Römer, Mike S. H. Chu, Willibrordus J. L. M. J. Coppens
  • Publication number: 20110090619
    Abstract: Multilayer ceramic chip capacitors which satisfy COG requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel 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 a strontium zirconate matrix doped with other metal oxides such as TiO2, MgO, B2O3, CaO, Al2O3, SiO2, and SrO in various combinations.
    Type: Application
    Filed: November 15, 2010
    Publication date: April 21, 2011
    Applicant: FERRO CORPORATION
    Inventors: Walter J. Symes, JR., Mohammed H. Megherhi, Elisabeth W. J. Römer, Mike S. H. Chu, Willibrordus J. L. M. J. Coppens
  • Patent number: 7858548
    Abstract: Multilayer ceramic chip capacitors which satisfy COG requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel 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 a strontium zirconate matrix doped with other metal oxides such as TiO2, MgO, B2O3, CaO, Al2O3, SiO2, and SrO in various combinations.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: December 28, 2010
    Assignee: Ferro Corporation
    Inventors: Walter J. Symes, Jr., Mohammed H. Megherhi, Elisabeth W. J. Römer, Mike S. H. Chu, Willibrordus J. L. M. J. Coppens
  • Patent number: 7727922
    Abstract: Multilayer ceramic chip capacitors which satisfy X8R requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel 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 a barium titanate base material doped with other metal oxides such as BaO, Y2O3, ZrO2, SiO2, MgO, MnO, MoO3, CaO, Lu2O3, Yb2O3, or WO3 in various combinations.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: June 1, 2010
    Assignee: Ferro Corporation
    Inventors: Gerhardus W. Koebrugge, Knuth Albertsen, Willibrordus J. L. M. J. Coppens
  • Publication number: 20090213527
    Abstract: Multilayer ceramic chip capacitors which satisfy X8R requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel 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 a barium titanate base material doped with other metal oxides such as BaO, Y2O3, ZrO2, SiO2, MgO, MnO, MoO3, CaO, Lu2O3, Yb2O3, or WO3 in various combinations.
    Type: Application
    Filed: May 4, 2009
    Publication date: August 27, 2009
    Applicant: FERRO CORPORATION
    Inventors: Gerhardus W. Koebrugge, Knuth Albertsen, Willibrordus J. L. M. J. Coppens
  • Patent number: 7541306
    Abstract: Multilayer ceramic chip capacitors which satisfy X8R requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel 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 a barium titanate base material doped with other metal oxides such as BaO, Y2O3, ZrO2, SiO2, MgO, MnO, MoO3, CaO, Lu2O3, Yb2O3, or WO3 in various combinations.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: June 2, 2009
    Assignee: Ferro Corporation
    Inventors: Gerhardus W. Koebrugge, Knuth Albertsen, Willibrordus J. L. M. J. Coppens
  • Publication number: 20080169530
    Abstract: Multilayer ceramic chip capacitors which satisfy X8R requirements and which are compatible with reducing atmosphere sintering conditions so that non-noble metals such as nickel and nickel 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 a barium titanate base material doped with other metal oxides such as BaO, Y2O3, ZrO2, SiO2, MgO, MnO, MoO3, CaO, Lu2O3, Yb2O3, or WO3 in various combinations.
    Type: Application
    Filed: January 17, 2007
    Publication date: July 17, 2008
    Applicant: FERRO CORPORATION
    Inventors: Gerhardus W. Koebrugge, Knuth Albertsen, Willibrordus J. L. M. J. Coppens