Patents by Inventor Henricus H.M. Wagemans

Henricus H.M. Wagemans 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: 6201682
    Abstract: A thin-film component, for example a capacitor, a resistor and a coil, as well as combinations thereof. A substrate of an electrically insulating material (preferably glass), is provided with two U-shaped side contacts and with an electrical structure which is electrically connected to both side contacts. A flexible layer (preferably polyimide) is situated between the substrate and at least one of both legs of each of the U-shaped side contacts, which flexible layer is provided directly on the substrate surface, and in that the modules of elasticity of the material of the layer is below 50 GPa. By virtue of this measure, it is achieved that the components demonstrate a better resistance to standard bending tests. As a result, the product-failure percentage is reduced if these components are employed in flexible PCBs or in PCBs which are subjected to a vibration.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: March 13, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Jan H. Mooij, Henricus H.M. Wagemans, Joghum P. Venema
  • Patent number: 6128177
    Abstract: A capacitor comprises a number of ceramic layers on the basis of barium titanate as well as a number of electrode layers of palladium or a silver-palladium alloy, the ceramic layers and the electrode layers being alternately stacked to form a multilayer, which is also provided with two external electric connections which are in contact with a number of said electrode layers. In accordance with the invention, the electrode layers contain copper oxide, preferably 0.5-15 wt. %, calculated with respect to the overall quantity of palladium, silver and copper oxide. It has been found that the presence of a relatively small, yet effective quantity of copper oxide in the electrode material of Pd or Pd--Ag leads to a considerable increase of the internal mechanical strength and of the service life of CMCs. By employing the method in accordance with the invention, the percentage of rejects in the production of the capacitors can be reduced considerably.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: October 3, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Hermanus G. M. Titulaer, Henricus H. M. Wagemans
  • Patent number: 5841625
    Abstract: A ceramic multilayer capacitor includes a number of ceramic layers on the basis of a doped BaTiO.sub.3 and a number of electrode layers of Ni. The ceramic layers and the electrode layers are alternately stacked to form a multilayer structure which is provided with electric connections at both side faces. The composition of the main component of the doped BaTiO.sub.3 corresponds to the formula(Ba.sub.1-a-b Ca.sub.a Sr.sub.b) (Ti.sub.1-c-d-e-f Zr.sub.c Al.sub.d Mn.sub.e Nb.sub.f).sub.k O.sub.3+.delta.wherein:0.02.ltoreq.a.ltoreq.0.080.002.ltoreq.b.ltoreq.0.030.15.ltoreq.c.ltoreq.0.200.00<d.ltoreq.0.030.001.ltoreq.e.ltoreq.0.020.0005.ltoreq.f.ltoreq.0.011.001.ltoreq.k.ltoreq.1.005.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: November 24, 1998
    Assignee: U.S. Phillips Corporation
    Inventors: Detlev Hennings, Herbert Schreinemacher, Henricus H.M. Wagemans