Patents by Inventor Anton Leidl

Anton Leidl 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: 7589452
    Abstract: Elements and methods for forming elements that operate with acoustic waves are disclosed. The element includes a piezoelectric electric substrate that has a first thermal coefficient of expansion, electrically conducting element structures on an upper side of the substrate, a compensation layer on an underside of the substrate, and an SiO2 layer over the element structures.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: September 15, 2009
    Assignee: EPCOS AG
    Inventors: Markus Hauser, Ulrich Knauer, Anton Leidl, Evelyn Riha, Gerd Riha, Ulrike Rösler, Werner Ruile, Clemens Ruppel, Gerd Scholl, Ulrich Wolff
  • Publication number: 20090129611
    Abstract: The invention relates to a microphone membrane (M1) comprising two piezoelectric layers (PS1, PS2) with c-axes oriented in the same direction. A first electroconductive surface (E11) is formed in the central metal layer and subjected to a first electrical potential. The piezoelectric layers (PS1, PS2) are respectively arranged between the central metal layer (ML2) and an outer metal layer (ML1, ML3). In a preferred embodiment, the membrane (M1) has a largely symmetrical structure in terms of the layer sequence and the layer thickness thereof.
    Type: Application
    Filed: February 8, 2006
    Publication date: May 21, 2009
    Applicant: EPCOS AG
    Inventors: Anton Leidl, Wolfgang Pahl, Ulrich Wolff
  • Publication number: 20090011554
    Abstract: An electrical component has electrically conducting structures placed on an electrically isolating or semiconductive substrate and component structures sensitive to a voltage or an electrical arcing and galvanically separated from one another. To prevent an arcing between the galvanically separated component structures, the component structures are short-circuited with a shunt line having a smaller cross-section than the remaining electrical conductor tracks. The shunt lines can be burnt through by application of an electrical current at any given time, whereby a galvanic separation of the component structures is effected, if necessary, for the function of the component.
    Type: Application
    Filed: July 9, 2008
    Publication date: January 8, 2009
    Applicant: EPCOS AG
    Inventors: Thomas Baier, Waldemar Gawlik, Gunter Kovacs, Anton Leidl, Christian Math, Werner Ruile
  • Publication number: 20090001553
    Abstract: A micro electro-mechanical systems (MEMS) package is described herein. The package includes a carrier substrate having a top side, a MEMS chip mounted on the top side of the carrier substrate, and at least one chip component on or above the top side of the carrier substrate or embedded in the carrier substrate. The package also includes a thin metallic shielding layer covering the MEMS chip and the chip component and forming a seal with the top side of the carrier substrate.
    Type: Application
    Filed: November 6, 2006
    Publication date: January 1, 2009
    Applicant: EPCOS AG
    Inventors: Wolfgang Pahl, Anton Leidl, Stefan Seitz, Hans Krueger, Alois Stelzl
  • Patent number: 7459991
    Abstract: An apparatus including a piezoelectric substrate having at least one transducer electrode structure. The structure having a metallization formed by one or more metals with a mean specific density that is at least 50% higher than that of aluminum. The structure having a compensation layer that is applied fully or partially over the metallization. The compensation layer is of a material having a temperature dependence of elastic constants that counteracts the temperature coefficient of frequency of the substrate. The compensation layer has a thickness that is less than 15% of an acoustic wavelength of a wave capable of propagation in the structure.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: December 2, 2008
    Assignee: Epcos AG
    Inventors: Werner Ruile, Ulrike Roesler, Ulrich Wolff, Anton Leidl, Gerd Scholl, Markus Hauser, Ulrich Knauer
  • Publication number: 20080267431
    Abstract: A microphone includes a first diaphragm and a second diaphragm coupled to the first diaphragm by a closed air volume. The first diaphragm and the second diaphragm each constitutes a piezoelectric diaphragm. The first diaphragm and the second diaphragm are electrically coupled so that movement of the first diaphragm causes movement of the second diaphragm.
    Type: Application
    Filed: February 8, 2006
    Publication date: October 30, 2008
    Applicant: EPCOS AG
    Inventors: Anton Leidl, Wolfgang Pahl, Ulrich Wolff
  • Publication number: 20080253056
    Abstract: A capacitor with a multilayer structure on a ceramic or crystalline substrate is proposed that comprises at least one lower and one upper electrode as well as a tunable dielectric arranged therebetween in which resonant oscillation modes of bulk acoustic waves can be propagated, wherein, by suitable selection regarding material and thickness and a suitable number of layers in the multilayer structure, the latter is tuned such that the resonant frequencies of the oscillation modes lie outside of band ranges used in mobile telephones. Circuits with tunable capacitors that find multiple uses inside terminal devices for mobile communication are additionally proposed.
    Type: Application
    Filed: September 12, 2006
    Publication date: October 16, 2008
    Inventors: Anton Leidl, Wolfgang Sauer, Stefan Seitz
  • Publication number: 20080247585
    Abstract: An electrical module includes a base plate having an acoustic channel that opens into a first cavity at a first end and that is closed off by a microphone chip at a second end. The microphone chip borders a second cavity that opens to an exterior of the electrical module. The second cavity is separated from the acoustic channel by the microphone chip.
    Type: Application
    Filed: February 8, 2006
    Publication date: October 9, 2008
    Applicant: EPCOS AG
    Inventors: Anton Leidl, Wolfgang Pahl, Ulrich Wolff
  • Patent number: 7411291
    Abstract: An electrical component has electrically conducting structures placed on an electrically isolating or semiconductive substrate and component structures sensitive to a voltage or an electrical arcing and galvanically separated from one another. To prevent an arcing between the galvanically separated component structures, the component structures are short-circuited with a shunt line having a smaller cross-section than the remaining electrical conductor tracks. The shunt lines can be burnt through by application of an electrical current at any given time, whereby a galvanic separation of the component structures is effected, if necessary, for the function of the component.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: August 12, 2008
    Assignee: EPCOS AG
    Inventors: Thomas Baier, Waldemar Gawlik, Günter Kovacs, Anton Leidl, Christian Math, Werner Ruile
  • Patent number: 7345409
    Abstract: For a component operating with acoustic waves, it is proposed to arrange the electrode structure over a mechanically stable adaptation layer that serves to dissipate the electromechanical stresses. Further improvements of the output compatibility are achieved with additional intermediate layers and passivation layers applied on the sides or the entire surface over the electrode structure.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: March 18, 2008
    Assignee: EPCOS AG
    Inventors: Anton Leidl, Ulrich Knauer, Werner Ruile, Lijun Peng
  • Publication number: 20070296306
    Abstract: Elements and methods for forming elements that operate with acoustic waves are disclosed. The element includes a piezoelectric electric substrate that has a first thermal coefficient of expansion, electrically conducting element structures on an upper side of the substrate, a compensation layer on an underside of the substrate, and an SiO2 layer over the element structures.
    Type: Application
    Filed: August 18, 2005
    Publication date: December 27, 2007
    Inventors: Markus Hauser, Ulrich Knauer, Anton Leidl, Evelyn Riha, Gerd Riha, Ulrike Rosler, Werner Ruile, Clemens Ruppel, Gerd Scholl, Ulrich Wolff
  • Publication number: 20060284307
    Abstract: An electrical component has electrically conducting structures placed on an electrically isolating or semiconductive substrate and component structures sensitive to a voltage or an electrical arcing and galvanically separated from one another. To prevent an arcing between the galvanically separated component structures, the component structures are short-circuited with a shunt line having a smaller cross-section than the remaining electrical conductor tracks. The shunt lines can be burnt through by application of an electrical current at any given time, whereby a galvanic separation of the component structures is effected, if necessary, for the function of the component.
    Type: Application
    Filed: July 24, 2006
    Publication date: December 21, 2006
    Inventors: Thomas Baier, Waldemar Gawlik, Gunter Kovacs, Anton Leidl, Christian Math, Werner Ruile
  • Publication number: 20060175639
    Abstract: For a component operating with acoustic waves, it is proposed to arrange the electrode structure over a mechanically stable adaptation layer that serves to dissipate the electromechanical stresses. Further improvements of the output compatibility are achieved with additional intermediate layers and passivation layers applied on the sides or the entire surface over the electrode structure.
    Type: Application
    Filed: February 7, 2003
    Publication date: August 10, 2006
    Inventors: Anton Leidl, Ulrich Knauer, Werner Ruile, Lijun Peng
  • Publication number: 20060103486
    Abstract: SAW component with improved temperature coefficient of frequency To reduce losses in a SAW component assembled on a piezoelectric substrate (S), the mass load on the metallization (M) is increased until the propagation velocity of the surface wave comes to rest below the propagation velocity of the fast shear wave. To limit the increase in the temperature coefficient of frequency in this process, a metallization with a significantly higher specific density than [that of] Al is used. The temperature coefficient of frequency of the component is simultaneously reduced by a compensation layer (K) applied to essentially the entire surface, said compensation layer being made of a material having a temperature dependency of the elastic coefficient that counteracts that of the substrate-metallization combination.
    Type: Application
    Filed: December 16, 2003
    Publication date: May 18, 2006
    Inventors: Werner Ruile, Ulrike Roesler, Ulrich Wolff, Anton Leidl, Gerd Scholl, Markus Hauser, Ulrich Knauer
  • Patent number: 6774645
    Abstract: A device for determining whether a lubricant to be examined effects the formation of a deposit on a sensor element has a sensor element for detecting values of at least one physical parameter of the lubricant. The sensor element is in contact with the lubricant. Furthermore, there is provided a potential difference source for applying a potential difference between the sensor element and the lubricant. Moreover, there is provided an evaluator for evaluating at least two values of the physical parameter which are detected at different potential states between the sensor element and the lubricant in order to thus determine whether the lubricant causes a deposit formation on the sensor element.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: August 10, 2004
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Anton Leidl, Peter Langer, Ulrich Virnich
  • Patent number: 6186005
    Abstract: A liquid sensor has comb-shaped electrodes, applied to a piezoelectric substrate, as interdigital transducers for generating an electroacoustic wave from a transmitting transducer to a receiving transducer. The number of finger pairs of the interdigital transducers and the material out of which the electrodes are made are so chosen that a surface shear wave generated by the transmitting transducer and a bulk shear wave generated by the transmitting transducer have different frequencies.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: February 13, 2001
    Assignee: Fraunhofer-Gesellschaft Zur Forderung der Angewandten Forschung, E.V.
    Inventor: Anton Leidl