Patents by Inventor Anke Althoff

Anke Althoff 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).

  • Method for producing a ceramic substrate
    Patent number: 7722797
    Abstract: A method is disclosed for producing a ceramic substrate made of base that includes a stack of layers. Each layer in the stack includes a non-sintered ceramic material and a binder. The method includes debinding the layers in a temperature interval of TE1-TE3, where TE1 is a minimum debinding temperature and TE3>TE1, and sintering the layers at a temperature TS, where TS?TE3. Debinding and sintering are performed in a same furnace, and a temperature T of the base does not fall below TE1 during debinding and sintering.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: May 25, 2010
    Assignee: EPCOS AG
    Inventors: Anke Althoff, Holger Grabner
  • Piezoactuator with low stray capacitance
    Patent number: 7579756
    Abstract: A piezoelectric actuator includes a stack of piezoceramic layers and electrodes among the piezoceramic layers. At least one edge region of the stack does not include electrodes. A cover layer is at the at least one edge region. The cover layer has a dielectric constant that is less than a dielectric constant of a piezoceramic layer.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: August 25, 2009
    Assignee: EPCOS AG
    Inventors: Anke Althoff, Adalbert Feltz, Heinz Florian
  • Piezoactuator with Low Stray Capacitance
    Publication number: 20080042522
    Abstract: A piezoelectric actuator includes a stack of piezoceramic layers and electrodes among the piezoelectric layers. At least one edge region of the stack does not include electrodes. A cover layer is at the at least one edge region. The cover layer has a dielectric constant that is less than a dielectric constant of a piezoceramic layer.
    Type: Application
    Filed: January 18, 2006
    Publication date: February 21, 2008
    Inventors: Anke Althoff, Adalbert Feltz, Heinz Florian
  • Method for producing a ceramic substrate
    Publication number: 20060108717
    Abstract: A method is disclosed for producing a ceramic substrate made of base that includes a stack of layers. Each layer in the stack includes a non-sintered ceramic material and a binder. The method includes debinding the layers in a temperature interval of TE1-TE3, where TE1 is a minimum debinding temperature and TE3>TE1, and sintering the layers at a temperature TS, where TS?TE3. Debinding and sintering are performed in a same furnace, and a temperature T of the base does not fall below TE1 during debinding and sintering.
    Type: Application
    Filed: August 4, 2003
    Publication date: May 25, 2006
    Inventors: Anke Althoff, Holger Grabner