Patents by Inventor Friederike Apel

Friederike Apel 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).

  • Piezoceramic lead-free material
    Patent number: 10008661
    Abstract: The invention relates to a piezoelectric lead-free material based on bismuth sodium titanate, to a method for the production thereof, and to the use thereof.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: June 26, 2018
    Assignee: CeramTec GmbH
    Inventors: Friederike Apel, Hans-Juergen Schreiner, Claudia Voigt
  • PIEZOCERAMIC LEAD-FREE MATERIAL
    Publication number: 20140120032
    Abstract: The invention relates to a piezoelectric lead-free material based on bismuth sodium titanate, to a method for the production thereof, and to the use thereof.
    Type: Application
    Filed: June 29, 2012
    Publication date: May 1, 2014
    Applicant: Ceram Tec GmbH
    Inventors: Friederike Apel, Hans-Juergen Schreiner, Claudia Voigt