Patents by Inventor Kurt-Ulrich Ritzau

Kurt-Ulrich Ritzau 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: 11261082
    Abstract: A micromechanical device that includes a silicon substrate with an overlying oxide layer and with a micromechanical functional layer lying above same, which extend in parallel to a main extension plane, a cavity being formed at least in the micromechanical functional layer and in the oxide layer. An access channel is formed in the oxide layer and/or in the micromechanical functional layer which, starting from the cavity, extends in parallel to the main extension plane and in the process extends in a projection direction, as viewed perpendicularly to the main extension plane, all the way into an access area outside the cavity. A method for manufacturing a micromechanical device is also described.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: March 1, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Eckhard Graf, Holger Rumpf, Jens Frey, Jochen Reinmuth, Kurt-Ulrich Ritzau, Achim Breitling
  • Publication number: 20200198966
    Abstract: A micromechanical device that includes a silicon substrate with an overlying oxide layer and with a micromechanical functional layer lying above same, which extend in parallel to a main extension plane, a cavity being formed at least in the micromechanical functional layer and in the oxide layer. An access channel is formed in the oxide layer and/or in the micromechanical functional layer which, starting from the cavity, extends in parallel to the main extension plane and in the process extends in a projection direction, as viewed perpendicularly to the main extension plane, all the way into an access area outside the cavity. A method for manufacturing a micromechanical device is also described.
    Type: Application
    Filed: December 17, 2019
    Publication date: June 25, 2020
    Inventors: Eckhard Graf, Holger Rumpf, Jens Frey, Jochen Reinmuth, Kurt-Ulrich Ritzau, Achim Breitling