Patents by Inventor Thomas Gra?hoff

Thomas Gra?hoff 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).

  • Micromechanical device, micromechanical system, apparatus for adjusting sensitivity of a micromechanical device, method for producing a micromechanical device
    Patent number: 7679152
    Abstract: A micromechanical device has a layer; at least a first slot formed in the layer to define a first oscillation element oscillatably suspended via a first spring portion of the layer; and at least a second slot formed in the layer to define a second oscillation element oscillatably suspended via a second spring portion of the layer, wherein a trench is formed in the spring portion pair in a main surface of the layer, wherein a resonance frequency of the first oscillation element is different from that of the second oscillation element, and the first and second spring portions and the trench are formed such that, in an anisotropic lateral material removal and/or addition of the first and second spring portions, a ratio of a relative change of the resonance frequency of the second oscillation element to that of the first oscillation element ranges from 0.8 to 1.2.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: March 16, 2010
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der andewandten Forschung e.V.
    Inventors: Thomas Klose, Thomas Graβhoff