Patents by Inventor Thomas Achammer

Thomas Achammer 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).

  • Center node for deep trench capacitors
    Patent number: 6271557
    Abstract: A trench capacitor cell, in accordance with the present invention, includes a trench having an outer electrode formed in a substrate adjacent to the trench. A storage node is formed in the trench and capacitively coupled to the outer electrode. A center node is capacitively coupled to the storage node, and the storage node surrounds the center node within the trench. The center node includes a portion extending from the trench for connecting to a potential to provide charge retention in the storage node during operation.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: August 7, 2001
    Assignee: Infineon Technologies AG
    Inventors: Ulrich Zimmermann, Thomas Achammer