Patents by Inventor Carl David Willis

Carl David Willis 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).

  • Bipolar transistor
    Patent number: 8330223
    Abstract: A bipolar transistor has a collector having a base layer provided thereon and a shallow trench isolation structure formed therein. A base poly layer is provided on the shallow trench isolation structure. The shallow trench isolation structure defines a step such that a surface of the collector projects from the shallow trench isolation structure adjacent the collector.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: December 11, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Klaus Schimpf, Manfred Schiekofer, Carl David Willis, Michael Waitschull, Wolfgang Ploss
  • BIPOLAR TRANSISTOR
    Publication number: 20110049517
    Abstract: A bipolar transistor has a collector having a base layer provided thereon and a shallow trench isolation structure formed therein. A base poly layer is provided on the shallow trench isolation structure. The shallow trench isolation structure defines a step such that a surface of the collector projects from the shallow trench isolation structure adjacent the collector.
    Type: Application
    Filed: September 2, 2010
    Publication date: March 3, 2011
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Klaus SCHIMPF, Manfred SCHIEKOFER, Carl David WILLIS, Michael WAITSCHULL, Wolfgang PLOSS