Patents by Inventor Mark Ramsbey

Mark Ramsbey 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).

  • Selectively oxidized field oxide region
    Patent number: 5869385
    Abstract: A field oxide region is formed with a reduced bird's beak by selectively implanting impurity atoms into the semiconductor substrate to increase the oxidation rate of the substrate and thermally oxidizing the implanted region of the semiconductor substrate. In another embodiment, a gate oxide layer having a differential thickness is formed by implanting impurity atoms into the semiconductor substrate in a selected region wherein a thick portion of the gate oxide is to be formed and thermally oxidizing the semiconductor substrate.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: February 9, 1999
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Yuan Tang, Mark Ramsbey