Patents by Inventor Tuman Allen

Tuman Allen 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).

  • Publication number: 20070246795
    Abstract: Trench isolation structures and methods to form same for use in the manufacture of semiconductor devices are described. The trench isolation structures are formed using several processing schemes that utilize disclosed dry etching processes to form a significant depth A between an array trench depth and a periphery trench depth. One etching method creates a trench delta depth utilizing a single dry etch step, while two other etching methods create a trench A depth by utilizing three dry etch steps.
    Type: Application
    Filed: April 20, 2006
    Publication date: October 25, 2007
    Inventors: Xiaolong Fang, Ramakanth Alapati, Tuman Allen
  • Publication number: 20060043449
    Abstract: The invention includes a transistor device having a semiconductor substrate with an upper surface. A pair of source/drain regions are formed within the semiconductor substrate and a channel region is formed within the semiconductor substrate and extends generally perpendicularly relative to the upper surface of the semiconductor substrate. A gate is formed within the semiconductor substrate between the pair of the source/drain regions.
    Type: Application
    Filed: September 1, 2004
    Publication date: March 2, 2006
    Inventors: Sanh Tang, Gordon Haller, Kris Brown, Tuman Allen