Patents by Inventor Takahiro Shibiuya

Takahiro Shibiuya 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).

  • Manufacturing method for variable resistive element
    Patent number: 7615459
    Abstract: A manufacturing method for a variable resistive element according to which a stable switching operation can be achieved with excellent reproducibility is provided. A conductive thin film is deposited on a semiconductor substrate and patterned to a predetermined form, and after that, a first interlayer insulating film is deposited. An opening is then created in a predetermined location on the first interlayer insulating film in such a manner that the upper surface of the conductive thin film is exposed and the thickness of the conductive thin film formed at the bottom of this opening is reduced through processing, and after that, an oxidation process is carried out on the periphery of the exposed conductive thin film. As a result, a variable resistor film is formed in the peripheral region of the opening, and this variable resistor film divides the conductive thin film into a first electrode and a second electrode.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: November 10, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yushi Inoue, Tetsuya Ohnishi, Kazuya Ishihara, Takahiro Shibiuya, Yasunari Hosoi, Shinobu Yamazaki, Takashi Nakano