Patents by Inventor Yousuke Ohta

Yousuke Ohta 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).

  • Organic compound crystal and field-effect transistor
    Patent number: 7816679
    Abstract: A field-effect transistor includes a channel-forming region composed of an organic compound crystal including ?-electron conjugated molecules each containing chalcogen atoms as a constituent, wherein the distance between chalcogen atoms of adjacent ?-electron conjugated molecules is short, and the organic compound crystal has a periodic structure in which ?-electron conjugated molecules are two-dimensionally or three-dimensionally linked together.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: October 19, 2010
    Assignee: Sony Corporation
    Inventors: Akito Ugawa, Yousuke Ohta, Toshiyuki Kunikiyo, Masayuki Murakami
  • ORGANIC COMPOUND CRYSTAL AND FIELD-EFFECT TRANSISTOR
    Publication number: 20090072227
    Abstract: A field-effect transistor includes a channel-forming region composed of an organic compound crystal including ?-electron conjugated molecules each containing chalcogen atoms as a constituent, wherein the distance between chalcogen atoms of adjacent ?-electron conjugated molecules is short, and the organic compound crystal has a periodic structure in which ?-electron conjugated molecules are two-dimensionally or three-dimensionally linked together.
    Type: Application
    Filed: July 30, 2008
    Publication date: March 19, 2009
    Inventors: Akito Ugawa, Yousuke Ohta, Toshiyuki Kunikiyo, Masayuki Murakami
  • Organic compound crystal and field-effect transistor
    Patent number: 7425722
    Abstract: A field-effect transistor includes a channel-forming region composed of an organic compound crystal including ?-electron conjugated molecules each containing chalcogen atoms as a constituent, wherein the distance between chalcogen atoms of adjacent ?-electron conjugated molecules is short, and the organic compound crystal has a periodic structure in which ?-electron conjugated molecules are two-dimensionally or three-dimensionally linked together.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: September 16, 2008
    Assignee: Sony Corporation
    Inventors: Akito Ugawa, Yousuke Ohta, Toshiyuki Kunikiyo, Masayuki Murakami
  • Organic compound crystal and field-effect transistor
    Publication number: 20050285156
    Abstract: A field-effect transistor includes a channel-forming region composed of an organic compound crystal including ?-electron conjugated molecules each containing chalcogen atoms as a constituent, wherein the distance between chalcogen atoms of adjacent ?-electron conjugated molecules is short, and the organic compound crystal has a periodic structure in which ?-electron conjugated molecules are two-dimensionally or three-dimensionally linked together.
    Type: Application
    Filed: June 14, 2005
    Publication date: December 29, 2005
    Inventors: Akito Ugawa, Yousuke Ohta, Toshiyuki Kunikiyo, Masayuki Murakami