Patents by Inventor Naoto Yakoh

Naoto Yakoh 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).

  • Aromatic polyethers, fluorescent resin compositions containing same, and processes for preparing same
    Patent number: 5258485
    Abstract: New and useful aromatic polyethers, which are high in glass transition temperatures, possess excellent mechanical properties, thermal resistance, solvent resistance, and generate fluorescence, are described. Also described are fluorescent resin compositions containing the aromatic polyethers. Processes for preparing the aromatic polyethers and the fluorescent resin compositions are also described.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: November 2, 1993
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Shigeru Matsuo, Naoto Yakoh, Shinji Chino
  • Aromatic polyethers, fluorescent resin compositions containing same, and processes for preparing same
    Patent number: 5153306
    Abstract: New and useful aromatic polyethers, which are high in glass transition temperatures, possess excellent mechanical properties, thermal resistance, solvent resistance, and generate fluorescence, are described. Also described are fluorescent resin compositions containing the aromatic polyethers. Processes for preparing the aromatic polyethers and the fluorescent resin compositions are also described.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: October 6, 1992
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Shigeru Matsuo, Naoto Yakoh, Shinji Chino