Patents by Inventor Hiroko Oyama

Hiroko Oyama 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).

  • Polyimide film
    Patent number: 8314203
    Abstract: This polyimide film is superior in heat resistance, rigidity and high frequency properties, is free of inconveniences due to curling even when various functional layers are laminated by heating, and is preferable as a substrate film superior in thermal degradation stability for electronic parts. This polyimide film has a planar orientation coefficient of 0.79-0.89 as measured by an X-ray diffraction method, a difference in the surface planar orientation degree between one surface thereof and the other surface thereof of not more than 2 and a curling degree of not more than 5%, which is obtained by imidation of a polyimide precursor film having a particular imidation rate.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: November 20, 2012
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Masayuki Tsutsumi, Satoshi Maeda, Keizo Kawahara, Takefumi Yoshida, Kazutake Okamoto, Morio Morino, Shoichi Uemura, Akinobu Nagara, Noriko Takahashi, Hiroko Oyama, Shunji Kurahara, Jun Yasui
  • Polyimide film
    Publication number: 20070272124
    Abstract: This polyimide film is superior in heat resistance, rigidity and high frequency properties, is free of inconveniences due to curling even when various functional layers are laminated by heating, and is preferable as a substrate film superior in thermal degradation stability for electronic parts. This polyimide film has a planar orientation coefficient of 0.79-0.89 as measured by an X-ray diffraction method, a difference in the surface planar orientation degree between one surface thereof and the other surface thereof of not more than 2 and a curling degree of not more than 5%, which is obtained by imidation of a polyimide precursor film having a particular imidation rate.
    Type: Application
    Filed: December 27, 2004
    Publication date: November 29, 2007
    Applicant: Toyo Boseki Kabushiki Kaisha
    Inventors: Masayuki Tsutsumi, Satoshi Maeda, Keizo Kawahara, Takefumi Yoshida, Kazutake Okamoto, Morio Morino, Shoichi Uemura, Akinobu Nagara, Noriko Takahashi, Hiroko Oyama, Shunji Kurahara, Jun Yasui