Patents by Inventor Kazue Ohe

Kazue Ohe 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).

  • Method for producing optical fiber having formyl groups on core surface thereof
    Patent number: 5354574
    Abstract: The present invention is directed to a method for producing an optical fiber having formyl groups on a core surface. In one embodiment, a plastic optical fiber having formyl groups on a core surface is obtained by immersing the core surface of the plastic optical fiber in a treating solution containing at least a 0.5 to 40 mM alkali metal hydroxide and a compound having formyl groups in water or lower alcohol solvent. In the other embodiment, a plastic optical fiber having formyl groups on a core surface is obtained by introducing a vic-diol group, a primary hydroxyl group or an alkenyl group on the core surface, and then oxidizing it. Turbidity on the core surface of the optical fiber thus obtained is minimized, thereby reducing the transmittance losses of light.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: October 11, 1994
    Assignee: Ibiden Co., Ltd.
    Inventors: Takeshi Kobayashi, Shinji Iijima, Ken-ichi Shimada, Kazue Ohe, Yasunori Sakai