Patents by Inventor Nobuhiko Kurahashi

Nobuhiko Kurahashi 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).

  • Etch mask
    Publication number: 20030042223
    Abstract: Provided is a etch mask that prevents the separation of the etch mask which occurs in the vicinity of an end portion of a material to be etched during etching step. The etch mask is one formed on a surface of a material to be etched and comprising collected linear masks. A portion of a linear mask positioned in the vicinity of an end portion of the material to be etched becomes a wider portion as compared with the remaining portion or a zigzag portion. As required, the middle portion of the linear mask also becomes a wider portion or a zigzag portion.
    Type: Application
    Filed: January 30, 2002
    Publication date: March 6, 2003
    Inventors: Koichi Toyosaki, Nobuhiko Kurahashi, Satoshi Irino, Naoki Tsukiji