Patents by Inventor Yukiko Matsuoto

Yukiko Matsuoto 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 PURIFYING CHLOROSILANE
    Publication number: 20120148471
    Abstract: A method for purifying a crude chlorosilane containing a boron compound, which is characterized by comprising a step wherein a chlorosilane containing a boron compound is brought into contact with an ion-exchange resin, and a step wherein the chlorosilane containing a boron compound is brought into contact with a silica adsorbent. It is preferable that the crude chlorosilane is brought into contact with the ion-exchange resin first, and then brought into contact with the silica adsorbent. In this connection, a silica gel is preferable as the silica absorbent, and a resin having a functional group represented by the following general formula: —CH2NR1R2 (wherein R1 and the like are as defined in the description) is preferable as the ion-exchange resin.
    Type: Application
    Filed: August 27, 2009
    Publication date: June 14, 2012
    Applicant: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shin Sugimura, Kazumasa Matsuoto, Yukiko Matsuoto, Mineto Kobayashi, Hidehiro Matsuda, Takashi Matsuzawa