Patents by Inventor Shouji Iiyama

Shouji Iiyama 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).

  • Chlorosilane production method
    Patent number: 9840421
    Abstract: When a disproportionated chlorosilane is to be produced by causing a starting material chlorosilane liquid to flow through a catalyst-packed layer which is packed with a weakly basic anion exchange resin as a disproportionation reaction catalyst to carry out a disproportionation reaction, before the disproportionation reaction is carried out, the disproportionation reaction catalyst is brought into contact with a processing gas obtained by diluting a chlorosilane with an inert gas to prevent the deterioration of the disproportionation reaction catalyst at the start of the reaction so as to carry out the disproportionation of the chlorosilane efficiently.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: December 12, 2017
    Assignee: TOKUYAMA CORPORATION
    Inventors: Shouji Iiyama, Tomohiro Yamamoto, Yukihiro Takata, Shinichirou Koyanagi, Kanji Sakata
  • CHLOROSILANE PRODUCTION METHOD
    Publication number: 20110236289
    Abstract: When a disproportionated chlorosilane is to be produced by causing a starting material chlorosilane liquid to flow through a catalyst-packed layer which is packed with a weakly basic anion exchange resin as a disproportionation reaction catalyst to carry out a disproportionation reaction, before the disproportionation reaction is carried out, the disproportionation reaction catalyst is brought into contact with a processing gas obtained by diluting a chlorosilane with an inert gas to prevent the deterioration of the disproportionation reaction catalyst at the start of the reaction so as to carry out the disproportionation of the chlorosilane efficiently.
    Type: Application
    Filed: December 22, 2009
    Publication date: September 29, 2011
    Inventors: Shouji Iiyama, Tomohiro Yamamoto, Yukihiro Takata, Shinichiro Koyanagi, Kanji Sakata