Patents by Inventor Yoji Mizushima

Yoji Mizushima 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).

  • Process for producing propylene chlorohydrin
    Patent number: 7157609
    Abstract: A process of producing propylene chlorohydrin using a reactor having a one-way flow reaction area and a circulating flow reaction area which are connected in series. In this process, a propylene-containing gas is supplied to an aqueous solution of chlorine in the one-way flow reaction area to carry out at least part of a propylene chlorohydrin forming reaction so as to form a reaction mixture fluid containing propylene chlorohydrin and propylene and/or chlorine. The above reaction mixture fluid discharged from this reaction area is supplied to the circulating flow reaction area as at least part of a make-up medium, a propylene-containing gas and/or chlorine are/is supplied as required to continue the reaction in the circulating flow reaction area so as to obtain a reaction solution having a desired content of propylene chlorohydrin, and part of the reaction solution is extracted.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: January 2, 2007
    Assignee: Tokuyama Corporation
    Inventors: Hiroki Tanaka, Yoji Mizushima, Yoshikazu Kodama, Tomoaki Fujii, Manabu Kamamoto, Koujiro Miyazaki
  • Process for producing propylene chlorohydrin
    Publication number: 20040030198
    Abstract: A process of producing propylene chlorohydrin using a reactor having a one-way flow reaction area and a circulating flow reaction area which are connected in series. In this process, a propylene-containing gas is supplied to an aqueous solution of chlorine in the one-way flow reaction area to carry out at least part of a propylene chlorohydrin forming reaction so as to form a reaction mixture fluid containing propylene chlorohydrin and propylene and/or chlorine. The above reaction mixture fluid discharged from this reaction area is supplied to the circulating flow reaction area as at least part of a make-up medium, a propylene-containing gas and/or chlorine are/is supplied as required to continue the reaction in the circulating flow reaction area so as to obtain a reaction solution having a desired content of propylene chlorohydrin, and part of the reaction solution is extracted.
    Type: Application
    Filed: May 21, 2003
    Publication date: February 12, 2004
    Inventors: Hiroki Tanaka, Yoji Mizushima, Yoshikazu Kodama, Tomoaki Fujii, Manabu Kamamoto, Koujiro Miyazaki