Patents by Inventor Chihiro Otogawa

Chihiro Otogawa 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 allyl alcohol
    Patent number: 8083903
    Abstract: An azeotropic distillation method, comprising a reaction step, a distillation step for separating and refining a reaction product, and a recovery step for collecting a reactant after the distillation step; wherein at least one component constituting the reactant in the reaction step can act as an entrainer for the azeotropic distillation in the distillation step; and a portion of the reactant capable of acting as the entrainer is supplied to the distillation step.
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: December 27, 2011
    Assignee: Showa Denko K.K.
    Inventors: Hiroshi Maruta, Chihiro Otogawa
  • AZEOTROPIC DISTILLATION METHOD
    Publication number: 20090166174
    Abstract: An azeotropic distillation method, comprising a reaction step, a distillation step for separating and refining a reaction product, and a recovery step for collecting a reactant after the distillation step; wherein at least one component constituting the reactant in the reaction step can act as an entrainer for the azeotropic distillation in the distillation step; and a portion of the reactant capable of acting as the entrainer is supplied to the distillation step.
    Type: Application
    Filed: February 1, 2007
    Publication date: July 2, 2009
    Applicant: SHOWA DENKO K.K.
    Inventors: Hiroshi Maruta, Chihiro Otogawa