Patents by Inventor Toshiaki Ui

Toshiaki Ui 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).

  • Dehydration method
    Patent number: 8257557
    Abstract: A dehydration method for removing water from a hydrolysis reaction mixture containing unreacted water generated when monochlorobenzene is hydrolyzed to produce phenol, the method for dehydrating the hydrolysis reaction mixture includes supplying a hydrolysis reaction mixture to a distillation tower, supplying a liquid containing monochlorobenzene to the tower top portion of the distillation tower, and removing the substantially whole amount of the water in the hydrolysis reaction mixture together with monochlorobenzene from the tower top portion by distillation.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: September 4, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tateo Seo, Tetsuya Suzuta, Toshiaki Ui
  • Process for producing hydroxy compound
    Patent number: 7807855
    Abstract: The invention provides a process for producing a hydroxy compound including the following steps: (a) chlorination step: a step of producing a chlorinated hydrocarbon and hydrogen chloride from a hydrocarbon and chlorine; (b) hydrolysis step: a step of producing a hydroxy compound and hydrogen chloride from the chlorinated hydrocarbon and water; and (c) oxidation step: a step of producing chlorine by reaction of oxygen and hydrogen chloride obtained in the chlorination step and/or the hydrolysis step, and (d) recycling at least a portion of the chlorine to the chlorination step.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: October 5, 2010
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toshiaki Ui, Tetsuya Suzuta, Tateo Seo
  • DEHYDRATION METHOD
    Publication number: 20090159422
    Abstract: A dehydration method for removing water from a hydrolysis reaction mixture containing unreacted water generated when monochlorobenzene is hydrolyzed to produce phenol, the method for dehydrating the hydrolysis reaction mixture comprising the steps of supplying a hydrolysis reaction mixture to a distillation tower, supplying a liquid containing monochlorobenzene to the tower top portion of the distillation tower, and removing the substantially whole amount of the water in the hydrolysis reaction mixture together with monochlorobenzene from the tower top portion by distillation.
    Type: Application
    Filed: August 29, 2006
    Publication date: June 25, 2009
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tateo Seo, Tetsuya Suzuto, Toshiaki Ui
  • Process for Producing Hydroxy Compound
    Publication number: 20090048470
    Abstract: The invention provides a process for producing a hydroxy compound comprising the following steps: chlorination step: a step of obtaining a chlorinated hydrocarbon and hydrogen chloride from a hydrocarbon and chlorine; hydrolysis step: a step of obtaining a hydroxy compound and hydrogen chloride from the chlorinated hydrocarbon and water; and oxidation step; a step of obtaining chlorine by reaction of oxygen and hydrogen chloride obtained in the chlorination step and/or the hydrolysis step, and recycling at least a portion of the chlorine to the chlorination step.
    Type: Application
    Filed: October 4, 2005
    Publication date: February 19, 2009
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toshiaki Ui, Tetsuya Suzuta, Tateo Seo