Patents by Inventor Shigenori Shiraishi

Shigenori Shiraishi 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).

  • Patent number: 7994348
    Abstract: A process for producing propylene oxide, which comprises: supplying a solution containing a peroxide selected from the group consisting of hydrogen peroxide and organic hydroperoxide having 2 or more of carbon atoms as a raw material and propylene to an epoxidation step to react the peroxide with propylene, and controlling a concentration of methyl hydroperoxide in the solution to be supplied to the epoxidation step.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: August 9, 2011
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kenji Chiwaki, Kazuo Suzuki, Shigenori Shiraishi
  • Patent number: 7763756
    Abstract: A method for collecting an object material from a solution, which comprises the following steps: a step of adding a second solvent to a solution composed of an object material to be collected and a first solvent, then mixing therewith to form an emulsion containing the object material in a state under which the emulsion is not uniformly dissolved in the second solvent, in the second solvent; and a step of separating thus obtained emulsion from the solution.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: July 27, 2010
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Shigenori Shiraishi, Shigeru Goto, Masaaki Katao
  • Publication number: 20100094029
    Abstract: A process for producing propylene oxide, which comprises: supplying a solution containing a peroxide selected from the group consisting of hydrogen peroxide and organic hydroperoxide having 2 or more of carbon atoms as a raw material and propylene to an epoxidation step to react the peroxide with propylene, and controlling a concentration of methyl hydroperoxide in the solution to be supplied to the epoxidation step.
    Type: Application
    Filed: July 28, 2006
    Publication date: April 15, 2010
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Keiji Chiwaki, Kazuo Suzuki, Shigenori Shiraishi
  • Publication number: 20070123721
    Abstract: A method for collecting an object material from a solution, which comprises the following steps: a step of adding a second solvent to a solution composed of an object material to be collected and a first solvent, then mixing therewith to form an emulsion containing the object material in a state under which the emulsion is not uniformly dissolved in the second solvent, in the second solvent; and a step of separating thus obtained emulsion from the solution.
    Type: Application
    Filed: September 16, 2004
    Publication date: May 31, 2007
    Inventors: Shigenori Shiraishi, Shigeru Goto, Masaaki Katao