Patents by Inventor Keiji Chiwaki

Keiji Chiwaki 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 OXIDE
    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