Patents by Inventor Shigetomi Kawata

Shigetomi Kawata 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 sucrose fatty acid ester
    Patent number: 5565557
    Abstract: A process for producing a sucrose fatty acid ester wherein the sucrose fatty acid ester is recovered from a reaction mixture prepared by reacting sucrose with a fatty acid alkyl ester in the presence of an alkali catalyst by using dimethyl sulfoxide as a reaction solvent, the process comprising: (i) subjecting the reaction mixture to a first liquid-liquid extraction by using a hardly water-miscible organic solvent, which is selected from an alcohol having at least 4 carbon atoms and a ketone having at least 4 carbon atoms, and water as extractants, with regulating the pH value of an aqueous phase to 3 to 7.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: October 15, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yasuaki Koyama, Nobuyuki Kawase, Hiroshi Yamamoto, Shigetomi Kawata, Yukio Kasori