Patents by Inventor Masakazu Hatta

Masakazu Hatta 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 thioanisole
    Patent number: 4124646
    Abstract: Industrially useful alkylphenyl sulfides are produced in high yield from phenyl mercaptan as a raw material by reaction of the phenyl mercaptan with an alkyl alcohol or dialkyl ether, or alkyl mercaptan or dialkyl sulfide having 1 to 4 carbon atoms as a novel alkylating agent at an elevated temperature, for example, 150.degree. to 600.degree. C, in a gaseous phase.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: November 7, 1978
    Assignee: Seitetsu Kagaku Co., Ltd.
    Inventors: Masao Kawamura, Masakazu Hatta, Nobuhiro Koune, Nobuyuki Kitagishi