Patents by Inventor Shigeki Sakaue

Shigeki Sakaue 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).

  • Method for producing alkylsulfinylbenzamides and 1,2-benzisothiazol-3-ones
    Patent number: 5508416
    Abstract: A method for producing an alkylthiobenzamide by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of an alkylthiobenzamide with a halogen in a heterogeneous solvent; a method for producing an alkylsulfinylbenzamide by carrying out a reaction of a halobenzamide with an alkanethiol in the presence of a base in a heterogeneous solvent and a subsequent reaction with a halogen; and a method for producing a 1,2-benzisothiazol-3-one by carrying out a reaction of a 2-(alkylthio)benzamide with a halogenating agent.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: April 16, 1996
    Assignees: Sumitomo Seika Chemicals Co., Ltd., Sumitomo Chemical Co., Ltd.
    Inventors: Hirokazu Kagano, Hiroshi Goda, Shigeki Sakaue