Patents by Inventor Masashi Kitano

Masashi Kitano 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 preparing 1,5-benzothiazepine derivatives
    Patent number: 5128469
    Abstract: This disclosure describes a process for the preparation of 1,5-benzothiazepinone derivatives. The process involves the use of sulfonic acids as catalysts to effect ring closure to form the 1,5-benzothiazepinone ring. The resulting compounds have well known pharmaceutical properties.
    Type: Grant
    Filed: June 26, 1991
    Date of Patent: July 7, 1992
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Shigeru Nishimoto, Akio Nakao, Yasuji Ikeda, Hiroyuki Nate, Hironori Hayashi, Tamotsu Okuno, Masashi Kitano, Sadao Maeda