Patents by Inventor Kuichiro Ikeda

Kuichiro Ikeda 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 of preparing benzothiazepine derivatives
    Patent number: 4438035
    Abstract: A benzothiazepine derivative of the formula: ##STR1## wherein R is hydrogen or acetyl, is prepared by condensing a compound of the formula: ##STR2## wherein R is the same as defined above, with 2-(diamethylamino)ethyl halide (i) in the presence of potassium hydroxide in acetone; or (ii) in the presence of potassium carbonate in acetone, lower alkyl acetate, a mixture of acetone and water or a mixture of lower alkyl acetate and water.
    Type: Grant
    Filed: December 1, 1982
    Date of Patent: March 20, 1984
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Mitsunori Gaino, Ikuo Iijima, Shigeru Nishimoto, Kuichiro Ikeda, Tokuo Fujii