Patents by Inventor Kohtaro Miwa

Kohtaro Miwa 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 making a stable pharmaceutical preparation of prostagladin E compounds, and/or 15R forms thereof
    Patent number: 4871772
    Abstract: A process for making a stable pharmaceutical preparation of prostaglandin E compounds and/or 15R forms thereof is diclosed.Prostagladin E compounds and 15R forms thereof are know to have useful pharmacological actions even if they are used in a vary small amounts. However, they are extremely unstable and, therefore, considerably difficult in application for routine clinical purposes.In order to remove this difficulty, prostagladin E compounds and 15R forms thereof are formulated into a stable preparation by filling a hard capsule with a solution or a suspension thereof.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: October 3, 1989
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Kohtaro Miwa, Kazuo Igusa, Toshichika Ogasawara