Patents by Inventor Sadao Sotani

Sadao Sotani 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).

  • Sustained-release oral ointment
    Patent number: 5858408
    Abstract: The preent invention relates to a sustained-release oral ointment which comprises a hydrophobic ointment base, an adhesive substance, an aluminum compound and a drug. The ointment is useful as a sustained-release oral ointment which has applicability to an oral mucosa, particularly to a peridontal pocket, sustained-release properties to supply a drug to affected part over a long period of time while maintaining the concentration thereof at a sufficiently high level, and enhanced ratio of utilization of drug (the ratio of the total amount of drug released to affected part to the total amount of drug in the ointment applied).
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: January 12, 1999
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Sadao Sotani, Shosaku Kato, Yasuo Watanabe, Isamu Takakura