Patents by Inventor Shiegeji Sato

Shiegeji Sato 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).

  • Long-term sustained-release preparation
    Patent number: 4774091
    Abstract: A solid sustained-release preparation in the form of a needle-like or bar-like shape, which consists essentially of an active ingredient and a pharmaceutically acceptable biodegradable carrier (e.g. proteins, preferably collagen, gelatin, and a mixture thereof). The sustained-release preparation can be administered to the body or implanted into the body by injection or an injection-like method and can release the active ingredient at an effective level for a long period of time when administered.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: September 27, 1988
    Assignee: Sumitomo Pharmaceuticals Company, Ltd.
    Inventors: Yoshiya Yamahira, Keiji Fujioka, Shiegeji Sato, Yoshihiro Takada