Patents by Inventor Takao Shiobara

Takao Shiobara 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).

  • External preparation comprising calcium silicate
    Patent number: 5204119
    Abstract: An external preparation is characterized by comprising calcium silicate. The calcium silicate controls the release rate and percutaneous absorbability of a drug.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: April 20, 1993
    Inventors: Takao Shiobara, Jun Nonaka, Masayoshi Kasai, Takeshi Konita