Patents by Inventor Ootaki Hiroshi

Ootaki Hiroshi 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).

  • Patent number: 4218433
    Abstract: A tablet formed with a hollow or hollows in its surface and containing a water-soluble component is coated with a coating agent which is insoluble in water but has water permeability, thereby to obtain a constant-rate eluting medicinal tablet. A process of producing such tablet is also disclosed.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: August 19, 1980
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Yoshida Kooichi, Shozi Eitoshi, Ootaki Hiroshi, Terada Takashi