Patents by Inventor Takahiko Wato

Takahiko Wato 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).

  • Physiologically active polypeptide-containing pharmaceutical composition
    Patent number: 5929027
    Abstract: A pharmaceutical composition comprising a physiologically active polypeptide, an absorption promoting agent consisting of a combination of an organic acid and a fatty acid sucrose ester in admixture with a pharmaceutically acceptable carrier or diluent, which is suitable for oral administration and for application to the oral cavity, by which the polypeptide can sufficiently be absorbed through the intestinal tract or the mucous membrane in the oral cavity and exhibit the physiological activities without being suffered from enzymolysis.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: July 27, 1999
    Assignee: Teikoku Seiyaku Kabushiki Kaisha
    Inventors: Shigeyuki Takama, Yukiko Inamoto, Takahiko Wato, Akiya Yamada, Naoki Uchida, Misuzu Kadoriku
  • Oral pharmaceutical preparation released at infragastrointestinal tract
    Patent number: 5468503
    Abstract: An oral pharmaceutical preparation of a type released at infragastrointestinal tract was successfully prepared, wherein a solid organic acid dissolvable, in the form of a solution, of chitosan and a solid pharmaceutical preparation including a principal agent are filled in a hard capsule composed of the base principally comprising chitosan and an enteric coating is formed on the surface of the hard capsule, characterized in that a desirable releasing time can be arranged, with no pH dependency, via water permeability derived from the porosity of chitosan of the capsule preparation.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: November 21, 1995
    Assignee: Teikoku Seiyaku Kabushiki Kaisha
    Inventors: Akiya Yamada, Takahiko Wato, Naoki Uchida, Misuzu Fujisawa, Shigeyuki Takama, Yukiko Inamoto
  • Preparation for intermittently releasing active agent applicable to oral cavity
    Patent number: 5236713
    Abstract: A preparation for intermittently releasing an active agent which comprises a laminated combination of a release-controlling layer and a pharmaceutically active agent-containing layer wherein one or more of pharmaceutically active agent layers are incorporated into said release-controlling layer. The preparation in accordance with the present invention can intermittently control the release of the active agent to decrease a dosage time and is applicable to the mucous membrane or gingivae within the oral cavity.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: August 17, 1993
    Assignee: Teikoku Seiyaku Kabushiki Kaisha
    Inventors: Takahiko Wato, Teruo Hama, Nobuko Inoue, Yukihiro Tada, Shin-ichi Hisaichi
  • Adhesive device for application to body tissue
    Patent number: 4900554
    Abstract: An adhesive device for application to body tissue having an adhesive layer and a backing layer positioned over one side of the adhesive layer. The adhesive layer includes one or more acrylic acid polymers having adhesive properties upon dissolution or swelling in water, and at least one water insoluble cellulose derivative. The backing layer is water insoluble or sparingly water soluble.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: February 13, 1990
    Assignee: Teikoku Seiyaku Co., Ltd.
    Inventors: Norio Yanagibashi, Setsuo Iwasaki, Takafumi Mizobuchi, Ryoji Konishi, Tatsuya Konishi, Takahiko Wato