Patents by Inventor Katsuya Otomo

Katsuya Otomo 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).

  • Process for producing aspheric seamless capsule and apparatus therefor
    Patent number: 7234290
    Abstract: In manufacturing an aspherical seamless capsule comprises, firstly, a seamless capsule C1 having a filler encapsulated with a shell membrane is provided, then it is dried in a dryer 12 until a predetermined percentage content of solvent in the shell membrane reaches a predetermined value. Subsequently, the seamless capsule is heated by a heater 38 so that the shell material may get to a semi-sol state. Then, the heated seamless capsule is formed into an aspherical shape using a forming machine such as a compression molding machine. Because the spherical seamless capsule has a shell membrane which is dried to get semi-sol so that it may have a reduced elasticity and a shortened stress relaxation time, the capsule can be formed in a short time and suppressed from restoring to the original spherical shape. The semi-sol shell membrane has almost no change in properties, and so allows easiness in temperature control for treatment.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: June 26, 2007
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Takeshi Nakamura, Toshinari Taira, Kenta Wada, Katsuya Otomo
  • Process for producing aspheric seamless capsule and apparatus therefor
    Publication number: 20060096252
    Abstract: In manufacturing an aspherical seamless capsule comprises, firstly, a seamless capsule C1 having a filler encapsulated with a shell membrane is provided, then it is dried in a dryer 12 until a predetermined percentage content of solvent in the shell membrane reaches a predetermined value. Subsequently, the seamless capsule is heated by a heater 38 so that the shell material may get to a semi-sol state. Then, the heated seamless capsule is formed into an aspherical shape using a forming machine such as a compression molding machine. Because the spherical seamless capsule has a shell membrane which is dried to get semi-sol so that it may have a reduced elasticity and a shortened stress relaxation time, the capsule can be formed in a short time and suppressed from restoring to the original spherical shape. The semi-sol shell membrane has almost no change in properties, and so allows easiness in temperature control for treatment.
    Type: Application
    Filed: June 20, 2003
    Publication date: May 11, 2006
    Inventors: Takeshi Nakamura, Toshinari Taira, Kenta Wada, Katsuya Otomo