Patents by Inventor Hisaya Sangawa

Hisaya Sangawa 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 production of spherical microparticles comprising tamsulosin hydrochloride
    Patent number: 8529953
    Abstract: The present invention provides a method for producing spherical fine particles containing tamsulosin hydrochloride, the method includes the steps of: (1) mixing and stirring tamsulosin hydrochloride (a), microcrystalline cellulose (b), and water until a mixture of the component (a) and the component (b) is uniformly impregnated with the water; (2) granulating the mixture obtained in step (1) using an stirring granulator whose peripheral speed is set to be 5.5 to 9.0 m/s; and (3) drying the granules obtained in step (2). The present invention also provides spherical fine particles obtained according to the method, coated fine particles obtained by applying a coating to the spherical fine particles, and an orally disintegrating tablet containing the coated fine particles.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: September 10, 2013
    Assignee: Sawai Pharmaceutical Co., Ltd.
    Inventors: Toshihiro Yanagi, Yoshitaka Iwakura, Hisaya Sangawa, Yasufumi Okamura
  • PROCESS FOR PRODUCTION OF SPHERICAL MICROPARTICLES COMPRISING TAMSULOSIN HYDROCHLORIDE
    Publication number: 20110104270
    Abstract: The present invention provides a method for producing spherical fine particles containing tamsulosin hydrochloride, the method includes the steps of: (1) mixing and stirring tamsulosin hydrochloride (a), microcrystalline cellulose (b), and water until a mixture of the component (a) and the component (b) is uniformly impregnated with the water; (2) granulating the mixture obtained in step (1) using an stirring granulator whose peripheral speed is set to be 5.5 to 9.0 m/s; and (3) drying the granules obtained in step (2). The present invention also provides spherical fine particles obtained according to the method, coated fine particles obtained by applying a coating to the spherical fine particles, and an orally disintegrating tablet containing the coated fine particles.
    Type: Application
    Filed: June 29, 2009
    Publication date: May 5, 2011
    Applicant: SAWAI PHARMACEUTICAL CO., LTD.
    Inventors: Toshihiro Yanagi, Yoshitaka Iwakura, Hisaya Sangawa, Yasufumi Okamura