Patents by Inventor Ryoji Yoshii

Ryoji Yoshii 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: 9381248
    Abstract: A coating agent for a pharmaceutical solid preparation imparts an unpackaged pharmaceutical solid preparation with excellent barrier properties equivalent to those of a PTP sheet without affecting the disintegration properties of the pharmaceutical solid preparation. The coating agent for a pharmaceutical solid preparation includes a polyethylene glycol having an average molecular weight of 950 to 25,000 and a swelling clay, wherein the mass ratio of the polyethylene glycol and the swelling clay is 2:8 to 6:4.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: July 5, 2016
    Assignee: Toray Industries, Inc.
    Inventors: Yuki Fujisaki, Ryoji Yoshii, Suguru Takaki
  • Patent number: 8980320
    Abstract: A film coating agent for a solid formulation includes a water-soluble cellulose derivative, swelling clay, a cationic surfactant, and a fatty acid, wherein mass ratio of the swelling clay to the water-soluble cellulose derivative is 2:8 to 8:2, and content of the cationic surfactant is not less than 0.5 equivalents and not more than 3.0 equivalents relative to a cation exchange equivalent of the swelling clay.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: March 17, 2015
    Assignee: Toray Industries, Inc.
    Inventors: Ryoji Yoshii, Yuki Hayashi, Yuki Fujisaki
  • Patent number: 8920818
    Abstract: A coating material for a solid formulation is capable of stably retaining the effective ingredient in the solid formulation for a prolonged period even in unpacked condition in such a manner that the solid formulation can be used in a single-dose formulation. The coating material for a solid formulation includes a high hydrogen-bonding resin and a swelling clay and, when coated on a solid formulation and dried, forms a coating film in which the laminated structures of the aforementioned swelling clay are oriented planarly and dispersed in a network fashion.
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: December 30, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Yuki Hayashi, Yuki Fujisaki, Ryoji Yoshii
  • Patent number: 8900606
    Abstract: A method improves stability of drugs in a solid pharmaceutical formulation against oxygen and water vapor by coating the solid pharmaceutical formulation with a coating material including a high hydrogen-bonding resin and a swelling clay.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 2, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Yuki Hayashi, Yuki Fujisaki, Ryoji Yoshii
  • Patent number: 8658208
    Abstract: A montelukast-containing coated solid preparation can be applied to one-dose package, wherein the humidity stability of montelukast or a pharmacologically acceptable salt thereof contained therein is maintained even when the preparation is unpacked. A coated solid preparation contains as an active ingredient montelukast or a pharmacologically acceptable salt thereof and is coated with a coating layer comprising polyvinyl alcohol and swelling clay, wherein the mass ratio of the above-described polyvinyl alcohol to the above-described swelling clay in the above-described coating layer is 8:2 to 3:7.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: February 25, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Yuki Fujisaki, Ryoji Yoshii, Yasuhide Horiuchi
  • Patent number: 8652521
    Abstract: A coated solid preparation includes an active ingredient including valproic acid or a pharmacologically acceptable salt thereof, and a coating layer containing polyvinyl alcohol and swelling clay coating the active ingredient wherein mass ratio of the polyvinyl alcohol to the swelling clay is 8:2 to 3:7 and the swelling clay is dispersed as a laminated structure.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: February 18, 2014
    Assignee: Toray Industries, Inc.
    Inventors: Yuki Hayashi, Ryoji Yoshii, Yasuhide Horiuchi
  • Publication number: 20130156829
    Abstract: A coating agent for a pharmaceutical solid preparation imparts an unpackaged pharmaceutical solid preparation with excellent barrier properties equivalent to those of a PTP sheet without affecting the disintegration properties of the pharmaceutical solid preparation. The coating agent for a pharmaceutical solid preparation includes a polyethylene glycol having an average molecular weight of 950 to 25,000 and a swelling clay, wherein the mass ratio of the polyethylene glycol and the swelling clay is 2:8 to 6:4.
    Type: Application
    Filed: August 31, 2011
    Publication date: June 20, 2013
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Yuki Fujisaki, Ryoji Yoshii, Suguru Takaki
  • Publication number: 20120321677
    Abstract: A montelukast-containing coated solid preparation can be applied to one-dose package, wherein the humidity stability of montelukast or a pharmacologically acceptable salt thereof contained therein is maintained even when the preparation is unpacked. A coated solid preparation contains as an active ingredient montelukast or a pharmacologically acceptable salt thereof and is coated with a coating layer comprising polyvinyl alcohol and swelling clay, wherein the mass ratio of the above-described polyvinyl alcohol to the above-described swelling clay in the above-described coating layer is 8:2 to 3:7.
    Type: Application
    Filed: February 25, 2011
    Publication date: December 20, 2012
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Yuki Fujisaki, Ryoji Yoshii, Yasuhide Horiuchi
  • Publication number: 20120237575
    Abstract: A film coating agent for a solid formulation includes a water-soluble cellulose derivative, swelling clay, a cationic surfactant, and a fatty acid, wherein mass ratio of the swelling clay to the water-soluble cellulose derivative is 2:8 to 8:2, and content of the cationic surfactant is not less than 0.5 equivalents and not more than 3.0 equivalents relative to a cation exchange equivalent of the swelling clay.
    Type: Application
    Filed: November 30, 2010
    Publication date: September 20, 2012
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Ryoji Yoshii, Yuki Hayashi, Yuki Fujisaki
  • Publication number: 20110305756
    Abstract: A coated solid preparation includes an active ingredient including valproic acid or a pharmacologically acceptable salt thereof, and a coating layer containing polyvinyl alcohol and swelling clay coating the active ingredient wherein mass ratio of the polyvinyl alcohol to the swelling clay is 8:2 to 3:7 and the swelling clay is dispersed as a laminated structure.
    Type: Application
    Filed: March 3, 2010
    Publication date: December 15, 2011
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Yuki Hayashi, Ryoji Yoshii, Yasuhide Horiuchi
  • Publication number: 20110256189
    Abstract: A coating material for a solid formulation is capable of stably retaining the effective ingredient in the solid formulation for a prolonged period even in unpacked condition in such a manner that the solid formulation can be used in a single-dose formulation. The coating material for a solid formulation includes a high hydrogen-bonding resin and a swelling clay and, when coated on a solid formulation and dried, forms a coating film in which the laminated structures of the aforementioned swelling clay are oriented planarly and dispersed in a network fashion.
    Type: Application
    Filed: December 25, 2009
    Publication date: October 20, 2011
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Yuki Hayashi, Yuki Fujisaki, Ryoji Yoshii
  • Publication number: 20060233724
    Abstract: A pharmaceutical composition for being administered to periodontal pockets, comprising as an effective ingredient a bisphosphonic acid derivative, which has an excellent sustained-release property when locally administered, is disclosed. The pharmaceutical composition for being administered to periodontal pockets according to the present invention comprises a bisphosphonic acid derivative or a salt thereof, and a base which undergoes liquid-gel phase transition upon contacting with physiological body fluid in the periodontal pocket.
    Type: Application
    Filed: August 28, 2003
    Publication date: October 19, 2006
    Applicant: Toray Industries, Inc.
    Inventors: Ryoji Yoshii, Takao Aoki
  • Patent number: 6372755
    Abstract: A stable pharmaceutical composition includes a 4,5-epoxy-morphinan derivative, and includes at least one of the group consisting of a water soluble antioxidant, a fat soluble antioxidant, a synergist, a sugar, and a surfactant.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: April 16, 2002
    Assignee: Toray Industries, Inc.
    Inventors: Nobuyuki Hanamura, Yasuhide Horiuchi, Ryoji Yoshii, Takao Aoki, Michio Hara
  • Publication number: 20010004637
    Abstract: A stable pharmaceutical composition includes a 4,5-epoxy-morphinan derivative, and includes at least one of the group consisting of a water soluble antioxidant, a fat soluble antioxidant, a synergist, a sugar, and a surfactant.
    Type: Application
    Filed: April 19, 1999
    Publication date: June 21, 2001
    Inventors: NOBUYUKI HANAMURA, YASUHIDE HORIUCHI, RYOJI YOSHII, TAKAO AOKI, MICHIO HARA