Patents by Inventor Rinta Ibuki

Rinta Ibuki 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: 8551522
    Abstract: A sustained-release formulation is provided comprising a solid dispersion composition comprising a tricyclic compound or a pharmaceutically acceptable salt thereof in a mixture comprising a water-soluble polymer and a water-insoluble polymer, and an excipient.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: October 8, 2013
    Assignee: Astellas Pharma Inc.
    Inventors: Kazunari Yamashita, Eiji Hashimoto, Yukihiro Nomura, Fumio Shimojo, Shigeki Tamura, Takeo Hirose, Satoshi Ueda, Takashi Saitoh, Rinta Ibuki, Toshio Ideno
  • Publication number: 20090074858
    Abstract: A sustained-release formulation is provided comprising a solid dispersion composition comprising a tricyclic compound or a pharmaceutically acceptable salt thereof in a mixture comprising a water-soluble polymer and a water-insoluble polymer and an excipient.
    Type: Application
    Filed: November 5, 2008
    Publication date: March 19, 2009
    Applicant: ASTELLAS PHARMA INC.
    Inventors: Kazunari YAMASHITA, Eiji HASHIMOTO, Yukihiro NOMURA, Fumio SHIMOJO, Shigeki TAMURA, Takeo HIROSE, Satoshi UEDA, Takashi SAITOH, Rinta IBUKI, Toshio IDENO
  • Publication number: 20050169993
    Abstract: A sustained-release formulation is provided comprising a solid dispersion composition comprising a tricyclic compound or a pharmaceutically acceptable salt thereof in a mixture comprising a water-soluble polymer and a water-insoluble polymer, and an excipient.
    Type: Application
    Filed: February 17, 2005
    Publication date: August 4, 2005
    Applicant: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kazunari Yamashita, Eiji Hashimoto, Yukihiro Nomura, Fumio Shimojo, Shigeki Tamura, Takeo Hirose, Satoshi Ueda, Takashi Saitoh, Rinta Ibuki, Toshio Ideno
  • Patent number: 6884433
    Abstract: Sustained release formulation containing tacrolimus or its hydrate is provided. The time (T63.2%) required for 63.2% of the maximum amount of tacrolimus or its hydrate to be dissolved is 0.7 to 15 hours. The time is measured in accordance to the Japanes Pharmacopocia, the 13-th edition, Dissolution Test, No. 2 (Puddles method, 50 rpm) using an aqueous 0.005% hydroxypropyl cellulose solution. This aqueous test solution is adjusted to pH 4.5, accordingly. The formulation further comprises a solid base which is a water-soluble or water-insoluble polymer. The formulation is in the form of a powder, fine powder, granule, tablet or capsule. The formulation is administered to a patient once a day for preventing organ or tissue rejection by transplantation or autoimmune disease. In addition, a solid dispersion composition is provided. The solid dispersion comprises tacrolimus or its hydrate in a mixture containing water-soluble or water-insoluble polymer and an excipient.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: April 26, 2005
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kazunari Yamashita, Eiji Hashimoto, Yukihiro Nomura, Fumio Shimojo, Shigeki Tamura, Takeo Hirose, Satoshi Ueda, Takashi Saitoh, Rinta Ibuki, Toshio Ideno
  • Patent number: 6673808
    Abstract: To provide a pharmaceutical composition comprising a macrolide compound, such as tricyclic compound (I) or its pharmaceutically acceptable salt, a dissolution/absorption promoter, a pharmaceutical base, and optionally a compatibilizing agent and/or a thickener. It is satisfactory in stability and absorption kinetics and/or a low irritation potential.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: January 6, 2004
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Rinta Ibuki, Fumio Shimojo, Satoshi Ueda, Toshihiko Toyoda, Masayuki Yamanaka, Erika Yoshida
  • Publication number: 20030235614
    Abstract: Providing an oral formulation of a macrolide compound where the dissolution of the macrolide compound is under sustained release; and a sustained-release formulation containing a composition in solid solution, where the macrolide compound is present at an amorphous state in a solid base.
    Type: Application
    Filed: April 14, 2003
    Publication date: December 25, 2003
    Applicant: Fujisawa Pharmaceutical Co. Ltd.
    Inventors: Kazunari Yamashita, Eiji Hashimoto, Yukihiro Nomura, Fumio Shimojo, Shigeki Tamura, Takeo Hirose, Satoshi Ueda, Takashi Saitoh, Rinta Ibuki, Toshio Ideno
  • Patent number: 6586444
    Abstract: To provide a pharmaceutical composition comprising a macrolide compound, such as tricyclic compound (I) or its pharmaceutically acceptable salt, a dissolution/absorption promoter, a pharmaceutical base, and optionally a compatibilizing agent and/or a thickener. It is satisfactory in stability and absorption kinetics and/or a low irritation potential.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: July 1, 2003
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Rinta Ibuki, Fumio Shimojo, Satoshi Ueda, Toshihiko Toyoda, Masayuki Yamanaka, Erika Yoshida
  • Patent number: 6576259
    Abstract: Sustained release formulation containing tacrolimus or its hydrate is provided. The time (T63.2%) required for 63.2% of the maximum amount of tacrolimus or its hydrate to be dissolved is 0.7 to 15 hours. The time is measured in accordance to the Japanese Pharmacopoeia, the 13-th edition, Dissolution Test, No. 2 (Puddle method, 50 rpm) using an aqueous 0.005% hydroxypropyl cellulose solution. This aqueous test solution is adjusted to pH 4.5, accordingly. The formulation further comprise a solid base which is a water-soluble polymer and/or wax. The formulation is in the form of a powder, fine powder, granule, tablet or capsule. Furthermore, the formulation is administered to a patient once a day for preventing organ or tissue rejection by transplantation or autoimmune diseases.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: June 10, 2003
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kazunari Yamashita, Eiji Hashimoto, Yukihiro Nomura, Fumio Shimojo, Shigeki Tamura, Takeo Hirose, Satoshi Ueda, Takashi Saitoh, Rinta Ibuki, Toshio Ideno
  • Patent number: 6440458
    Abstract: Providing an oral formulation of a macrolide compound where the dissolution of the macrolide compound is under sustained release; and a sustained-release formulation containing a composition in solid solution, where the macrolide compound is present at an amorphous state in a solid base.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: August 27, 2002
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Kazunari Yamashita, Eiji Hashimoto, Yukihiro Nomura, Fumio Shimojo, Shigeki Tamura, Takeo Hirose, Satoshi Ueda, Takashi Saitoh, Rinta Ibuki, Toshio Ideno
  • Publication number: 20020061907
    Abstract: To provide a pharmaceutical composition comprising a macrolide compound, such as tricyclic compound (I) or its pharmaceutically acceptable salt, a dissolution/absorption promoter, a pharmaceutical base, and optionally a compatibilizing agent and/or a thickener. It is satisfactory in stability and absorption kinetics and/or a low irritation potential.
    Type: Application
    Filed: December 7, 2001
    Publication date: May 23, 2002
    Applicant: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Rinta Ibuki, Fumio Shimojo, Satoshi Ueda, Toshihiko Toyoda, Masayuki Yamanaka, Erika Yoshida
  • Patent number: 6387918
    Abstract: A pharmaceutical composition comprising a tricyclic compound (I) or its pharmaceutically acceptable salt, an oil substance, a surfactant, a hydrophilic substance, water, and optionally a pH control agent, with enhanced stability, absorbability and/or a low irritation potential, is provided.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: May 14, 2002
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Masayuki Yamanaka, Fumio Shimojo, Satoshi Ueda, Toshihiko Toyoda, Rinta Ibuki, Norio Ohnishi
  • Publication number: 20020044967
    Abstract: Providing an oral formulation of a macrolide compound where the dissolution of the macrolide compound is under sustained release; and a sustained-release formulation containing a composition in solid solution, where the macrolide compound is present at an amorphous state in a solid base.
    Type: Application
    Filed: October 17, 2001
    Publication date: April 18, 2002
    Applicant: FUJISAWA PHARMACEUTICAL CO., LTD.
    Inventors: Kazunari Yamashita, Eiji Hashimoto, Yukihiro Nomura, Fumio Shimojo, Shigeki Tamura, Takeo Hirose, Satoshi Ueda, Takashi Saitoh, Rinta Ibuki, Toshio Ideno
  • Publication number: 20020032212
    Abstract: A pharmaceutical composition comprising a tricyclic compound (I) or its pharmaceutically acceptable salt, an oil substance, a surfactant, a hydrophilic substance, water, and optionally a pH control agent, with enhanced stability, absorbability and/or a low irritation potential, is provided.
    Type: Application
    Filed: August 20, 1999
    Publication date: March 14, 2002
    Inventors: MASAYUKI YAMANAKA, FUMIO SHIMOJO, SATOSHI UEDA, TOSHIHIKO TOYODA, RINTA IBUKI, NORIO OHNISHI
  • Patent number: 6316473
    Abstract: Provided is a medicinal composition having a very satisfactory drug release profile and a very satisfactory drug absorption profile after oral administration characterized by its comprising an insoluble drug and two or more surfactants, at least one of the surfactants having as dissolved therein the insoluble drug and the other surfactant or surfactants.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: November 13, 2001
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Fumio Shimojo, Sumihisa Kimura, Takeo Hirose, Satoshi Ueda, Rinta Ibuki, Norio Ohnishi
  • Patent number: 5045553
    Abstract: The present invention relates to a pharmaceutical composition for percutaneous drug absorption which comprises 5-isopropyl 3-methyl 2-cyano-6-methyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate, and ethanol and/or an unsaturated higher fatty acid and to a composition of matter which comprises ethanol and/or an unsaturated higher fatty acid and is capable of promoting percutaneous absorption of said dihydropyridine compound.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: September 3, 1991
    Assignee: Fujisawa Pharmaceutical Company, Ltd.
    Inventors: Yoshio Ueda, Takehisa Hata, Rinta Ibuki, Kazutake Kado, Hiroshi Ishikuro
  • Patent number: 4390694
    Abstract: A method for preparing stable crystals of a salt of Ceftizoxime which comprises mixing an aqueous solution of a salt of Ceftizoxime and isopropyl alcohol and collecting the precipitating crystals. Crystals obtained in this manner are more stable than the crystals obtained from prior art methods involving mixed solvents of water and ethanol.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: June 28, 1983
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Norio Ohnishi, Rinta Ibuki