Patents by Inventor Yuuki Tsutsui

Yuuki Tsutsui 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).

  • Publication number: 20150306090
    Abstract: In order to provide the medical field with a single formulation comprising a modified release portion containing mirabegron or a pharmaceutically acceptable salt thereof and an immediate release portion containing solifenacin or a pharmaceutically acceptable salt thereof, (1) a single formulation having dissolution rates of both drugs similar to those of the current single drug formulations is provided, and (2) a single formulation having maximum percentages of dissolution of both drugs of 90% or more, and having a bioavailability equivalent to those of the current single drug formulations. Further, in order to provide a single formulation, (3) a single formulation having good productivity whereby failures in tabletting are reduced, and having good storage stability whereby the coloration of the immediate release portion is suppressed is provided.
    Type: Application
    Filed: August 30, 2013
    Publication date: October 29, 2015
    Inventors: YUUKI TSUTSUI, HIROYASU TOYOTA, TADASHI HAKOMORI
  • Patent number: 7923025
    Abstract: The present invention relates to an agent for inhibiting decomposition of a biologically active peptide by a digestive enzyme, which is aminoalkyl methacrylate copolymer E as an effective ingredient, and an agent for reducing viscosity of the gastrointestinal mucosa and mucous layers distributed over this mucosa. The present invention relates to a method for inhibiting decomposition of a biologically active peptide by a digestive enzyme, or a method for reducing viscosity of the gastrointestinal mucosa and/or mucous layers distributed over the mucosa, by administration of aminoalkyl methacrylate copolymer E. Furthermore, the present invention relates to a pharmaceutical composition for oral use with improved absorption, which comprises a biologically active peptide and aminoalkyl methacrylate copolymer E.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: April 12, 2011
    Assignee: Astellas Pharma Inc.
    Inventors: Shunsuke Watanabe, Kiyo Nakanishi, Shigeo Takemura, Yuuki Tsutsui
  • Patent number: 7871644
    Abstract: The present invention presents a pharmaceutical composition for oral use with improved absorption, which comprises drug, aminoalkyl methacrylate copolymer E, and acidic substance and is obtained by bringing said 3 components together and uniformly mixing at least this polymer and this acidic substance, and a method of improving oral absorption/by using this pharmaceutical composition. Moreover, the present invention presents an agent for improving oral absorption that increases drug permeability of the digestive tract mucous membrane and/or mucous layer present on the surface of this membrane, whose active ingredient is aminoalkyl methacrylate copolymer E. In addition, the present invention presents an oral agent for improving absorption by increasing drug permeability of the digestive tract mucous membrane and/or the mucous layer distributed over this mucous membrane, whose effective component is aminoalkyl methacrylate copolymer E.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: January 18, 2011
    Assignee: Astellas Pharma Inc.
    Inventors: Shunsuke Watanabe, Shigeo Takemura, Yuuki Tsutsui, Himoru Kondo, Kiyo Nakanishi, Kazuhiro Sako, Toyohiro Sawada
  • Publication number: 20100221223
    Abstract: The present invention proposes a method of inducing both vaccine antigen-specific antibody in blood and vaccine antigen-specific antibody secreted at the mucosal surface using vaccine antigen and adjuvant of said vaccine antigen.
    Type: Application
    Filed: May 10, 2010
    Publication date: September 2, 2010
    Applicant: Astellas Pharma Inc.
    Inventors: Yuuki Tsutsui, Kiyo Nakanishi, Shunsuke Watanabe, Shigeo Takemura
  • Publication number: 20090239791
    Abstract: A pharmaceutical composition comprising a lipophilic substance which inhibits IL-2 production, and a base capable of inhibiting blood exposure of the substance and delivering the substance to lymph following oral administration, is disclosed. The pharmaceutical composition can inhibit blood exposure of the substance to reduce its adverse effects, and can develop desired pharmacological effects.
    Type: Application
    Filed: October 23, 2008
    Publication date: September 24, 2009
    Applicant: Astellas Pharma Inc.
    Inventors: Takayuki Yoshida, Kiyo Nakanishi, Atsushi Maeda, Kazuhiro Sako, Yuki Kasashima, Hiromu Kondo, Tatsunobu Yoshioka, Yuuki Tsutsui
  • Patent number: 7008640
    Abstract: The present invention presents a pharmaceutical composition for oral use with improved absorption, which comprises drug, aminoalkyl methacrylate copolymer E, and acidic substance and is obtained by bringing said 3 components together and uniformly mixing at least this polymer and this acidic substance, and a method of improving oral absorption by using this pharmaceutical composition. Moreover, the present invention presents an agent for improving oral absorption that increases drug permeability of the digestive tract mucous membrane and/or mucous layer present on the surface of this membrane, whose active ingredient is aminoalkyl methacrylate copolymer E. In addition, the present invention presents an oral agent for improving absorption by increasing drug permeability of the digestive tract mucous membrane and/or the mucous layer distributed over this mucous membrane, whose effective component is aminoalkyl methacrylate copolymer E.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: March 7, 2006
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Shunsuke Watanabe, Shigeo Takemura, Yuuki Tsutsui, Hiromu Kondo, Kiyo Nakanishi, Kazuhiro Sako, Toyohiro Sawada
  • Publication number: 20050112206
    Abstract: The present invention presents a pharmaceutical composition for oral use with improved absorption, which comprises drug, aminoalkyl methacrylate copolymer E, and acidic substance and is obtained by bringing said 3 components together and uniformly mixing at least this polymer and this acidic substance, and a method of improving oral absorption/by using this pharmaceutical composition. Moreover, the present invention presents an agent for improving oral absorption that increases drug permeability of the digestive tract mucous membrane and/or mucous layer present on the surface of this membrane, whose active ingredient is aminoalkyl methacrylate copolymer E. In addition, the present invention presents an oral agent for improving absorption by increasing drug permeability of the digestive tract mucous membrane and/or the mucous layer distributed over this mucous membrane, whose effective component is aminoalkyl methacrylate copolymer E.
    Type: Application
    Filed: September 10, 2004
    Publication date: May 26, 2005
    Applicant: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Shunsuke Watanabe, Shigeo Takemura, Yuuki Tsutsui, Himoru Kondo, Kiyo Nakanishi, Kazuhiro Sako, Toyohiro Sawada
  • Publication number: 20050031587
    Abstract: The present invention proposes a method of inducing both vaccine antigen-specific antibody in blood and vaccine antigen-specific antibody secreted at the mucosal surface using vaccine antigen and adjuvant of said vaccine antigen.
    Type: Application
    Filed: September 29, 2003
    Publication date: February 10, 2005
    Applicant: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Yuuki Tsutsui, Kiyo Nakanishi, Shunsuke Watanabe, Shigeo Takemura
  • Publication number: 20030175351
    Abstract: The present invention relates to an agent for inhibiting decomposition of a biologically active peptide by a digestive enzyme, which is aminoalkyl methacrylate coplolymer E as an effective ingredient, and an agent for reducing viscosity of the gastrointestinal mucosa and mucous layers distributed over this mucosa. The present invention relates to a method for inhibiting decomposition of a biologically active peptide by a digestive enzyme, or a method for reducing viscosity of the gastrointestinal mucosa and/or mucous layers distributed over the mucosa, by administration of aminoalkyl methacrylate copolymer E. Furthermore, the present invention relates to a pharmaceutical composition for oral use with improved absorption, which comprises a biologically active peptide and aminoalkyl methacrylate copolymer E.
    Type: Application
    Filed: January 15, 2003
    Publication date: September 18, 2003
    Applicant: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Shunsuke Watanabe, Kiyo Nakanishi, Shigeo Takemura, Yuuki Tsutsui
  • Publication number: 20020150624
    Abstract: The present invention presents a pharmaceutical composition for oral use with improved absorption, which comprises drug, aminoalkyl methacrylate copolymer E, and acidic substance and is obtained by bringing said 3 components together and uniformly mixing at least this polymer and this acidic substance, and a method of improving oral absorption by using this pharmaceutical composition. Moreover, the present invention presents an agent for improving oral absorption that increases drug permeability of the digestive tract mucous membrane and/or mucous layer present on the surface of this membrane, whose active ingredient is aminoalkyl methacrylate copolymer E. In addition, the present invention presents an oral agent for improving absorption by increasing drug permeability of the digestive tract mucous membrane and/or the mucous layer distributed over this mucous membrane, whose effective component is aminoalkyl methacrylate copolymer E.
    Type: Application
    Filed: July 16, 2001
    Publication date: October 17, 2002
    Inventors: Shunsuke Watanabe, Shigeo Takemura, Yuuki Tsutsui, Hiromu Kondo, Kiyo Nakanishi, Kazuhiro Sako, Toyohiro Sawada