Patents by Inventor Kazumichi Yamamoto

Kazumichi Yamamoto 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: 8900638
    Abstract: The present invention provides a solid preparation containing compound (I) [compound (I) is as defined in the specification] or a salt thereof, and metformin hydrochloride, which is useful as a therapeutic drug for diabetes and the like, and superior in the preservation stability. A solid preparation having a first part and a second part: a first part: a part containing compound (I) or a salt thereof and substantially free of metformin hydrochloride a second part: a part containing metformin hydrochloride and substantially free of compound (I) and a salt thereof.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: December 2, 2014
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Kazumichi Yamamoto, Hiroyoshi Koyama
  • Patent number: 8815801
    Abstract: A controlled release composition containing a physiologically active substance in high content, suppressing the initial excess release, and achieving a stable release speed over a long period of time is provided. A controlled release composition comprising (1) a physiologically active substance or salt thereof in an amount of about 14% (w/w) to about 24% (w/w) based on the total composition weight, (2) hydroxynaphthoic acid selected from the group consisting of 3-hydroxy-2-naphthoic acid and 1-hydroxy-2-naphthoic acid or salt thereof, and (3) a lactic acid polymer or salt thereof having a weight-average molecular weight of 15000 to 50000 in which the content of polymers having molecular weights of 5000 or less is about 5% by weight or less, wherein the molar ratio of said hydroxynaphthoic acid or salt thereof to said physiologically active substance or salt thereof is from 3:4 to 4:3.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: August 26, 2014
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Kazumichi Yamamoto, Akiko Yamada, Yoshio Hata
  • Publication number: 20140205672
    Abstract: A controlled release composition for oral administration, which comprises a physiologically active substance which is a compound represented by the formula: wherein n is an integer of 1 to 3, and Ar is an aromatic ring which may be substituted, or a salt thereof, and a hydrophilic polymer, or a controlled release composition for oral administration, wherein a core containing the physiologically active substance is coated with a coating layer containing a polymer, is provided.
    Type: Application
    Filed: January 17, 2014
    Publication date: July 24, 2014
    Applicant: TAKEDA PHARMACEUTICAL COMPANY LIMITED
    Inventors: Shigeo Yanai, Kazumichi Yamamoto
  • Publication number: 20120295848
    Abstract: Present invention is to provide a sustained-release composition which contains a physiologically active substance in high content even when gelatin is not included, and suppresses its initial excessive release and, thus, can achieve a stable release rate over about one month. A sustained-release composition containing a lactic acid-glycolic acid polymer having a ratio or weight average molecular weight and number average molecular weight of about 1.90 or lower, or a salt thereof, and a physiologically active substance.
    Type: Application
    Filed: August 2, 2012
    Publication date: November 22, 2012
    Inventors: Kazumichi Yamamoto, Akiko YAMADA, Yoshio HATA
  • Publication number: 20120283187
    Abstract: A controlled release composition containing a physiologically active substance in high content, suppressing the initial excess release, and achieving a stable release speed over a long period of time is provided. A controlled release composition comprising (1) a physiologically active substance or salt thereof in an amount of about 14% (w/w) to about 24% (w/w) based on the total composition weight, (2) hydroxynaphthoic acid selected from the group consisting of 3-hydroxy-2-naphthoic acid and 1-hydroxy-2-naphthoic acid or salt thereof, and (3) a lactic acid polymer or salt thereof having a weight-average molecular weight of 15000 to 50000 in which the content of polymers having molecular weights of 5000 or less is about 5% by weight or less, wherein the molar ratio of said hydroxynaphthoic acid or salt thereof to said physiologically active substance or salt thereof is from 3:4 to 4:3.
    Type: Application
    Filed: July 13, 2012
    Publication date: November 8, 2012
    Inventors: Kazumichi Yamamoto, Akiko Yamada, Yoshio Hata
  • Patent number: 8246987
    Abstract: A controlled release composition containing a physiologically active substance in high content, suppressing the initial excess release, and achieving a stable release speed over a long period of time is provided. A controlled release composition comprising (1) a physiologically active substance or salt thereof in an amount of about 14% (w/w) to about 24% (w/w) based on the total composition weight, (2) hydroxynaphthoic acid selected from the group consisting of 3-hydroxy-2-naphthoic acid and 1-hydroxy-2-naphthoic acid or salt thereof, and (3) a lactic acid polymer or salt thereof having a weight-average molecular weight of 15000 to 50000 in which the content of polymers having molecular weights of 5000 or less is about 5% by weight or less, wherein the molar ratio of said hydroxynaphthoic acid or salt thereof to said physiologically active substance or salt thereof is from 3:4 to 4:3.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: August 21, 2012
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Kazumichi Yamamoto, Akiko Yamada, Yoshio Hata
  • Patent number: 8088726
    Abstract: A process for producing a sustained-release composition which comprises mixing an aqueous solution containing a physiologically active substance and an acid or base in a molar amount of 1.5 or more times that of the physiologically active substance with a solution of a biodegradable polymer and then drying the mixture is provided.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: January 3, 2012
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Kazumichi Yamamoto, Kazuhiro Saito, Tetsuo Hoshino
  • Patent number: 8067030
    Abstract: A controlled release composition containing a physiologically active substance in high content, suppressing the initial excess release, and achieving a stable release speed over a long period of time is provided. A controlled release composition comprising (1) a physiologically active substance or salt thereof in an amount of about 14% (w/w) to about 24% (w/w) based on the total composition weight, (2) hydroxynaphthoic acid selected from the group consisting of 3-hydroxy-2-naphthoic acid and 1-hydroxy-2-naphthoic acid or salt thereof, and (3) a lactic acid polymer or salt thereof having a weight-average molecular weight of 15000 to 50000 in which the content of polymers having molecular weights of 5000 or less is about 5% by weight or less, wherein the molar ratio of said hydroxynaphthoic acid or salt thereof to said physiologically active substance or salt thereof is from 3:4 to 4:3.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: November 29, 2011
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Kazumichi Yamamoto, Akiko Yamada, Yoshio Hata
  • Publication number: 20110166084
    Abstract: A controlled release composition containing a physiologically active substance in high content, suppressing the initial excess release, and achieving a stable release speed over a long period of time is provided. A controlled release composition comprising (1) a physiologically active substance or salt thereof in an amount of about 14% (w/w) to about 24% (w/w) based on the total composition weight, (2) hydroxynaphthoic acid selected from the group consisting of 3-hydroxy-2-naphthoic acid and 1-hydroxy-2-naphthoic acid or salt thereof, and (3) a lactic acid polymer or salt thereof having a weight-average molecular weight of 15000 to 50000 in which the content of polymers having molecular weights of 5000 or less is about 5% by weight or less, wherein the molar ratio of said hydroxynaphthoic acid or salt thereof to said physiologically active substance or salt thereof is from 3:4 to 4:3.
    Type: Application
    Filed: March 16, 2011
    Publication date: July 7, 2011
    Inventors: Kazumichi Yamamoto, Akiko Yamada, Yoshio Hata
  • Publication number: 20110014299
    Abstract: The present invention provides a solid preparation containing compound (I) [compound (I) is as defined in the specification] or a salt thereof, and metformin hydrochloride, which is useful as a therapeutic drug for diabetes and the like, and superior in the preservation stability. A solid preparation having a first part and a second part: a first part: a part containing compound (I) or a salt thereof and substantially free of metformin hydrochloride a second part: a part containing metformin hydrochloride and substantially free of compound (I) and a salt thereof.
    Type: Application
    Filed: July 16, 2008
    Publication date: January 20, 2011
    Applicant: Takeda Pharmaceutical Company Limited
    Inventors: Kazumichi Yamamoto, Hiroyoshi Koyama
  • Publication number: 20100136127
    Abstract: The present invention provides a solid preparation containing compound (I) [compound (I) is as defined in the specification] or a salt thereof, and metformin hydrochloride, which is useful as a therapeutic drug for diabetes and the like, and superior in the preservation stability. A solid preparation having a first part and a second part: a first part: a part containing compound (I) or a salt thereof and substantially free of metformin hydrochloride a second part: a part containing metformin hydrochloride and substantially free of compound (I) and a salt thereof.
    Type: Application
    Filed: July 16, 2008
    Publication date: June 3, 2010
    Inventors: Kazumichi Yamamoto, Hiroyoshi Koyama
  • Patent number: 7480445
    Abstract: Within a television broadcast recording/reproducing apparatus, for preventing a commercial message (CM) from being cut when viewing an abridgement (digest), and for presenting the CM to a viewer without losing an advantage of viewing the abridgement, a ranking value of a CM portion is changed, with using a means for evaluating video and audio by one (1) frame thereof, thereby to give a ranking value thereto, and a means for detecting a CM portion.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: January 20, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Kazumichi Yamamoto, Yukio Fujii
  • Publication number: 20090005318
    Abstract: A controlled release composition containing a physiologically active substance in high content, suppressing the initial excess release, and achieving a stable release speed over a long period of time is provided. A controlled release composition comprising (1) a physiologically active substance or salt thereof in an amount of about 14% (w/w) to about 24% (w/w) based on the total composition weight, (2) hydroxynaphthoic acid selected from the group consisting of 3-hydroxy-2-naphthoic acid and 1-hydroxy-2-naphthoic acid or salt thereof, and (3) a lactic acid polymer or salt thereof having a weight-average molecular weight of 15000 to 50000 in which the content of polymers having molecular weights of 5000 or less is about 5% by weight or less, wherein the molar ratio of said hydroxynaphthoic acid or salt thereof to said physiologically active substance or salt thereof is from 3:4 to 4:3.
    Type: Application
    Filed: July 29, 2008
    Publication date: January 1, 2009
    Inventors: Kazumichi Yamamoto, Akiko Yamada, Yoshio Hata
  • Patent number: 7429559
    Abstract: A controlled release composition containing a physiologically active substance in high content, suppressing the initial excess release, and achieving a stable release speed over a long period of time is provided. A controlled release composition comprising (1) a physiologically active substance or salt thereof in an amount of about 14% (w/w) to about 24% (w/w) based on the total composition weight, (2) hydroxynaphthoic acid selected from the group consisting of 3-hydroxy-2-naphthoic acid and 1-hydroxy-2-naphthoic acid or salt thereof, and (3) a lactic acid polymer or salt thereof having a weight-average molecular weight of 15000 to 50000 in which the content of polymers having molecular weights of 5000 or less is about 5% by weight or less, wherein the molar ratio of said hydroxynaphthoic acid or salt thereof to said physiologically active substance or salt thereof is from 3:4 to 4:3.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: September 30, 2008
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Kazumichi Yamamoto, Akiko Yamada, Yoshio Hata
  • Patent number: 7388032
    Abstract: A sustained-release composition containing a hydroxynaphthoic acid salt of a biologically active substance and a biodegradable polymer, a method of its production, and a pharmaceutical composition containing said sustained-release composition.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: June 17, 2008
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Akira Saikawa, Yasutaka Igari, Yoshio Hata, Kazumichi Yamamoto
  • Publication number: 20080014237
    Abstract: Sustained release compositions containing a physiologically active substance or its salt, hydroxynaphthoic acid or its salt and a lactic acid-glycolic polymer or its salt, wherein the product of the weight-average molecular weight of the lactic acid-glycolic acid polymer by the amount (?mol) of the terminal carboxyl group per unit mass (g) of the lactic acid-glycolic acid polymer is from 1,200,000 to 3,000,000 (inclusive); and their production; medicaments containing these sustained release compositions, etc.
    Type: Application
    Filed: July 25, 2007
    Publication date: January 17, 2008
    Inventors: Yasutaka Igari, Yoshio Hata, Kazumichi Yamamoto
  • Patent number: 7265157
    Abstract: Sustained release compositions containing a physiologically active substance or its salt, hydroxynaphthoic acid or its salt and a lactic acid-glycolic polymer or its salt, wherein the product of the weight-average molecular weight of the lactic acid-glycolic acid polymer by the amount (?mol) of the terminal carboxyl group per unit mass (g) of the lactic acid-glycolic acid polymer is from 1,200,000 to 3,000,000 (inclusive); and their production; medicaments containing these sustained release compositions, etc.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: September 4, 2007
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Yasutaka Igari, Yoshio Hata, Kazumichi Yamamoto
  • Publication number: 20070154178
    Abstract: Within a television broadcast recording/reproducing apparatus, for preventing a commercial message (CM) from being cut when viewing an abridgement (digest), and for presenting the CM to a viewer without losing an advantage of viewing the abridgement, a ranking value of a CM portion is changed, with using a means for evaluating video and audio by one (1) frame thereof, thereby to give a ranking value thereto, and a means for detecting a CM portion.
    Type: Application
    Filed: December 13, 2006
    Publication date: July 5, 2007
    Inventors: Kazumichi Yamamoto, Yokio Fujii
  • Publication number: 20060177506
    Abstract: A controlled release composition for oral administration, which comprises a physiologically active substance which is a compound represented by the formula: wherein n is an integer of 1 to 3, and Ar is an aromatic ring which may be substituted, or a salt thereof, and a hydrophilic polymer, or a controlled release composition for oral administration, wherein a core containing the physiologically active substance is coated with a coating layer containing a polymer, is provided.
    Type: Application
    Filed: March 16, 2004
    Publication date: August 10, 2006
    Inventors: Shigeo Yanai, Kazumichi Yamamoto
  • Publication number: 20050214330
    Abstract: A process for producing a sustained-release composition which comprises mixing an aqueous solution containing a physiologically active substance and an acid or base in a molar amount of 1.5 or more times that of the physiologically active substance with a solution of a biodegradable polymer and then drying the mixture is provided.
    Type: Application
    Filed: June 24, 2003
    Publication date: September 29, 2005
    Inventors: Kazumichi Yamamoto, Kazuhiro Saito, Tetsuo Hoshino