Patents by Inventor Naoru Hamaguchi

Naoru Hamaguchi 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: 9101660
    Abstract: The present invention provides a solid preparation containing an insulin sensitizer and an active ingredient (except insulin sensitizers), which is useful as a therapeutic drug for diabetes and the like, and which is superior in preparation characteristics such as content uniformity and dissolution property of the insulin sensitizer and the active ingredient (except insulin sensitizers), preparation hardness and the like.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: August 11, 2015
    Assignee: Takeda Pharmaceutical Company
    Inventors: Masahiko Koike, Hiroyoshi Koyama, Naoru Hamaguchi
  • Patent number: 8263121
    Abstract: The present invention provides a solid preparation containing an insulin sensitizer and an active ingredient (except insulin sensitizers), which shows in vivo dissolution behavior of an insulin sensitizer, which is similar to the dissolution behavior of an insulin sensitizer from “a solid preparation containing an insulin sensitizer alone as an active ingredient”. The present invention provides a solid preparation containing (1) a layer containing an insulin sensitizer, and (2) a layer containing (a) an active ingredient (except insulin sensitizers), (b) microcrystalline cellulose having a mean particle size of 5-25 ?m, (c) microcrystalline cellulose having a mean particle size of 30-100 ?m and (d) polyvinylpyrrolidone K-90.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: September 11, 2012
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Masahiko Koike, Hiroyoshi Koyama, Naoru Hamaguchi
  • Patent number: 7976853
    Abstract: The present invention provides a production method of a preparation coated with pioglitazone hydrochloride, which is useful as a therapeutic agent for diabetes and the like, and which is superior in the characteristics of the preparation such as dissolution property of pioglitazone hydrochloride.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: July 12, 2011
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Kazuhiro Ohkouchi, Masahiko Koike, Hiroyoshi Koyama, Naoru Hamaguchi
  • Patent number: 7700128
    Abstract: A solid preparation useful as a diabetes-treating agent or the like and excellent in the dissolution properties of an insulin sensitizer and an insulin secretagogue, which comprises an insulin sensitizer, an insulin secretagogue and a polyoxyethylene sorbitan fatty acid ester is provided.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: April 20, 2010
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Kazuhiro Doken, Tetsuya Kawano, Hiroyoshi Koyama, Naoru Hamaguchi
  • Publication number: 20070082047
    Abstract: A chewable tablet comprising a group which contains an acid-labile active ingredient and at least one basic substance selected from alkaline earth metal carbonate, metal oxide and metal hydroxide, and a group which does not contain an acid-labile active ingredient and contains at least one ingredient selected from alkaline earth metal carbonate, metal oxide and metal hydroxide, wherein said chewable tablet is capable of rapidly neutralizing gastric acid and is preferably not enteric-coated, is provided.
    Type: Application
    Filed: November 4, 2004
    Publication date: April 12, 2007
    Inventors: Masae Sugaya, Hiroyoshi Koyama, Naoru Hamaguchi
  • Publication number: 20060286168
    Abstract: The present invention provides a production method of a preparation coated with pioglitazone hydrochloride, which is useful as a therapeutic agent for diabetes and the like and superior in the characteristics of the preparation such as dissolution property of pioglitazone hydrochloride and the like.
    Type: Application
    Filed: July 10, 2003
    Publication date: December 21, 2006
    Inventors: Masahiko Koike, Hiroyoshi Koyama, Naoru Hamaguchi
  • Publication number: 20060280794
    Abstract: A solid preparation comprising an insulin sensitizer and an HMG-CoA reductase inhibitor without deteriorating the stabilities of these drugs, wherein said preparation comprises particles containing an insulin sensitizer and particles containing an HMG-CoA reductase inhibitor.
    Type: Application
    Filed: June 3, 2004
    Publication date: December 14, 2006
    Inventors: Naoru Hamaguchi, Hiroyoshi Koyama, Masafumi Misaki
  • Publication number: 20060223870
    Abstract: A solid preparation useful as a diabetes-treating agent or the like and excellent in the dissolution properties of an insulin sensitizer and an insulin secretagogue, which comprises an insulin sensitizer, an insulin secretagogue and a polyoxyethylene sorbitan fatty acid ester is provided.
    Type: Application
    Filed: October 21, 2004
    Publication date: October 5, 2006
    Inventors: Kazuhiro Doken, Tetsuya Kawano, Hiroyoshi Koyama, Naoru Hamaguchi
  • Publication number: 20060141128
    Abstract: The present invention provides a production method of a preparation coated with pioglitazone hydrochloride, which is useful as a therapeutic agent for diabetes and the like, and which is superior in the characteristics of the preparation such as dissolution property of pioglitazone hydrochloride.
    Type: Application
    Filed: January 28, 2004
    Publication date: June 29, 2006
    Inventors: Kazuhiro Ohkouchi, Masahiko Koike, Hiroyoshi Koyama, Naoru Hamaguchi
  • Publication number: 20050287207
    Abstract: The present invention provides a solid preparation containing an insulin sensitizer and an active ingredient (except insulin sensitizers), which is useful as a therapeutic drug for diabetes and the like, and which is superior in preparation characteristics such as content uniformity and dissolution property of the insulin sensitizer and the active ingredient (except insulin sensitizers), preparation hardness and the like.
    Type: Application
    Filed: October 6, 2003
    Publication date: December 29, 2005
    Inventors: Masahiko Koike, Hiroyoshi Koyama, Naoru Hamaguchi
  • Patent number: 6568533
    Abstract: An object (7) to be packed is sandwiched between sheet-like package materials (2,2). A weakly-sealed portion (4) is formed so as to surround the packed object (7) while leaving a grip flap (3) for each of the package materials (2,2), thereby forming a bag portion (5) which accommodates the packed object (7) within the weakly-sealed portion (4). The grip flap (3) has a length (L) set to about 20 mm for easy handling. The weakly-sealed portion (4) can be peeled by grasping and pulling the grip flap (3) to take out the packed object (7) within the bag portion (5).
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: May 27, 2003
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Nobuyoshi Tanaka, Naoru Hamaguchi, Shuji Morimoto
  • Patent number: 5888531
    Abstract: A freeze-dried preparation comprising a bioactive substance having an optionally substituted amidino group and a disaccharide which stabilizes the bioactive substance; and a process for making the preparation are described.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: March 30, 1999
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Motoya Ohshika, Naoru Hamaguchi, Shigehiro Higuchi
  • Patent number: 5643564
    Abstract: Disclosed is a sugar-modified cytokine which ensures migration of almost all of the dose of cytokine to the liver rapidly after administration to the live body and which can be advantageously used to enhance the effect of liver disease therapy and mitigate side effects.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: July 1, 1997
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Naoru Hamaguchi, Jun Sato, Kazuhiro Doken
  • Patent number: 5536735
    Abstract: This invention comprises a pharmaceutical composition comprising a benzimidazole compound having antiulcer activity and a water-soluble carboxylic acid amide. According to this invention, a water-insoluble benzimidazole compound having antiulcer activity can be solubilized and a stable pharmaceutical composition can be provided. The solid pharmaceutical composition of this invention can be extemporaneously dissolved in sterile distilled water or an infusion (e.g. physiological saline, glucose infusion, etc.) and put to use as an injection with great convenience.
    Type: Grant
    Filed: October 14, 1994
    Date of Patent: July 16, 1996
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Nobuyuki Takechi, Akihiro Nagai, Naoru Hamaguchi
  • Patent number: 5080904
    Abstract: The liposome compositions entrapping a drug are prepared by constituting the liposomal membrane with a saturated phospholipid and a glycolipid having sulfo group. Thus obtained compositions circulate stably in blood for a long time after intravenous administration.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: January 14, 1992
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Katsumi Iga, Naoru Hamaguchi, Yasuaki Ogawa
  • Patent number: 5019394
    Abstract: The liposome compositions entrapping a drug are prepared by constituting the liposomal membrane with saturated phospholipids and anionic surfactants of high Krafft point at concentrations above their critical micelle concentrations. Thus obtained compositions circulate stably in blood for a long time after intravenous administration.
    Type: Grant
    Filed: February 24, 1988
    Date of Patent: May 28, 1991
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Naoru Hamaguchi, Katsumi Iga, Yasuaki Ogawa
  • Patent number: 5000959
    Abstract: The liposome compositions entrapping a drug are prepared by constituting the liposomal membrane with a saturated phospholipid and a glycolipid having sialic acid group. Thus obtained compositions circulate stably in blood for a long time after intravenous administration.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: March 19, 1991
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Katsumi Iga, Naoru Hamaguchi, Yasuaki Ogawa
  • Patent number: 4877561
    Abstract: Liposomes with an increased drug trap can be prepared by adding a readily volatile organic solvent to a drug-containing liquid with liposomes dispersed therein to cause gel formation and then removing said organic solvent by evaporation.
    Type: Grant
    Filed: April 2, 1987
    Date of Patent: October 31, 1989
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Katsumi Iga, Naoru Hamaguchi, Yasuaki Ogawa
  • Patent number: 4844904
    Abstract: Liposome compositions in which a drug is retained in stable condition are prepared by dispersing liposomes obtained by removal of a solvent from a drug-containing w/o emulsion in an aqueous solution having an osmotic pressure higher by at least 20 percent than the osmotic pressure of a solution used for entrapping the drug in said liposomes. This composition is conducive to a sustained therapeutic efficacy or a better delivery of the drug to a target organ.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: July 4, 1989
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Naoru Hamaguchi, Katsumi Iga, Yasuaki Ogawa
  • Patent number: 4497809
    Abstract: Cephalosporin derivatives of the formula: ##STR1## wherein R.sub.1 is methyl or ethyl and R.sub.2 is a straight-chain or branched alkyl group of 5 to 7 carbon atoms, and their pharmaceutically acceptable salts, which are effective as orally administrable antibiotic agents against both gram-positive- and negative-bacteria, and the production and compositions thereof, are proposed.
    Type: Grant
    Filed: April 20, 1983
    Date of Patent: February 5, 1985
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yoshinobu Yoshimura, Naoru Hamaguchi, Takatsuka Yashiki