Patents by Inventor Susumu Iwasa

Susumu Iwasa 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: 9079972
    Abstract: An insulin resistance marker, a method of evaluating insulin resistance, a method of screening a substance that improves insulin resistance, and a pharmaceutical composition for improving insulin resistance are provided. The insulin resistance marker includes a polypeptide comprising at least any 15 continuous amino acids in the specific amino acid sequence of SEQ ID NO: 1 (sequence of a proepithelin protein). The insulin resistance marker includes a polynucleotide selected from the group consisting of (1) a polynucleotide comprising at least any 45 continuous bases in the base sequence of SEQ ID NO:2 encoding the above specific amino acid sequence, and (2) a polynucleotide that is complementary to the polynucleotide of (1).
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: July 14, 2015
    Assignee: SHIMADZU CORPORATION
    Inventors: Toshiya Matsubara, Osamu Nishimura, Susumu Iwasa, Makoto Watanabe
  • Publication number: 20120149026
    Abstract: It is provided an insulin resistance marker, a method of evaluating insulin resistance, a method of screening a substance that improves insulin resistance, and a pharmaceutical composition for improving insulin resistance. An insulin resistance marker including a polypeptide comprising at least any 15 continuous amino acids in the specific amino acid sequence (sequence of a proepithelin protein). An insulin resistance marker including a polynucleotide selected from the group consisting of a polynucleotide comprising at least any 45 continuous bases in the base sequence encoding the above specific amino acid sequence, and a polynucleotide that is complementary to the polynucleotide.
    Type: Application
    Filed: February 10, 2012
    Publication date: June 14, 2012
    Inventors: Toshiya Matsubara, Osamu Nishimura, Susumu Iwasa, Makoto Watanabe
  • Publication number: 20110104666
    Abstract: It is provided an insulin resistance marker, a method of evaluating insulin resistance, a method of screening a substance that improves insulin resistance, and a pharmaceutical composition for improving insulin resistance. An insulin resistance marker including a polypeptide comprising at least any 15 continuous amino acids in the specific amino acid sequence (sequence of a proepithelin protein). An insulin resistance marker including a polynucleotide selected from the group consisting of a polynucleotide comprising at least any 45 continuous bases in the base sequence encoding the above specific amino acid sequence, and a polynucleotide that is complementary to the polynucleotide.
    Type: Application
    Filed: November 2, 2009
    Publication date: May 5, 2011
    Inventors: Toshiya Matsubara, Osamu NISHIMURA, Susumu Iwasa, Makoto Watanabe
  • Patent number: 6482864
    Abstract: A method for producing a sustained-release preparation, which comprises dispersing a physiologically active polypeptide into an organic solvent solution of a biodegradable polymer and removing the organic solvent, wherein the polypeptide is a powder obtained by lyophilizing an aqueous solution of the polypeptide which solution has a water-miscible organic solvent and/or a volatile salt; which improves the ease of handling of the physiologically active polypeptide powder in the process for producing the preparation; which makes it possible to industrially produce the sustained-release preparation in large scale; which provides a sustained-release preparation showing high and stable concentration of the active component in blood in long term, low initial release ratio of the physiologically active polypeptide, and high entrapment ratio of the polypeptide into the sustained-release preparation.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: November 19, 2002
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yutaka Yamagata, Masafumi Misaki, Susumu Iwasa
  • Patent number: 6429296
    Abstract: The present invention provides a complex of human growth hormone and zinc containing human growth hormone and zinc at a molar ratio of about 1:1.6 to about 1:2.4, and a sustained-release preparation which comprises the complex of human growth hormone and zinc and a biodegradable polymer and which has a high entrapment ratio of human growth hormone and exhibits a stable sustained-release suppressing the initial burst.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: August 6, 2002
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yutaka Yamagata, Masafumi Misaki, Susumu Iwasa
  • Patent number: 6399103
    Abstract: A method of producing sustained-release microcapsules which comprises dispersing a physiologically active polypeptide into a solution of a biodegradable polymer and zinc oxide in an organic solvent, followed by removing the organic solvent; which provides a sustained-release preparation showing a high entrapment ratio of the physiologically active polypeptide and its constant high blood concentration levels over a long period of time.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: June 4, 2002
    Assignee: Takeda Chemical Industries, Inc.
    Inventors: Yutaka Yamagata, Masafumi Misaki, Susumu Iwasa
  • Publication number: 20020037837
    Abstract: The present invention is to provide sustained-release microcapsules which contains high amount of a drug, suppresses initial release and shows stable release, and the production method of which comprises adding a physiologically active substance to biodegradable polymer in an organic solvent containing a fat and oil (in particular, vitamin E) and dispersing and emulsifying the mixture.
    Type: Application
    Filed: October 5, 2001
    Publication date: March 28, 2002
    Inventors: Shigeyuki Takada, Keiko Taira, Susumu Iwasa
  • Patent number: 6319904
    Abstract: The present invention includes a formulation which comprises an antibacterial substance and an antiulcer substance, wherein at least either of them is formulated into a gastrointestinal mucosa-adherent solid preparation. The formulation of the present invention shows long retention time in the gastrointestinal tract because of adhesion to the gastrointestinal tract mucosa, synergetically enhances the pharmaceutical effects of an antibacterial substance, specially antibiotic against Helicobacter pylori (HP) and an antiulcer substance, with very low doses of active ingredients, particularly the anti-HP antibiotic with low prevalence of side effects. The present agent is useful as an antiulcer agent, showing potent anti-HP activity.
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: November 20, 2001
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yohko Akiyama, Masafumi Nakao, Naoki Nagahara, Susumu Iwasa
  • Publication number: 20010027192
    Abstract: The present invention includes a formulation which comprises an antibacterial substance and an antiulcer substance, wherein at least either of them is formulated into a gastrointestinal mucosa-adherent solid preparation. The formulation of the present invention shows long retention time in the gastrointestinal tract because of adhesion to the gastrointestinal tract mucosa, synergetically enhances the pharmaceutical effects of an antibacterial substance, specially antibiotic against Helicobacter pylori (HP) and an antiulcer substance, with very low doses of active ingredients, particularly the anti-HP antibiotic with low prevalence of side effects. The present agent is useful as an antiulcer agent, showing potent anti-HP activity.
    Type: Application
    Filed: May 17, 2001
    Publication date: October 4, 2001
    Inventors: Yohko Akiyama, Masafumi Nakao, Naoki Nagahara, Susumu Iwasa
  • Publication number: 20010006678
    Abstract: Disclosed is a sustained-release preparation characterized in that it is produced by dispersing in an oil phase a rapidly dried product containing a bioactive polypeptide and a surfactant, and subsequent shaping, and a method of its production.
    Type: Application
    Filed: January 19, 2001
    Publication date: July 5, 2001
    Inventors: Shigeyuki Takada, Tomofumi Kurokawa, Susumu Iwasa
  • Publication number: 20010002263
    Abstract: The present invention provides a complex of human growth hormone and zinc containing human growth hormone and zinc at a molar ratio of about 1:1.6 to about 1:2.4, and a sustained-release preparation which comprises the complex of human growth hormone and zinc and a biodegradable polymer and which has a high entrapment ratio of human growth hormone and exhibits a stable sustained-release suppressing the initial burst.
    Type: Application
    Filed: January 23, 2001
    Publication date: May 31, 2001
    Inventors: Yutaka Yamagata, Masafumi Misaki, Susumu Iwasa
  • Patent number: 6197350
    Abstract: A method of producing sustained-release microcapsules which comprises dispersing a physiologically active polypeptide into a solution of a biodegradable polymer and zinc oxide in an organic solvent, followed by removing the organic solvent; which provides a sustained-release preparation showing a high entrapment ratio of the physiologically active polypeptide and its constant high blood concentration levels over a long period of time.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: March 6, 2001
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yutaka Yamagata, Masafumi Misaki, Susumu Iwasa
  • Patent number: 6191107
    Abstract: The present invention provides a complex of human growth hormone and zinc containing human growth hormone and zinc at a molar ratio of about 1:1.6 to about 1:2.4, and a sustained-release preparation which comprises the complex of human growth hormone and zinc and a biodegradable polymer and which has a high entrapment ratio of human growth hormone and exhibits a stable sustained-release suppressing the initial burst.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: February 20, 2001
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yutaka Yamagata, Masafumi Misaki, Susumu Iwasa
  • Patent number: 6190702
    Abstract: A sustained-release preparation containing a bioactive polypeptide is prepared using a starting material containing a lyophilized product of an aqueous solution or suspension of the bioactive polypeptide in a non-ionic surfactant. The lyophilized product is dispersed in an oil phase, which further contains a biocompatible, biodegradable polymer.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: February 20, 2001
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigeyuki Takada, Tomofumi Kurokawa, Susumu Iwasa
  • Patent number: 6190695
    Abstract: This invention provides a pharmaceutical composition comprising a non-peptide osteogenesis-promoting substance and a polyethylene glycol or a derivative thereof, which can be advantageously used as a agent for preventing or treating various bone diseases (e.g., osteoporosis) in view of the high oral absorbability and stability of the active ingredient.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: February 20, 2001
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Tetsuo Hoshino, Kazuhiro Saito, Susumu Iwasa
  • Patent number: 6117455
    Abstract: A sustained-release microcapsule contains an amorphous water-soluble pharmaceutical agent having a particle size of from 1 nm-10 .mu.m and a polymer. The microcapsule is produced by dispersing, in an aqueous phase, a dispersion of from 0.001-90% (w/w) of an amorphous water-soluble pharmaceutical agent in a solution of a polymer having a wt. avg. molecular weight of 2,000-800,000 in an organic solvent to prepare an s/o/w emulsion and subjecting the emulsion to in-water drying.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: September 12, 2000
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigeyuki Takada, Tomofumi Kurokawa, Susumu Iwasa
  • Patent number: 6113941
    Abstract: A pharmaceutical preparation is provided by a microcapsule containing a physiologically active substance which is water-soluble only at a pH of about 3 or below, and a polymer which is biodegradable upon oral administration. A process for producing the microcapsule is also provided.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: September 5, 2000
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigeyuki Takada, Yasushi Nakagawa, Susumu Iwasa
  • Patent number: 5948773
    Abstract: The present invention includes a formulation which comprises an antibacterial substance and an antiulcer substance, wherein at least either of them is formulated into a gastrointestinal mucosa-adherent solid preparation. The formulation of the present invention shows long retention time in the gastrointestinal tract because of adhesion to the gastrointestinal tract mucosa, synergetically enhances the pharmaceutical effects of an antibacterial substance, specially antibiotic against Helicobacter pylori (HP) and an antiulcer substance, with very low doses of active ingredients, particularly the anti-HP antibiotic with low prevalence of side effects. The present agent is useful as an anti ulcer agent, showing potent anti-HP activity.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: September 7, 1999
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yohko Akiyama, Masafumi Nakao, Naoki Nagahara, Susumu Iwasa
  • Patent number: 5910492
    Abstract: This invention provides a pharmaceutical composition comprising a non-peptide osteogenic promoting substance and a biodegradable polymer, which can be safely used as a prophylactic/therapeutic agent for various bone diseases (e.g., bone fractures).
    Type: Grant
    Filed: September 25, 1996
    Date of Patent: June 8, 1999
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Tetsuo Hoshino, Hiroya Muranishi, Shigehisa Taketomi, Susumu Iwasa
  • Patent number: 5876756
    Abstract: A microcapsule contains a pharmaceutically effective amorphous water-soluble 2-piperazinone-1-acetic acid compound or salt thereof and a polymer binder and a method of preparing said microcapsule. The microcapsule is produced by dispersing in an aqueous phase a dispersion of the amorphous water-soluble 2-piperazinone-1-acetic acid compound or salt thereof in a solution of a polymer in an organic solvent to give an s/o/w type emulsion and subjecting the emulsion to in-water drying. The sustained-release microcapsule entraps 2-piperazinone-1-acetic acid compound or the salt thereof, as a drug, in high concentration, and in reducing the initial release of the drug, thereby reducing undesirable side effects of the drug.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: March 2, 1999
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigeyuki Takada, Tomofumi Kurokawa, Susumu Iwasa