Patents by Inventor Shigeru Kamei

Shigeru Kamei 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: 20090048180
    Abstract: A sustained-release preparation which comprises a physiologically active peptide of general formula wherein X represents an acyl group; R1, R2 and R4 each represents an aromatic cyclic group; R3 represents a D-amino acid residue or a group of the formula wherein R3? is a heterocyclic group; R5 represents a group of the formula —(CH2)n—R5? wherein n is 2 or 3, and R5? is an amino group which may optionally be substituted, an aromatic cyclic group or an O-glycosyl group; R6 represents a group of the formula —(CH2)n—R6? wherein n is 2 or 3, and R6? is an amino group which may optionally be substituted; R7 represents a D-amino acid residue or an azaglycyl residue; and Q represents hydrogen or a lower alkyl group, or a salt thereof and a biodegradable polymer having a terminal carboxyl group. The sustained-release preparation shows a constant release of the peptide over a long time and is substantially free from an initial burst.
    Type: Application
    Filed: October 7, 2008
    Publication date: February 19, 2009
    Inventors: Shigeru Kamei, Yasutaka Igari, Yasuaki Ogawa
  • Publication number: 20080207524
    Abstract: Medicinal preparations for treating sex hormone-dependent diseases which comprise a combination of a compound having a luteinizing hormone-releasing hormone agonistic effect or its salt with a compound having a luteinizing hormone-releasing hormone antagonistic effect or its salt for administering the compound having a luteinizing hormone-releasing hormone agonistic effect or its salt followed by the compound having a luteinizing hormone-releasing hormone antagonistic effect or its salt. By using these preparations, the concentration of a sex hormone (for example, testosterone, LH, FSH, estrogen) can be quickly recovered after the medicable period of a compound having a luteinizing hormone-releasing hormone antagonistic effect or its salt or a preparation containing the same (preferably a sustained-release preparation), which makes it possible to definitely determine the drug cessation period in an intermittent treatment.
    Type: Application
    Filed: November 16, 2007
    Publication date: August 28, 2008
    Inventors: Yasutaka Igari, Shigeru Kamei
  • Patent number: 7294344
    Abstract: The present invention is to provide a sustained-release preparation which comprises a compound having angiotensin II antagonistic activity, its pro-drug or their salt, and a biodegradable polymer, and if necessary, a polyvalent metal, and which is highly stable and active and shows angiotensin II antagonistic activity while maintaining circadian rhythm of blood pressure for a long time.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: November 13, 2007
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Yasutaka Igari, Akira Saikawa, Yoshiyuki Inada, Shigeru Kamei
  • Patent number: 7048947
    Abstract: A sustained-release preparation which comprises a physiologically active peptide of general formula wherein X represents an acyl group; R1, R2 and R4 each represents an aromatic cyclic group; R3 represents a D-amino acid residue or a group of the formula wherein R3? is a heterocyclic group; R5 represents a group of the formula —(CH2)n—R5? wherein n is 2 or 3, and R5? is an amino group which may optionally be substituted, an aromatic cyclic group or an O-glycosyl group; R6 represents a group of the formula —(CH2)n—R6? wherein n is 2 or 3, and R6? is an amino group which may optionally be substituted; R7 represents a D-amino acid residue or an azaglycyl residue; and Q represents hydrogen or a lower alkyl group, or a salt thereof and a biodegradable polymer having a terminal carboxyl group. The sustained-release preparation shows a constant release of the peptide over a long time and is substantially free from an initial burst.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: May 23, 2006
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Shigeru Kamei, Yasutaka Igari, Yasuaki Ogawa
  • Patent number: 6883840
    Abstract: A vehicle outer handle system includes a handle main body formed from a synthetic resin and having a hollow grip part, and an electrode for detecting a change in capacitance. One end of the handle main body is swingably supported in a door outer panel, and the electrode is housed within the grip part. A grounded electrostatic shield plate is disposed with the grip part outwardly of the electrode, thereby preventing an erroneous determination of a user's intention of opening the door.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: April 26, 2005
    Assignees: Kabushiki Kaisha Honda Lock, Honda Giken Kogyo Kabushiki Kaisha, Stanley Electric Co., Ltd.
    Inventors: Masahiko Sueyoshi, Shigeru Kamei, Kazuo Yuhi, Suguru Asakura, Akira Kamikura, Kentaro Yoshimura, Kiyomitsu Ishikawa, Kazuhiko Sugimura
  • Publication number: 20030198676
    Abstract: The present invention is to provide a sustained-release preparation which comprises a compound having angiotensin II antagonistic activity, its pro-drug or their salt, and a biodegradable polymer, and if necessary, a polyvalent metal, and which is highly stable and active and shows angiotensin II antagonistic activity with maintaining circadian rhythm of blood pressure for a long time.
    Type: Application
    Filed: May 22, 2003
    Publication date: October 23, 2003
    Inventors: Yasutaka Igari, Akira Saikawa, Yoshiyuki Inada, Shigeru Kamei
  • Publication number: 20030176360
    Abstract: Medicinal preparations for treating sex hormone-dependent diseases which comprise a combination of a compound having a luteinizing hormone-releasing hormone agonistic effect or its salt with a compound having a luteinizing hormone-releasing hormone antagonistic effect or its salt for administering the compound having a luteinizing hormone-releasing hormone agonistic effect or its salt followed by the compound having a luteinizing hormone-releasing hormone antagonistic effect or its salt. By using these preparations, the concentration of a sex hormone (for example, testosterone, LH, FSH, estrogen) can be quickly recovered after the medicable period of a compound having a luteinizing hormone-releasing hormone antagonistic effect or its salt or a preparation containing the same (preferably a sustained-release preparation), which makes it possible to definitely determine the drug cessation period in an intermittent treatment.
    Type: Application
    Filed: January 2, 2003
    Publication date: September 18, 2003
    Inventors: Yasutaka Igari, Shigeru Kamei
  • Patent number: 6589547
    Abstract: The present invention is to provide a sustained-release preparation which comprises a compound having angiotensin II antagonistic activity, its pro-drug or their salt, and a biodegradable polymer, and if necessary, a polyvalent metal, and which is highly stable and active and shows angiotensin II antagonistic activity while maintaining circadian rhythm of blood pressure for a long time.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: July 8, 2003
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yasutaka Igari, Akira Saikawa, Yoshiyuki Inada, Shigeru Kamei
  • Publication number: 20030068374
    Abstract: A sustained-release preparation containing a physiologically active compound slightly soluble in water, a component obtained by treating with water a polyvalent metal compound slightly soluble in water, and a biodegradable polymer which are improved in the release-control and stabilization of the physiologically active compound slightly soluble in water and can be produced by a process suitable for mass production.
    Type: Application
    Filed: August 19, 2002
    Publication date: April 10, 2003
    Inventors: Shigeru Kamei, Mami Ojima, Takahito Kitayoshi, Yasutaka Igari
  • Patent number: 6528093
    Abstract: A sustained-release preparation which comprises a physiologically active peptide of general formula: wherein X represents an acyl group; R1, R2 and R4 each represents an aromatic cyclic group; R3 represents a D-amino acid residue or a group of the formula: wherein R3′ is a heterocyclic group; R5 represents a group of the formula —(CH2)n—R5′ wherein n is 2 or 3, and R5′ is an amino group which may optionally be substituted, an aromatic cyclic group or an O-glycosyl group; R6 represents a group of the formula —(CH2)n—R6′ wherein n is 2 or 3, and R6′ is an amino group which may optionally be substituted; R7 represents a D-amino acid residue or an azaglycyl residue; and Q represents hydrogen or a lower alkyl group, or a salt thereof and a biodegradable polymer having a terminal carboxyl group.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: March 4, 2003
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigeru Kamei, Yasutaka Igari, Yasuaki Ogawa
  • Publication number: 20030039698
    Abstract: A sustained-release preparation which comprises a physiologically active peptide of general formula 1
    Type: Application
    Filed: August 31, 1999
    Publication date: February 27, 2003
    Inventors: SHIGERU KAMEI, YASUTAKA IGARI, YASUAKI OGAWA
  • Publication number: 20020173467
    Abstract: A sustained-release preparation which comprises a physiologically active peptide of general formula 1
    Type: Application
    Filed: April 23, 2002
    Publication date: November 21, 2002
    Applicant: Takeda Chemical Industries, Ltd.
    Inventors: Shigeru Kamei, Yasutaka Igari, Yasuaki Ogawa
  • Publication number: 20020152582
    Abstract: A vehicle outer handle system includes a handle main body formed from a synthetic resin and having a hollow grip part, and an electrode for detecting a change in capacitance. One end of the handle main body is swingably supported in a door outer panel, and the electrode is housed within the grip part. A grounded electrostatic shield plate is disposed with the grip part outwardly of the electrode, thereby preventing an erroneous determination of a user's intention of opening the door.
    Type: Application
    Filed: March 19, 2002
    Publication date: October 24, 2002
    Applicant: Kabushiki Kaisha Honda Lock
    Inventors: Masahiko Sueyoshi, Shigeru Kamei, Kazuo Yuhi, Suguru Asakura, Akira Kamikura, Kentaro Yoshimura, Kiyomitsu Ishikawa, Kazuhiko Sugimura
  • Publication number: 20020147150
    Abstract: A sustained-release preparation which comprises a physiologically active peptide of general formula 1
    Type: Application
    Filed: December 26, 2001
    Publication date: October 10, 2002
    Applicant: Takeda Chemical Industries, Ltd.
    Inventors: Shigeru Kamei, Yasutaka Igari, Yasuaki Ogawa
  • Patent number: 5972891
    Abstract: A sustained-release preparation which comprises a physiologically active peptide of general formula ##STR1## wherein X represents an acyl group; R.sub.1, R.sub.2 and R.sub.4 each represents an aromatic cyclic group;R.sub.3 represents a D-amino acid residue or a group of the formula ##STR2## wherein R.sub.3 ' is a heterocyclic group; R.sub.5 represents a group of the formula --(CH.sub.2).sub.n --R.sub.5 ' wherein n is 2 or 3, and R.sub.5 ' is an amino group which may optionally be substituted, an aromatic cyclic group or an O-glycosyl group;R.sub.6 represents a group of the formula --(CH.sub.2).sub.n --R.sub.6 ' wherein n is 2 or 3, and R.sub.6 ' is an amino group which may optionally be substituted;R.sub.7 represents a D-amino acid residue or an azaglycyl residue; andQ represents hydrogen or a lower alkyl group, or a salt thereof and a biodegradable polymer having a terminal carboxyl group.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: October 26, 1999
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigeru Kamei, Yasutaka Igari, Yasuaki Ogawa
  • Patent number: 5925617
    Abstract: The present invention is to provide a prophylactic/therapeutic composition for the secondary cataract comprising a polypeptide having an inhibitory activity of cell adhesion and a lactic acid-glycolic acid polymer.The composition of the present invention inhibits adhesion and extension of lens epithelial cells onto the posterior lens capsule after extraction of lens and is useful as a prophylactic/therapeutic composition for the secondary cataract in the clinical point of view.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: July 20, 1999
    Assignee: Senju Pharmaceutical Co., Ltd.
    Inventors: Akira Kiritoshi, Tetsuo Sasabe, Shigeru Kamei, Yasutaka Igari, Noriko Watanabe
  • Patent number: 5716640
    Abstract: A method of producing sustained-release microcapsules containing a biologically active substance from an W/O emulsion comprising an inner aqueous phase containing said biologically active substance and an external oil phase containing a biodegradable polymer, characterized in that microcapsules formed on microencapsulation of said biologically active substance with said biodegradable polymer are heated at a temperature not lower than the glass transition temperature of said biodegradable polymer but not so high as to cause aggregation of the microcapsules. This method enables the production of very useful sustained release microcapsules adapted to release a bologically active substance at a calculated rate over a protracted time period starting immediately following administration without an initial burst within one day following administration.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: February 10, 1998
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigeru Kamei, Minoru Yamada, Yasuaki Ogawa
  • Patent number: 5668111
    Abstract: A sustained-release preparation which comprises a physiologically active peptide of general formula ##STR1## wherein X represents an acyl group; R.sub.1, R.sub.2 and R.sub.4 each represents an aromatic cyclic group; R.sub.3 represents a D-amino acid residue or a group of the formula ##STR2## wherein R.sub.3 ' is a heterocyclic group; R.sub.5 represents a group of the formula --(CH.sub.2).sub.n --R.sub.5 ' wherein n is 2 or 3, and R.sub.5 ' is an amino group which may optionally be substituted, an aromatic cyclic group or an O-glycosyl group;R.sub.6 represents a group of the formula --(CH.sub.2).sub.n --R.sub.6 ' wherein n is 2 or 3, and R.sub.6 ' is an amino group which may optionally be substituted;R.sub.7 represents a D-amino acid residue or an azaglycyl residue; andQ represents hydrogen or a lower alkyl group, or a salt thereof and a biodegradable polymer having a terminal carboxyl group.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: September 16, 1997
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shigeru Kamei, Yasutaka Igari, Yasuaki Ogawa
  • Patent number: 5665394
    Abstract: The present invention relates to a matrix for sustained-release preparation comprising an ester formed at a terminal carboxyl group of a straight-chain polyester which essentially consists of an .alpha.-hydroxymonocarboxylic acid. The matrix is stable to light, heat, moisture, coloring etc., and is of low toxicity. The sustained-release preparation produced by using the ester of the present invention offers stable drug release over an extended period of time, ensuring sustained stable effect. Furthermore, the sustained-release preparation does not show excess drug release just after administration.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: September 9, 1997
    Assignees: Takeda Chemical Industries, Ltd., Wako Purechemical Industries, Ltd.
    Inventors: Yasutaka Igari, Akira Saikawa, Kayoko Okamoto, Shigeru Kamei, Masahisa Oka, Atsunori Sano
  • Patent number: 5594091
    Abstract: The present invention relates to a matrix for sustained-release preparation comprising an ester formed at a terminal carboxyl group of a straight-chain polyester which essentially consists of an .alpha.-hydroxymonocarboxylic acid. The matrix is stable to light, heat, moisture, coloring etc., and is of low toxicity. The sustained-release preparation produced by using the ester of the present invention offers stable drug release over an extended period of time, ensuring sustained stable effect. Furthermore, the sustained-release preparation does not show excess drug release just after administration.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: January 14, 1997
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Yasutaka Igari, Akira Saikawa, Kayoko Okamoto, Shigeru Kamei, Masahisa Oka, Atsunori Sano