Patents by Inventor Keiichi Hiramatsu

Keiichi Hiramatsu 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: 9809645
    Abstract: [Problem] The present invention addresses the problem of providing an anti-Staphylococcus antibody having preventive or therapeutic effects on staphylococcal infections. [Solution] Provided is an anti-Staphylococcus antibody having preventive or therapeutic effects on staphylococcal infections and a method for manufacturing said antibody, as well as a composition, a product, and a drug containing said antibody. The antibody is obtained by using deacetylated Staphylococcus for immunization.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: November 7, 2017
    Assignees: ZENYAKU KOGYO KABUSHIKIKAISHA, Juntendo Educational Foundation
    Inventors: Hiroyoshi Ohsawa, Jumpei Enami, Keiichi Hiramatsu
  • Publication number: 20160257651
    Abstract: A compound represented by the general formula (I) or a salt thereof having a potent antibacterial activity against bacteria that have acquired resistance to quinolones, and a medicament for prophylactic and/or therapeutic treatment of an infectious disease containing the compound or a salt thereof as an active ingredient, as well as a medicament for prophylactic and/or therapeutic treatment of an infectious disease containing a combination of the compound or a salt thereof, and a quinolone.
    Type: Application
    Filed: April 18, 2014
    Publication date: September 8, 2016
    Applicant: JUNTENDO EDUCATIONAL FOUNDATION
    Inventors: Keiichi HIRAMATSU, Yuh MORIMOTO, Tadashi BABA, Isao HAYAKAWA
  • Publication number: 20160143878
    Abstract: An antibacterial agent comprising a compound represented by the following general formula (I), which can exhibit potent antibacterial activity against bacteria that have acquired resistance to quinolones (in the formula, R1 and R4 represents hydrogen atom, hydroxyl group, or a lower alkoxy group; R2 and R3 represents hydrogen atom or hydroxyl group; R5 represents hydrogen atom, a lower cyclic alkyl group, or a lower alkoxy group; R1? and R5? represents hydrogen atom; R2? and R3? represents hydrogen atom, hydroxyl group, or a lower alkoxy group; and R4? represents hydrogen atom or hydroxyl group).
    Type: Application
    Filed: February 8, 2016
    Publication date: May 26, 2016
    Applicant: JUNTENDO EDUCATIONAL FOUNDATION
    Inventors: Keiichi HIRAMATSU, Yuh MORIMOTO, Tadashi BABA
  • Publication number: 20160024190
    Abstract: [Problem] The present invention addresses the problem of providing an anti-Staphylococcus antibody having preventive or therapeutic effects on staphylococcal infections. [Solution] Provided is an anti-Staphylococcus antibody having preventive or therapeutic effects on staphylococcal infections and a method for manufacturing said antibody, as well as a composition, a product, and a drug containing said antibody. The antibody is obtained by using deacetylated Staphylococcus for immunization.
    Type: Application
    Filed: March 11, 2014
    Publication date: January 28, 2016
    Applicants: ZENYAKU KOGYO KABUSHIKIKAISHA, Juntendo Educational Foundation
    Inventors: Hiroyoshi OHSAWA, Jumpei ENAMI, Keiichi HIRAMATSU
  • Publication number: 20150322033
    Abstract: An antibacterial agent comprising a compound represented by the following general formula (I), which can exhibit potent antibacterial activity against bacteria that have acquired resistance to quinolones (in the formula, R1 and R4 represents hydrogen atom, hydroxyl group, or a lower alkoxy group; R2 and R3 represents hydrogen atom or hydroxyl group; W represents hydrogen atom, a lower cyclic alkyl group, or a lower alkoxy group; R1? and R5? represents hydrogen atom; R2? and R3? represents hydrogen atom, hydroxyl group, or a lower alkoxy group; and R4? represents hydrogen atom or hydroxyl group).
    Type: Application
    Filed: November 12, 2013
    Publication date: November 12, 2015
    Applicant: JUNTENDO EDUCATIONAL FOUNDATION
    Inventors: Keiichi HIRAMATSU, Yuh MORIMOTO, Tadashi BABA
  • Publication number: 20120258980
    Abstract: A method for treating an individual infected with drug-resistant bacteria resistant to at least one drug, the method including: administering to the individual an antibacterial agent for drug-resistant bacteria which comprises at least one of a nybomycin and a derivative thereof, wherein the antibacterial agent for drug-resistant bacteria is effective to the drug-resistant bacteria resistant to at least one drug.
    Type: Application
    Filed: May 9, 2012
    Publication date: October 11, 2012
    Inventors: Masayuki Igarashi, Keiichi Hiramatsu
  • Patent number: 8217150
    Abstract: According to the present invention, an antibody against a Panton-Valentine leukocidin toxin contained in Staphylococcus aureus, a method and a kit for detecting the toxin with the use of the antibody, and a pharmaceutical composition containing an antibody against a Panton-Valentine leukocidin toxin for treating PVL infection caused by Staphylococcus aureus containing PVL are provided. Also, an antibody which is capable of binding to Panton-Valentine leukocidin F and has no cross-reactivity to LukD and/or HlgB and an antibody which is capable of binding to Panton-Valentine leukocidin S and has no cross-reactivity to at least one of LukE, HlgC, and HlgA are provided.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: July 10, 2012
    Assignees: Juntendo University School of Medicine, Denka Seiken Co., Ltd.
    Inventors: Kanenari Ohishi, Tadashi Baba, Keiichi Hiramatsu, Yasuo Nakatomi
  • Publication number: 20110223614
    Abstract: According to the present invention, an antibody against a Panton-Valentine leukocidin toxin contained in Staphylococcus aureus, a method and a kit for detecting the toxin with the use of the antibody, and a pharmaceutical composition containing an antibody against a Panton-Valentine leukocidin toxin for treating PVL infection caused by Staphylococcus aureus containing PVL are provided. Also, an antibody which is capable of binding to Panton-Valentine leukocidin F and has no cross-reactivity to LukD and/or HlgB and an antibody which is capable of binding to Panton-Valentine leukocidin S and has no cross-reactivity to at least one of LukE, HlgC, and HlgA are provided.
    Type: Application
    Filed: May 23, 2011
    Publication date: September 15, 2011
    Inventors: Kanenari OHISHI, Tadashi Baba, Keiichi Hiramatsu, Yasuo Nakatomi
  • Patent number: 7947808
    Abstract: According to the present invention, an antibody against a Panton-Valentine leukocidin toxin contained in Staphylococcus aureus, a method and a kit for detecting the toxin with the use of the antibody, and a pharmaceutical composition containing an antibody against a Panton-Valentine leukocidin toxin for treating PVL infection caused by Staphylococcus aureus containing PVL are provided. Also, an antibody which is capable of binding to Panton-Valentine leukocidin F and has no cross-reactivity to LukD and/or HlgB and an antibody which is capable of binding to Panton-Valentine leukocidin S and has no cross-reactivity to at least one of LukE, HlgC, and HlgA are provided.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: May 24, 2011
    Assignee: Juntendo University School of Medicine
    Inventors: Kanenari Ohishi, Tadashi Baba, Keiichi Hiramatsu, Yasuo Nakatomi
  • Publication number: 20100092487
    Abstract: According to the present invention, an antibody against a Panton-Valentine leukocidin toxin contained in Staphylococcus aureus, a method and a kit for detecting the toxin with the use of the antibody, and a pharmaceutical composition containing an antibody against a Panton-Valentine leukocidin toxin for treating PVL infection caused by Staphylococcus aureus containing PVL are provided. Also, an antibody which is capable of binding to Panton-Valentine leukocidin F and has no cross-reactivity to LukD and/or HlgB and an antibody which is capable of binding to Panton-Valentine leukocidin S and has no cross-reactivity to at least one of LukE, HlgC, and HlgA are provided.
    Type: Application
    Filed: July 3, 2007
    Publication date: April 15, 2010
    Applicants: JUNTENDO UNIVERSITY SCHOOL OF MEDICINE, DENKA SEIKEN CO., LTD.
    Inventors: Kanenari Ohishi, Tadashi Baba, Keiichi Hiramatsu, Yasuo Nakatomi
  • Patent number: 6897304
    Abstract: A cephem compound or pharmaceutically acceptable salt thereof represented by the formula I: wherein R1 and R2 may be the same or different and each represent hydrogen atom, nitro or cyano; R3 represents C1-C6 alkyl which may be substituted with carboxyl; R4 represents hydrogen atom or amino; X represents —S— or —SO—, there being no case where both of R1 and R2 are simultaneously hydrogen atom.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: May 24, 2005
    Assignee: Zenyaku Kogyo Kabushiki Kaisha
    Inventors: Seiichiro Kawashima, Keiichi Hiramatsu, Hideaki Hanaki, Hiroaki Yamazaki, Hidenori Harada
  • Publication number: 20040019202
    Abstract: A cephem compound or pharmaceutically acceptable salt thereof represented by the formula I: 1
    Type: Application
    Filed: March 21, 2003
    Publication date: January 29, 2004
    Inventors: Seiichiro Kawashima, Keiichi Hiramatsu, Hideaki Hanaki, Hiroaki Yamazaki, Hidenori Harada
  • Patent number: 6544991
    Abstract: A composition having antibacterial activity is disclosed. More particularly, a mixture of an oxazolidinone compound, sulbactam, and ampicillin active agents, demonstrating activity against resistant strains of bacteria is disclosed. Methods for using an oxazolidinone compound, sulbactam, and ampicillin to treat a bacterial infection are also described.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: April 8, 2003
    Assignee: Pharmacia & Upjohn Company
    Inventors: Donald H. Batts, Keiichi Hiramatsu
  • Publication number: 20020022610
    Abstract: A composition having antibacterial activity is disclosed. More particularly, a mixture of an oxazolidinone compound, sulbactam, and ampicillin active agents, demonstrating activity against resistant strains of bacteria is disclosed. Methods for using an oxazolidinone compound, sulbactam, and ampicillin to treat a bacterial infection are also described.
    Type: Application
    Filed: June 21, 2001
    Publication date: February 21, 2002
    Inventors: Donald H. Batts, Keiichi Hiramatsu
  • Patent number: 6294527
    Abstract: An antibacterial compound wherein represents benzene ring, pyridine ring, pyrazine ring or 5-membered aromatic neterocycle (having one oxygen or sulfur atom as ring-constituting atom), there being no R4 where  represents 5-membered aromatic heterocycle; X and Y respectively represent hydrogen atom or CXY represents C═N—OR5 wherein R5 represents hydrogen atom, halo C1-C6 alkyl or C3-C7 cycloalkyl; R1 represents phenyl, furyl, thienyl, thiazolyl (which may be substituted by amino group), tetrazolyl or thiadiazolyl, R2, R3 and R4 respectively represent hydrogen atom, halogen, hydroxyl group, nitro, C1-C6 alkoxy, trifluoromethyl, isothiuronium C1-C6 alkyl, amino C1-C6 alkyl, halo C1-C6 alkyl, morpholino, piperidino or piperazinyl.
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: September 25, 2001
    Assignee: Zenyaku Kogyo Kabushiki Kaisha
    Inventors: Hideaki Hanaki, Hiroaki Yamazaki, Yoshio Tsuchida, Hideki Sato, Keiichi Hiramatsu, Seiichiro Kawashima
  • Patent number: 6156507
    Abstract: Disclosed is a specific identification method of an MRSA and MRC-NS, which is speedy, simple and reliable. Specifically, the present invention provides a diagnostic method of an MRSA or MRC-NS, which comprises performing a reaction with a sample by making combined use of a part of a mecDNA, which is an integrated adventitious DNA existing on a chromosome of the MRSA or MRC-NS and carrying an mecA gene thereon, and a part of a nucleotide sequence of a chromosomal DNA surrounding the integrated DNA; and also a diagnostic method of an MRSA or MRC-NS by PCR, LCR or hybridization, which comprises performing a reaction with a sample by using a nucleotide sequence of a chromosomal DNA surrounding an integrated site of a mecDNA in a chromosome of an MSSA or MSC-NS, wherein said method makes use of an occurrence of a negative reaction when said sample contains a mecDNA integrated therein.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: December 5, 2000
    Assignee: Kainos Laboratories, Inc.
    Inventors: Keiichi Hiramatsu, Teruyo Ito, Akira Awaya, Hiroie Ohno, Tsukasa Hayashi