Patents by Inventor Hirohito Tsubouchi

Hirohito Tsubouchi 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: 10517928
    Abstract: According to this invention, the following are provided: a pharmaceutical composition for treating and/or preventing esophageal stenosis, comprising an HGF protein as an active ingredient (wherein the HGF protein may be a polypeptide that is any one of the following: (a) a polypeptide comprising the amino acid sequence shown in SEQ ID NO: 2; (b) a polypeptide comprising an amino acid sequence shown in SEQ ID NO: 2 in which one to several amino acids are deleted, substituted, or added; or (c) a polypeptide comprising an amino acid sequence having at least 90% identity with the amino acid sequence shown in SEQ ID NO: 2; and a stent comprising the pharmaceutical composition.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: December 31, 2019
    Assignee: Kagoshima University
    Inventors: Akio Ido, Hirohito Tsubouchi, Yuga Komaki
  • Publication number: 20170224773
    Abstract: According to this invention, the following are provided: a pharmaceutical composition for treating and/or preventing esophageal stenosis, comprising an HGF protein as an active ingredient (wherein the HGF protein may be a polypeptide that is any one of the following: (a) a polypeptide comprising the amino acid sequence shown in SEQ ID NO: 2; (b) a polypeptide comprising an amino acid sequence shown in SEQ ID NO: 2 in which one to several amino acids are deleted, substituted, or added; or (c) a polypeptide comprising an amino acid sequence having at least 90% identity with the amino acid sequence shown in SEQ ID NO: 2; and a stent comprising the pharmaceutical composition.
    Type: Application
    Filed: August 6, 2015
    Publication date: August 10, 2017
    Applicant: KAGOSHIMA UNIVERSITY
    Inventors: Akio IDO, Hirohito TSUBOUCHI, Yuga KOMAKI
  • Patent number: 9272018
    Abstract: The present invention provides a therapeutic agent for acute liver failure containing a hepatocyte growth factor (HGF), particularly an agent for treating fulminant hepatitis or late onset hepatic failure or suppression of progression of acute liver failure without hepatic coma to fulminant hepatitis or late onset hepatic failure. The present invention also provides a method for evaluating the efficacy of HGF including measuring the amount of ?-fetoprotein (liver regeneration biomarker) and/or soluble Fas (anti-apoptotic biomarker) in a sample obtained from a liver injury patient administered with HGF.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: March 1, 2016
    Assignee: Kyoto University
    Inventors: Hirohito Tsubouchi, Akio Ido, Tsutomu Chiba, Akira Shimizu
  • Patent number: 8846751
    Abstract: This invention provides an agent for inhibiting production of hepatitis C virus with notable anti-HCV activity and without side-effects. The agent comprises a proanthocyanidin polymer composition illustrated in the following the general formula (1), wherein R1 is hydrogen or hydroxyl, R2 is hydroxyl, R3 is hydrogen when R1 is either hydrogen or hydroxyl, but R3 is possibly hydroxyl when R1 is either hydrogen or hydroxyl to the extent that both R1 and R3 being hydroxyl is at most 40 percents in the proanthocyanidin polymer composition said units of flavan-3-ol being bonded each other in any one of three patterns as follows; (i) a bond between carbon at the position 4 and carbon at the position 8, (ii) a bond between carbon at the position 4 and carbon at the position 6, (iii) a bond between carbon at the position 4 and carbon at the position 8, and between carbon, at the position 2 and oxygen at the position 7.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: September 30, 2014
    Assignees: Miyazaki Enterprise Promotion Organization, Miyazaki Prefecture, Unkai Shuzo Co., Ltd., Minami Nippon Dairy Co-Op Co., Ltd.
    Inventors: Masahiko Takeshita, Hirohito Tsubouchi, Hirofumi Uto, Hiroaki Kataoka, Takanori Kai, Hideaki Hirabaru, Miho Sakai, Ena Akamatsu
  • Publication number: 20140234341
    Abstract: The present invention provides a therapeutic agent for acute liver failure containing a hepatocyte growth factor (HGF), particularly an agent for treating fulminant hepatitis or late onset hepatic failure or suppression of progression of acute liver failure without hepatic coma to fulminant hepatitis or late onset hepatic failure. The present invention also provides a method for evaluating the efficacy of HGF including measuring the amount of ?-fetoprotein (liver regeneration biomarker) and/or soluble Fas (anti-apoptotic biomarker) in a sample obtained from a liver injury patient administered with HGF.
    Type: Application
    Filed: April 18, 2012
    Publication date: August 21, 2014
    Applicant: KYOTO UNIVERSITY
    Inventors: Hirohito Tsubouchi, Akio Ido, Tsutomu Chiba, Akira Shimizu
  • Patent number: 8263347
    Abstract: Disclosed are: a marker for the diagnosis of a liver disease, which can determine the disease in a simple manner; an antibody directed against the marker; a diagnostic agent; a diagnosis method; and a method for marker detection in blood or serum. Proteome analysis revealed that quantities of the full-length kininogen and three partial peptides thereof (sequence A: position-440 to position-456, sequence B: position-439 to position-456, and sequence C: position-438 to position-456) in sera of patients with non-alcoholic fatty liver disease are significantly different from those in sera of healthy individuals; and a diagnostic agent and a detecting method for the non-alcoholic fatty liver disease that can be conveniently used for medical examination are established.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: September 11, 2012
    Assignees: Miyazaki Prefectural Industrial Support Foundation, Kagoshima University, Chugai Seiyaku Kabushiki Kaisha
    Inventors: Hirohito Tsubouchi, Hirofumi Uto, Takeshi Okanoue, Yo-ichi Ishida, Yuko Sato, Masayuki Sudo
  • Publication number: 20110288164
    Abstract: This invention provides an agent for inhibiting production of hepatitis C virus with notable anti-HCV activity and without side-effects. The agent comprises a proanthocyanidin polymer composition illustrated in the following the general formula (1), wherein R1 is hydrogen or hydroxyl, R2 is hydroxyl, R3 is hydrogen when R1 is either hydrogen or hydroxyl, but R3 is possibly hydroxyl when R1 is either hydrogen or hydroxyl to the extent that both R1 and R3 being hydroxyl is at most 40 percents in the proanthocyanidin polymer composition said units of flavan-3-ol being bonded each other in any one of three patterns as follows; (i) a bond between carbon at the position 4 and carbon at the position 8, (ii) a bond between carbon at the position 4 and carbon at the position 6, (iii) a bond between carbon at the position 4 and carbon at the position 8, and between carbon, at the position 2 and oxygen at the position 7.
    Type: Application
    Filed: August 5, 2011
    Publication date: November 24, 2011
    Applicants: MIYAZAKI PREFECTURAL INDUSTRIAL SUPPORT FOUNDATION, MINAMI NIPPON DAIRY CO-OP CO., LTD., UNKAI SHUZO CO., LTD., MIYAZAKI PREFECTURE
    Inventors: Masahiko TAKESHITA, Hirohito TSUBOUCHI, Hirofumi UTO, Hiroaki KATAOKA, Takanori KAI, Hideaki HIRABARU, Miho SAKAI, Ena AKAMATSU
  • Publication number: 20110129859
    Abstract: Disclosed are: a marker for the diagnosis of a liver disease, which can determine the disease in a simple manner; an antibody directed against the marker; a diagnostic agent; a diagnosis method; and a method for marker detection in blood or serum. Proteome analysis revealed that quantities of the full-length kininogen and three partial peptides thereof (sequence A: position-440 to position-456, sequence B: position-439 to position-456, and sequence C: position-438 to position-456) in sera of patients with non-alcoholic fatty liver disease are significantly different from those in sera of healthy individuals; and a diagnostic agent and a detecting method for the non-alcoholic fatty liver disease that can be conveniently used for medical examination are established.
    Type: Application
    Filed: October 20, 2008
    Publication date: June 2, 2011
    Inventors: Hirohito Tsubouchi, Hirofumi Uto, Takeshi Okanoue, Yo-ichi Ishida, Yuko Sato, Masayuki Sudo
  • Publication number: 20100055065
    Abstract: This invention provides an agent for inhibiting production of hepatitis C virus with notable anti-HCV activity and without side-effects. The agent comprises a proanthocyanidin polymer composition illustrated in the following the general formula (1), wherein R1 is hydrogen or hydroxyl, R2 is hydroxyl, R3 is hydrogen when R1 is either hydrogen or hydroxyl, but R3 is possibly hydroxyl when R1 is either hydrogen or hydroxyl to the extent that both R1 and R3 being hydroxyl is at most 40 percents in the proanthocyanidin polymer composition said units of flavan-3-ol being bonded each other in any one of three patterns as follows; (i) a bond between carbon at the position 4 and carbon at the position 8, (ii) a bond between carbon at the position 4 and carbon at the position 6, (iii) a bond between carbon at the position 4 and carbon at the position 8, and between carbon at the position 2 and oxygen at the position 7.
    Type: Application
    Filed: August 24, 2009
    Publication date: March 4, 2010
    Applicants: MIYAZAKI PREFECTURAL INDUSTRIAL SUPPORT FOUNDATION, MIYAZAKI PREFECTURE, UNKAI SHUZO CO., LTD., MINAMI NIPPON DAIRY CO-OP CO., LTD.
    Inventors: Masahiko TAKESHITA, Hirohito TSUBOUCHI, Hirofumi UTO, Hiroaki KATAOKA, Takanori KAI, Hideaki HIRABARU, Miho SAKAI, Ena AKAMATSU
  • Publication number: 20060094679
    Abstract: An object of the present invention is to provide a method of preventing or treating liver disease, particularly non-alcoholic fatty liver disease, hepatic fibrosis, cirrhosis, or liver cancer. The present invention is directed to a method of preventing or treating liver disease comprising administering to a patient in need thereof an effective amount of an osteoactivin-like protein or a fragment thereof having liver disease-suppressing activity similar to that of osteoactivin or a gene comprising a DNA encoding such a protein or fragment.
    Type: Application
    Filed: August 23, 2005
    Publication date: May 4, 2006
    Applicant: MIYAZAKI PREFECTURE
    Inventors: Hirohito Tsubouchi, Satoru Hasuike
  • Patent number: 5500354
    Abstract: According to the present invention, there are provided hepatic parenchymal cell growth factor obtained by recombinant DNA technology, a gene coding for the factor, an expression vector capable of expressing the gene, a cell, in particular animal cell, transformed with the expression vector, and a process for producing the hepatic parenchymal cell growth factor.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: March 19, 1996
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Naomi Kitamura, Keiji Miyazawa, Yasushi Daikuhara, Hirohito Tsubouchi, Daiji Naka, Kazuhiro Takahashi, Rie Matsui, Yoshiko Yoshiyama, Takehisa Ishii
  • Patent number: 5004805
    Abstract: A hepatocyte growth factor comprising a proteinous substance derived from human blood and showing the following physicochemical properties and physiologic activity:(i) its molecular weight is estimated to be approximately 76,000 to 92,00 by SDS-PAGE analysis (under non-reductive conditon);(ii) it possesses HGF activity;(iii) the HGF activity is inactivated by heat treatment for 10 minutes at 80.degree. C.;(iv) the HGF activity may be lost by digestion with trypsin or with chymotrypsin; and(v) it has a high affinity for heparin.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: April 2, 1991
    Assignees: Shuji Hashimoto, Yasushi Daikuhara, Eiichi Gohda, Hirohito Tsubouchi, Mitsubishi Kasei Corporation
    Inventors: Eiichi Gohda, Hirohito Tsubouchi, Hiroyuki Nakayama, Shuichi Hirono, Kozo Takahashi, Shuji Hashimoto, Yasushi Daikuhara