Patents by Inventor Keiji Hasumi

Keiji Hasumi 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: 9216987
    Abstract: The invention provides a chroman derivative represented by the following Formula (I) that enables the production of an SMTP compound having a desired structure: wherein, in Formula (I), each of Y1 and Y2 independently represents a hydrogen atom, a hydroxy group, an alkoxy group, an aryloxy group, or a halogen atom; each of R1 and R2 independently represents a hydrogen atom, an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, or a carbamoyl group; L represents an aliphatic hydrocarbon group having from 4 to 10 carbon atoms; each X independently represents a hydroxy group or a carboxy group; and n represents an integer from 0 to 2.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: December 22, 2015
    Assignee: TMS CO., LTD.
    Inventors: Keiji Hasumi, Eriko Suzuki, Yuuichi Nishimura, Yoshikazu Kitano, Keiko Hasegawa, Naoko Nishimura, Kohta Tsujihara
  • Patent number: 9078880
    Abstract: Disclosed is a cytoprotective agent for use with respect to ischemic damage, including as an active ingredient a triprenyl phenol compound represented by the following general formula (I), wherein X is —CHY—C(CH3)2Z, Y and Z are each independently —H or —OH, or jointly form a single bond, and R represents a hydrogen atom or a substituent with a molecular weight of 1000 or less.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: July 14, 2015
    Assignees: National University Corporation Tokyo University of Agriculture and Technology, TMS Co., Ltd., Showa University
    Inventors: Kazuo Honda, Terumasa Hashimoto, Keita Shibata, Keiko Hasegawa, Keiji Hasumi
  • Publication number: 20150025251
    Abstract: The invention provides a chroman derivative represented by the following Formula (I) that enables the production of an SMTP compound having a desired structure: wherein, in Formula (I), each of Y1 and Y2 independently represents a hydrogen atom, a hydroxy group, an alkoxy group, an aryloxy group, or a halogen atom; each of R1 and R2 independently represents a hydrogen atom, an alkyl group, an aryl group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, or a carbamoyl group; L represents an aliphatic hydrocarbon group having from 4 to 10 carbon atoms; each X independently represents a hydroxy group or a carboxy group; and n represents an integer from 0 to 2.
    Type: Application
    Filed: March 1, 2013
    Publication date: January 22, 2015
    Applicant: TMS CO., LTD.
    Inventors: Keiji Hasumi, Eriko Suzuki, Yuuichi Nishimura, Yoshikazu Kitano, Keiko Hasegawa, Naoko Nishimura, Kohta Tsujihara
  • Patent number: 8883462
    Abstract: A triprenyl phenol compound represented by the following formula (II) and (III) and having a thrombolysis-enhancing activity, and an efficient method for producing the triprenyl phenol compound. In formula (II) and (III), R1 represents an aromatic group having as a substituent or as a part of a substituent at least one member selected from the group consisting of a carboxyl group, a hydroxyl group, a sulfonic acid group and a secondary amino group, or an aromatic group which comprises a secondary amino group and may comprise nitrogen; R4 in the general formula (III) represents an aromatic amino acid residue represented by the general formula (III-1) below; X represents —CHY—(CH3)2Z; and Y and Z are respectively —H or —OH or together form a single bond: (III-1) wherein R5 represents a hydroxyl group which may be present or absent; and n represents an integer of 0 or 1.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: November 11, 2014
    Assignee: Tokyo University of Agriculture and Technology TLO Co., Ltd.
    Inventors: Keiji Hasumi, Yoshikazu Kitano, Hideo Ohishi, Haruki Koide, Keiko Hasegawa, Ritsuko Narasaki
  • Patent number: 8193173
    Abstract: The present invention relates to a liver function ameliorant containing orniplabin as an active ingredient thereof.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: June 5, 2012
    Assignee: Tokyo University of Agriculture and Technology TLO Co., Ltd.
    Inventors: Keiji Hasumi, Fumihiko Maeda, Kunitoshi Mitsumori
  • Publication number: 20120135996
    Abstract: Disclosed is a cytoprotective agent for use with respect to ischemic damage, including as an active ingredient a triprenyl phenol compound represented by the following general formula (I), wherein X is —CHY—C(CH3)2Z, Y and Z are each independently —H or —OH, or jointly form a single bond, and R represents a hydrogen atom or a substituent with a molecular weight of 1000 or less.
    Type: Application
    Filed: February 5, 2010
    Publication date: May 31, 2012
    Inventors: Kazuo Honda, Terumasa Hashimoto, Keita Shibata, Keiko Hasegawa, Keiji Hasumi
  • Publication number: 20120100579
    Abstract: A triprenyl phenol compound represented by the following formula (II) and (III) and having a thrombolysis-enhancing activity, and an efficient method for producing the triprenyl phenol compound. In formula (II) and (III), R1 represents an aromatic group having as a substituent or as a part of a substituent at least one member selected from the group consisting of a carboxyl group, a hydroxyl group, a sulfonic acid group and a secondary amino group, or an aromatic group which comprises a secondary amino group and may comprise nitrogen; R4 in the general formula (III) represents an aromatic amino acid residue represented by the general formula (III-1) below; X represents —CHY—(CH3)2Z; and Y and Z are respectively —H or —OH or together form a single bond: (III-1) wherein R5 represents a hydroxyl group which may be present or absent; and n represents an integer of 0 or 1.
    Type: Application
    Filed: January 4, 2012
    Publication date: April 26, 2012
    Applicant: TOKYO UNIVERSITY OF AGRICLATURE AND TECHNOLOGY TLO CO., LTD.
    Inventors: Keiji HASUMI, Yoshikazu KITANO, Hideo OHISHI, Haruki KOIDE, Keiko HASEGAWA, Ritsuko NARASAKI
  • Patent number: 8110596
    Abstract: The present invention provides a triprenyl phenol compound represented by the following formula (II) and (III) and having a thrombolysis-enhancing activity, and an efficient method for producing the triprenyl phenol compound. In formula (II) and (III), R1 represents an aromatic group having as a substituent or as a part of a substituent at least one member selected from the group consisting of a carboxyl group, a hydroxyl group, a sulfonic acid group and a secondary amino group, or an aromatic group which comprises a secondary amino group and may comprise nitrogen; R4 in the general formula (III) represents an aromatic amino acid residue represented by the general formula (III-1) below; X represents —CHY—(CH3)2Z; and Y and Z are respectively —H or —OH or together form a single bond: (III-1) wherein R5 represents a hydroxyl group which may be present or absent; and n represents an integer of 0 or 1.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: February 7, 2012
    Assignee: Tokyo University of Agriculture and Technology TLO Co., Ltd.
    Inventors: Keiji Hasumi, Yoshikazu Kitano, Hideo Ohishi, Haruki Koide, Keiko Hasegawa, Ritsuko Narasaki
  • Publication number: 20110092442
    Abstract: An anticancer agent containing BL-angiostatin as an active ingredient; and a process for producing the same. Also a method for treating cancer comprising administering to a mammal a pharmaceutically effective amount of BL-angiostatin.
    Type: Application
    Filed: February 24, 2004
    Publication date: April 21, 2011
    Applicant: TTC CO., LTD
    Inventors: Keiji Hasumi, Kosuke Shimizu, Tetsuro Yamamoto
  • Publication number: 20090270476
    Abstract: A pharmaceutical composition for treatment of nephritis of the present invention comprises a triprenylphenol compound as an active substance, preferably the triprenylphenol compound represented by the following general formula (1) as an active substance, and further preferably orniplabin represented as n=3 in the following general formula (1) as an active substance. general formula (1) (in formula (1) n is one of integer selected from 1 to 10). Further a manufacturing method of a pharmaceutical composition for treatment or prevention of nephritis of the present invention comprises using a triprenylphenol compound as an active substance.
    Type: Application
    Filed: September 25, 2006
    Publication date: October 29, 2009
    Inventors: Keiji Hasumi, Kazumi Yagasaki
  • Publication number: 20090216028
    Abstract: The present invention provides a triprenyl phenol compound represented by the following formula (II) and (III) and having a thrombolysis-enhancing activity, and an efficient method for producing the triprenyl phenol compound. In formula (II) and (III), R1 represents an aromatic group having as a substituent or as a part of a substituent at least one member selected from the group consisting of a carboxyl group, a hydroxyl group, a sulfonic acid group and a secondary amino group, or an aromatic group which comprises a secondary amino group and may comprise nitrogen; R4 in the general formula (III) represents an aromatic amino acid residue represented by the general formula (III-1) below; X represents —CHY—(CH3)2Z; and Y and Z are respectively —H or —OH or together form a single bond: (III-1) wherein R5 represents a hydroxyl group which may be present or absent; and n represents an integer of 0 or 1.
    Type: Application
    Filed: March 20, 2007
    Publication date: August 27, 2009
    Applicant: Tokyo University of Agriculture and Technology TLO Co., LTD.
    Inventors: Keiji Hasumi, Yoshikazu Kitano, Hideo Ohishi, Haruki Koide, Keiko Hasegawa, Ritsuko Narasaki
  • Patent number: 7476515
    Abstract: The present invention provides an affinity trap reactor that enables the reaction between an enzyme bound to a support and substrate to proceed efficiently without its applications being restricted by the type of enzyme and substrate used. The present invention relates to an affinity trap reactor composed of a support bound with an enzyme and a molecule that specifically binds with a substrate of the enzyme, and a single-stage process for obtaining BL-angiostatin from plasminogen contained in a biological sample, wherein a biological sample containing plasminogen is applied to an affinity trap reactor composed of a support bound with bacillolysin MA and lysine, and reacted under conditions of a temperature of 0 to 50° C. in the presence of isopropyl alcohol but in the absence of calcium ions.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: January 13, 2009
    Assignee: TTC Co., Ltd.
    Inventors: Keiji Hasumi, Kosuke Shimizu
  • Publication number: 20080293799
    Abstract: The present invention relates to a liver function ameliorant containing orniplabin as an active ingredient thereof.
    Type: Application
    Filed: February 17, 2006
    Publication date: November 27, 2008
    Inventors: Keiji Hasumi, Fumihiko Maeda, Kunitoshi Mitsumori
  • Publication number: 20060134721
    Abstract: The present invention provides an affinity trap reactor that enables the reaction between an enzyme bound to a support and substrate to proceed efficiently without its applications being restricted by the type of enzyme and substrate used. The present invention relates to an affinity trap reactor composed of a support bound with an enzyme and a molecule that specifically binds with a substrate of the enzyme, and a single-stage process for obtaining BL-angiostatin from plasminogen contained in a biological sample, wherein a biological sample containing plasminogen is applied to an affinity trap reactor composed of a support bound with bacillolysin MA and lysine, and reacted under conditions of a temperature of 0 to 50° C. in the presence of isopropyl alcohol but in the absence of calcium ions.
    Type: Application
    Filed: January 17, 2003
    Publication date: June 22, 2006
    Inventors: Keiji Hasumi, Kosuke Shimizu
  • Patent number: 5482524
    Abstract: An atmospheric pressure, elevated temperature gas desorption apparatus which enables quanitiative analysis of impurities absorbed in or on the surface of a solid sample (semiconductor wafer, optical disc, etc.) is disclosed. The atmospheric pressure, elevated temperature gas desorption apparatus for desorbing impurities absorbed in or on the surface of a plate-like solid sample 18 into a carrier gas 19 in a chamber 6 under an atmospheric pressure while increasing the temperature of the solid sample 18 includes a desorption room 7A provided in the chamber 6 and connected through to a first gas supply system 1 for supplying the carrier gas 19, for desorbing impurities absorbed in or on the surface of the solid sample 18 into the carrier gas 19. A sample support room 7B is provided in the chamber 6 and is separated from the desorption room 7A by a partition member 6A. The solid sample 18 is in close contact with the partition member 6A.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: January 9, 1996
    Assignees: Hitachi, Ltd., Hitachi Tokyo Electronics Co., Ltd.
    Inventors: Kazuo Nakano, Kazuaki Mizokami, Keiji Hasumi, Katsuhiko Itoh, Michimasa Funabashi, Yasuhiro Mitsui, Takashi Irie, Takeshi Tajima, Sadao Matsuoka
  • Patent number: 5304797
    Abstract: Ultra-low concentrations of impurities such as water in a highly-purified gas are analyzed by a system having an ion source chamber and a drift chamber. The ion source chamber ionizes one of a sample gas and a carrier gas to produce main component ions, and the other of the sample gas and carrier gas is introduced into the drift chamber. The invention controls the residence time of main component ions in one of the first and second chambers to be shorter than the mean reaction time of main component ions and impurity molecules of the sample gas in the one of the first and second chambers.
    Type: Grant
    Filed: February 11, 1993
    Date of Patent: April 19, 1994
    Assignees: Hitachi, Ltd., Hitachi Tokyo Electronics, Co., Ltd.
    Inventors: Takashi Irie, Yasuhiro Mitsui, Keiji Hasumi
  • Patent number: 4996422
    Abstract: A mass spectrometer, including an evacuable vessle, mass separation means provided in the evacuable vessel for separating ions in accordance with the mass thereof, and ion detection means provided in the evacuable vessel for detecting ions emitted from the mass separation means to convert the emitted ions into an electric signal, in which the ion detection means includes an electron-multiplier for detecting positive ions and a photo-multiplier for detecting negative ions. According to this mass spectrometer, positive ions can be detected at high sensitivity, and negative ions are readily detected.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: February 26, 1991
    Assignees: Hitachi, Ltd., Hitachi Tokyo Electronics Co., Ltd.
    Inventors: Yasuhiro Mitsui, Keiji Hasumi, Shinichiro Watase, Katsumi Kuriyama, Kazuo Nakano
  • Patent number: RE47684
    Abstract: Disclosed is a cytoprotective agent for use with respect to ischemic damage, including as an active ingredient a triprenyl phenol compound represented by the following general formula (I), wherein X is —CHY—C(CH3)2Z, Y and Z are each independently —H or —OH, or jointly form a single bond, and R represents a hydrogen atom or a substituent with a molecular weight of 1000 or less.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: November 5, 2019
    Assignee: TMS CO., LTD.
    Inventors: Honda Kazuo, Terumasa Hashimoto, Keita Shibata, Keiko Hasegawa, Keiji Hasumi
  • Patent number: RE49351
    Abstract: Disclosed is a cytoprotective agent for use with respect to ischemic damage, including as an active ingredient a triprenyl phenol compound represented by the following general formula (I), wherein X is —CHY—C(CH3)2Z, Y and Z are each independently —H or —OH, or jointly form a single bond, and R represents a hydrogen atom or a substituent with a molecular weight of 1000 or less.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: January 3, 2023
    Assignee: Biogen MA Inc.
    Inventors: Kazuo Honda, Terumasa Hashimoto, Keita Shibata, Keiko Hasegawa, Keiji Hasumi