Patents by Inventor Koji Maehana

Koji Maehana 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: 11567076
    Abstract: The object is to provide a lysis method, lysis treatment solution, detection method using an immunochromatographic device, and detection kit comprising an immunochromatographic device for detecting whether causative bacteria of mastitis are coliform bacteria or not by using milk of a livestock animal. There is provided a method for lysing coliform bacteria, which comprises the step of mixing a lysis agent containing a lytic enzyme, and at least one kind of anionic surfactant, and preferably further containing at least one kind of nonionic surfactant, with milk obtained form a livestock animal to lyse coliform bacteria existing in the milk. The lytic enzyme is preferably lysozyme.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: January 31, 2023
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji Maehana, Kenji Matsuyama
  • Publication number: 20220042990
    Abstract: An object of the present invention is to elucidate the cause of degradation of the reliability of detecting causative bacteria of environmental mastitis such as Escherichia coli, Klebsiella bacteria, Streptococcus bacteria, and CNS, and to provide a highly reliable detection means. Another object of the present invention is to provide a highly reliable detection means based on the immunochromatographic method, which enables quicker determination compared with the cultivation-based method, and a diagnosis kit using it.
    Type: Application
    Filed: November 29, 2019
    Publication date: February 10, 2022
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventor: Koji MAEHANA
  • Patent number: 10908160
    Abstract: The object is to provide a lysis method and lysis treatment solution for efficiently lysing cells of various Streptococcus bacteria in milk of a livestock animal to release a specific antigen substance contained in the cells for detecting whether causative bacterium of mastitis is a Streptococcus bacterium or not by using the milk, as well as a detection method using an immunochromatographic device. There is provided a method for lysing a Streptococcus bacterium, which comprises the step of mixing a lysis agent containing a lytic enzyme with milk obtained form a livestock animal to lyse a Streptococcus bacterium existing in the milk. The lytic enzyme is preferably at least one selected from the group consisting of lysozyme, labiase, and ?-N-acetylglucosaminidase.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: February 2, 2021
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Takamitsu Utsumi, Koji Maehana, Kenji Matsuyama
  • Patent number: 10732179
    Abstract: The object is to provide a lysis method, lysis treatment solution, detection method using an immunochromatographic device, and detection kit comprising an immunochromatographic device for detecting whether causative bacterium of mastitis is a staphylococcus or not by using milk of a livestock animal. There is provided a method for lysing a staphylococcus, which comprises the step of mixing a lysis agent containing a lytic enzyme, and at least one kind of ampholytic surfactant, and preferably further containing at least one kind of nonionic surfactant, with milk obtained form a livestock animal to lyse a staphylococcus existing in the milk. The lytic enzyme is preferably lysostaphin.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: August 4, 2020
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji Maehana, Kenji Matsuyama
  • Publication number: 20200103405
    Abstract: The object is to provide a lysis method and lysis treatment solution for efficiently lysing cells of various Streptococcus bacteria in milk of a livestock animal to release a specific antigen substance contained in the cells for detecting whether causative bacterium of mastitis is a Streptococcus bacterium or not by using the milk, as well as a detection method using an immunochromatographic device. There is provided a method for lysing a Streptococcus bacterium, which comprises the step of mixing a lysis agent containing a lytic enzyme with milk obtained form a livestock animal to lyse a Streptococcus bacterium existing in the milk. The lytic enzyme is preferably at least one selected from the group consisting of lysozyme, labiase, and ?-N-acetylglucosaminidase.
    Type: Application
    Filed: December 3, 2019
    Publication date: April 2, 2020
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Takamitsu UTSUMI, Koji MAEHANA, Kenji MATSUYAMA
  • Patent number: 10545146
    Abstract: An immunochromatographic method for detecting a specific substance contained in milk, which comprises (1) the step of contacting the milk with a test strip having a first part retaining a labeled first antibody directed to the specific substance or the specific substance that is labeled, a second part disposed downstream from the first part, on which a second antibody directed to the specific substance is immobilized, and a third part disposed upstream from the first part or the second part and having voids enabling removal of milk fat globules contained in the milk, at the third part or a further upstream part, and (2) the step of flowing the milk up to the second part or a further downstream part to obtain a detectable signal of the label at the second part or a further downstream part.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: January 28, 2020
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji Maehana, Kenji Matsuyama
  • Patent number: 10527616
    Abstract: The object is to provide a lysis method, lysis treatment solution, detection method using an immunochromatographic device, and detection kit comprising an immunochromatographic device for detecting whether causative bacterium of mastitis is a staphylococcus or not by using milk of a livestock animal. There is provided a method for lysing a staphylococcus, which comprises the step of mixing a lysis agent containing a lytic enzyme, and at least one kind of ampholytic surfactant, and preferably further containing at least one kind of nonionic surfactant, with milk obtained form a livestock animal to lyse a staphylococcus existing in the milk. The lytic enzyme is preferably lysostaphin.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: January 7, 2020
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji Maehana, Kenji Matsuyama
  • Patent number: 10527617
    Abstract: The object is to provide a lysis method and lysis treatment solution for efficiently lysing cells of various Streptococcus bacteria in milk of a livestock animal to release a specific antigen substance contained in the cells for detecting whether causative bacterium of mastitis is a Streptococcus bacterium or not by using the milk, as well as a detection method using an immunochromatographic device. There is provided a method for lysing a Streptococcus bacterium, which comprises the step of mixing a lysis agent containing a lytic enzyme with milk obtained form a livestock animal to lyse a Streptococcus bacterium existing in the milk. The lytic enzyme is preferably at least one selected from the group consisting of lysozyme, labiase, and ?-N-acetylglucosaminidase.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: January 7, 2020
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Takamitsu Utsumi, Koji Maehana, Kenji Matsuyama
  • Publication number: 20190317093
    Abstract: The object is to provide a lysis method, lysis treatment solution, detection method using an immunochromatographic device, and detection kit comprising an immunochromatographic device for detecting whether causative bacteria of mastitis are coliform bacteria or not by using milk of a livestock animal. There is provided a method for lysing coliform bacteria, which comprises the step of mixing a lysis agent containing a lytic enzyme, and at least one kind of anionic surfactant, and preferably further containing at least one kind of nonionic surfactant, with milk obtained form a livestock animal to lyse coliform bacteria existing in the milk. The lytic enzyme is preferably lysozyme.
    Type: Application
    Filed: June 3, 2019
    Publication date: October 17, 2019
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji MAEHANA, Kenji MATSUYAMA
  • Patent number: 10345299
    Abstract: The object is to provide a lysis method, lysis treatment solution, detection method using an immunochromatographic device, and detection kit comprising an immunochromatographic device for detecting whether causative bacteria of mastitis are coliform bacteria or not by using milk of a livestock animal. There is provided a method for lysing coliform bacteria, which comprises the step of mixing a lysis agent containing a lytic enzyme, and at least one kind of anionic surfactant, and preferably further containing at least one kind of nonionic surfactant, with milk obtained form a livestock animal to lyse coliform bacteria existing in the milk. The lytic enzyme is preferably lysozyme.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: July 9, 2019
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji Maehana, Kenji Matsuyama
  • Publication number: 20190079089
    Abstract: The object is to provide a lysis method, lysis treatment solution, detection method using an immunochromatographic device, and detection kit comprising an immunochromatographic device for detecting whether causative bacterium of mastitis is a staphylococcus or not by using milk of a livestock animal. There is provided a method for lysing a staphylococcus, which comprises the step of mixing a lysis agent containing a lytic enzyme, and at least one kind of ampholytic surfactant, and preferably further containing at least one kind of nonionic surfactant, with milk obtained form a livestock animal to lyse a staphylococcus existing in the milk. The lytic enzyme is preferably lysostaphin.
    Type: Application
    Filed: November 8, 2018
    Publication date: March 14, 2019
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji MAEHANA, Kenji MATSUYAMA
  • Publication number: 20190064163
    Abstract: The object is to provide a lysis method and lysis treatment solution for efficiently lysing cells of various Streptococcus bacteria in milk of a livestock animal to release a specific antigen substance contained in the cells for detecting whether causative bacterium of mastitis is a Streptococcus bacterium or not by using the milk, as well as a detection method using an immunochromatographic device. There is provided a method for lysing a Streptococcus bacterium, which comprises the step of mixing a lysis agent containing a lytic enzyme with milk obtained form a livestock animal to lyse a Streptococcus bacterium existing in the milk. The lytic enzyme is preferably at least one selected from the group consisting of lysozyme, labiase, and ?-N-acetylglucosaminidase.
    Type: Application
    Filed: October 31, 2018
    Publication date: February 28, 2019
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Takamitsu UTSUMI, Koji MAEHANA, Kenji MATSUYAMA
  • Publication number: 20190049446
    Abstract: The object is to provide a lysis method, lysis treatment solution, detection method using an immunochromatographic device, and detection kit comprising an immunochromatographic device for detecting whether causative bacterium of mastitis is a staphylococcus or not by using milk of a livestock animal. There is provided a method for lysing a staphylococcus, which comprises the step of mixing a lysis agent containing a lytic enzyme, and at least one kind of ampholytic surfactant, and preferably further containing at least one kind of nonionic surfactant, with milk obtained form a livestock animal to lyse a staphylococcus existing in the milk. The lytic enzyme is preferably lysostaphin.
    Type: Application
    Filed: October 18, 2018
    Publication date: February 14, 2019
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji MAEHANA, Kenji MATSUYAMA
  • Patent number: 10151751
    Abstract: The object is to provide a lysis method, lysis treatment solution, detection method using an immunochromatographic device, and detection kit comprising an immunochromatographic device for detecting whether causative bacterium of mastitis is a staphylococcus or not by using milk of a livestock animal. There is provided a method for lysing a staphylococcus, which comprises the step of mixing a lysis agent containing a lytic enzyme, and at least one kind of ampholytic surfactant, and preferably further containing at least one kind of nonionic surfactant, with milk obtained form a livestock animal to lyse a staphylococcus existing in the milk. The lytic enzyme is preferably lysostaphin.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: December 11, 2018
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji Maehana, Kenji Matsuyama
  • Patent number: 10139409
    Abstract: The object is to provide a lysis method and lysis treatment solution for efficiently lysing cells of various Streptococcus bacteria in milk of a livestock animal to release a specific antigen substance contained in the cells for detecting whether causative bacterium of mastitis is a Streptococcus bacterium or not by using the milk, as well as a detection method using an immunochromatographic device. There is provided a method for lysing a Streptococcus bacterium, which comprises the step of mixing a lysis agent containing a lytic enzyme with milk obtained form a livestock animal to lyse a Streptococcus bacterium existing in the milk. The lytic enzyme is preferably at least one selected from the group consisting of lysozyme, labiase, and ?-N-acetylglucosaminidase.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: November 27, 2018
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Takamitsu Utsumi, Koji Maehana, Kenji Matsuyama
  • Publication number: 20180321239
    Abstract: An immunochromatographic method for detecting a specific substance contained in milk, which comprises (1) the step of contacting the milk with a test strip having a first part retaining a labeled first antibody directed to the specific substance or the specific substance that is labeled, a second part disposed downstream from the first part, on which a second antibody directed to the specific substance is immobilized, and a third part disposed upstream from the first part or the second part and having voids enabling removal of milk fat globules contained in the milk, at the third part or a further upstream part, and (2) the step of flowing the milk up to the second part or a further downstream part to obtain a detectable signal of the label at the second part or a further downstream part.
    Type: Application
    Filed: July 6, 2018
    Publication date: November 8, 2018
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji MAEHANA, Kenji MATSUYAMA
  • Patent number: 10048262
    Abstract: An immunochromatographic method for detecting a specific substance contained in milk, which comprises (1) the step of contacting the milk with a test strip having a first part retaining a labeled first antibody directed to the specific substance or the specific substance that is labeled, a second part disposed downstream from the first part, on which a second antibody directed to the specific substance is immobilized, and a third part disposed upstream from the first part or the second part and having voids enabling removal of milk fat globules contained in the milk, at the third part or a further upstream part, and (2) the step of flowing the milk up to the second part or a further downstream part to obtain a detectable signal of the label at the second part or a further downstream part.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: August 14, 2018
    Assignee: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji Maehana, Kenji Matsuyama
  • Publication number: 20160320387
    Abstract: The object is to provide a lysis method, lysis treatment solution, detection method using an immunochromatographic device, and detection kit comprising an immunochromatographic device for detecting whether causative bacteria of mastitis are coliform bacteria or not by using milk of a livestock animal. There is provided a method for lysing coliform bacteria, which comprises the step of mixing a lysis agent containing a lytic enzyme, and at least one kind of anionic surfactant, and preferably further containing at least one kind of nonionic surfactant, with milk obtained form a livestock animal to lyse coliform bacteria existing in the milk. The lytic enzyme is preferably lysozyme.
    Type: Application
    Filed: December 17, 2014
    Publication date: November 3, 2016
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji MAEHANA, Kenji MATSUYAMA
  • Publication number: 20160313328
    Abstract: The object is to provide a lysis method and lysis treatment solution for efficiently lysing cells of various Streptococcus bacteria in milk of a livestock animal to release a specific antigen substance contained in the cells for detecting whether causative bacterium of mastitis is a Streptococcus bacterium or not by using the milk, as well as a detection method using an immunochromatographic device. There is provided a method for lysing a Streptococcus bacterium, which comprises the step of mixing a lysis agent containing a lytic enzyme with milk obtained form a livestock animal to lyse a Streptococcus bacterium existing in the milk. The lytic enzyme is preferably at least one selected from the group consisting of lysozyme, labiase, and ?-N-acetylglucosaminidase.
    Type: Application
    Filed: December 17, 2014
    Publication date: October 27, 2016
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Takamitsu UTSUMI, Koji MAEHANA, Kenji MATSUYAMA
  • Publication number: 20160313327
    Abstract: The object is to provide a lysis method, lysis treatment solution, detection method using an immunochromatographic device, and detection kit comprising an immunochromatographic device for detecting whether causative bacterium of mastitis is a staphylococcus or not by using milk of a livestock animal. There is provided a method for lysing a staphylococcus, which comprises the step of mixing a lysis agent containing a lytic enzyme, and at least one kind of ampholytic surfactant, and preferably further containing at least one kind of nonionic surfactant, with milk obtained form a livestock animal to lyse a staphylococcus existing in the milk. The lytic enzyme is preferably lysostaphin.
    Type: Application
    Filed: December 17, 2014
    Publication date: October 27, 2016
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Koji MAEHANA, Kenji MATSUYAMA