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).
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Patent number: 11567076Abstract: 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: GrantFiled: June 3, 2019Date of Patent: January 31, 2023Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji Maehana, Kenji Matsuyama
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Publication number: 20220042990Abstract: 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: ApplicationFiled: November 29, 2019Publication date: February 10, 2022Applicant: ASAHI KASEI KABUSHIKI KAISHAInventor: Koji MAEHANA
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Patent number: 10908160Abstract: 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: GrantFiled: December 3, 2019Date of Patent: February 2, 2021Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Takamitsu Utsumi, Koji Maehana, Kenji Matsuyama
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Patent number: 10732179Abstract: 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: GrantFiled: October 18, 2018Date of Patent: August 4, 2020Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji Maehana, Kenji Matsuyama
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Publication number: 20200103405Abstract: 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: ApplicationFiled: December 3, 2019Publication date: April 2, 2020Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Takamitsu UTSUMI, Koji MAEHANA, Kenji MATSUYAMA
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Patent number: 10545146Abstract: 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: GrantFiled: July 6, 2018Date of Patent: January 28, 2020Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji Maehana, Kenji Matsuyama
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Patent number: 10527616Abstract: 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: GrantFiled: November 8, 2018Date of Patent: January 7, 2020Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji Maehana, Kenji Matsuyama
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Patent number: 10527617Abstract: 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: GrantFiled: October 31, 2018Date of Patent: January 7, 2020Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Takamitsu Utsumi, Koji Maehana, Kenji Matsuyama
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Publication number: 20190317093Abstract: 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: ApplicationFiled: June 3, 2019Publication date: October 17, 2019Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji MAEHANA, Kenji MATSUYAMA
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Patent number: 10345299Abstract: 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: GrantFiled: December 17, 2014Date of Patent: July 9, 2019Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji Maehana, Kenji Matsuyama
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Publication number: 20190079089Abstract: 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: ApplicationFiled: November 8, 2018Publication date: March 14, 2019Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji MAEHANA, Kenji MATSUYAMA
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Publication number: 20190064163Abstract: 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: ApplicationFiled: October 31, 2018Publication date: February 28, 2019Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Takamitsu UTSUMI, Koji MAEHANA, Kenji MATSUYAMA
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Publication number: 20190049446Abstract: 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: ApplicationFiled: October 18, 2018Publication date: February 14, 2019Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji MAEHANA, Kenji MATSUYAMA
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Patent number: 10151751Abstract: 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: GrantFiled: December 17, 2014Date of Patent: December 11, 2018Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji Maehana, Kenji Matsuyama
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Patent number: 10139409Abstract: 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: GrantFiled: December 17, 2014Date of Patent: November 27, 2018Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Takamitsu Utsumi, Koji Maehana, Kenji Matsuyama
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Publication number: 20180321239Abstract: 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: ApplicationFiled: July 6, 2018Publication date: November 8, 2018Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji MAEHANA, Kenji MATSUYAMA
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Patent number: 10048262Abstract: 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: GrantFiled: June 13, 2012Date of Patent: August 14, 2018Assignee: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji Maehana, Kenji Matsuyama
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Publication number: 20160320387Abstract: 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: ApplicationFiled: December 17, 2014Publication date: November 3, 2016Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji MAEHANA, Kenji MATSUYAMA
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Publication number: 20160313328Abstract: 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: ApplicationFiled: December 17, 2014Publication date: October 27, 2016Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Takamitsu UTSUMI, Koji MAEHANA, Kenji MATSUYAMA
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Publication number: 20160313327Abstract: 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: ApplicationFiled: December 17, 2014Publication date: October 27, 2016Applicant: ASAHI KASEI KABUSHIKI KAISHAInventors: Koji MAEHANA, Kenji MATSUYAMA