Patents by Inventor Hiroyuki Chiku

Hiroyuki Chiku 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: 11821896
    Abstract: An object of the present invention is to provide a kit and a method which are capable of measuring a measurement target substance in a biological sample with high precision in a measurement range from a low concentration range to a high concentration range. According to the present invention, there is provided a kit for measuring a measurement target substance in a biological sample, including a labeled particle having a first binding substance capable of binding to a measurement target substance in a biological sample, and a substrate having a second binding substance capable of binding to any one of the measurement target substance or the first binding substance, in which the labeled particle is a luminescent labeled particle containing at least one kind of compound represented by Formula (1) and a particle. Each symbol in Formula (1) has the meaning described in the present specification.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: November 21, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Chiku, Kousuke Watanabe, Kazuhei Kaneko, Kazuhiro Hamada, Kouitsu Sasaki, Tomoaki Yoshioka, Naoyuki Hanaki
  • Patent number: 11733244
    Abstract: An object of the present invention is to provide a kit, a method, and a reagent which prevent the problem of false positive due to nonspecific adsorption, suppress the increase in noise to be generated, and are capable of achieving high-precision measurement of a measurement target substance in a wide concentration range from a low concentration to a high concentration.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: August 22, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Chiku, Kousuke Watanabe, Kazuhei Kaneko, Kazuhiro Hamada, Kouitsu Sasaki, Tomoaki Yoshioka, Naoyuki Hanaki
  • Patent number: 11674966
    Abstract: An object of the present invention is to provide a kit and a method which are capable of measuring a measurement target substance in a biological sample with high precision in a measurement range from a low concentration range to a high concentration range. According to the present invention, there is provided a kit for measuring a measurement target substance in a biological sample, including a labeled particle having a first binding substance capable of binding to a measurement target substance in a biological sample, and a substrate having a second binding substance capable of binding to any one of the measurement target substance or the first binding substance, in which the labeled particle is a luminescent labeled particle containing at least one kind of compound represented by Formula (1) and a particle. Each symbol in Formula (1) has the meaning described in the present specification.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: June 13, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Chiku, Tomoaki Yoshioka, Kousuke Watanabe, Kazuhiro Hamada, Kouitsu Sasaki
  • Patent number: 11674954
    Abstract: An object of the present invention is to provide a kit and a method capable of achieving high-precision measurement of a measurement target substance in a biological sample in a wide concentration range from a low concentration to a high concentration. According to the present invention, there is provided a kit for measuring a measurement target substance in a biological sample, the kit including: a labeled particle having a first binding substance capable of binding to the measurement target substance in a biological sample and having a first blocking agent; and a substrate having a second binding substance capable of binding to any one of the measurement target substance or the first binding substance and having a second blocking agent, in which the labeled particle is a luminescent labeled particle containing at least one kind of compound represented by Formula (1) and a particle, and the first blocking agent and the second blocking agent are different from each other.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: June 13, 2023
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Chiku, Kousuke Watanabe, Kazuhei Kaneko, Kazuhiro Hamada, Kouitsu Sasaki, Tomoaki Yoshioka, Naoyuki Hanaki
  • Patent number: 11519860
    Abstract: An object of the present invention is to provide a kit, a method, and a reagent which prevent the problem of false positive due to nonspecific adsorption, suppress the increase in noise to be generated, and are capable of achieving high-precision measurement of a measurement target substance in a wide concentration range from a low concentration to a high concentration.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: December 6, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Chiku, Tomoaki Yoshioka, Kousuke Watanabe, Kazuhiro Hamada, Kouitsu Sasaki
  • Patent number: 11486879
    Abstract: An object of the present invention is to provide a kit and a method capable of achieving high-precision measurement of a measurement target substance in a biological sample in a wide concentration range from a low concentration to a high concentration by sufficiently avoiding the influence of antibodies such as anti-serum albumin antibody present in blood.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: November 1, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Chiku, Tomoaki Yoshioka, Kousuke Watanabe, Kazuhiro Hamada, Kouitsu Sasaki
  • Patent number: 11255849
    Abstract: An object of the present invention is to provide a kit in which a quantitative determination of a substance to be measured in a biological sample can be carried out with high accuracy, even in a case where the substance to be measured includes a plurality of substances having different structures.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: February 22, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Chiku, Noriyuki Kasagi
  • Publication number: 20210208138
    Abstract: An object of the present invention is to provide a composite particle for an immunochromatography which has excellent spreadability, a method for manufacturing the same, and an immunochromatography using the composite particle for an immunochromatography. A composite particle for an immunochromatography of the present invention is a composite particle for an immunochromatography in which magnetic particles having an average particle size of 500 nm or less and gold particles having an average particle size of 500 nm or less are bound via an organic substance.
    Type: Application
    Filed: March 18, 2021
    Publication date: July 8, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Yoshihiro ABURAYA, Naoyuki NISHIKAWA, Junichi KATADA, Hiroyuki CHIKU, Ayumi ERA
  • Patent number: 10883986
    Abstract: An object of the present invention is to provide a kit for quantitatively determining a bile acid, in which it is possible to improve measurement accuracy by sufficiently dissociating the bile acid from a polymer component, and to rapidly carry out the quantitative determination of the bile acid with high accuracy under various environments, and a method for quantitatively determining the bile acid. According to the present invention, a kit for quantitatively determining a bile acid in a biological sample, including a compound represented by General Formula (I) defined in the present specification in a dry state; a fluorescent particle that has a first binding substance capable of binding to the bile acid; and a substrate that has a detection region having a second binding substance capable of binding to any one of the bile acid and the first binding substance, is provided.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: January 5, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Noriyuki Kasagi, Hiroyuki Chiku, Ayumi Era
  • Publication number: 20200378962
    Abstract: An object of the present invention is to provide a kit, a method, and a reagent which prevent the problem of false positive due to nonspecific adsorption, suppress the increase in noise to be generated, and are capable of achieving high-precision measurement of progesterone in a wide concentration range from a low concentration to a high concentration, in the measurement of progesterone in a biological sample.
    Type: Application
    Filed: August 21, 2020
    Publication date: December 3, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hiroyuki CHIKU, Takeru SHIGEMURA, Kousuke WATANABE, Yoshinori KANAZAWA, Kouitsu SASAKI, Kazuhei KANEKO
  • Patent number: 10816469
    Abstract: An object of the present invention is to provide a kit and a method by which a quantitative determination of a substance to be measured in a biological sample can be carried out with high accuracy while avoiding the influence of an antibody such as an anti-serum albumin antibody present in blood. According to the present invention, a kit for quantitatively determining a substance to be measured in a biological sample, the kit including: a labeled particle that has a first binding substance capable of binding to the substance to be measured, and a first blocking agent; and a substrate that has a detection region having a second binding substance capable of binding to any one of the substance to be measured and the first binding substance, and a second blocking agent, in which the first blocking agent and the second blocking agent are different from each other, is provided.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: October 27, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Noriyuki Kasagi, Hiroyuki Chiku
  • Publication number: 20200096445
    Abstract: An object of the present invention is to provide a kit, a method, and a reagent which prevent the problem of false positive due to nonspecific adsorption, suppress the increase in noise to be generated, and are capable of achieving high-precision measurement of a measurement target substance in a wide concentration range from a low concentration to a high concentration.
    Type: Application
    Filed: September 27, 2019
    Publication date: March 26, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hiroyuki CHIKU, Tomoaki YOSHIOKA, Kousuke WATANABE, Kazuhiro HAMADA, Kouitsu SASAKI
  • Publication number: 20200033334
    Abstract: An object of the present invention is to provide a kit and a method capable of achieving high-precision measurement of a measurement target substance in a biological sample in a wide concentration range from a low concentration to a high concentration. According to the present invention, there is provided a kit for measuring a measurement target substance in a biological sample, the kit including: a labeled particle having a first binding substance capable of binding to the measurement target substance in a biological sample and having a first blocking agent; and a substrate having a second binding substance capable of binding to any one of the measurement target substance or the first binding substance and having a second blocking agent, in which the labeled particle is a luminescent labeled particle containing at least one kind of compound represented by Formula (1) and a particle, and the first blocking agent and the second blocking agent are different from each other.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 30, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hiroyuki CHIKU, Kousuke WATANABE, Kazuhei KANEKO, Kazuhiro HAMADA, Kouitsu SASAKI, Tomoaki YOSHIOKA, Naoyuki HANAKI
  • Publication number: 20200025770
    Abstract: An object of the present invention is to provide a kit and a method capable of achieving high-precision measurement of a measurement target substance in a biological sample in a wide concentration range from a low concentration to a high concentration by sufficiently avoiding the influence of antibodies such as anti-serum albumin antibody present in blood.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 23, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hiroyuki CHIKU, Tomoaki YOSHIOKA, Kousuke WATANABE, Kazuhiro HAMADA, Kouitsu SASAKI
  • Publication number: 20200025748
    Abstract: An object of the present invention is to provide a kit and a method which are capable of measuring a measurement target substance in a biological sample with high precision in a measurement range from a low concentration range to a high concentration range. According to the present invention, there is provided a kit for measuring a measurement target substance in a biological sample, including a labeled particle having a first binding substance capable of binding to a measurement target substance in a biological sample, and a substrate having a second binding substance capable of binding to any one of the measurement target substance or the first binding substance, in which the labeled particle is a luminescent labeled particle containing at least one kind of compound represented by Formula (1) and a particle. Each symbol in Formula (1) has the meaning described in the present specification.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hiroyuki Chiku, Kousuke Watanabe, Kazuhei Kaneko, Kazuhiro Hamada, Kouitsu Sasaki, Tomoaki Yoshioka, Naoyuki Hanaki
  • Publication number: 20200025771
    Abstract: An object of the present invention is to provide a kit, a method, and a reagent which prevent the problem of false positive due to nonspecific adsorption, suppress the increase in noise to be generated, and are capable of achieving high-precision measurement of a measurement target substance in a wide concentration range from a low concentration to a high concentration.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hiroyuki CHIKU, Kousuke WATANABE, Kazuhei KANEKO, Kazuhiro HAMADA, Kouitsu SASAKI, Tomoaki YOSHIOKA, Naoyuki HANAKI
  • Publication number: 20200018765
    Abstract: An object of the present invention is to provide a kit and a method which are capable of measuring a measurement target substance in a biological sample with high precision in a measurement range from a low concentration range to a high concentration range. According to the present invention, there is provided a kit for measuring a measurement target substance in a biological sample, including a labeled particle having a first binding substance capable of binding to a measurement target substance in a biological sample, and a substrate having a second binding substance capable of binding to any one of the measurement target substance or the first binding substance, in which the labeled particle is a luminescent labeled particle containing at least one kind of compound represented by Formula (1) and a particle. Each symbol in Formula (1) has the meaning described in the present specification.
    Type: Application
    Filed: September 26, 2019
    Publication date: January 16, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Hiroyuki Chiku, Tomoaki Yoshioka, Kousuke Watanabe, Kazuhiro Hamada, Kouitsu Sasaki
  • Publication number: 20180372737
    Abstract: An object of the present invention is to provide a kit for quantitatively determining a bile acid, in which it is possible to improve measurement accuracy by sufficiently dissociating the bile acid from a polymer component, and to rapidly carry out the quantitative determination of the bile acid with high accuracy under various environments, and a method for quantitatively determining the bile acid. According to the present invention, a kit for quantitatively determining a bile acid in a biological sample, including a compound represented by General Formula (I) defined in the present specification in a dry state; a fluorescent particle that has a first binding substance capable of binding to the bile acid; and a substrate that has a detection region having a second binding substance capable of binding to any one of the bile acid and the first binding substance, is provided.
    Type: Application
    Filed: August 29, 2018
    Publication date: December 27, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Noriyuki KASAGI, Hiroyuki CHIKU, Ayumi ERA
  • Publication number: 20180372638
    Abstract: An object of the present invention is to provide a kit and a method by which a quantitative determination of a substance to be measured in a biological sample can be carried out with high accuracy while avoiding the influence of an antibody such as an anti-serum albumin antibody present in blood. According to the present invention, a kit for quantitatively determining a substance to be measured in a biological sample, the kit including: a labeled particle that has a first binding substance capable of binding to the substance to be measured, and a first blocking agent; and a substrate that has a detection region having a second binding substance capable of binding to any one of the substance to be measured and the first binding substance, and a second blocking agent, in which the first blocking agent and the second blocking agent are different from each other, is provided.
    Type: Application
    Filed: August 29, 2018
    Publication date: December 27, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Noriyuki KASAGI, Hiroyuki CHIKU
  • Publication number: 20180372731
    Abstract: An object of the present invention is to provide a kit in which a quantitative determination of a substance to be measured in a biological sample can be carried out with high accuracy, even in a case where the substance to be measured includes a plurality of substances having different structures.
    Type: Application
    Filed: August 29, 2018
    Publication date: December 27, 2018
    Applicant: FUJIFILM Corporation
    Inventors: Hiroyuki CHIKU, Noriyuki KASAGI