Patents by Inventor Takashi Miyazawa

Takashi Miyazawa 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: 11029622
    Abstract: Provided is a developer carrying member that enables stable formation of images of high quality even on recording paper having a high talc content. The developer carrying member includes a conductive base member and a surface layer, wherein the surface layer includes a urethane resin, and the urethane resin has a carbonate bond and a tertiary amine structure.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: June 8, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Sosuke Yamaguchi, Minoru Ito, Takashi Koyanagi, Takahiro Miyazawa, Shohei Urushihara, Kentarou Nakamura
  • Patent number: 10906921
    Abstract: A curing agent or a curing accelerator which is easy to synthesize and may cure an epoxy resin and the like, or may accelerate the curing is provided. A curing agent or a curing accelerator according to some embodiments of the present invention has a highly-coordinated silicon structure.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: February 2, 2021
    Assignee: TOYO GOSEI CO., LTD.
    Inventors: Takashi Miyazawa, Yuki Toma
  • Patent number: 10900970
    Abstract: An object of the present invention is to improve visibility by reducing background noise in order to accurately detect the signal from a target substance in an immunochromatographic device. The immunochromatographic device comprises a membrane having a detection region, to which an antibody or antigen serving as a capturing substance capable of capturing a target substance is immobilized, for detecting the target substance by using an antigen or antibody labeled with a labeling carrier that is a colored particle to form a complex of the capturing substance-target substance-labeled antigen or antibody in the capturing substance-immobilized detection region on the device, based on color of the labeling carrier, wherein a colorant having a color complementary to the color of the labeling carrier is allowed to be contained in a dry state in a constituent member of the device such that the colorant is developed together with a specimen when the specimen is developed on the device.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: January 26, 2021
    Assignee: Denka Company Limited
    Inventors: Osamu Ishikawa, Risa Kohiyama, Takashi Miyazawa
  • Patent number: 10883985
    Abstract: Disclosed is an immunochromatographic test strip by which the influences by the interfering substances in the immunochromatography method, contained in test samples, are reduced, so that it enables to accurately and specifically measure a test substance in a test sample irrespective of the amount of the test sample supplied to the assay, and to provide an immunochromatography method using the immunochromatographic test strip. The immunochromatographic test strip includes, in the order from upstream, a sample pad, a labeled substance region, a detection region and an absorption band, wherein a polymer(s) in which hydrophobic cyclic monomer(s) having an ionic functional group(s) is/are polymerized is impregnated at a region(s) upstream of the labeled substance region.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: January 5, 2021
    Assignee: DENKA SEIKEN CO., LTD.
    Inventors: Risa Kohiyama, Osamu Ishikawa, Yuki Shinohara, Takashi Miyazawa
  • Patent number: 10800715
    Abstract: A long life catalyst is provided that is conveniently and inexpensively capable of being produced and that is highly active and has inhibited metal leakage. According to aspects of the present invention, a catalyst is provided that includes: a polymer including a plurality of first structural units and a plurality of second structural units; and metal acting as a catalytic center, wherein at least part of the metal is covered with the polymer, each of the plurality of first structural units has a first atom constituting a main chain of the polymer and a first substituent group bonded to the first atom, a second atom included in each of the plurality of second structural units is bonded to the first atom, and the second atom is different from the first atom, or at least one of all substituent groups on the second atom is different from the first substituent group.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: October 13, 2020
    Assignee: TOYO GOSEI CO., LTD.
    Inventors: Takashi Miyazawa, Shin-ya Tashita
  • Publication number: 20200312480
    Abstract: To provide a lead wire for narrow space insertion that is easily inserted into an elongated small-diameter pipe or small-diameter tube such as an ultrasonic probe or an electrode catheter. The above-described problem is solved by a lead wire for narrow space insertion including a copper alloy wire having a conductor diameter within a range of 0.015 to 0.18 mm, and an insulating layer provided to an outer periphery of the copper alloy wire. A friction coefficient of an outermost surface layer of the insulating layer is within a range of 0.05 to 0.3, a tensile strength of the lead wire is within a range of 700 to 1,500 MPa, and a conductivity of the copper alloy wire is within a range of 60 to 90% IACS.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Applicant: TOTOKU ELECTRIC CO., LTD.
    Inventors: Kenji SAKA, Hikaru YAMAKOSHI, Takashi MIYAZAWA
  • Publication number: 20200290018
    Abstract: A long-life catalyst which can be easily and inexpensively manufactured and has high activity and suppressed leakage of metal. A catalyst according to some embodiments includes: a substrate; and a first metal atom as a catalytic center. The substrate contains a non-metallic atom and a second metal atom, and the non-metallic atom is any one selected from the group consisting of a group 15 element, a group 16 element and a group 17 element.
    Type: Application
    Filed: March 10, 2017
    Publication date: September 17, 2020
    Applicant: TOYO GOSEI CO., LTD.
    Inventors: Shin-ya TASHITA, Takashi MIYAZAWA
  • Patent number: 10730037
    Abstract: Synthesis of organic compounds that has chirality is an important technique in the fields of pharmaceuticals, agrichemicals, health foods and the like. However, raw materials of a catalyst used for the synthesis of such compounds are expensive, and the synthesis needs many steps, so that it is difficult to reduce the cost. Linking a catalyst center to a polymer chain or a resin through an organic group enables to use the catalyst repeatedly and produce a chiral compound at low cost.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: August 4, 2020
    Assignee: TOYO GOSEI CO., LTD.
    Inventors: Takashi Miyazawa, Ken-ichi Sakaguchi
  • Patent number: 10527618
    Abstract: Means for enabling an immunoassay with a sufficient sensitivity in an immunoassay for measuring influenza virus in a sample using influenza virus M1 protein as an antigen is provided. A sample processing method in an immunoassay for influenza virus, which method comprises, in an immunoassay for influenza virus using an antibody which undergoes antigen-antibody reaction with influenza virus matrix 1 protein, or an antigen-binding fragment thereof, bringing a sample containing influenza virus into contact with a sample processing liquid containing a surfactant having at least one group selected from the group consisting of palmityl, stearyl, and oleyl, is provided.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: January 7, 2020
    Assignee: DENKA SEIKEN CO., LTD.
    Inventors: Yuki Shinohara, Takashi Miyazawa
  • Publication number: 20190361029
    Abstract: The object of the present invention is to provide insoluble carrier particles used for high-sensitivity rapid immunoassay, which allow visual observation and high-sensitivity apparatus measurement. The insoluble carrier particles are visible colored insoluble carrier particles labeled with a fluorescent dye, which are used for immunoassay, wherein absorption of fluorescence by the visible colored insoluble carrier particles is low within a wavelength range of fluorescence emitted by the fluorescent dye.
    Type: Application
    Filed: August 2, 2019
    Publication date: November 28, 2019
    Applicant: Denka Seiken Co., Ltd.
    Inventor: Takashi Miyazawa
  • Publication number: 20190330247
    Abstract: A curing agent or a curing accelerator which is easy to synthesize and may cure an epoxy resin and the like, or may accelerate the curing is provided. A curing agent or a curing accelerator according to some embodiments of the present invention has a highly-coordinated silicon structure.
    Type: Application
    Filed: May 10, 2017
    Publication date: October 31, 2019
    Applicant: TOYO GOSEI CO., LTD.
    Inventors: Takashi MIYAZAWA, Yuki TOMA
  • Publication number: 20190277838
    Abstract: The present invention intends to provide an immunochromatographic test piece that makes it possible to achieve both highly sensitive detection of a substance to be detected and a simple test piece structure, which are usually difficult to be made compatible with each other.
    Type: Application
    Filed: May 23, 2019
    Publication date: September 12, 2019
    Applicant: Denka Seiken Co., Ltd.
    Inventors: Risa Kohiyama, Osamu ISHIKAWA, Takashi MIYAZAWA
  • Publication number: 20190263728
    Abstract: A long life catalyst is provided that is conveniently and inexpensively capable of being produced and that is highly active and has inhibited metal leakage. According to aspects of the present invention, a catalyst is provided that includes: a polymer including a plurality of first structural units and a plurality of second structural units; and metal acting as a catalytic center, wherein at least part of the metal is covered with the polymer, each of the plurality of first structural units has a first atom constituting a main chain of the polymer and a first substituent group bonded to the first atom, a second atom included in each of the plurality of second structural units is bonded to the first atom, and the second atom is different from the first atom, or at least one of all substituent groups on the second atom is different from the first substituent group.
    Type: Application
    Filed: May 10, 2019
    Publication date: August 29, 2019
    Applicant: TOYO GOSEI CO., LTD.
    Inventors: Takashi MIYAZAWA, Shin-ya TASHITA
  • Patent number: 10345294
    Abstract: The present invention intends to provide an immunochromatographic test piece that makes it possible to achieve both highly sensitive detection of a substance to be detected and a simple test piece structure, which are usually difficult to be made compatible with each other.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: July 9, 2019
    Assignee: Denka Seiken Co., Ltd.
    Inventors: Risa Kohiyama, Osamu Ishikawa, Takashi Miyazawa
  • Patent number: 10308562
    Abstract: A long life catalyst is provided that is conveniently and inexpensively capable of being produced and that is highly active and has inhibited metal leakage. According to aspects of the present invention, a catalyst is provided that includes: a polymer including a plurality of first structural units and a plurality of second structural units; and metal acting as a catalytic center, wherein at least part of the metal is covered with the polymer, each of the plurality of first structural units has a first atom constituting a main chain of the polymer and a first substituent group bonded to the first atom, a second atom included in each of the plurality of second structural units is bonded to the first atom, and the second atom is different from the first atom, or at least one of all substituent groups on the second atom is different from the first substituent group.
    Type: Grant
    Filed: September 12, 2015
    Date of Patent: June 4, 2019
    Assignee: TOYO GOSEI CO., LTD.
    Inventors: Takashi Miyazawa, Shin-ya Tashita
  • Patent number: 10295533
    Abstract: The present invention provides a test kit capable of rapid and highly sensitive detection. The test kit is provided with a first member, which contains a region in which is held a labeling substance with a label immobilized on a substance that specifically binds with a substance to be detected, and a second member, which has a detection zone where the labeling substance is captured through the substance to be detected, which is connected downstream of the first member in the developing direction, and which allows the labeling substance contained in a liquid sample that flows in from the first member, to develop into the detection zone.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: May 21, 2019
    Assignee: Denka Seiken Co., Ltd.
    Inventors: Takashi Miyazawa, Yuki Shinohara
  • Publication number: 20190101532
    Abstract: Disclosed are an immunochromatographic test device which allows a target substance to be detected or quantified more rapidly and sensitively than conventional methods, and a method of forming a sample addition part of the test device. The method of forming a sample addition part of the immunochromatographic test device includes applying a surfactant that is in white powder form under normal conditions, such as sodium deoxycholate, to the sample addition part and drying it. The immunochromatographic test device includes the sample addition part formed by the method.
    Type: Application
    Filed: March 23, 2016
    Publication date: April 4, 2019
    Applicant: DENKA SEIKEN CO., LTD.
    Inventors: Yuki SHINOHARA, Miwa KUWAHARA, Hiroshi AKITA, Takashi MIYAZAWA
  • Publication number: 20180353946
    Abstract: Synthesis of organic compounds that has chirality is an important technique in the fields of pharmaceuticals, agrichemicals, health foods and the like. However, raw materials of a catalyst used for the synthesis of such compounds are expensive, and the synthesis needs many steps, so that it is difficult to reduce the cost. Linking a catalyst center to a polymer chain or a resin through an organic group enables to use the catalyst repeatedly and produce a chiral compound at low cost.
    Type: Application
    Filed: December 26, 2016
    Publication date: December 13, 2018
    Applicant: TOYO GOSEI CO., LTD.
    Inventors: Takashi MIYAZAWA, Ken-ichi SAKAGUCHI
  • Publication number: 20180172682
    Abstract: Disclosed is an immunochromatographic test strip by which the influences by the interfering substances in the immunochromatography method, contained in test samples, are reduced, so that it enables to accurately and specifically measure a test substance in a test sample irrespective of the amount of the test sample supplied to the assay, and to provide an immunochromatography method using the immunochromatographic test strip. The immunochromatographic test strip includes, in the order from upstream, a sample pad, a labeled substance region, a detection region and an absorption band, wherein a polymer(s) in which hydrophobic cyclic monomer(s) having an ionic functional group(s) is/are polymerized is impregnated at a region(s) upstream of the labeled substance region.
    Type: Application
    Filed: May 20, 2016
    Publication date: June 21, 2018
    Applicant: DENKA SEIKEN CO., LTD.
    Inventors: Risa KOHIYAMA, Osamu ISHIKAWA, Yuki SHINOHARA, Takashi MIYAZAWA
  • Publication number: 20180164316
    Abstract: Disclosed is a novel method of detecting a test subject by an immunoassay, in which low sensitivity due to using a monoclonal antibody is improved in spite of using a monoclonal antibody in the immunoassay. The method of detecting a test subject is a method of detecting a test subject having two or more kinds of antigens which enable detection of said test subject, which method is performed by an immunoassay such as a sandwich method, using a monoclonal antibody or an antigen-binding fragment thereof which recognizes the two or more kinds of antigens.
    Type: Application
    Filed: May 27, 2016
    Publication date: June 14, 2018
    Applicant: DENKA SEIKEN CO., LTD.
    Inventors: Risa KOHIYAMA, Takashi MIYAZAWA