Patents by Inventor Katsuya Yamada

Katsuya Yamada 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: 10921256
    Abstract: A multi-surface image acquisition system includes a multi-surface observation prism which includes one or more prisms and has a light path formed to collect surfaces in respective directions to be observed of a subject having a three-dimensional structure into one direction, in which a light path length is corrected by utilizing a difference in refractive index between glass and air to equalize a working distance of each surface. A light field camera expands a focal-depth adjustment range for two or more images focused on same plane through the prism. A three-dimensional subject can be observed in multiple directions at the same time, including an observation of cells.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: February 16, 2021
    Assignee: Hirosaki University
    Inventors: Katsuya Yamada, Kouki Ono, Yasushi Kojima, Terumasa Takamatsu
  • Patent number: 10551387
    Abstract: A cancer cell detection method that makes it possible to perform imaging of cells in a living state and a dual detection method for cancer cells in which the aforementioned method is combined with a pre-existing dyeing method for cytodiagnosis. The method uses living body-derived cells and includes: incubating living cells included in a sample taken from a person together with a fluorescently-labeled L-glucose derivative and detecting the fluorescently-labeled L-glucose derivative that is taken up into the cells; and detecting fluorescence emitted by the L-glucose derivative that is present within the cells while the cells are attached to a thin glass or plastic plate. Also provided is a dual detection method for cancer cells in which the cancer cell detection method that uses living body-derived cells is combined with a dyeing method using cells that are fixed using an alcohol or the like.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: February 4, 2020
    Assignee: HIROSAKI UNIVERSITY
    Inventors: Katsuya Yamada, Ayako Sasaki, Kouki Ono, Kiyoshi Tone
  • Patent number: 10509041
    Abstract: Provided is a glucose derivative, which is taken into cells via a membrane sugar transport system and is represented by formula (1). Also provided are an imaging agent and an imaging method for a cell or intracellular molecule using said glucose derivative. Further provided is a method for detecting cancer cells with good accuracy using said glucose derivative and an imaging agent to be used in said method. More specifically provided are D-glucose derivatives and L-glucose derivatives in which glucose is bound to the 7-position of a fluorescent molecular group with a coumarin backbone or a quinolone backbone. Also provided are a cell imaging agent and imaging method using the derivative. A cancer cell imaging agent and imaging method using the L-glucose derivative is also provided. G is a group selected from formulas (G1)-(G4) below.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: December 17, 2019
    Assignee: HIROSAKI UNIVERSITY
    Inventors: Katsuya Yamada, Ayako Sasaki, Tadashi Teshima, Toshihiro Yamamoto, Yuji Otsuka
  • Patent number: 10288604
    Abstract: The present invention has an object of providing a sugar derivative emitting blue fluorescence color which can be used for imaging of cells or intracellular molecules and a method for imaging cells using the derivative. Further, the present invention has an object of providing a method for detecting cancer cells at high accuracy by imaging, and an imaging agent used for this method. The present invention provides a fluorescently labeled sugar derivative having 3-carboxy-6,8-difluoro-7-hydroxycoumarin or 3-carboxymethyl-6,8-difluoro-7-hydroxy-4-methylcoumarin as a fluorescent molecular group in its molecule, and a cell imaging agent and an imaging method using the derivative. Further, the present invention provides an imaging agent and an imaging method for cancer cells using an L-glucose derivative having the above-described fluorescent molecular group in its molecule.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: May 14, 2019
    Assignee: HIROSAKI UNIVERSITY
    Inventors: Katsuya Yamada, Tadashi Teshima, Toshihiro Yamamoto
  • Publication number: 20190113456
    Abstract: A multi-surface image acquisition system includes a multi-surface observation prism which includes one or more prisms and has a light path formed to collect surfaces in respective directions to be observed of a subject having a three-dimensional structure into one direction, in which a light path length is corrected by utilizing a difference in refractive index between glass and air to equalize a working distance of each surface. A light field camera expands a focal-depth adjustment range for two or more images focused on same plane through the prism. A three-dimensional subject can be observed in multiple directions at the same time, including an observation of cells.
    Type: Application
    Filed: March 30, 2017
    Publication date: April 18, 2019
    Applicant: Hirosaki University
    Inventors: Katsuya Yamada, Kouki Ono, Yasushi Kojima, Terumasa Takamatsu
  • Publication number: 20180238899
    Abstract: Provided is a glucose derivative, which is taken into cells via a membrane sugar transport system and is represented by formula (1). Also provided are an imaging agent and an imaging method for a cell or intracellular molecule using said glucose derivative. Further provided is a method for detecting cancer cells with good accuracy using said glucose derivative and an imaging agent to be used in said method. More specifically provided are D-glucose derivatives and L-glucose derivatives in which glucose is bound to the 7-position of a fluorescent molecular group with a coumarin backbone or a quinolone backbone. Also provided are a cell imaging agent and imaging method using the derivative. A cancer cell imaging agent and imaging method using the L-glucose derivative is also provided. G is a group selected from formulas (G1)-(G4) below.
    Type: Application
    Filed: April 19, 2018
    Publication date: August 23, 2018
    Applicant: HIROSAKI UNIVERSITY
    Inventors: Katsuya YAMADA, Ayako SASAKI, Tadashi TESHIMA, Toshihiro YAMAMOTO, Yuji OTSUKA
  • Patent number: 10001487
    Abstract: Provided is a glucose derivative, which is taken into cells via a membrane sugar transport system and is represented by formula (1). Also provided are an imaging agent and an imaging method for a cell or intracellular molecule using said glucose derivative. Further provided are a method for detecting cancer cells with good accuracy using said glucose derivative and an imaging agent to be used in said method. More specifically provided are D-glucose derivatives and L-glucose derivatives in which glucose is bound to the 7-position of a fluorescent molecular group with a coumarin backbone or a quinolone backbone. Also provided are a cell imaging agent and imaging method using the derivative. A cancer cell imaging agent and imaging method using the L-glucose derivative is also provided. G is a group selected from formulas (G1)-(G4) below.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: June 19, 2018
    Assignee: HIROSAKI UNIVERSITY
    Inventors: Katsuya Yamada, Ayako Sasaki, Tadashi Teshima, Toshihiro Yamamoto, Yuji Otsuka
  • Patent number: 9958450
    Abstract: An object of the present invention is to provide a method for accurately evaluating the specific incorporation of D-glucose into cells. The present invention as a means for achieving the object is characterized by comprising contacting a D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells and an L-glucose derivative that has a fluorescent chromophore in the molecule with different cells in the same cell strain to be evaluated, respectively, comparing the fluorescence emitted by the D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells with the fluorescence emitted by the L-glucose derivative that has a fluorescent chromophore in the molecule, and evaluating the specific incorporation of D-glucose into cells relative to L-glucose by taking the difference between the two kinds of fluorescence intensities.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: May 1, 2018
    Assignee: HIROSAKI UNIVERSITY
    Inventors: Katsuya Yamada, Tadashi Teshima, Toshihiro Yamamoto
  • Publication number: 20170315129
    Abstract: The purpose of the present invention is to provide a novel cancer cell detection method that uses living body-derived cells and that can be used even in cytodiagnosis. In particular, the purpose of the present invention is to provide a novel cancer cell detection method that makes it possible to perform imaging of cells in a living state and a dual detection method for cancer cells in which the aforementioned method is combined with a pre-existing dyeing method for cytodiagnosis. Provided is a cancer cell detection method that uses living body-derived cells and that includes: incubating living cells included in a sample taken from a person together with a fluorescently-labeled L-glucose derivative and detecting the fluorescently-labeled L-glucose derivative that is taken up into the cells; and detecting fluorescence emitted by the L-glucose derivative that is present within the cells while the cells are attached to a thin glass or plastic plate.
    Type: Application
    Filed: September 24, 2015
    Publication date: November 2, 2017
    Applicant: Hirosaki University
    Inventors: Katsuya YAMADA, Ayako SASAKI, Kouki ONO, Kiyoshi TONE
  • Publication number: 20170122955
    Abstract: Provided is a glucose derivative, which is taken into cells via a membrane sugar transport system and is represented by formula (1). Also provided are an imaging agent and an imaging method for a cell or intracellular molecule using said glucose derivative. Further provided are a method for detecting cancer cells with good accuracy using said glucose derivative and an imaging agent to be used in said method. More specifically provided are D-glucose derivatives and L-glucose derivatives in which glucose is bound to the 7-position of a fluorescent molecular group with a coumarin backbone or a quinolone backbone. Also provided are a cell imaging agent and imaging method using the derivative. A cancer cell imaging agent and imaging method using the L-glucose derivative is also provided. G is a group selected from formulas (G1)-(G4) below.
    Type: Application
    Filed: April 6, 2015
    Publication date: May 4, 2017
    Applicant: HIROSAKI UNIVERSITY
    Inventors: Katsuya YAMADA, Ayako SASAKI, Tadashi TESHIMA, Toshihiro YAMAMOTO, Yuji OTSUKA
  • Patent number: 9339951
    Abstract: Provided are a resin-releasing jig including a base and a releasing layer formed on a surface side of the base, in which the releasing layer is composed of a resin containing a perfluorinated polymer as a main component, and the perfluorinated polymer is crosslinked; and the resin-releasing jig further including a primer layer disposed between the base and the releasing layer, in which the primer layer is composed of a resin containing, as a main component, a perfluorinated polymer and an engineering plastic, the perfluorinated polymer in the primer layer is crosslinked, and the releasing layer has high abrasion resistance and a good adhesive force to the base and thus the resin-releasing jig has good durability. In particular, provided is the resin-releasing jig which is an extrusion molding mold used in an extruder for producing a long resin molded article.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: May 17, 2016
    Assignee: SUMITOMO ELECTRIC FINE POLYMER, INC.
    Inventors: Akito Kubo, Katsuya Yamada, Kazuaki Ikeda, Yasunori Nagaoka, Kouji Mutou, Noriaki Takami
  • Patent number: 9330948
    Abstract: A heater unit according to an embodiment includes: a flat heater including a linear heating element arranged in a planar pattern; a first mesh body formed in a mesh pattern using a material with high heat conductivity and placed at least on one side of the flat heater facing the flat heater; and a second mesh body formed in a mesh pattern using a material with lower heat conductivity than that of the first mesh body and placed to face a surface of the first mesh body opposite to the surface of the first mesh body facing the flat heater.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: May 3, 2016
    Assignees: SHIBAURA MECHATRONICS CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: Masaaki Furuya, Munenori Iwami, Takahiko Wakatsuki, Masanori Kondo, Katsuya Yamada
  • Publication number: 20160107376
    Abstract: An object is to provide a metal-resin composite body (1) having good high-frequency signal transmission characteristics and good adhesiveness between a synthetic resin portion (2) and a base portion (3). The present invention provides a metal-resin composite body including a base portion composed of a metal, and a synthetic resin portion that is bonded to at least a part of an outer surface of the base portion and that contains a fluororesin as a main component, in which a silane coupling agent which has a functional group containing a N atom or a S atom is present in the vicinity of an interface between the base portion and the synthetic resin portion. The silane coupling agent is preferably an aminoalkoxysilane, an ureidoalkoxysilane, a mercaptoalkoxysilane, a sulfide alkoxysilane, or a derivative thereof. The silane coupling agent is preferably an aminoalkoxysilane to which a modifying group is introduced. The modifying group is preferably a phenyl group.
    Type: Application
    Filed: May 27, 2014
    Publication date: April 21, 2016
    Inventors: Shingo NAKAJIMA, Jun SUGAWARA, Shingo KAIMORI, Hideo ARAMAKI, Makoto NAKABAYASHI, Katsuya YAMADA
  • Publication number: 20150369797
    Abstract: The present invention has an object of providing a sugar derivative emitting blue fluorescence color which can be used for imaging of cells or intracellular molecules and a method for imaging cells using the derivative. Further, the present invention has an object of providing a method for detecting cancer cells at high accuracy by imaging, and an imaging agent used for this method. The present invention provides a fluorescently labeled sugar derivative having 3-carboxy-6,8-difluoro-7-hydroxycoumarin or 3-carboxymethyl-6,8-difluoro-7-hydroxy-4-methylcoumarin as a fluorescent molecular group in its molecule, and a cell imaging agent and an imaging method using the derivative. Further, the present invention provides an imaging agent and an imaging method for cancer cells using an L-glucose derivative having the above-described fluorescent molecular group in its molecule.
    Type: Application
    Filed: October 1, 2013
    Publication date: December 24, 2015
    Applicant: HIROSAKI UNIVERSITY
    Inventors: Katsuya YAMADA, Tadashi TESHIMA, Toshihiro YAMAMOTO
  • Publication number: 20150212094
    Abstract: An object of the present invention is to provide a method for accurately evaluating the specific incorporation of D-glucose into cells. The present invention as a means for achieving the object is characterized by comprising contacting a D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells and an L-glucose derivative that has a fluorescent chromophore in the molecule with different cells in the same cell strain to be evaluated, respectively, comparing the fluorescence emitted by the D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells with the fluorescence emitted by the L-glucose derivative that has a fluorescent chromophore in the molecule, and evaluating the specific incorporation of D-glucose into cells relative to L-glucose by taking the difference between the two kinds of fluorescence intensities.
    Type: Application
    Filed: February 5, 2015
    Publication date: July 30, 2015
    Inventors: Katsuya YAMADA, Tadashi TESHIMA, Toshihiro YAMAMOTO
  • Patent number: 8986656
    Abstract: An object of the present invention is to provide a method for accurately evaluating the specific incorporation of D-glucose into cells. The present invention as a means for achieving the object is characterized by comprising contacting a D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells and an L-glucose derivative that has a fluorescent chromophore in the molecule with different cells in the same cell strain to be evaluated, respectively, comparing the fluorescence emitted by the D-glucose derivative that has a fluorescent chromophore in the molecule and is specifically incorporated into cells with the fluorescence emitted by the L-glucose derivative that has a fluorescent chromophore in the molecule, and evaluating the specific incorporation of D-glucose into cells relative to L-glucose by taking the difference between the two kinds of fluorescence intensities.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: March 24, 2015
    Assignees: Hirosaki University, National University Corporation Tokyo Unversity of Agriculture and Technology
    Inventors: Katsuya Yamada, Hideaki Matsuoka, Tadashi Teshima, Toshihiro Yamamoto
  • Publication number: 20150037452
    Abstract: Provided are a resin-releasing jig including a base and a releasing layer formed on a surface side of the base, in which the releasing layer is composed of a resin containing a perfluorinated polymer as a main component, and the perfluorinated polymer is crosslinked; and the resin-releasing jig further including a primer layer disposed between the base and the releasing layer, in which the primer layer is composed of a resin containing, as a main component, a perfluorinated polymer and an engineering plastic, the perfluorinated polymer in the primer layer is crosslinked, and the releasing layer has high abrasion resistance and a good adhesive force to the base and thus the resin-releasing jig has good durability. In particular, provided is the resin-releasing jig which is an extrusion molding mold used in an extruder for producing a long resin molded article.
    Type: Application
    Filed: March 29, 2013
    Publication date: February 5, 2015
    Inventors: Akito Kubo, Katsuya Yamada, Kazuaki Ikeda, Yasunori Nagaoka, Kouji Mutou, Noriaki Takami
  • Publication number: 20140154717
    Abstract: The purpose of the present invention is to provide a method for highly accurately detecting a cancer cell. The method of the present invention is characterized by comprising imaging with the use of a fluorescently labeled L-glucose derivative. By using the method and imaging agent according to the present invention, a high contrast between a cancer cell and a normal cell can be obtained compared with the case that imaging is conducted with the use of a fluorescently labeled D-glucose derivative. According to this method, moreover, no fasting is needed for the determination. Thus, the imaging can be quickly carried out without imposing a burden on a patient.
    Type: Application
    Filed: March 29, 2012
    Publication date: June 5, 2014
    Applicants: HIROSAKI UNIVERSITY, PEPTIDE INSTITUTE, INC., RIKEN
    Inventors: Katsuya Yamada, Hirotaka Onoe, Tadashi Teshima, Toshihiro Yamamoto
  • Patent number: 8581202
    Abstract: According to one embodiment, a radiation detection apparatus includes a radiation detection panel, a support member, a circuit board, a flexible circuit board, a housing, a connecting member, a thermally radiative member, and a thermally conductive member. The support member supports the radiation detection panel on one surface thereof. The circuit board is supported by other surface of the support member, and drives the radiation detection panel. The flexible circuit board electrically connects the radiation detection panel with the circuit board, and on which an integrated circuit is mounted. The housing has thermal insulation, and a part of which is provided with an opening. The connecting member is connected to the support member and the housing. The thermally radiative member is located outside the housing and extends through the opening. The thermally radiative member is opposed to the integrated circuit, and shields an electromagnetic field that leaks from the opening.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: November 12, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Katsuya Yamada, Yasuaki Kawasaki, Hiroshi Iwata
  • Patent number: 8366319
    Abstract: According to one embodiment, a radiation detection apparatus includes a radiation detection panel, a support member that is configured to support the radiation detection panel on one surface thereof and has electrical conductive property, a circuit board that is supported on the other surface of the support member, a flexible circuit board configured to electrically connect the radiation detection panel to the circuit board, a heat insulation member arranged between the radiation detection panel and the circuit board, a housing that is configured to accommodate the radiation detection panel, the circuit board, the support member, and the heat insulation member and has electrical conductive property, and a heat conduction member that is accommodated in the housing, connected to the support member and the housing, and configured to achieve electrical conduction between the support member and the housing to conduct heat of the support member to the housing.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: February 5, 2013
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Yasuaki Kawasaki, Katsuya Yamada