Patents by Inventor Taiga Arai

Taiga Arai 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: 11685915
    Abstract: A method utilizes an aluminum oxide support with a water-soluble neutral polymer adsorbed on a surface of the aluminum oxide support and is aimed to collect nucleic acids from a body fluid sample. The method includes a step of adsorbing nucleic acids on the support in the presence of a chaotropic agent and a step of adding a solution containing an anionic surfactant to the nucleic acid-adsorbed support.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: June 27, 2023
    Assignee: Toray Industries, Inc.
    Inventors: Shota Sekiguchi, Taiga Arai, Masateru Itou
  • Patent number: 11266672
    Abstract: The present invention provides a novel pharmaceutical composition for treating and/or preventing cancer comprising, as an active ingredient, a polynucleotide derived from various miRNAs associated with cancer, a combination drug of the pharmaceutical composition and another antitumor agent, and a method for treating or preventing cancer in a subject having the cancer using the pharmaceutical composition or the combination drug. The present invention relates to a pharmaceutical composition for treating and/or preventing cancer comprising, as an active ingredient, a polynucleotide comprising the nucleotide sequence as set forth in SEQ ID NO: 1, or a nucleotide sequence comprising a substitution of one nucleotide in the nucleotide sequence as set forth in SEQ ID NO: 1 (wherein when at least a part of the polynucleotide is DNA, uracil in a region corresponding to the DNA in the nucleotide sequence is replaced with thymine).
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: March 8, 2022
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Atsuko Miyano, Hiroko Sudo, Aiko Takayama, Taiga Arai
  • Patent number: 10980826
    Abstract: The present application provides a pharmaceutical composition for treating and/or preventing a cancer comprising, as an active ingredient, a polynucleotide derived from miRNA associated with the cancer, a combination drug of the pharmaceutical composition and another antitumor agent, and a method for treating or preventing a cancer in a subject having the cancer using the pharmaceutical composition or the combination drug.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: April 20, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Atsuko Miyano, Hiroko Sudo, Aiko Takayama, Taiga Arai
  • Patent number: 10907155
    Abstract: It is an object of the present invention to specify miRNA associated with the treatment and/or prevention of various cancer species, from among various miRNAs associated with cancer, and to provide a novel pharmaceutical composition for treating and/or preventing cancer which targets the specified miRNA. According to the present invention, provided are a pharmaceutical composition for treating and/or preventing cancer comprising, as an active ingredient, an antisense polynucleotide shown as hsa-miR4454, a combination drug comprising the aforementioned pharmaceutical composition and another antitumor agent, and a method for treating and/or preventing cancer, using the above-described pharmaceutical composition or combination drug.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: February 2, 2021
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Atsuko Miyano, Aiko Takayama, Hiroko Sudo, Taiga Arai
  • Publication number: 20200332277
    Abstract: A method utilizes an aluminum oxide support with a water-soluble neutral polymer adsorbed on a surface of the aluminum oxide support and is aimed to collect nucleic acids from a body fluid sample. The method includes a step of adsorbing nucleic acids on the support in the presence of a chaotropic agent and a step of adding a solution containing an anionic surfactant to the nucleic acid-adsorbed support.
    Type: Application
    Filed: December 26, 2018
    Publication date: October 22, 2020
    Inventors: Shota Sekiguchi, Taiga Arai, Masateru Itou
  • Patent number: 10689649
    Abstract: The present invention provides a novel pharmaceutical composition for treating and/or preventing a cancer comprising, as an active ingredient, a polynucleotide derived from various miRNAs associated with cancer, a combination drug of the pharmaceutical composition and another antitumor agent, and a method for treating or preventing a cancer in a subject having the cancer using the pharmaceutical composition or the combination drug. The present invention relates to a pharmaceutical composition for treating and/or preventing a cancer comprising, as an active ingredient, a polynucleotide comprising the nucleotide sequence as set forth in SEQ ID NO: 1 or 2 (wherein when at least a part of the polynucleotide is DNA, uracil in a region corresponding to the DNA in the nucleotide sequence is replaced with thymine).
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: June 23, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Atsuko Miyano, Hiroko Sudo, Aiko Takayama, Taiga Arai
  • Publication number: 20190216839
    Abstract: The present application provides a pharmaceutical composition for treating and/or preventing a cancer comprising, as an active ingredient, a polynucleotide derived from miRNA associated with the cancer, a combination drug of the pharmaceutical composition and another antitumor agent, and a method for treating or preventing a cancer in a subject having the cancer using the pharmaceutical composition or the combination drug.
    Type: Application
    Filed: November 2, 2016
    Publication date: July 18, 2019
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Atsuko MIYANO, Hiroko SUDO, Aiko TAKAYAMA, Taiga ARAI
  • Publication number: 20190169617
    Abstract: It is an object of the present invention to specify miRNA associated with the treatment and/or prevention of various cancer species, from among various miRNAs associated with cancer, and to provide a novel pharmaceutical composition for treating and/or preventing cancer which targets the specified miRNA. According to the present invention, provided are a pharmaceutical composition for treating and/or preventing cancer comprising, as an active ingredient, an antisense polynucleotide shown as hsa-miR4454, a combination drug comprising the aforementioned pharmaceutical composition and another antitumor agent, and a method for treating and/or preventing cancer, using the above-described pharmaceutical composition or combination drug.
    Type: Application
    Filed: August 9, 2017
    Publication date: June 6, 2019
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Atsuko MIYANO, Aiko TAKAYAMA, Hiroko SUDO, Taiga ARAI
  • Publication number: 20190046551
    Abstract: The present invention provides a novel pharmaceutical composition for treating and/or preventing cancer comprising, as an active ingredient, a polynucleotide derived from various miRNAs associated with cancer, a combination drug of the pharmaceutical composition and another antitumor agent, and a method for treating or preventing cancer in a subject having the cancer using the pharmaceutical composition or the combination drug. The present invention relates to a pharmaceutical composition for treating and/or preventing cancer comprising, as an active ingredient, a polynucleotide comprising the nucleotide sequence as set forth in SEQ ID NO: 1, or a nucleotide sequence comprising a substitution of one nucleotide in the nucleotide sequence as set forth in SEQ ID NO: 1 (wherein when at least a part of the polynucleotide is DNA, uracil in a region corresponding to the DNA in the nucleotide sequence is replaced with thymine).
    Type: Application
    Filed: January 27, 2017
    Publication date: February 14, 2019
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Atsuko MIYANO, Hiroko SUDO, Aiko TAKAYAMA, Taiga ARAI
  • Publication number: 20180362981
    Abstract: The present invention provides a novel pharmaceutical composition for treating and/or preventing a cancer comprising, as an active ingredient, a polynucleotide derived from various miRNAs associated with cancer, a combination drug of the pharmaceutical composition and another antitumor agent, and a method for treating or preventing a cancer in a subject having the cancer using the pharmaceutical composition or the combination drug. The present invention relates to a pharmaceutical composition for treating and/or preventing a cancer comprising, as an active ingredient, a polynucleotide comprising the nucleotide sequence as set forth in SEQ ID NO: 1 or 2 (wherein when at least a part of the polynucleotide is DNA, uracil in a region corresponding to the DNA in the nucleotide sequence is replaced with thymine).
    Type: Application
    Filed: December 9, 2016
    Publication date: December 20, 2018
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Atsuko MIYANO, Hiroko SUDO, Aiko TAKAYAMA, Taiga ARAI
  • Patent number: 9991336
    Abstract: An anode electrode and a cathode electrode formed on a silicon semiconductor substrate, p-type layer formed next to the anode electrode, an n-type layer formed next to the cathode electrode by a V-group element being diffused, an n? layer formed between the p-type layer and the n-type layer, and an n-buffer layer formed between the n? layer and the n-type layer and containing oxygen are provided and an oxygen concentration in an area of a width of at least 30 ?m from a surface on a side of the n-type layer of the cathode electrode toward the anode electrode is set to 1×1017 cm?3 or more and also the oxygen concentration of the n? layer in a position in contact with the p-type layer is set to less than 3×1017 cm?3.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: June 5, 2018
    Assignee: Hitachi Power Semiconductor Device Ltd.
    Inventors: Masatoshi Wakagi, Taiga Arai, Mutsuhiro Mori, Tomoyasu Furukawa
  • Publication number: 20180090564
    Abstract: An anode electrode and a cathode electrode formed on a silicon semiconductor substrate, p-type layer formed next to the anode electrode, an n-type layer formed next to the cathode electrode by a V-group element being diffused, an n? layer formed between the p-type layer and the n-type layer, and an n-buffer layer formed between the n? layer and the n-type layer and containing oxygen are provided and an oxygen concentration in an area of a width of at least 30 ?m from a surface on a side of the n-type layer of the cathode electrode toward the anode electrode is set to 1×1017 cm?3 or more and also the oxygen concentration of the n? layer in a position in contact with the p-type layer is set to less than 3×1017 cm?3.
    Type: Application
    Filed: September 5, 2017
    Publication date: March 29, 2018
    Applicant: HITACHI POWER SEMICONDUCTOR DEVICE, LTD.
    Inventors: Masatoshi WAKAGI, Taiga ARAI, Mutsuhiro MORI, Tomoyasu FURUKAWA
  • Publication number: 20170317075
    Abstract: A diode includes an anode electrode layer; a cathode electrode layer; a buffer layer of a first conductivity type formed between the anode electrode layer and the cathode electrode layer in a region extending to a location at a distance of 30 ?m or more from the cathode electrode layer; a first semiconductor layer of the first conductivity type formed in a region between the anode electrode layer and the cathode electrode layer, and being in contact with the buffer layer of the first conductivity type; and a second semiconductor layer of a second conductivity type formed in a region between the anode electrode layer and the first semiconductor layer of the first conductivity type. The carrier concentration in the first semiconductor layer is lower than the carrier concentration in the buffer layer. The carrier concentration in the buffer layer is less than 1×1015 cm?3.
    Type: Application
    Filed: April 24, 2017
    Publication date: November 2, 2017
    Inventors: Taiga ARAI, Masatoshi WAKAGI, Tetsuya ISHIMARU, Mutsuhiro MORI
  • Patent number: 8809903
    Abstract: A semiconductor device provides a gate electrode formed on a lateral face of a wide trench, and thereby the gate electrode is covered by a gate insulating layer and a thick insulating layer to be an inter layer. Therefore, a parasitic capacitance of the gate becomes small, and there is no potential variation of the gate since there is no floating p-layer so that a controllability of the dv/dt can be improved. In addition, the conductive layer between the gate electrodes can relax the electric field applied to the corner of the gate electrode. In consequence, compatibility of low loss and low noise and high reliability can be achieved.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: August 19, 2014
    Assignee: Hitachi, Ltd.
    Inventors: So Watanabe, Mutsuhiro Mori, Taiga Arai
  • Publication number: 20140001512
    Abstract: A semiconductor device provides a gate electrode formed on a lateral face of a wide trench, and thereby the gate electrode is covered by a gate insulating layer and a thick insulating layer to be an inter layer. Therefore, a parasitic capacitance of the gate becomes small, and there is no potential variation of the gate since there is no floating p-layer so that a controllability of the dv/dt can be improved. In addition, the conductive layer between the gate electrodes can relax the electric field applied to the corner of the gate electrode. In consequence, compatibility of low loss and low noise and high reliability can be achieved.
    Type: Application
    Filed: August 30, 2013
    Publication date: January 2, 2014
    Applicant: Hitachi, Ltd.
    Inventors: So WATANABE, Mutsuhiro MORI, Taiga ARAI
  • Patent number: 8546847
    Abstract: A semiconductor device provides a gate electrode formed on a lateral face of a wide trench, and thereby the gate electrode is covered by a gate insulating layer and a thick insulating layer to be an inter layer. Therefore, a parasitic capacitance of the gate becomes small, and there is no potential variation of the gate since there is no floating p-layer so that a controllability of the dv/dt can be improved. In addition, the conductive layer between the gate electrodes can relax the electric field applied to the corner of the gate electrode. In consequence, compatibility of low loss and low noise and high reliability can be achieved.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: October 1, 2013
    Assignee: Hitachi, Ltd.
    Inventors: So Watanabe, Mutsuhiro Mori, Taiga Arai
  • Patent number: 8120098
    Abstract: A semiconductor device which can avoid increase of a conduction loss of an IGBT, secure a low noise characteristic and also reduce a switch loss. The switching device is of a trench gate type, in which a drift n? layer 110 is exposed to its main surface to a floating p layer 126 and to trench gates. In other words, the floating p layer 126 is provided within the drift n? layer 110 to be spaced from the trench gates.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: February 21, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Taiga Arai, Mutsuhiro Mori
  • Publication number: 20110133718
    Abstract: A semiconductor device provides a gate electrode formed on a lateral face of a wide trench, and thereby the gate electrode is covered by a gate insulating layer and a thick insulating layer to be an inter layer. Therefore, a parasitic capacitance of the gate becomes small, and there is no potential variation of the gate since there is no floating p-layer so that a controllability of the dv/dt can be improved. In addition, the conductive layer between the gate electrodes can relax the electric field applied to the corner of the gate electrode. In consequence, compatibility of low loss and low noise and high reliability can be achieved.
    Type: Application
    Filed: December 2, 2010
    Publication date: June 9, 2011
    Applicant: Hitachi, Ltd.
    Inventors: So WATANABE, Mutsuhiro Mori, Taiga Arai
  • Patent number: 7948005
    Abstract: A fourth semiconductor region of a first conduction type is provided in a partial region of a third semiconductor region of a second conduction type. This configuration enhances the blocking voltage at the time when the sheet carrier concentration of a fifth semiconductor region is enhanced.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: May 24, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Mutsuhiro Mori, Taiga Arai
  • Patent number: 7875509
    Abstract: In a manufacturing method of a SOI type high withstand voltage semiconductor device formed on a support substrate via an insulation film, a small-sized semiconductor device having small dispersion of withstand voltage is manufactured by introducing impurities into the whole surface of a p-type or n-type SOI substrate having an impurity concentration of 2E14 cm?3 or less and serving as an active layer of the semiconductor device with an ion implantation method and thereby forming a drift layer.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: January 25, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Junichi Sakano, Kenji Hara, Shinji Shirakawa, Taiga Arai, Mutsuhiro Mori