Patents by Inventor Kei Yoshida

Kei Yoshida 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).

  • Publication number: 20200358000
    Abstract: A compound is represented by a formula (2) below.
    Type: Application
    Filed: October 3, 2017
    Publication date: November 12, 2020
    Inventors: Masatoshi SAITO, Kei Yoshida, Yuichiro Kawamura, Toshinari Ogiwara, Kei Yoshizaki
  • Patent number: 10811616
    Abstract: An organic electroluminescence device includes: an anode; an emitting layer; and a cathode, the emitting layer containing a first material, a second material and a third material, the first material being a fluorescent material, the second material being a delayed fluorescent material, the third material having a singlet energy larger than a singlet energy of the second material.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: October 20, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshinari Ogiwara, Kei Yoshida, Ryohei Hashimoto, Yumiko Mizuki
  • Patent number: 10793937
    Abstract: A steel for induction hardening according to an aspect includes, as a chemical composition, predetermined amounts of alloy elements and a remainder including Fe and impurities, in which Al×N is 0.000330 to 0.000825, Mn/S is 4.6 to 14.0, a machinability index M is 15.5 to 25.65, an area fraction of AlN having an equivalent circle diameter of more than 200 nm at a ¼ position of a diameter of the steel is 20% or less of an area fraction of all AlN having an equivalent circle diameter of 40 nm or more, and a number density of Mn sulfide-based inclusions having a maximum diameter of 0.3 ?m or more and 10 ?m or less at the ¼ position of the diameter is 100 pieces/mm2 or more and 2500 pieces/mm2 or less.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: October 6, 2020
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Toshiharu Aiso, Suguru Yoshida, Kei Miyanishi
  • Publication number: 20200261975
    Abstract: An additive manufacturing nozzles includes a header (41) extending in a width direction of the chamber and which is configured to be supplied with inert gas from the outside, and a nozzle body (43) connecting with the header (41) in the width direction and is configured to horizontally blow out the inert gas, which is supplied from the header, to a molding area. The nozzle body has a honeycomb part (52) which defines an inside of the nozzle body into flow channels through which the inert gas flows, a blowout part (55) disposed downstream of the honeycomb part and which is connected with the honeycomb part in the width direction. The inert gas passed through the plurality of flow channels is led from the honeycomb part to the blowout part, and a porous part (54), which has openings, is disposed between the honeycomb part and the blowout part.
    Type: Application
    Filed: October 30, 2018
    Publication date: August 20, 2020
    Inventors: Kei HIGASHI, Kazuhiro YOSHIDA, Yoshinao KOMATSU, Takanao KOMAKI
  • Publication number: 20200190004
    Abstract: A bisphenol composition including a specific amount of aromatic alcohol sulfonate, and a simple method of producing it are provided. Also provided is a method of producing a polycarbonate resin in which, by using the bisphenol composition including a specific amount of aromatic alcohol sulfonate, melt polymerization reaction can be efficiently allowed to proceed to produce a polycarbonate resin having an excellent color tone. A bisphenol composition including an aromatic alcohol sulfonate at not less than 0.1 ppb by mass with respect to a bisphenol. A method of producing a bisphenol composition, including reacting a ketone or an aldehyde with an aromatic alcohol in the presence of sulfuric acid to produce a bisphenol composition. A method of producing a polycarbonate resin, including producing a polycarbonate resin using the bisphenol composition. A polycarbonate resin including a specific amount of aromatic alcohol sulfonate.
    Type: Application
    Filed: February 21, 2020
    Publication date: June 18, 2020
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Kei Uchiyama, Takayuki Yoshida, Rie Konishi, Kazuo Hirowatari, Takaharu Oono
  • Publication number: 20200148639
    Abstract: A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and D1 and D2 are each independently represented by one of a formula (2), a formula (3) and formula (3x) below, D1 and D2 being optionally mutually the same or different.
    Type: Application
    Filed: January 10, 2020
    Publication date: May 14, 2020
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Patent number: 10651398
    Abstract: An organic electroluminescence device includes an anode, a cathode, a first organic layer interposed between the anode and the cathode, a second organic layer interposed between the first organic layer and the cathode, and a bipolar layer interposed between the first organic layer and the second organic layer and having bipolar characteristics, in which at least one of the first organic layer and the second organic layer includes the first compound and the second compound, the first compound exhibits delayed fluorescence, and an energy gap T77K(M2) at 77[K] of the second compound is larger than an energy gap T77K(M1) at 77[K] of the first compound.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: May 12, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Toshinari Ogiwara, Kei Yoshida
  • Patent number: 10590080
    Abstract: A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and D1 and D2 are each independently represented by one of a formula (2), a formula (3) and formula (3x) below, D1 and D2 being optionally mutually the same or different.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: March 17, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Satomi Tasaki, Masahiro Kawamura, Toshinari Ogiwara, Hitoshi Kuma, Kei Yoshida, Keiji Okinaka
  • Publication number: 20200056248
    Abstract: An object of the present invention is to provide a method for increasing the purity of a type of tissue cell such as an endothelial cell, a hepatocyte, or an insulin-producing cell. The present invention solves the problem by providing a method comprising a step of introducing, into a cell population, an mRNA comprising a nucleic acid sequence recognized by an miRNA specifically expressed in endothelial cells, hepatocytes, or insulin-producing cells.
    Type: Application
    Filed: October 22, 2019
    Publication date: February 20, 2020
    Inventors: Yoshinori Yoshida, Hirohide Saito, Kenji Miki, Kei Endo, Seiya Takahashi
  • Patent number: 10547009
    Abstract: An organic electroluminescence device includes an anode, an emitting layer, and a cathode, the emitting layer including a delayed-fluorescent first compound represented by a formula (1), and a fluorescent second compound. In the formula (1), Ar1 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and the like, and ArEWG is a substituted or unsubstituted heteroaryl group having 5 to 30 ring atoms and including one or more nitrogen atom in the ring, or an aryl group having 6 to 30 ring carbon atoms and substituted by one or more cyano group, at least one of Ar1 and ArX being at least one group selected from the group consisting of groups represented by a formula (1a) and the like.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: January 28, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Kei Yoshida, Ryohei Hashimoto, Toshinari Ogiwara, Yuichiro Kawamura, Masatoshi Saito
  • Patent number: 10538740
    Abstract: An object of the present invention is to provide a novel method for sorting cardiomyocytes. Another object of the present invention is to provide a method for producing high-purity cardiomyocytes and a kit used therefor. The present invention provides a method for sorting cardiomyocytes, comprising a step of introducing miRNA-responsive mRNA into a cell group, wherein the miRNA-responsive mRNA consists of a sequence comprising the following (i) and (ii): (i) a nucleic acid specifically recognized by miRNA specifically expressed in cardiomyocytes, and (ii) a nucleic acid corresponding to the coding region of a gene, wherein translation of (ii) the nucleic acid corresponding to the coding region of a gene into protein is regulated by the nucleic acid sequence in (i) above, thereby achieving the aforementioned objects.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: January 21, 2020
    Assignee: Kyoto University
    Inventors: Yoshinori Yoshida, Hirohide Saito, Kenji Miki, Kei Endo, Seiya Takahashi
  • Publication number: 20200013963
    Abstract: Specifically substituted ladder type compounds of formula (I) wherein A is formula (II) a material for an organic electroluminescence device comprising at least one compound of formula (I), and an organic electroluminescence device which comprises one or more organic thin film layers including an emitting layer between a cathode and an anode, wherein at least one layer of the organic thin film layers comprises at least one compound of formula (I).
    Type: Application
    Filed: December 19, 2017
    Publication date: January 9, 2020
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yumiko MIZUKI, Kei YOSHIDA, Kiyoshi IKEDA, Masahiro KAWAMURA
  • Publication number: 20190382366
    Abstract: A compound represented by Formula (1): The compound can be used as insecticides.
    Type: Application
    Filed: August 27, 2019
    Publication date: December 19, 2019
    Inventors: Kei Yoshida, Takeo Wakita, Hiroyuki Katsuta, Akiyoshi Kai, Yutaka Chiba, Kiyoshi Takahashi, Hiroko Kato, Nobuyuki Kawahara, Michikazu Nomura, Hidenori Daido, Junji Maki, Shinichi Banba
  • Patent number: 10505123
    Abstract: A compound that includes a structure including two or more structures represented by the following formula (1) in the same molecule and in which at least two of the structures represented by the formula (1) are directly bonded to each other by a single bond.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: December 10, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Kei Yoshida, Toshihiro Iwakuma, Ryohei Hashimoto
  • Patent number: 10501811
    Abstract: An object of the present invention is to provide a method for increasing the purity of a type of tissue cell such as an endothelial cell, a hepatocyte, or an insulin-producing cell. The present invention solves the problem by providing a method comprising a step of introducing, into a cell population, an mRNA comprising a nucleic acid sequence recognized by an miRNA specifically expressed in endothelial cells, hepatocytes, or insulin-producing cells.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: December 10, 2019
    Assignee: KYOTO UNIVERSITY
    Inventors: Yoshinori Yoshida, Hirohide Saito, Kenji Miki, Kei Endo, Seiya Takahashi
  • Publication number: 20190337872
    Abstract: A compound is represented by a formula (20) below.
    Type: Application
    Filed: November 9, 2017
    Publication date: November 7, 2019
    Applicant: IDEMITSU KOSAN CO.,LTD.
    Inventors: Masatoshi SAITO, Kei YOSHIDA, Yuichiro KAWAMURA, Toshinari OGIWARA, Kei YOSHIZAKI
  • Publication number: 20190322555
    Abstract: A flocculant for treating a processing waste liquid into fresh water being formed by pulverizing an ion exchange resin for purification of fresh water into pure water to a size of 100 ?m or below. With the ion exchange resin pulverized and used as a flocculant, it is ensured that even when the processing waste liquid is subjected to flocculation and separation, the fresh water separated from the processing debris does not show an increased electric conductivity, and worsening of water quality can be restrained. In addition, since the flocculant is pulverized down to a size of 100 ?m or below, flocculation of the processing debris is promoted.
    Type: Application
    Filed: April 18, 2019
    Publication date: October 24, 2019
    Inventors: Miki YOSHIDA, Kei MINE
  • Patent number: 10435385
    Abstract: A compound represented by Formula (1): The compound can be used as insecticides.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: October 8, 2019
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kei Yoshida, Takeo Wakita, Hiroyuki Katsuta, Akiyoshi Kai, Yutaka Chiba, Kiyoshi Takahashi, Hiroko Kato, Nobuyuki Kawahara, Michikazu Nomura, Hidenori Daido, Junji Maki, Shinichi Banba
  • Patent number: 10429086
    Abstract: When hot water supply and room heating are requested simultaneously, a hot water supply operation, by which energy saving is achieved without impairing the comfortability in a room, is performed. A heat-pump apparatus of a variable operation capacity type, a primary water circuit, a hot water tank, a room heater, and a controller are provided. The controller sets a hot water supply operation completion target time in the case of a requests for a simultaneous hot water supply and room heating operation, based on a temperature difference between the outdoor air temperature and the indoor temperature, and determines the rotation speed of the compressor in the hot water supply operation completion target time set.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: October 1, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Jun Yoshida, Taro Hattori, Kazutaka Suzuki, Koji Matsuzawa, Hirokazu Minamisako, Kei Takeyama, Masahiro Hata
  • Publication number: 20190288221
    Abstract: An organic electroluminescence device includes an anode, a second organic layer, a first organic layer, and a cathode in this order. The first organic layer contains a first compound and a second compound. The second organic layer contains a third compound. The first compound is a compound represented by a formula (1). The second compound is a delayed fluorescent compound. The third compound is a compound represented by a formula (3). In the formula (1), X is a nitrogen atom or a carbon atom bonded to Y, Y being a hydrogen atom or a substituent. In the formula (3), n is an integer ranging from 1 to 4, XB is a group represented by a formula (3A). In the formula (3A), Ar1 and Ar2 are each independently a monovalent or polyvalent aromatic hydrocarbon group, and Cz is a group represented by a formula (3B-1) or the like.
    Type: Application
    Filed: March 18, 2019
    Publication date: September 19, 2019
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Kei Yoshizaki, Toshinari Ogiwara, Yuichiro Kawamura, Keiichi Yasukawa, Kei Yoshida