Patents by Inventor Yuka Okada

Yuka Okada 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: 20210280890
    Abstract: A redox flow battery includes a first nonaqueous liquid that contains a first nonaqueous solvent, a first electrode mediator, and metal ions; a first electrode at least in part in contact with the first nonaqueous liquid; a second nonaqueous liquid that contains a second nonaqueous solvent; a second electrode that is a counter electrode with respect to the first electrode and is at least in part in contact with the second nonaqueous liquid; and a separator that has a plurality of pores and separates the first and second nonaqueous liquids from each other. The plurality of pores have an average diameter larger than a size of each of the metal ions and smaller than a size of an aggregate containing molecules of the first electrode mediator solvated with the first nonaqueous solvent.
    Type: Application
    Filed: May 24, 2021
    Publication date: September 9, 2021
    Inventors: MASAHISA FUJIMOTO, SHUJI ITO, YU OTSUKA, YUKA OKADA
  • Publication number: 20210280889
    Abstract: A redox flow battery includes a first nonaqueous liquid that contains at least one first electrode mediator; a first electrode at least in part in contact with the first nonaqueous liquid; a second nonaqueous liquid; a second electrode that is a counter electrode with respect to the first electrode and is at least in part in contact with the second nonaqueous liquid; and a separator that has at least one pore and separates the first and second nonaqueous liquids from each other. The at least one pore has an inner surface modified with a functional group that contains a hydrocarbon group.
    Type: Application
    Filed: May 24, 2021
    Publication date: September 9, 2021
    Inventors: YU OTSUKA, SHUJI ITO, YUKA OKADA
  • Publication number: 20210273252
    Abstract: A flow battery includes a first nonaqueous liquid; a first electrode at least in part in contact with the first nonaqueous liquid; a second electrode that is a counter electrode with respect to the first electrode; and a separator that separates the first electrode and the second electrode from each other. The separator is made of an ion conductive polymer that has a crosslink structure containing an aromatic ring, the ion conductive polymer has an alkyl main chain that contains a plurality of acidic groups, and at least a subset of the plurality of the acidic groups forms salts with metal ions.
    Type: Application
    Filed: May 17, 2021
    Publication date: September 2, 2021
    Inventors: SHUJI ITO, YU OTSUKA, YUKA OKADA
  • Patent number: 10833346
    Abstract: The flow battery according to the present disclosure comprises a first non-aqueous liquid, a first electrode in contact with the first non-aqueous liquid, a second electrode which serves as a counter electrode of the first electrode, and a lithium ion conductive film which separates the first electrode and the second electrode from each other. The lithium ion conductive film is formed of a polymer base material containing an ionic polymer. The polymer base material has an interspace which communicates with an outside thereof. The polymer base material is formed of at least one kind of resin selected from the group consisting of a thermosetting resin and a thermoplastic resin which has a melting point of not less than 150 degrees Celsius. The ionic polymer is contained in an inside of the interspace of the polymer base material.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: November 10, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuka Okada, Shinji Ando, Sho Shibata
  • Patent number: 10680267
    Abstract: A flow battery includes a first liquid containing a first nonaqueous solvent; a first electrode immersed in the first liquid; a second electrode which is a counter electrode to the first electrode; and a separator separating the first electrode from the second electrode. The separator includes a solid electrolyte containing: a metal compound and a nonionic polymer which includes a poly(alkylene oxide) and cross-linking points. At least one of alkylene oxide units forming the poly(alkylene oxide) is composed of a tetramethylene oxide unit.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: June 9, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Yuka Okada
  • Publication number: 20200052315
    Abstract: The present disclosure provides a flow battery comprising a flexible lithium ion conductive film having durability against a highly reductive non-aqueous electrolyte liquid. The flow battery according to the present disclosure comprises a first non-aqueous electrolyte liquid, a first electrode, a second electrode, and a lithium ion conductive film. The first non-aqueous electrolyte liquid contains lithium ions and further biphenyl, phenanthrene, stilbene, triphenylene, anthracene, acenaphthene, acenaphthylene, fluorene, fluoranthene, o-terphenyl, m-terphenyl, or p-terphenyl. The lithium ion conductive film comprises a composite body. The composite body contains a lithium ion conductive polymer and polyvinylidene fluoride. The lithium ion conductive polymer includes an aromatic ring into which a lithium salt of an acidic group has been introduced. The lithium ion conductive polymer and the polyvinylidene fluoride have been mixed with each other homogeneously in the composite body.
    Type: Application
    Filed: October 16, 2019
    Publication date: February 13, 2020
    Inventors: YUKA OKADA, SHINJI ANDO, SHO SHIBATA
  • Publication number: 20190356010
    Abstract: The flow battery according to the present disclosure comprises a first non-aqueous liquid, a first electrode in contact with the first non-aqueous liquid, a second electrode which serves as a counter electrode of the first electrode, and a lithium ion conductive film which separates the first electrode and the second electrode from each other. The lithium ion conductive film is formed of a polymer base material containing an ionic polymer. The polymer base material has an interspace which communicates with an outside thereof. The polymer base material is formed of at least one kind of resin selected from the group consisting of a thermosetting resin and a thermoplastic resin which has a melting point of not less than 150 degrees Celsius. The ionic polymer is contained in an inside of the interspace of the polymer base material.
    Type: Application
    Filed: May 21, 2019
    Publication date: November 21, 2019
    Inventors: YUKA OKADA, SHINJI ANDO, SHO SHIBATA
  • Patent number: 10292913
    Abstract: Provided is a powdered tobermorite-type calcium silicate-based material capable of demonstrating high oil absorption. The powdered tobermorite-type calcium silicate-based material is characterized in that (1) a molar ratio of SiO2/CaO in the material is 1.5 or more, and (2) a cumulative pore volume having a pore size of 3.6 nm to 200 nm in the material is 0.9 cc/g or more, and a cumulative pore volume having a pore size of 3.6 nm to 5000 nm is 2.6 cc/g or more.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: May 21, 2019
    Assignee: TOMITA PHARMACEUTICAL CO., LTD.
    Inventors: Yuka Okada, Kazuki Kamai, Yuuta Tsumura, Yukinori Konishi
  • Publication number: 20180342750
    Abstract: A flow battery includes a first liquid containing a first nonaqueous solvent; a first electrode immersed in the first liquid; a second electrode which is a counter electrode to the first electrode; and a separator separating the first electrode from the second electrode. The separator includes a solid electrolyte containing: a metal compound and a nonionic polymer which includes a poly(alkylene oxide) and cross-linking points. At least one of alkylene oxide units forming the poly(alkylene oxide) is composed of a tetramethylene oxide unit.
    Type: Application
    Filed: May 14, 2018
    Publication date: November 29, 2018
    Inventor: YUKA OKADA
  • Patent number: 9855356
    Abstract: A liquid treatment method according to an aspect of the present disclosure comprises: starting application of a power between a pair of electrodes to generate plasma, which causes active species to be produced in a liquid; measuring the hydrogen ion concentration in the liquid while the plasma is generated; measuring a time elapsed after the starting the application of the power; and stopping the application of the power when a value calculated by (a) multiplying the hydrogen ion concentration by the elapsed time or (b) integrating the hydrogen ion concentration with respect to the elapsed time is larger than a first threshold.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: January 2, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masaki Fujikane, Mari Onodera, Yuka Okada
  • Publication number: 20170112735
    Abstract: Provided is a powdered tobermorite-type calcium silicate-based material capable of demonstrating high oil absorption. The powdered tobermorite-type calcium silicate-based material is characterized in that (1) a molar ratio of SiO2/CaO in the material is 1.5 or more, and (2) a cumulative pore volume having a pore size of 3.6 nm to 200 nm in the material is 0.9 cc/g or more, and a cumulative pore volume having a pore size of 3.6 nm to 5000 nm is 2.6 cc/g or more.
    Type: Application
    Filed: March 26, 2015
    Publication date: April 27, 2017
    Inventors: Yuka Okada, Kazuki Kamai, Yuuta Tsumura, Yukinori Konishi
  • Publication number: 20160339128
    Abstract: A liquid treatment method according to an aspect of the present disclosure comprises: starting application of a power between a pair of electrodes to generate plasma, which causes active species to be produced in a liquid; measuring the hydrogen ion concentration in the liquid while the plasma is generated; measuring a time elapsed after the starting the application of the power; and stopping the application of the power when a value calculated by (a) multiplying the hydrogen ion concentration by the elapsed time or (b) integrating the hydrogen ion concentration with respect to the elapsed time is larger than a first threshold.
    Type: Application
    Filed: April 28, 2016
    Publication date: November 24, 2016
    Inventors: MASAKI FUJIKANE, MARI ONODERA, YUKA OKADA
  • Patent number: 9291753
    Abstract: In a diffraction optical element having a structure in which a base and an optical adjustment layer adhere to each other, defects such as cracks and peeling occur in the optical adjustment layer, when the adhesive strength between the base and the optical adjustment layer is degraded. In a diffraction optical element 100 of the present invention, a plurality of anchor grooves 3 are formed in a planar second region 6 of a base 1. Further, a depth of an anchor groove of the plurality of anchor grooves 3, which is positioned on an outermost side, is designed so as to be smaller than a depth of another anchor groove of the plurality of anchor grooves 3, which is positioned on an innermost side. An optical adjustment layer 9 adheres so as to cover a first region 5 in which a diffraction grating 2 is formed and the second region 6 in which the anchor grooves 3 are formed of the base 1.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: March 22, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tatsutoshi Suenaga, Yuka Okada, Akiko Murata
  • Publication number: 20150192711
    Abstract: A diffractive optical element includes a base having, on a surface, a first region with a diffraction grating and a second region located on an outer side of the first region, and an optical adjustment layer provided on the surface to be in contact with the first region and at least a part of the second region. A thin film portion having a film thickness smaller than a maximum film thickness of a portion of the optical adjustment layer in contact with the second region is provided in at least a part of the portion of the optical adjustment layer in contact with the second region.
    Type: Application
    Filed: March 16, 2015
    Publication date: July 9, 2015
    Inventors: YUKA OKADA, KOUICHIROU MATSUOKA
  • Patent number: 8995058
    Abstract: A diffraction grating lens according to the present invention is a diffraction grating lens 11 including: a lens body 12; and a plurality of diffraction steps relative to a base shape and a plurality of diffraction gratings 13 interposed between the diffraction steps, provided on a surface of the lens body 12. The lens body 12 is made of a first material having a refractive index n1(?) at a used wavelength ?; the diffraction grating 13 is in contact with air; and the relationship of an inequality below is satisfied, where d is a design step length of the diffraction steps, and m is an order of diffraction.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: March 31, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yuka Okada, Takamasa Ando, Tsuguhiro Korenaga
  • Publication number: 20140313584
    Abstract: To provide a highly workable diffractive optical element which realizes a high refractive index and a low wavelength dispersiveness well balanced with each other and which exhibits high heat resistance and high endurance against temperature changes, a diffractive optical element includes a base member including a diffraction grating formed on a surface thereof and a protective film provided on the surface of the base member where the diffraction grating is formed, wherein the base member is composed of a silsesquioxane resin material or a dendrimer material which has a first refractive index and a first Abbe number and wherein the protective film is composed of a silicone resin material which has a second refractive index smaller than the first refractive index and a second Abbe number smaller than the first Abbe number.
    Type: Application
    Filed: October 30, 2012
    Publication date: October 23, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Yasuyuki Hanada, Tsuguhiro Korenaga, Yuka Okada
  • Patent number: 8736958
    Abstract: A diffractive optical element according to the present invention includes: a body 1 being composed of a first optical material containing a first resin, and having a diffraction grating 2 on a surface thereof; and an optical adjustment layer 3 being composed of a second optical material containing a second resin, and provided on the body so as to cover the diffraction grating. A difference between a solubility parameter of the first resin and a solubility parameter of the second resin is 0.8 [cal/cm3]1/2 or more, and the first resin and the second resin each have a benzene ring.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: May 27, 2014
    Assignee: Panasonic Corporation
    Inventors: Akiko Murata, Yuka Okada
  • Publication number: 20140139923
    Abstract: A diffractive optical element disclosed in the present application includes: a base which is made of a first optical material containing a first resin and which has a diffraction grating in its surface; and an optical adjustment layer which is made of a second optical material containing a second resin and inorganic particles and which is provided on the base so as to cover the diffraction grating, wherein ?SP which is defined by a formula shown below is not less than ?0.7 and not more than +0.7 [cal/cm3]1/2: ?SP=[a solubility parameter of the second resin]?[a solubility parameter of the first resin], and a design order of diffraction caused by the diffraction grating is nth order, and unwanted order diffracted light of n+1th order in a wavelength range of not less than 400 nm and not more than 700 nm is not more than 7%.
    Type: Application
    Filed: May 24, 2013
    Publication date: May 22, 2014
    Inventors: Akiko Murata, Yuka Okada, Tatsutoshi Suenaga
  • Patent number: 8652619
    Abstract: A diffractive optical element according to the present invention includes: a body 1 being composed of a first optical material containing a first resin, and having a diffraction grating 2 on a surface thereof; and an optical adjustment layer 3 being composed of a second optical material containing a second resin, and provided on the body 1 so as to cover the diffraction grating 2. The first optical material has a refractive index which is smaller than a refractive index of the second optical material; the refractive index of the first optical material has a wavelength dispersion which is greater than a wavelength dispersion of the refractive index of the second optical material; and a difference in solubility parameter between the first resin and the second resin is no less than 0.8 [cal/cm3]1/2 and no more than 2.5 [cal/cm3]1/2.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: February 18, 2014
    Assignee: Panasonic Corporation
    Inventors: Akiko Murata, Yuka Okada
  • Publication number: 20140043687
    Abstract: A diffractive optical element includes: a body being composed of a first optical material and having a diffraction grating on the surface thereof; and an optical adjustment layer being composed of a second optical material and provided on the body so as to cover the diffraction grating. An envelope passing through the edge of the diffraction grating presents a curved surface, and the optical adjustment layer has a uniform thickness along the normal direction from the envelope.
    Type: Application
    Filed: June 6, 2012
    Publication date: February 13, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Akiko Murata, Yuka Okada, Tatsutoshi Suenaga, Takamasa Ando