Patents by Inventor Keisuke Kitano

Keisuke Kitano 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: 20240299907
    Abstract: Provided is a particulate water absorbent with which an absorbent body having an excellent speed of incorporating liquid and enabling reduction in release amount can be produced. The particulate water absorbent contains poly(meth)acrylic acid (salt)-based water-absorbing resin particles as a main component, and the particulate water absorbent includes a cavity that is a space connecting to outside and a void that is a closed space not connecting to outside, in which a cavity ratio to a total volume is 10% by volume or more, and a void ratio to a total volume is 0.5% by volume or less.
    Type: Application
    Filed: February 25, 2022
    Publication date: September 12, 2024
    Inventors: Keisuke FUJITA, Yoshifumi ADACHI, Tsuyoshi YORINO, Mai SATO, Ryota WAKABAYASHI, Atsuhiro NODA, Junya UEDA, Jumpei KANEKO, Hiroko UEDA, Mariko TAMAKI, Yuika NODA, Takahiro KITANO, Kazushi TORII, Hiroyuki IKEUCHI
  • Publication number: 20240240076
    Abstract: An EML includes: quantum dots; inorganic ligands; and alkanolamine. In a unit volume of the EML, a molar ratio of the alkanolamine to the inorganic ligands is in a range of 10 or more and 1000 or less.
    Type: Application
    Filed: May 20, 2021
    Publication date: July 18, 2024
    Inventors: Kazuki GOTO, Keisuke KITANO, Ryo KITAMURA, Masaki YAMAMOTO
  • Publication number: 20240224561
    Abstract: A light-emitting element according to the disclosure includes a cathode, an anode, and a light-emitting layer provided between the cathode and the anode. The light-emitting layer includes a quantum dot, a plurality of first ions, and a plurality of second ions. Each of the first ions is an anion, and each of the second ions is a cation. The anion is any one of S2?, Se2?, and Te2?, and the cation is composed of a nonmetallic element.
    Type: Application
    Filed: May 20, 2021
    Publication date: July 4, 2024
    Inventors: Keisuke KITANO, Kazuki GOTO, Masaki YAMAMOTO
  • Patent number: 11984053
    Abstract: An inspection circuit in a display device includes: a measuring circuit configured to sweep a voltage to the display device and to measure a current value that flows in a light-emitting element in response to a voltage value applied; a computation circuit configured to compute a first derivative value of the current value with respect to the voltage value, the first derivative value representing voltage dependence of a first derivative of the current value; a peak determination circuit configured to determine a peak of the first derivative value; and a processing circuit configured to process the light-emitting element based on a result of the determination by the peak determination circuit.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: May 14, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hirohisa Yamada, Keisuke Kitano, Yusuke Sakakibara
  • Publication number: 20240107792
    Abstract: A light-emitting element includes an anode electrode, a cathode electrode, and a QD layer provided between the anode electrode and the cathode electrode, the QD layer containing the QDs. The QDs are AgInxGa1-xSySe1-y-based or ZnAgInxGa1-xSySe1-y-based Cd-free QDs (0?x<1, 0?y?1) and exhibit fluorescence characteristics having a fluorescent half width of 45 nm or less and a fluorescence quantum yield of 35% or more in a green wavelength region to a red wavelength region.
    Type: Application
    Filed: February 18, 2021
    Publication date: March 28, 2024
    Inventors: Kazuki GOTO, YUSUKE SAKAKIBARA, Yuma YAGUCHI, Keisuke KITANO, Masaki YAMAMOTO, Soichiro NIKATA, Yoko MICHIWAKI, Yuko OGURA, Vit KALOUSEK, Akio MISHIMA
  • Publication number: 20230380202
    Abstract: A light-emitting device includes: a first electrode; a second electrode; a light-emitting layer disposed between the first electrode and the second electrode; and a hole transport layer disposed between the first electrode and the light-emitting layer, wherein the light-emitting layer includes a first quantum dot including a first core with an emission peak in a visible light region, and a second quantum dot including a second core with an emission peak in a near-ultraviolet region or an ultraviolet region.
    Type: Application
    Filed: September 18, 2020
    Publication date: November 23, 2023
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: YOSHIHIRO UETA, Keisuke KITANO
  • Publication number: 20230363192
    Abstract: A light-emitting element includes the following: a cathode; an anode; and a light-emitting layer disposed between the cathode and the anode, and containing a quantum dot including a core and a shell, wherein the core contains a dopant.
    Type: Application
    Filed: September 11, 2020
    Publication date: November 9, 2023
    Inventors: MASAYA UEDA, Keisuke KITANO, Masaki YAMAMOTO, MAKOTO IZUMI, YOSHIHIRO UETA
  • Publication number: 20230284469
    Abstract: A light-emitting element includes: a first light-emitting layer containing quantum dots and emitting a first light including a first peak wavelength; a second light-emitting layer containing quantum dots and emitting a second light including a second peak wavelength greater than the first peak wavelength; a substrate on which the first light-emitting layer and the second light-emitting layer are arranged side-by-side in a first direction; and a first bank provided on the substrate and dividing the first light-emitting layer from the second light-emitting layer. The first bank is transparent to the first light.
    Type: Application
    Filed: August 4, 2020
    Publication date: September 7, 2023
    Inventors: Keisuke KITANO, Masaki YAMAMOTO
  • Publication number: 20230186804
    Abstract: An inspection circuit in a display device includes: a measuring circuit configured to sweep a voltage to the display device and to measure a current value that flows in a light-emitting element in response to a voltage value applied; a computation circuit configured to compute a first derivative value of the current value with respect to the voltage value, the first derivative value representing voltage dependence of a first derivative of the current value; a peak determination circuit configured to determine a peak of the first derivative value; and a processing circuit configured to process the light-emitting element based on a result of the determination by the peak determination circuit.
    Type: Application
    Filed: April 8, 2020
    Publication date: June 15, 2023
    Inventors: HIROHISA YAMADA, Keisuke KITANO, YUSUKE SAKAKIBARA
  • Publication number: 20230147514
    Abstract: A light-emitting element includes a light-emitting layer including quantum dots, a selectively reflective layer, the selectively reflective layer having a reflection band having a higher reflectivity than a reflectivity of another band, and a wavelength at a long wavelength end in the reflection band of the selectively reflective layer is longer than a wavelength having a half value of a peak value of a light emission spectrum due to electroluminescence of the quantum dots at a shorter wavelength side than a peak wavelength of the light emission spectrum due to the electroluminescence of the quantum dots, and is shorter than a wavelength having the half value of the peak value of the light emission spectrum due to the electroluminescence of the quantum dots at a longer wavelength side than the peak wavelength of the light emission spectrum due to the electroluminescence of the quantum dots.
    Type: Application
    Filed: March 26, 2020
    Publication date: May 11, 2023
    Inventors: Keisuke KITANO, Masaki YAMAMOTO
  • Publication number: 20230113212
    Abstract: A method of manufacturing a display device includes: the measurement step of sweeping a voltage to light-emitting elements and measuring a current value that flows in the light-emitting elements in response to a voltage value applied; the computation step of computing a first derivative value of the current value with respect to the voltage value, the first derivative value representing voltage dependence of a first derivative of the current value; the peak determination step of determining a peak of the first derivative value; the processing step of processing the light-emitting elements based on a result of the peak determination step; and the attaching step of attaching a housing to the substrate.
    Type: Application
    Filed: April 8, 2020
    Publication date: April 13, 2023
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: HIROHISA YAMADA, Keisuke KITANO, YUSUKE SAKAKIBARA
  • Publication number: 20230098487
    Abstract: A method for analyzing a cause of prolonging coagulation time of a blood specimen includes: adding a calcium solution to a first sample resulting from a first waiting time from mixing of a blood specimen from a subject and a measurement reagent for an activated partial thromboplastin time; obtaining a first coagulation time and/or a first parameter regarding a differential of a coagulation waveform, for the first sample; adding the calcium solution to a second sample resulting from a second waiting time, which is longer than the first waiting time, from mixing of the blood specimen from the subject and the measurement reagent; obtaining a second coagulation time and/or a second parameter regarding a differential of a coagulation waveform, for the second sample; and obtaining information regarding a cause of prolonging a coagulation time, on the basis of the first and second coagulation time and/or the first and second parameter.
    Type: Application
    Filed: September 28, 2022
    Publication date: March 30, 2023
    Applicants: NIIGATA UNIVERSITY, SYSMEX CORPORATION
    Inventors: Takeshi SUZUKI, Masato MATSUDA, Masato MORIYAMA, Sho SHINOHARA, Keisuke KITANO, Tsukasa SUETAKE, Yutaka KOMIYAMA
  • Publication number: 20230080877
    Abstract: The electroluminescent element includes an anode electrode, a cathode electrode, and a quantum dot (QD) layer including quantum dots and arranged between the anode electrode and the cathode electrode. The quantum dots are Cd-free quantum dots that include at least Zn and Se, and do not include Cd at a mass ratio of 1/30 or greater in relation to Zn. The particle size of each quantum dot is within a range from 3 nm to 20 nm.
    Type: Application
    Filed: February 17, 2020
    Publication date: March 16, 2023
    Inventors: Masaki YAMAMOTO, Hirohisa YAMADA, Yoshihiro UETA, Keisuke KITANO, Kazuki GOTO, Yusuke SAKAKIBARA, Tadashi KOBASHI, Masashi KAGO, Soichiro NIKATA, Yuko OGURA, Masanori TANAKA, Yuka TAKAMIZUMA, Tetsuji ITO
  • Publication number: 20200382048
    Abstract: The present invention provides a thermal radiation light source that allows a wider range of material choices than those of conventional techniques, so that light having a desired peak wavelength can easily be obtained. A thermal radiation light source 10 includes a thermo-optical converter made of an optical structure in which a refractive index distribution is formed in a member 11 made of an intrinsic semiconductor so as to resonate with light of a shorter wavelength than a wavelength corresponding to a bandgap of the intrinsic semiconductor. When heat is externally supplied to the thermo-optical converter, light having a spectrum in a band of shorter wavelengths than a cutoff wavelength is produced by interband absorption in the intrinsic semiconductor, and light of a resonant wavelength ?r in the wavelength band, the light causing resonance in the optical structure, is selectively intensified and emitted as thermal radiation light.
    Type: Application
    Filed: August 20, 2020
    Publication date: December 3, 2020
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Susumu NODA, Tatsuya SHIBAHARA, Menaka DE ZOYSA, Takashi ASANO, Keisuke KITANO, Katsuyoshi SUZUKI, Takuya INOUE, Kenji ISHIZAKI
  • Publication number: 20160049897
    Abstract: A thermal emission source that allows a wider range of material choices than those of conventional techniques, so that light having a desired peak wavelength can easily be obtained. A thermal emission source includes a thermo-optical converter composed of an optical structure in which a refractive index distribution is formed in a member made of an intrinsic semiconductor so as to resonate with light of a shorter wavelength than a wavelength corresponding to a bandgap of the intrinsic semiconductor. When heat is externally supplied to the thermo-optical converter, light having a spectrum in a band of shorter wavelengths than a cutoff wavelength is produced by interband absorption in the intrinsic semiconductor, and light of a resonant wavelength ?r in the wavelength band, the light causing resonance in the optical structure, is selectively intensified and emitted as thermal emission.
    Type: Application
    Filed: February 28, 2014
    Publication date: February 18, 2016
    Inventors: Susumu NODA, Tatsuya SHIBAHARA, Menaka DE ZOYSA, Takashi ASANO, Keisuke KITANO, Katsuyoshi SUZUKI, Takuya INOUE, Kenji ISHIZAKI
  • Patent number: 6191328
    Abstract: HFC-245fa is effectively separated from the mixture comprising 1,1,1,3,3-pentafluoropropane (HFC-245fa) and HF through a purification process comprising contacting at least one extraction agent selected from the group consisting of (a) a compound corresponds to the general formula (I): CxFyHz, (b) a compound corresponds to the general formula (II): R1R2R3N, (c) an compound corresponds to the general formula (III): R4OR5 and (d) a compound corresponds to the general formula (IV): ClClmHn with a mixture comprising 1,1,1,3,3-pentafluoropropane and hydrogen fluoride so as to form a liquid mixture and separating the liquid mixture into two liquid layers, followed by obtaining an extraction agent phase including HFC-245fa and the extraction agent as the main components, and separatively recovering HFC-245fa from the extraction agent phase.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: February 20, 2001
    Assignee: Daikin Industries, Ltd.
    Inventors: Keisuke Kitano, Tatsuo Nakada, Takashi Shibanuma
  • Patent number: 5145606
    Abstract: The present invention provides blowing compositions for preparing foamed or expanded products of thermoplastics. Each of the blowing compositions comprises a combination of two of halogenated hydrocarbons.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: September 8, 1992
    Assignee: Daikin Industries, Ltd.
    Inventors: Yukio Omure, Keisuke Kitano, Naoyoshi Hanatani