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).
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Publication number: 20240299907Abstract: 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: ApplicationFiled: February 25, 2022Publication date: September 12, 2024Inventors: 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
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Publication number: 20240240076Abstract: 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: ApplicationFiled: May 20, 2021Publication date: July 18, 2024Inventors: Kazuki GOTO, Keisuke KITANO, Ryo KITAMURA, Masaki YAMAMOTO
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Publication number: 20240224561Abstract: 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: ApplicationFiled: May 20, 2021Publication date: July 4, 2024Inventors: Keisuke KITANO, Kazuki GOTO, Masaki YAMAMOTO
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Patent number: 11984053Abstract: 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: GrantFiled: April 8, 2020Date of Patent: May 14, 2024Assignee: SHARP KABUSHIKI KAISHAInventors: Hirohisa Yamada, Keisuke Kitano, Yusuke Sakakibara
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Publication number: 20240107792Abstract: 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: ApplicationFiled: February 18, 2021Publication date: March 28, 2024Inventors: Kazuki GOTO, YUSUKE SAKAKIBARA, Yuma YAGUCHI, Keisuke KITANO, Masaki YAMAMOTO, Soichiro NIKATA, Yoko MICHIWAKI, Yuko OGURA, Vit KALOUSEK, Akio MISHIMA
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Publication number: 20230380202Abstract: 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: ApplicationFiled: September 18, 2020Publication date: November 23, 2023Applicant: SHARP KABUSHIKI KAISHAInventors: YOSHIHIRO UETA, Keisuke KITANO
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Publication number: 20230363192Abstract: 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: ApplicationFiled: September 11, 2020Publication date: November 9, 2023Inventors: MASAYA UEDA, Keisuke KITANO, Masaki YAMAMOTO, MAKOTO IZUMI, YOSHIHIRO UETA
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Publication number: 20230284469Abstract: 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: ApplicationFiled: August 4, 2020Publication date: September 7, 2023Inventors: Keisuke KITANO, Masaki YAMAMOTO
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Publication number: 20230186804Abstract: 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: ApplicationFiled: April 8, 2020Publication date: June 15, 2023Inventors: HIROHISA YAMADA, Keisuke KITANO, YUSUKE SAKAKIBARA
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Publication number: 20230147514Abstract: 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: ApplicationFiled: March 26, 2020Publication date: May 11, 2023Inventors: Keisuke KITANO, Masaki YAMAMOTO
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Publication number: 20230113212Abstract: 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: ApplicationFiled: April 8, 2020Publication date: April 13, 2023Applicant: SHARP KABUSHIKI KAISHAInventors: HIROHISA YAMADA, Keisuke KITANO, YUSUKE SAKAKIBARA
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Publication number: 20230098487Abstract: 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: ApplicationFiled: September 28, 2022Publication date: March 30, 2023Applicants: NIIGATA UNIVERSITY, SYSMEX CORPORATIONInventors: Takeshi SUZUKI, Masato MATSUDA, Masato MORIYAMA, Sho SHINOHARA, Keisuke KITANO, Tsukasa SUETAKE, Yutaka KOMIYAMA
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Publication number: 20230080877Abstract: 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: ApplicationFiled: February 17, 2020Publication date: March 16, 2023Inventors: 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
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Publication number: 20200382048Abstract: 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: ApplicationFiled: August 20, 2020Publication date: December 3, 2020Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Susumu NODA, Tatsuya SHIBAHARA, Menaka DE ZOYSA, Takashi ASANO, Keisuke KITANO, Katsuyoshi SUZUKI, Takuya INOUE, Kenji ISHIZAKI
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Publication number: 20160049897Abstract: 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: ApplicationFiled: February 28, 2014Publication date: February 18, 2016Inventors: Susumu NODA, Tatsuya SHIBAHARA, Menaka DE ZOYSA, Takashi ASANO, Keisuke KITANO, Katsuyoshi SUZUKI, Takuya INOUE, Kenji ISHIZAKI
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Patent number: 6191328Abstract: 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: GrantFiled: December 22, 1998Date of Patent: February 20, 2001Assignee: Daikin Industries, Ltd.Inventors: Keisuke Kitano, Tatsuo Nakada, Takashi Shibanuma
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Patent number: 5145606Abstract: 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: GrantFiled: June 17, 1991Date of Patent: September 8, 1992Assignee: Daikin Industries, Ltd.Inventors: Yukio Omure, Keisuke Kitano, Naoyoshi Hanatani