Patents by Inventor Kotaro Araya

Kotaro Araya 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: 12085452
    Abstract: It is possible to provide a temperature detection ink, which allows color initialization by a simple method and discolors with addition of time and temperature at a reaction temperature or higher. To solve the problem, the temperature detection ink according to the present invention includes a temperature detection material and a solvent. The temperature detection material has a structure in which a thermosensitive material containing a leuco dye, a color-developing agent, and a decolorant is contained in a microcapsule, or a structure in which a phase containing the thermosensitive material is phase-separated from a matrix material. The thermosensitive material is solidified while being decolored by cooling from a molten state to a glass transition temperature or lower at a predetermined rate or higher. The thermosensitive material has a glass transition temperature of ?20 to 60° C., and a melting point that is 60 to 250° C. and lower than the boiling point of the solvent.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: September 10, 2024
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kohhei Aida, Shunsuke Mori, Kotaro Araya, Shigetaka Tsubouchi, Masahiro Kawasaki
  • Patent number: 11933677
    Abstract: A temperature detecting material comprises a first material containing a first temperature indicating material and a second material containing a second temperature indicating material, wherein the first temperature indicating material and the second temperature indicating material contain a leuco dye, a color developing agent, and a decoloring agent, and have a hysteresis characteristic in their color density-temperature curves, wherein the first temperature indicating material has a color developing temperature in a temperature increase process lower than a decoloring temperature in the temperature increase process, and turns to a non-crystalline state and is kept in a decoloring state when cooled down below the color developing temperature in the temperature increase process with a predetermined cooling speed or more after melting, wherein the second temperature indicating material, a color developing temperature is lower than a decoloring temperature in the temperature increase process, and wherein the co
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: March 19, 2024
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kohhei Aida, Shunsuke Mori, Masahiro Kawasaki, Kotaro Araya
  • Patent number: 11635335
    Abstract: An object of the present invention is to provide a temperature sensing material that changes a color density continuously with the lapse of time at a temperature not lower or higher than a predetermined temperature and a temperature deviation time estimating system using it. In order to achieve the above object, the temperature sensing material according to the present invention is a temperature sensing material having a structure of dispersing a temperature indicating material that changes color by crystallization in a dispersion medium and is characterized in that an average particle size of the temperature indicating material is not larger than a resolution when observed and a volume fraction of the temperature indicating material to the temperature sensing material is not less than 5% to less than 90%.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: April 25, 2023
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kohhei Aida, Shunsuke Mori, Shigetaka Tsubouchi, Shintarou Takeda, Masahiro Kawasaki, Kotaro Araya
  • Patent number: 11572486
    Abstract: An object of the present invention is to provide a temperature detection material that can be manufactured through a simple step and is excellent in handleability. In order to solve the above problem, the temperature detection material according to the present invention includes a temperature-indicating material including a leuco dye, a color developer, and a color eraser and a matrix material; and is characterized in that the matrix material is in a solid state, a melting point of the matrix material is higher than a melting point of the temperature-indicating material, and a phase separation structure in which the temperature-indicating material disperses in the matrix material is formed.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: February 7, 2023
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kohhei Aida, Shunsuke Mori, Masahiro Kawasaki, Kotaro Araya, Hiroshi Sasaki
  • Publication number: 20210063252
    Abstract: It is possible to provide a temperature detection ink, which allows color initialization by a simple method and discolors with addition of time and temperature at a reaction temperature or higher. To solve the problem, the temperature detection ink according to the present invention includes a temperature detection material and a solvent. The temperature detection material has a structure in which a thermosensitive material containing a leuco dye, a color-developing agent, and a decolorant is contained in a microcapsule, or a structure in which a phase containing the thermosensitive material is phase-separated from a matrix material. The thermosensitive material is solidified while being decolored by cooling from a molten state to a glass transition temperature or lower at a predetermined rate or higher. The thermosensitive material has a glass transition temperature of ?20 to 60° C., and a melting point that is 60 to 250° C. and lower than the boiling point of the solvent.
    Type: Application
    Filed: November 16, 2018
    Publication date: March 4, 2021
    Inventors: Kohhei AIDA, Shunsuke MORI, Kotaro ARAYA, Shigetaka TSUBOUCHI, Masahiro KAWASAKI
  • Publication number: 20210010873
    Abstract: An object of the present invention is to provide a temperature sensing material that changes a color density continuously with the lapse of time at a temperature not lower or higher than a predetermined temperature and a temperature deviation time estimating system using it. In order to achieve the above object, the temperature sensing material according to the present invention is a temperature sensing material having a structure of dispersing a temperature indicating material that changes color by crystallization in a dispersion medium and is characterized in that an average particle size of the temperature indicating material is not larger than a resolution when observed and a volume fraction of the temperature indicating material to the temperature sensing material is not less than 5% to less than 90%.
    Type: Application
    Filed: November 6, 2018
    Publication date: January 14, 2021
    Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kohhei AIDA, Shunsuke MORI, Shigetaka TSUBOUCHI, Shintarou TAKEDA, Masahiro KAWASAKI, Kotaro ARAYA
  • Publication number: 20200041359
    Abstract: Please substitute the new Abstract submitted herewith for the original Abstract: A temperature detecting material comprises a first material containing a first temperature indicating material and a second material containing a second temperature indicating material, wherein the first temperature indicating material and the second temperature indicating material contain a leuco dye, a color developing agent, and a decoloring agent, and have a hysteresis characteristic in their color density-temperature curves, wherein the first temperature indicating material has a color developing temperature in a temperature increase process lower than a decoloring temperature in the temperature increase process, and turns to a non-crystalline state and is kept in a decoloring state when cooled down below the color developing temperature in the temperature increase process with a predetermined cooling speed or more after melting, wherein the second temperature indicating material, a color developing temperature is lower than
    Type: Application
    Filed: March 20, 2018
    Publication date: February 6, 2020
    Inventors: Kohhei AIDA, Shunsuke MORI, Masahiro KAWASAKI, Kotaro ARAYA
  • Publication number: 20190300740
    Abstract: An object of the present invention is to provide a temperature detection material that can be manufactured through a simple step and is excellent in handleability. In order to solve the above problem, the temperature detection material according to the present invention includes a temperature-indicating material including a leuco dye, a color developer, and a color eraser and a matrix material; and is characterized in that the matrix material is in a solid state, a melting point of the matrix material is higher than a melting point of the temperature-indicating material, and a phase separation structure in which the temperature-indicating material disperses in the matrix material is formed.
    Type: Application
    Filed: November 17, 2017
    Publication date: October 3, 2019
    Inventors: Kohhei AIDA, Shunsuke MORI, Masahiro KAWASAKI, Kotaro ARAYA, Hiroshi SASAKI
  • Publication number: 20160042836
    Abstract: Provided are an insulated wire which is excellent in heat resistance and pressure resistance, and a rotary electric machine which uses the same. An insulated wire includes an insulating resin layer that is formed on an outer periphery of a conductor, in which the insulating resin layer has a thermoplastic phenoxy resin, an epoxy resin, a cross-linking agent, an inorganic filler, and fine rubber particles.
    Type: Application
    Filed: July 30, 2015
    Publication date: February 11, 2016
    Inventors: Yoshiaki OKABE, Kotaro ARAYA, Takahito MURAKI, Satoru AMOU, Tadashi ARAI
  • Patent number: 8848157
    Abstract: A liquid crystal display includes: a pair of substrates including at least one transparent substrate; a liquid crystal layer disposed between the pair of substrates; and an electrode group formed on at least one of the pair of substrates so as to apply an electric field to the liquid crystal layer. The liquid crystal layer contains at least one kind of liquid crystalline compound and at least one kind of chiral dopant. The concentration c of the chiral dopant is lower than a saturation solubility s thereof. The concentration c of the chiral dopant and a helical twisting power [HTP] of the chiral dopant satisfy a relation of [HTP]·c?5.5 (?m?1).
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: September 30, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Mika Oiwa, Shintaro Takeda, Kotaro Araya, Yasushi Tomioka, Yoshiro Mikami
  • Publication number: 20140141254
    Abstract: Provided is a laminated structure having excellent self-repairing performance, which can be prepared by an inexpensive and simple method; also provided are a self-bonding insulated wire and electrical machine using the same. A self-repairing laminated structure in which a self-repairing resin layer is formed on a base material and a thermosetting resin topcoat is formed on an outer layer thereof is characterized in that the self-repairing resin layer includes an uncured cross-linkable or curable thermoplastic resin, and the thermosetting resin topcoat includes a cross-linking agent, curing agent, or curing catalyst of the cross-linkable thermoplastic resin.
    Type: Application
    Filed: June 29, 2012
    Publication date: May 22, 2014
    Inventors: Kotaro Araya, Satoru Amou
  • Publication number: 20130313537
    Abstract: An organic light-emitting display device is provided that has prolonged service life, lowered wiring resistance that can lower power consumption, and that is easy to manufacture. In a first embodiment, a moisture capturing layer is provided between an upper electrode and a lower electrode. A second embodiment includes a metal substrate, an organic light-emitting element on the substrate and an upper transparent electrode connected to the substrate through a contact hole. In a third embodiment, a method is provided for forming a first organic compound including a light-emitting layer, heating the first organic compound in vacuo, and forming a second organic compound.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 28, 2013
    Applicant: HITACHI, Ltd.
    Inventors: Sukekazu ARATANI, Kazuhito MASUDA, Kotaro ARAYA, Hiroyuki KAGAWA, Shintaro TAKEDA, Shingo ISHIHARA
  • Patent number: 8536611
    Abstract: An organic light-emitting display device is provided that has prolonged service life, lowered wiring resistance that can lower power consumption, and that is easy to manufacture. In a first embodiment, a moisture capturing layer is provided between an upper electrode and a lower electrode. A second embodiment includes a metal substrate, an organic light-emitting element on the substrate and an upper transparent electrode connected to the substrate through a contact hole. In a third embodiment, a method is provided for forming a first organic compound including a light-emitting layer, heating the first organic compound in vacuo, and forming a second organic compound.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: September 17, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Sukekazu Aratani, Kazuhito Masuda, Kotaro Araya, Hiroyuki Kagawa, Shintaro Takeda, Shingo Ishihara
  • Patent number: 8514359
    Abstract: Provided is a liquid crystal display device, including: a liquid crystal layer filled between a first and a second substrate; two polymer structures; and a plurality of pixels each including a first and a second electrode, one of the first and the second electrode being a pixel electrode, in which: each of the plurality of pixels is provided within a region surrounded by a signal line, a part of the signal line being formed between adjacent two of the plurality of pixels; each of the two polymer structures, which extends along the part of the signal line so as to sandwich the part of the signal line in plan view and is formed from one of the first and the second substrate toward another thereof, is formed so as to overlap with any of the region; and the two adjacent polymer structures has the liquid crystal layer provided therebetween.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: August 20, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Shintaro Takeda, Kotaro Araya, Yasushi Tomioka, Masaki Matsumori, Yoshiro Mikami
  • Patent number: 8395750
    Abstract: There is provided a liquid crystal device that exhibits excellent response properties over a wide temperature range even when the weight percentage of the polymerizable monomer used for generating polymers is decreased. The liquid crystal device according to the present invention is a liquid crystal device which includes a first substrate and a second substrate, at least one of which has an electrode group formed thereon for driving liquid crystals; and a liquid crystal layer sandwiched between the first substrate and the second substrate, in which the liquid crystal layer contains a polymer which is eccentrically distributed on at least one substrate side among the first substrate and the second substrate.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: March 12, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Kotaro Araya, Shintaro Takeda, Yasushi Tomioka
  • Publication number: 20130048853
    Abstract: An adsorbent that enables solid phase extraction with high efficiency and good selectivity of solutes having a broad chromatographic polarity range including high-polarity solute molecules while suppressing adsorption of impurities, and a solid phase extraction method therefor are provided. A heterocyclic-ring-containing copolymer adsorbent that is provided herein comprises a copolymer that comprises: a multifunctional heterocyclic-ring-containing monomer having a heterocyclic ring containing at least two heteroatoms in the ring system; and a monomer that is copolymerizable with the multifunctional heterocyclic-ring-containing monomer, wherein the multifunctional heterocyclic ring constitutes the main chain structure.
    Type: Application
    Filed: April 28, 2011
    Publication date: February 28, 2013
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Jun Nunoshige, Hiroyuki Kagawa, Shinya Ito, Katsuhiro Kanda, Izumi Waki, Kotaro Araya, Terumi Tamura
  • Patent number: 8330930
    Abstract: Provided is a liquid crystal display device including: a plurality of column spacers and a first alignment film which are formed above the first substrate; an insulating layer which is formed on the second substrate and a second alignment film which is formed on the insulating layer; and column spacer receiving members which are provided between the insulating layer and the second alignment film in places opposed to the plurality of column spacers, the column spacer receiving members each being made of a material different from both of a material of the insulating layer and a material of the second alignment film, in which a thickness of the second alignment film in places above the column spacer receiving members is ? or less of a thickness of the second alignment film in places in which the second alignment film is formed directly on the insulating layer.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: December 11, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masaki Matsumori, Yasushi Tomioka, Kotaro Araya
  • Publication number: 20120075563
    Abstract: Provided is a liquid crystal display device, including: a liquid crystal layer filled between a first and a second substrate; two polymer structures; and a plurality of pixels each including a first and a second electrode, one of the first and the second electrode being a pixel electrode, in which: each of the plurality of pixels is provided within a region surrounded by a signal line, a part of the signal line being formed between adjacent two of the plurality of pixels; each of the two polymer structures, which extends along the part of the signal line so as to sandwich the part of the signal line in plan view and is formed from one of the first and the second substrate toward another thereof, is formed so as to overlap with any of the region; and the two adjacent polymer structures has the liquid crystal layer provided therebetween.
    Type: Application
    Filed: August 19, 2011
    Publication date: March 29, 2012
    Inventors: Shintaro TAKEDA, Kotaro Araya, Yasushi Tomioka, Masaki Matsumori, Yoshiro Mikami
  • Publication number: 20110101401
    Abstract: Disclosed is an organic light-emitting display device that comprises a light-emitting layer formable simply by a wet process and has a prolonged service life. Also disclosed is an organic light-emitting device that comprises an upper transparent electrode having a lowered wiring resistance that can lower wiring resistance-derived power consumption. Further disclosed are a method and an apparatus for manufacturing an organic light-emitting element having a prolonged service life. In a first embodiment, an organic light-emitting display device is provided that comprises a moisture capturing layer provided between an upper electrode and a lower electrode. In a second embodiment, an organic light-emitting apparatus is provided that comprises a metal substrate, an organic light-emitting element provided on the metal substrate, and an upper transparent electrode connected electrically to the metal substrate through a contact hole.
    Type: Application
    Filed: June 15, 2009
    Publication date: May 5, 2011
    Inventors: Sukekazu Aratani, Kazuhito Masuda, Kotaro Araya, Hiroyuki Kagawa, Shintaro Takeda, Shingo Ishihara
  • Publication number: 20110075073
    Abstract: A liquid crystal display includes: a pair of substrates including at least one transparent substrate; a liquid crystal layer disposed between the pair of substrates; and an electrode group formed on at least one of the pair of substrates so as to apply an electric field to the liquid crystal layer. The liquid crystal layer contains at least one kind of liquid crystalline compound and at least one kind of chiral dopant. The concentration c of the chiral dopant is lower than a saturation solubility s thereof. The concentration c of the chiral dopant and a helical twisting power [HTP] of the chiral dopant satisfy a relation of [HTP]·c?5.5 (?m?1).
    Type: Application
    Filed: August 20, 2010
    Publication date: March 31, 2011
    Inventors: Mika Oiwa, Shintaro Takeda, Kotaro Araya, Yasushi Tomioka, Yoshiro Mikami