Patents by Inventor Kei Sakamoto

Kei Sakamoto 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: 20200245234
    Abstract: A vehicle-mounted gateway apparatus according to an embodiment includes a communication device including an external communication interface for connection to the network outside the mobile body with each of a plurality of different external communication schemes and an internal communication interface for connection to each of the plurality of data sources within the mobile body; and a control device configured to transmit data collected from each of the data sources through the internal communication interface to the network outside the mobile body. The control device includes a communication channel selection section configured to select a communication channel from the plurality of external communication schemes for each of the data sources, and a monitoring control section configured to monitor data output from each of the data sources and to transmit the data to the network outside the mobile body over a selected one of the communication channels associated with the data source.
    Type: Application
    Filed: May 23, 2017
    Publication date: July 30, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masayuki OMIYA, Kazuhiro GOTOU, Masashi UEMOTO, Daichi SOSHI, Kazunori HASHIMOTO, Hirokazu IKEYAMA, Yousuke OJIHARA, Satoru IWAHASHI, Akifumi OHNO, Kei SAKAMOTO, Ken ISHII, Shion ITOU
  • Publication number: 20200219635
    Abstract: A covered electrical wire including a conductor and an insulating coating layer covering the outer periphery of the conductor, in which the conductor is a twisted wire obtained by twisting together a plurality of elemental wires constituted by copper or a copper alloy, and the covered electrical wire includes a metallically bonded portion where the elemental wires that are adjacent to each other are metallically bonded to each other.
    Type: Application
    Filed: July 4, 2018
    Publication date: July 9, 2020
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hiroyuki KOBAYASHI, Kei SAKAMOTO
  • Publication number: 20200148622
    Abstract: Disclosed is a mixture containing compound (I) and polymerizable compound (II) wherein compound (I) accounts for 50 mol % or more of the entire mixture and 1,4-cyclohexanedicarboxylic acid accounts for less than 5 mol % of the entire mixture; a method of producing the mixture which includes reacting in a water-immiscible organic solvent 1,4-cyclohexanedicarboxylic acid dichloride with compound (IV) in the presence of a base, and washing the obtained reaction solution with a weakly acidic buffer solution; etc. The disclosure provides mixtures useful for low-cost production of polymerizable compounds which have low melting points suitable for practical use, show superior solubility to general-purpose solvents, can be produced at low costs, and allow for provision of optical films capable of uniform polarized light conversion over a wide wavelength range, and methods of producing the mixtures. where A represents hydrogen, methyl group or chlorine, and n represents an integer of 1 to 20.
    Type: Application
    Filed: January 16, 2020
    Publication date: May 14, 2020
    Applicant: ZEON CORPORATION
    Inventors: Kei SAKAMOTO, Kumi OKUYAMA, Kanako SANUKI
  • Patent number: 10647794
    Abstract: The invention provides a polymerizable compound of formula (I), polymerizable composition, polymer, and optically anisotropic article capable of obtaining an optical film having a low melting point, excellent solubility, being manufactured at low cost, and of uniform polarized light conversion across a broad wavelength region. In formula (I): Y1 to Y6 are independently a chemical single bond, —O—, —O—C(?O)—, —C(?O)—O—; G1 and G2 are independently a divalent C1-C20 aliphatic group; Z1 and Z2 are independently a C2-C10 alkenyl group substituted with a halogen atom; Ax is a C2-C30 organic group that includes at least one aromatic ring of an aromatic hydrocarbon ring or an aromatic hetero ring; Ay is H, a C1-C20 alkyl group, a C2-C20 alkenyl group, a C3-C12 cycloalkyl group; A1 is a trivalent aromatic group; A2 and A3 are independently a divalent C6-C30 aromatic group; and Q1 is H, or a C1-C6 alkyl group.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: May 12, 2020
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama
  • Patent number: 10633323
    Abstract: Provided is a method of producing an acid halide solution that is useful in production of a polymerizable liquid-crystal compound. The method of producing an acid halide solution includes: a first step of reacting a specific dicarboxylic acid compound with a halogenating agent in a water-immiscible organic solvent in the presence of at least 1.1 equivalents and not more than 3.0 equivalents of an activator relative to the dicarboxylic acid compound to obtain a reaction liquid including a solution that contains an acid halide compound and an oily liquid that is immiscible with the solution containing the acid halide compound; and a second step of removing the oily liquid from the reaction liquid obtained in the first step to obtain a purified liquid containing the acid halide compound.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: April 28, 2020
    Assignee: ZEON CORPORATION
    Inventors: Kanako Sanuki, Kei Sakamoto, Kumi Okuyama, Hiroki Iwaki
  • Patent number: 10633319
    Abstract: Provided is a method of efficiently producing a solution composition containing a monoetherified product (III) using a hydroquinone compound (I) and a hydroxyl group-containing etherifying agent (II). The method of producing a solution composition includes: a step (1) of reacting a hydroquinone compound (I) and a hydroxyl group-containing etherifying agent (II) in a two-phase system including an alkaline aqueous solution and a hydrophobic ether solvent, and in the absence of a phase transfer catalyst and a hydrophilic organic solvent; and a step (2) of separating and removing an aqueous phase of a two-phase reaction liquid by liquid separation, and washing an organic phase using an aqueous solution containing a neutral inorganic salt and a hydroxide of an alkali metal, or the like.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: April 28, 2020
    Assignee: ZEON CORPORATION
    Inventors: Satoshi Kiriki, Kei Sakamoto
  • Publication number: 20200115482
    Abstract: In a mixture, a content of a polymerizable compound (I) represented by the following Formula (I) is more than 0.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 16, 2020
    Applicant: ZEON Corporation
    Inventors: Kei SAKAMOTO, Kumi OKUYAMA
  • Patent number: 10577306
    Abstract: Disclosed is a mixture containing compound (I) and polymerizable compound (II) wherein compound (I) accounts for 50 mol % or more of the entire mixture and 1,4-cyclohexanedicarboxylic acid accounts for less than 5 mol % of the entire mixture; a method of producing the mixture which includes reacting in a water-immiscible organic solvent 1,4-cyclohexanedicarboxylic acid dichloride with compound (IV) in the presence of a base, and washing the obtained reaction solution with a weakly acidic buffer solution; etc. The disclosure provides mixtures useful for low-cost production of polymerizable compounds which have low melting points suitable for practical use, show superior solubility to general-purpose solvents, can be produced at low costs, and allow for provision of optical films capable of uniform polarized light conversion over a wide wavelength range, and methods of producing the mixtures. where A represents hydrogen, methyl group or chlorine, and n represents an integer of 1 to 20.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: March 3, 2020
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama, Kanako Sanuki
  • Publication number: 20200048213
    Abstract: A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article.
    Type: Application
    Filed: October 8, 2019
    Publication date: February 13, 2020
    Applicant: ZEON CORPORATION
    Inventors: Kei SAKAMOTO, Satoshi KIRIKI, Kumi OKUYAMA, Kanako TAIRA
  • Publication number: 20200031786
    Abstract: Disclosed is a polymerizable compound useful for preparing a polymer that enables the production of a film, such as an optical film, which has a good balance of lightness and saturation and which can improve reverse wavelength dispersion on the short wavelength side while achieving reverse wavelength dispersion on the longer wavelength side. The polymerizable compound of the present disclosure is represented by: where in the formula (I-1), A1 and A2 each independently represent an aromatic group which may have a substituent, B1 and B2 each independently represent a cyclic aliphatic group which may have a substituent, or, an aromatic group which may have a substituent, and p and q each independently represent an integer from 0 to 2.
    Type: Application
    Filed: March 12, 2018
    Publication date: January 30, 2020
    Applicant: ZEON CORPORATION
    Inventors: Kei SAKAMOTO, Kumi OKUYAMA, Takanori MIMA
  • Publication number: 20200031971
    Abstract: Provided is a polymerizable composition that is capable of forming an optical film, etc. having excellent reverse wavelength dispersibility, can be prepared at relatively low temperature, and has excellent stability around room temperature.
    Type: Application
    Filed: September 29, 2017
    Publication date: January 30, 2020
    Applicant: ZEON CORPORATION
    Inventors: Kei SAKAMOTO, Kumi OKUYAMA
  • Patent number: 10538477
    Abstract: Provided are a production method for compound (II) including reacting compound (I) with a halogenating agent in the presence of at least 0.5 equivalents, relative to compound (I), of a nitrogen atom-containing polar aprotic solvent; a composition containing compound (II), a halogenating agent or the like, and at least 0.5 equivalents, relative to compound (II), of a nitrogen atom-containing polar aprotic solvent; a stabilization method for compound (II); and compound (II).
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: January 21, 2020
    Assignee: ZEON CORPORATION
    Inventors: Kumi Okuyama, Kei Sakamoto, Kanako Sanuki
  • Publication number: 20200012026
    Abstract: A phase difference plate including a layer of a liquid crystal material oriented in an in-plane direction, wherein an in-plane retardation Re(?) at a wavelength ? nm of the phase difference plate satisfes the following formulae (e1) and (e2): {Re(400)-Re(550)}/{Re(550)-Re(700)}<2.90 (e1), and Re(400)/Re(700) >1.13 (e2); as well as a multilayer phase difference plate including the same, a polarizing plate including the same, and an image display device including the same.
    Type: Application
    Filed: March 16, 2018
    Publication date: January 9, 2020
    Applicant: ZEON CORPORATION
    Inventors: Masakazu SAITO, Kazuhiro OSATO, Masashi AIMATSU, Kei SAKAMOTO
  • Patent number: 10508072
    Abstract: The present disclosure provides a method for producing an acid halide solution that is useful as a production intermediate or the like that allows industrially advantageous production of a polymerizable liquid crystal compound. The method for producing an acid halide solution of the present disclosure includes a step ? of reacting a halogenating agent and a dicarboxylic acid compound in a water-immiscible organic solvent in the presence of a tetraalkylammonium salt to obtain a water-immiscible organic solvent solution including an acid halide, and a step ? of concentrating the obtained water-immiscible organic solvent solution.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: December 17, 2019
    Assignee: ZEON CORPORATION
    Inventors: Kumi Okuyama, Kei Sakamoto, Kanako Sanuki, Hiroki Iwaki
  • Publication number: 20190359890
    Abstract: Provided is a compound represented by the following formula: Y1 to Y8 each represent a chemical single bond, —O—, —S—, —O—C(?O)—, —C(?O)—O—, —O—C(?O)—O—, —NR1—C(?O)—, —C(?O)—NR1—, —O—C(?O)—NR1—, —NR1—C(?O)—O—, —NR1—C(?O)—NR1—, —O—NR1—, or —NR1—O—, R1 being a hydrogen atom or an alkyl group having 1 to 6 carbon atoms. G1 and G2 each represent a divalent linear aliphatic group having 1 to 20 carbon atoms. that optionally includes —O—, —S—, —O—C(?O)—, —C(?O)—O—, —O—C(?O)—O—, —NR3—C(?O)—, —C(?O—NR3—, —NR3—, or —C(?O)—. Z1 and Z2 each represent an alkenyl group having 2 to 10 carbon atoms. A1 represents a trivalent aromatic group. A2 and A3 each represent a divalent alicyclic hydrocarbon group having 3 to 30 carbon atoms. A4 and A5 each represents a divalent aromatic group having 6 to 30 carbon atoms. Q1 represents a alkyl group having 1 to 6 carbon atoms, an organic group having 2 to 30 carbon atoms that includes at least one of an aromatic hydrocarbon ring and a heteroaromatic ring, or a hydrogen atom.
    Type: Application
    Filed: July 16, 2019
    Publication date: November 28, 2019
    Applicant: ZEON CORPORATION
    Inventors: Kei SAKAMOTO, Kumi OKUYAMA
  • Publication number: 20190360074
    Abstract: A covered electrical wire comprising a conductor and an insulating covering layer provided outside the conductor, the conductor being a stranded wire composed of a strand of a plurality of copper alloy wires: composed of a copper alloy containing Fe in an amount of 0.2% by mass or more and 1.5% by mass or less, P in an amount of 0.05% by mass or more and 0.7% by mass or less, Mg in an amount of 0.01% by mass or more and 0.5% by mass or less, and one or more elements selected from C, Si and Mn in an amount of 10 ppm by mass or more and 500 ppm by mass or less in total, with the balance being Cu and impurities; and having a wire diameter of 0.5 mm or less.
    Type: Application
    Filed: November 2, 2017
    Publication date: November 28, 2019
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Kei Sakamoto, Akiko Inoue, Tetsuya Kuwabara, Yoshihiro Nakai, Kazuhiro Nanjo, Kiyotaka Utsunomiya, Taichiro Nishikawa, Minoru Nakamoto, Yusuke Oshima, Yasuyuki Otsuka, Kinji Taguchi, Hiroyuki Kobayashi
  • Patent number: 10487065
    Abstract: A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: November 26, 2019
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Satoshi Kiriki, Kumi Okuyama, Kanako Taira
  • Publication number: 20190355489
    Abstract: A covered electrical wire comprising a conductor and an insulating covering layer provided outside the conductor, the conductor being a stranded wire composed of a strand of a plurality of copper alloy wires: composed of a copper alloy containing Fe in an amount of 0.1% by mass or more and 1.6% by mass or less, Pin an amount of 0.05% by mass or more and 0.7% by mass or less, and Sn in an amount of 0.05% by mass or more and 0.7% by mass or less, with the balance being Cu and impurities; and having a wire diameter of 0.5 mm or less, the copper alloy wire having a tensile strength of 385 MPa or more and a work-hardening exponent of 0.1 or more.
    Type: Application
    Filed: June 21, 2017
    Publication date: November 21, 2019
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Kei SAKAMOTO, Akiko INOUE, Tetsuya KUWABARA, Minoru NAKAMOTO, Yusuke OSHIMA, Yoshihiro NAKAI, Kazuhiro NANJO, Taichiro NISHIKAWA, Kiyotaka UTSUNOMIYA, Yasuyuki OOTSUKA, Kinji TAGUCHI, Hiroyuki KOBAYASHI
  • Publication number: 20190341164
    Abstract: A covered electrical wire comprises a conductor and an insulating covering layer provided outside the conductor, the conductor being a stranded wire composed of a strand of a plurality of copper alloy wires: composed of a copper alloy containing Fe in an amount of 0.2% by mass or more and 1.6% by mass or less, P in an amount of 0.05% by mass or more and 0.4% by mass or less, and Sn in an amount of 0.05% by mass or more and 0.7% by mass or less, with the balance being Cu and impurities, and having a mass ratio of Fe/P of 4.0 or more; and having a wire diameter of 0.5 mm or less.
    Type: Application
    Filed: December 28, 2016
    Publication date: November 7, 2019
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Kei Sakamoto, Akiko Inoue, Tetsuya Kuwabara, Minoru Nakamoto, Yusuke Oshima, Yoshihiro Nakai, Kazuhiro Nanjyo, Taichiro Nishikawa, Kiyotaka Utsunomiya, Yasuyuki Ootsuka, Kinji Taguchi, Hiroyuki Kobayashi
  • Publication number: 20190330399
    Abstract: The objective is to enable production of an optical film having good reverse wavelength dispersion. A mixture contains polymerizable compounds indicated by formulae (I) and (V), shown below. In the formulae: Ar1 and Ar2 are each a prescribed heterocyclic group; A1 to A4 and B1 to B4 are each an optionally substituted alicyclic group or aromatic group; Y1 to Y4, L1 to L4, and Z1 to Z4 are each a prescribed group such as —O—, —CO—O—, or —O—CO—; R1 to R6 are each a hydrogen atom, a methyl group, or a chlorine atom; one of e and f is an integer of 1 to 3 and the other of e and f is an integer of 0 to 3; c, d, i, and j are each an integer of 1 to 20; and a, b, g, and h are each 0 or 1.
    Type: Application
    Filed: November 10, 2017
    Publication date: October 31, 2019
    Applicant: ZEON CORPORATION
    Inventors: Kei SAKAMOTO, Kumi OKUYAMA