Patents by Inventor Kumi Okuyama

Kumi Okuyama 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: 11203716
    Abstract: Disclosed is a mixture containing polymerizable compounds having Formulas (III) and (IV) wherein Ar1 and Ar2 are divalent aromatic hydrocarbon or heteroaromatic ring group having D1 or D2 as a substituent; D1 and D2 are C1-C20 organic group having at least one aromatic ring selected from the group consisting of aromatic hydrocarbon ring and heteroaromatic ring; A11-A22 and B11-B22 are alicyclic or aromatic group which may have a substituent, Y11-Y22 and L11-L22 are single bond, —O—, —CO—, —CO—O—, —O—CO—, —NR21—CO—, —CO—NR22—, —O—CO—O—, —NR23—CO—O—, —O—CO—NR24— or —NR25—CO—NR26— where R21—R26 are hydrogen or C1-C6 alkyl group; R4—R9 are hydrogen, methyl group or chlorine; one of f and k is integer of 1 to 3 with the other being integer of 0 to 3; g, j, m and q are integer of 1 to 20; and h, i, n and p are 0 or 1.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: December 21, 2021
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama, Satoshi Kiriki
  • Patent number: 11091452
    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 8, 2019
    Date of Patent: August 17, 2021
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Satoshi Kiriki, Kumi Okuyama, Kanako Taira
  • Patent number: 10954443
    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: Grant
    Filed: July 16, 2019
    Date of Patent: March 23, 2021
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama
  • Patent number: 10934246
    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: January 16, 2020
    Date of Patent: March 2, 2021
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama, Kanako Sanuki
  • Publication number: 20200283399
    Abstract: Disclosed is a method of producing a polymerizable compound that enables production of, in high yield, a polymerizable compound used for producing an optical film or the like. The disclosed method of producing a polymerizable compound comprises reacting a compound represented by formula (I) with a compound represented by formula (II) in an organic solvent in which a base having a pKa from 6.1 to 9.5 is present, so as to obtain a reaction solution containing a polymerizable compound represented by formula (III).
    Type: Application
    Filed: March 19, 2018
    Publication date: September 10, 2020
    Applicant: ZEON CORPORATION
    Inventors: Kumi OKUYAMA, Kei SAKAMOTO, Takanori MIMA
  • Publication number: 20200262801
    Abstract: Disclosed is a polymerizable compound useful in the preparation of a polymer which is capable of producing, for example, an optical film having excellent in-plane thickness uniformity and improved in-plane uniformity in optical properties.
    Type: Application
    Filed: March 16, 2018
    Publication date: August 20, 2020
    Applicant: ZEON CORPORATION
    Inventors: Kei SAKAMOTO, Kumi OKUYAMA, Takanori MIMA
  • Patent number: 10730844
    Abstract: A compound which is represented by a formula (IIa), wherein each of Y1 to Y8 independently represents 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 represents a hydrogen atom or an alkyl group; each of G1 and G2 independently represents a divalent linear aliphatic group; each of Z1 and Z2 independently represents an alkenyl group; Ax represents a group represented by a formula (II), wherein X represents —NR2—, an oxygen atom, a sulfur atom, and R2 represents a hydrogen atom or an alkyl group; D represents an alkylene group or a cycloalkanediyl group; A1 represents a trivalent aromatic group; each of A2 and A3 independently represents a divalent alicyclic hydrocarbon group; each of A4 and A5 independently represents a divalent aromatic group; Q1 represents a hydrogen atom, or an alkyl group.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: August 4, 2020
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama
  • 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
  • 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: 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
  • 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
  • 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
  • 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
  • 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: 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