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: 9150677
    Abstract: The invention is a polymerizable compound represented by formula (I); a polymerizable composition comprising the polymerizable compound and an initiator; a polymer obtained by polymerizing the polymerizable compound or the polymerizable composition, and an optically anisotropic article comprising the polymer. In the formula, Q1 to Q3 are a hydrogen atom, and the like; X is a C4-12 divalent aromatic group, and the like; Y1 to Y12 are a chemical single bond, —O—, —O—C(?O)—, —C(?O)—O—, and the like; G1 to G4 are a C1-20 divalent aliphatic group, and the like; Z1 to Z4 are a C2-10 alkenyl group, and the like; A1 is a trivalent aromatic group, and the like; A2 to A7 are a C4-30 divalent aromatic group, and the like; and n is 0 or 1.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: October 6, 2015
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama
  • Publication number: 20150274647
    Abstract: The present invention relates to: a polymerizable compound represented by a formula (I); a polymerizable composition comprising the polymerizable compound and an initiator; a polymer obtained by polymerizing the polymerizable compound or the polymerizable composition; and an optically anisotropic article comprising the polymer [in the formula, Y1 to Y8 are a chemical single bond, —O—, —O—C(?O)—, —C(?O)—O—, or the like; G1 and G2 are a divalent aliphatic group having 1 to 20 carbon atoms, or the like; Z1 and Z2 are an alkenyl group having 2 to 10 carbon atoms, or the like; A1 is a tetravalent aromatic group, or the like; A2 and A3 are a divalent alicyclic hydrocarbon group having 3 to 30 carbon atoms, or the like; A4 and A5 are a divalent aromatic group having 4 to 30 carbon atoms, or the like; Ax1 and Ax2 are an organic group having 2 to 30 carbon atoms that includes an aromatic ring, or the like; Ay1 and Ay2 are a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or the like; Q1 and Q2 are a hydrogen
    Type: Application
    Filed: October 16, 2013
    Publication date: October 1, 2015
    Applicant: ZEON CORPORATION
    Inventors: Kei Sakamoto, Satoshi Kiriki, Kumi Okuyama
  • Publication number: 20150274872
    Abstract: The present invention pertains to: a polymerizable compound represented by a formula (I); a polymerizable composition comprising the polymerizable compound and an initiator; a polymer obtained by polymerizing the polymerizable compound or the polymerizable composition; and an optically anisotropic article comprising the polymer. The present invention provides a polymerizable compound, a polymerizable composition, and a polymer that have a practical low melting point, exhibit excellent solubility in a general-purpose solvent, can be produced at low cost, and can produce an optical film that achieves uniform conversion of polarized light over a wide wavelength band, and also provide an optically anisotropic article. [In the formula: Y1 to Y8 are a chemical single bond, —O—, —O—C(?O)—, —O—C(?O)—O—, etc.; G1 and G2 are a divalent aliphatic group having 1 to 20 carbon atoms, etc.; Z1 and Z2 are an alkenyl group having 2 to 10 carbon atoms that is substituted with a halogen atom, or unsubstituted, etc.
    Type: Application
    Filed: October 16, 2013
    Publication date: October 1, 2015
    Applicant: ZEON CORPORATION
    Inventors: Kei Sakamoto, Satoshi Kiriki, Kumi Okuyama
  • Publication number: 20150183902
    Abstract: The present invention relates to: a polymerizable compound (I), wherein Y1 to Y6 are a chemical single bond, —O—C(?O)—, —C(?O)—O— or the like, G1 and G2 are a divalent aliphatic group, Z1 and Z2 are an alkenyl group, Ax is a fused ring group represented by a formula (II), wherein X is —NR3—, an oxygen atom, a sulfur atom or the like, R3 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and D is a substituted or unsubstituted ring having 1 to 20 carbon atoms that includes at least one nitrogen atom, Ay is a hydrogen atom, an alkyl group, A1 is a trivalent aromatic group or the like, A2 and A3 are a divalent aromatic group having 6 to 30 carbon atoms or the like, and Q1 is a hydrogen atom, or an alkyl group having 1 to 6 carbon atoms.
    Type: Application
    Filed: May 30, 2013
    Publication date: July 2, 2015
    Inventors: Kei Sakamoto, Kumi Okuyama
  • Publication number: 20150175564
    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. A carbonyl compound is useful as a raw material for producing the polymerizable compound. (In the formula (I), Y1 to Y8 represent —C(?O)—O—, G1 and G2 represent a C1-20 divalent linear aliphatic group, Z1 and Z2 represent a C2-10 alkenyl group that is unsubstituted, or substituted with a halogen atom, Ax represents a C2-30 organic group with at least one aromatic ring, Ay represents a hydrogen atom or C1-20 alkyl group, A1 represents a trivalent aromatic group, A2 and A3 represent a C3-30 divalent alicyclic hydrocarbon group, A4 and A5 represent a C6-30 divalent aromatic group or the like, and Q1 represents a hydrogen atom.
    Type: Application
    Filed: May 30, 2013
    Publication date: June 25, 2015
    Inventors: Kei Sakamoto, Satoshi Kiriki, Kumi Okuyama, Kanako Taira
  • Patent number: 9029490
    Abstract: The present invention provides a polymerizable compound represented by the following formula (I), a polymerizable composition that includes the polymerizable compound and an initiator, a polymer obtained by polymerizing the polymerizable compound or the polymerizable composition, and an optically anisotropic article that includes the polymer. The polymerizable compound, polymerizable composition, and polymer have a practical low melting point, exhibit an excellent solubility in a general-purpose solvent, can be produced at low cost, and may produce an optical film that achieves uniform conversion of polarized light over a wide wavelength band, and an optically anisotropic article.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: May 12, 2015
    Assignee: Zeon Corporation
    Inventors: Kei Sakamoto, Kumi Okuyama
  • Patent number: 8883271
    Abstract: The present invention is to provide a novel polymerizable chiral compound (chiral agent) having high left-handed helical twisting power, a polymerizable liquid crystal composition comprising the polymerizable chiral compound and a polymerizable liquid crystal compound, a liquid crystal polymer, and an optically anisotropic body.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: November 11, 2014
    Assignee: Zeon Corporation
    Inventors: Kei Sakamoto, Kentaro Tamura, Kumi Okuyama
  • Publication number: 20140309396
    Abstract: The invention is a polymerizable compound represented by formula (I); a polymerizable composition comprising the polymerizable compound and an initiator; a polymer obtained by polymerizing the polymerizable compound or the polymerizable composition, and an optically anisotropic article comprising the polymer. In the formula, Q1 to Q3 are a hydrogen atom, and the like; X is a C4-12 divalent aromatic group, and the like; Y1 to Y12 are a chemical single bond, —O—, —O—C(?O)—, —C(?O)—O—, and the like; G1 to G4 are a C1-20 divalent aliphatic group, and the like; Z1 to Z4 are a C2-10 alkenyl group, and the like; A1 is a trivalent aromatic group, and the like; A2 to A7 are a C4-30 divalent aromatic group, and the like; and n is 0 or 1.
    Type: Application
    Filed: June 14, 2012
    Publication date: October 16, 2014
    Applicant: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama
  • Publication number: 20140235857
    Abstract: The present invention pertains to a compound represented by a formula (I) and a method for producing thereof (in the formula, Ax is an organic group having 2 to 30 carbon atoms that includes at least one aromatic ring selected from a group consisting of an aromatic hydrocarbon ring and an aromatic hetero ring, Ay is a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group, an alkenyl group having 2 to 18 carbon atoms, an organic group having 2 to 30 carbon atoms that includes at least one aromatic ring selected from a group consisting of an aromatic hydrocarbon ring and an aromatic hetero ring, or the like. Ax and Ay optionally bond to each other to form a ring, and Q is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or the like.).
    Type: Application
    Filed: April 27, 2012
    Publication date: August 21, 2014
    Applicant: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama, Yasushi Nakano
  • Publication number: 20140200320
    Abstract: The present invention provides a polymerizable compound represented by the following formula (I), a polymerizable composition that includes the polymerizable compound and an initiator, a polymer obtained by polymerizing the polymerizable compound or the polymerizable composition, and an optically anisotropic article that includes the polymer. The invention makes it possible to provide a polymerizable compound, a polymerizable composition, and a polymer that have a practical low melting point, exhibit an excellent solubility in a general-purpose solvent, can be produced at low cost, and may produce an optical film that achieves uniform conversion of polarized light over a wide wavelength band, and an optically anisotropic article.
    Type: Application
    Filed: May 31, 2012
    Publication date: July 17, 2014
    Applicant: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama
  • Publication number: 20140142266
    Abstract: The present invention relates to a polymerizable compound represented by a formula (I). The present invention provides a polymerizable compound, a polymerizable composition, a polymer, and an optically anisotropic article that are capable of obtaining an optical film having a low melting point, having excellent solubility, capable of being manufactured at low cost, and capable of uniform polarized light conversion across a broad wavelength region. [In formula: Y1 to Y6 are independently a chemical single bond, —O—, —O—C(?O)—, —C(?O)—O— etc.; G1 and G2 are independently a divalent C1-C20 aliphatic group etc.; Z1 and Z2 are independently C2-C10 alkenyl group that is substituted with a halogen atom etc.; Ax is a C2-C30 organic group that includes at least one aromatic ring selected from a group consisting of an aromatic hydrocarbon ring and an aromatic hetero ring; Ay is a hydrogen atom, a C1-C20 alkyl group, a C2-C20 alkenyl group, a C3-C12 cycloalkyl group etc.; A1 is a trivalent aromatic group etc.
    Type: Application
    Filed: April 27, 2012
    Publication date: May 22, 2014
    Applicant: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama
  • Publication number: 20140107247
    Abstract: The invention provides a polymerizable compound represented by formula (I), a polymerizable composition, and a polymer that have a practical low melting point, can be produced at low cost, and can produce an optical film that achieves uniform conversion of polarized light over a wide wavelength band, and an optically anisotropic article.
    Type: Application
    Filed: April 12, 2012
    Publication date: April 17, 2014
    Applicant: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama
  • Publication number: 20130130102
    Abstract: An ether compound represented by the following formula and its use: wherein n represents 0 or 1, m represents an integer of 0 to 2, Y represents —O—, —S—, —C(?O)—O—, and —O—C(?O)—, X1 and X2 represent a hydrogen atom or a fluorine atom, and R represents an aliphatic hydrocarbon group having 1 to 20 carbon atoms and substituted with one or more fluorine atoms, with a proviso that, when m is 0, R has 3 to 20 carbon atoms. R may have in the bond thereof intervening oxygen atom, sulfur atom, and carbonyl group.
    Type: Application
    Filed: July 22, 2011
    Publication date: May 23, 2013
    Applicant: ZEON CORPORATION
    Inventors: Kei Sakamoto, Natsuko Nakata, Kumi Okuyama
  • Publication number: 20130023637
    Abstract: The present invention is to provide a novel polymerizable chiral compound (chiral agent) having high left-handed helical twisting power, a polymerizable liquid crystal composition comprising the polymerizable chiral compound and a polymerizable liquid crystal compound, a liquid crystal polymer, and an optically anisotropic body.
    Type: Application
    Filed: March 10, 2011
    Publication date: January 24, 2013
    Applicant: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kentaro Tamura, Kumi Okuyama