Patents by Inventor Yu Naito

Yu Naito 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: 10113040
    Abstract: The polymer film comprises a carbonyl bond-containing polymer and a compound having ?h of equal to or higher than 11.0 and ?? of equal to or lower than 1.50, wherein the ?h is a value of hydrogen-bonding capacity calculated by Hoy method and the ?? is a value calculated by equation 1: ??=|x?13.3|??Equation 1 wherein, in equation 1, ? represents an interatomic distance in the polymer film between atoms most distant from each other among molecules in the compound, excluding a hydrogen atom, calculated by molecular dynamics calculation.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: October 30, 2018
    Assignee: FUJIFILM CORPORATION
    Inventors: Yasukazu Kuwayama, Nobutaka Fukagawa, Hiroshi Inada, Masaki Noro, Yoshitaka Maeda, Naozumi Shiraiwa, Yu Naito
  • Patent number: 10114160
    Abstract: A polarizing plate has at least a polarizer layer including a polyvinyl alcohol film dyed with iodine and includes a compound exhibiting a polyiodide ion I5? forming ability in an iodide compound-containing solution.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: October 30, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Mayumi Nojiri, Yu Naito, Nobutaka Fukagawa, Naoya Shimoju, Hiroyuki Ishikawa
  • Patent number: 10001584
    Abstract: An optical film is provided containing cellulose acylate and at least one type of a compound denoted by the following Formula (I). R1 represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, a heterocyclic group, an acyl group, an alkoxy carbonyl group, a carbamoyl group, an alkyl sulfonyl group, or an aryl sulfonyl group, R2 represents an alkyl group or an aryl group, L represents a single bond or a bivalent or more connecting group, and n represents 1 when L is a single bond and n represents an integer of the valence of L?1 when L is a bivalent or more connecting group. s and t each independently represent 1 to 3, and X represents —O— or —N(Ra)-. Ra represents a hydrogen atom or an alkyl group.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: June 19, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Hagio, Shinichi Ichikawa, Masaki Noro, Yu Naito, Nobutaka Fukagawa, Yutaka Nozoe
  • Publication number: 20180113391
    Abstract: A toner, where a diffraction peak of the toner as measured by X-ray diffraction spectroscopy is present at least in a region where 2? is from 20° through 25°, and a difference between Tg1 and Tg2 is 10° C. or less, where Tg1 is a glass transition temperature of the toner, as observed in a last heating step, when heating and cooling are performed on the toner by means of a differential scanning calorimeter (DSC) under the heating and cooling conditions 1 defined in the specification, and Tg2 is a glass transition temperature of the toner, as observed in a last heating step, when heating and cooling are performed on the toner by means of the differential scanning calorimeter (DSC) under the heating and cooling conditions 2 defined in the specification.
    Type: Application
    Filed: March 24, 2016
    Publication date: April 26, 2018
    Inventors: Yoshitaka YAMAUCHI, Kazumi SUZUKI, Hisashi NAKAJIMA, Saori YAMADA, Yu NAITO, Akihiro KANEKO
  • Publication number: 20170139337
    Abstract: A toner includes a binder resin; and a plate-shaped pigment having a silica coated layer on the surface, an average-particle diameter of from 10 ?m to 25 ?m, and an aspect ratio of from 20 to 125.
    Type: Application
    Filed: October 31, 2016
    Publication date: May 18, 2017
    Inventors: Akihiro KANEKO, Kazumi Suzuki, Yoshitaka Yamauchi, Yu Naito
  • Patent number: 9644083
    Abstract: A cellulose acylate film, containing: at least two or more of chelating agents having different pKa values from one another, wherein the chelating agents comprise: a chelating agent A having at least one functional group whose acid dissociation constant pKa, measured at 25° C. in a mixed solvent having a mixing ratio of tetrahydrofuran 60 ml/water 40 ml, is 6 or less; and a chelating agent B having at least one functional group of a conjugate acid whose pKa, measured at the same condition, is 7 or more; and a cellulose acylate, and wherein the number of bright spots of the cellulose acylate film is equal to or less than 500/cm2; a polarizing plate protective film, a polarizing plate and a liquid crystal display using the same.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: May 9, 2017
    Assignee: FUJIFILM CORPORATION
    Inventors: Nobutaka Fukagawa, Yu Naito, Mayumi Nojiri, Hiroyuki Hagio, Aiko Yoshida, Hideyuki Nishikawa
  • Patent number: 9618788
    Abstract: An optical film, containing a cellulose acylate, and at least one compound represented by any of formulas (I) to (III): wherein, in formulas (I) to (III), R1 and R2 each independently represent a halogen atom, an alkyl, cycloalkyl, alkenyl, aryl, hydroxy, hydroxyamino, amino, alkylamino, arylamino, alkoxy, aryloxy, alkylthio, or arylthio group (however, R1 and R2 do not represent an amino, alkylamino, or arylamino group at the same time); R3 to R6 each independently represent a hydrogen atom, an alkyl, cycloalkyl, alkenyl, aryl, acyl, alkyl- or aryl-sulfonyl, alkyl- or aryl-sulfinyl, carbamoyl, sulfamoyl, alkoxycarbonyl, or aryloxycarbonyl group; R7 represents an alkyl, cycloalkyl, alkenyl, aryl, alkylamino, arylamino, alkoxy, aryloxy, or heterocyclic group; R8 represents an alkyl, cycloalkyl, alkenyl, aryl, or heterocyclic group; and R1 to R8 each may be further substituted with a substituent; and a polarizing plate and a liquid crystal display.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 11, 2017
    Assignee: FUJIFILM CORPORATION
    Inventors: Yu Naito, Nobutaka Fukagawa, Aiko Yoshida, Hideyuki Nishikawa, Masaki Noro
  • Patent number: 9551813
    Abstract: An optical film including cellulose acylate and a compound represented by General Formula (I) described below, a polarizing plate, and a liquid crystal display device; R1 and R3 represent hydrogen atoms, alkyl groups having 1 to 20 carbon atoms, cycloalkyl groups having 3 to 20 carbon atoms, alkenyl groups having 2 to 20 carbon atoms, or aromatic groups having 6 to 20 carbon atoms. R5 represents a hydrogen atom, an unsubstituted alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, or an aralkyl group represented by -L5-Ar5 (L5 represents an alkylene group having 1 to 20 carbon atoms and Ar5 represents an aromatic group having 6 to 20 carbon atoms). Here, the total of ring structures present in R1, R3, and R5 is one or two.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: January 24, 2017
    Assignee: FUJIFILM CORPORATION
    Inventors: Aiko Yoshida, Yutaka Nozoe, Yoshinori Kanazawa, Yasukazu Kuwayama, Yu Naito
  • Publication number: 20160370523
    Abstract: A polarizing plate composition, a polarizing plate protective film, a polarizer, a polarizing plate, and a liquid crystal display device contain a compound represented by the following Formula (I). In Formula (I), R represents a specific substituent, and each of EWG1 and EWG2 represents an electron-withdrawing group. EWG1 and EWG2 may form a ring by being bonded to each other. Here, there is no such case where EWG1 and EWG2 become the following group by being bonded to each other and form a ring by being bonded to a carbon atom substituted with R. Each of Rx and Ry represents a hydrogen atom or a substituent. * represents a position of bonding to a carbon atom substituted with R.
    Type: Application
    Filed: September 1, 2016
    Publication date: December 22, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Naoya SHIMOJU, Aiko YOSHIDA, Mayumi NOJIRI, Yu NAITO
  • Patent number: 9507067
    Abstract: A polarizing plate includes at least: a polarizer layer containing a polyvinyl alcohol-based film dyed with iodine; and one or more other layers except for the polarizer layer, in which the polarizer layer contains a compound which has polyiodide ion I5? reduction capability in iodide compound- and iodine-containing solutions, and at least one of the one or more other layers contain a compound which has polyiodide ion I5? formation capability in an iodide compound-containing solution.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: November 29, 2016
    Assignee: FUJIFILM CORPORATION
    Inventors: Mayumi Nojiri, Nobutaka Fukagawa, Yu Naito, Naoya Shimoju, Aiko Yoshida
  • Publication number: 20160341860
    Abstract: A polarizing plate has at least a polarizer layer including a polyvinyl alcohol film dyed with iodine and includes a compound exhibiting a polyiodide ion I5? forming ability in an iodide compound-containing solution.
    Type: Application
    Filed: August 2, 2016
    Publication date: November 24, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Mayumi NOJIRI, Yu NAITO, Nobutaka FUKAGAWA, Naoya SHIMOJU, Hiroyuki ISHIKAWA
  • Publication number: 20160327884
    Abstract: A toner for electrophotography, which contains a binder resin, and a release agent, wherein a maximum value of loss tangent of the toner at 95° C. to 115° C. is 8 or greater, as a viscoelasticity of the toner is measured, where the loss tangent is represented by the following formula: Loss tangent (tan ?)=loss elastic modulus (G?)/storage elastic modulus (G?).
    Type: Application
    Filed: January 6, 2015
    Publication date: November 10, 2016
    Inventors: Hisashi NAKAJIMA, Kazumi SUZUKI, Masashi NAGAYAMA, Saori YAMADA, Yoshitaka YAMAUCHI, Yu NAITO, Yoshitaka SEKIGUCHI
  • Patent number: 9482971
    Abstract: A white toner has a first temperature range not less than 25° C. in which 60° glossiness is 10 or less between a fixable minimum temperature and a fixable maximum temperature thereof. The white toner has a second temperature range not less than 25° C. in which 60° glossiness is from 30 to 60 therebetween.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: November 1, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazumi Suzuki, Hisashi Nakajima, Masashi Nagayama, Saori Yamada, Yoshitaka Yamauchi, Yu Naito
  • Patent number: 9447261
    Abstract: To provide a cellulose acylate film having low moisture permeability and low haze, a polarizing plate, and a liquid crystal display device using the same. A cellulose acylate film comprising at least a cellulose acylate, and a compound represented by the formula (1) below: in the formula (1), R1 represents a hydrogen atom or substituent, R2 represents a substituent represented by the formula (2) below; n1 represents an integer of 0 to 4, when n1 is 2 or larger, the plurality of (R1)s may be same with or different from each other; n2 represents an integer of 1 to 5, when n2 is 2 or larger, the plurality of (R2)s may be same with or different from each other.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: September 20, 2016
    Assignee: FUJIFILM CORPORATION
    Inventors: Akio Tamura, Yu Naito, Yutaka Nozoe
  • Publication number: 20160187537
    Abstract: An optical film is provided containing cellulose acylate and at least one type of a compound denoted by the following Formula (I). R1 represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, a heterocyclic group, an acyl group, an alkoxy carbonyl group, a carbamoyl group, an alkyl sulfonyl group, or an aryl sulfonyl group, R2 represents an alkyl group or an aryl group, L represents a single bond or a bivalent or more connecting group, and n represents 1 when L is a single bond and n represents an integer of the valence of L?1 when L is a bivalent or more connecting group. s and t each independently represent 1 to 3, and X represents —O— or —N(Ra)-. Ra represents a hydrogen atom or an alkyl group.
    Type: Application
    Filed: January 28, 2016
    Publication date: June 30, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Hiroyuki HAGIO, Shinichi ICHIKAWA, Masaki NORO, Yu NAITO, Nobutaka FUKAGAWA, Yutaka NOZOE
  • Patent number: 9341882
    Abstract: Provided is a polarizing plate having improved single plate transmittance under high-temperature and high-humidity conditions, and a liquid crystal display device using the same. A laminate including a polarizer, and an adhesive layer adjoining to at least one surface of the polarizer, the adhesive layer containing a resin and a compound, etc. represented by the formula (1) below.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: May 17, 2016
    Assignee: FUJIFILM CORPORATION
    Inventors: Mayumi Nojiri, Takahiro Ohno, Nobutaka Fukagawa, Yu Naito, Hiroyuki Ishikawa, Naoya Shimoju
  • Publication number: 20160122516
    Abstract: The inventions are an optical film containing cellulose acylate and a compound having a structure denoted by General Formula (A) described below, and a polarizing plate and a liquid crystal display device employing the optical film. L represents n-valent connecting group, n represents an integer of greater than or equal to 2, and A represents a heterocyclic group denoted by General Formula (I). R1, R3, and R5 represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aryl group, or a heteroaryl group. Here, any one of R1, R3, and R5 is bonded to L.
    Type: Application
    Filed: January 8, 2016
    Publication date: May 5, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Masaki NORO, Yutaka NOZOE, Hiroshi INADA, Naoya SHIMOJU, Aiko YOSHIDA, Yu NAITO, Yasukazu KUWAYAMA
  • Publication number: 20160124123
    Abstract: A cellulose acylate film, containing at least: a cellulose acylate; and a compound represented by the following Formula (I): wherein R1, R3 and R5 each independently designate a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, or an aromatic group, which groups may have a further substituent; with the proviso that at least one of R1, R3 and R5 is an alkyl group substituted with a group having a ring structure or a cycloalkyl group, and the total number of the ring structures existing in R1, R3 and R5 is 3 or more.
    Type: Application
    Filed: January 8, 2016
    Publication date: May 5, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Masaki NORO, Yutaka NOZOE, Hiroshi INADA, Naoya SHIMOJU, Hisato NAGASE, Hiroyuki HAGIO, Yu NAITO, Nobutaka FUKAGAWA
  • Publication number: 20160060405
    Abstract: The polymer film comprises a carbonyl bond-containing polymer and a compound having ?h of equal to or higher than 11.0 and ?? of equal to or lower than 1.50, wherein the ?h is a value of hydrogen-bonding capacity calculated by Hoy method and the ?? is a value calculated by equation 1: ??=|x?13.3|??Equation 1 wherein, in equation 1, ? represents an interatomic distance in the polymer film between atoms most distant from each other among molecules in the compound, excluding a hydrogen atom, calculated by molecular dynamics calculation.
    Type: Application
    Filed: September 2, 2015
    Publication date: March 3, 2016
    Applicant: FUJIFILM CORPORATION
    Inventors: Yasukazu KUWAYAMA, Nobutaka FUKAGAWA, Hiroshi INADA, Masaki NORO, Yoshitaka MAEDA, Naozumi SHIRAIWA, Yu NAITO
  • Patent number: 9256099
    Abstract: Provided is a polarizer durable against high-temperature and high-humidity conditions, small in changes in the single plate transmittance, and a liquid crystal display device. A polarizer including a polyvinyl alcohol-based resin, a dichroic colorant, and a compound, etc. represented by the formula (1) below, the content of the compound represented by the formula (1) being 0.01 to 30 parts by mass relative to 100 parts by mass of the polyvinyl alcohol-based resin. In the formula (1) , each of R1 and R3 independently represents a hydrogen atom, C1-20 straight-chain alkyl group, C3-20 branched alkyl group, C3-20 cycloalkyl group, C2-20 alkenyl group or C6-20 aromatic group, and R5 represents a substituent.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: February 9, 2016
    Assignee: FUJIFILM CORPORATION
    Inventors: Mayumi Nojiri, Takahiro Ohno, Nobutaka Fukagawa, Yu Naito, Hiroyuki Ishikawa, Naoya Shimoju