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: 11358884
    Abstract: A water treatment apparatus includes: a treatment tank, having therein a grounded electrode and a high-voltage electrode opposing the grounded electrode, for generating electric discharge between both the electrodes, and causing to-be-treated water to pass between the electrodes and contact with the electric discharge to perform water treatment, an ozone mixing portion for supplying ozone-containing gas in the treatment tank through a gas sending portion to the to-be-treated water supplied from outside, and a gas returning portion for sending gas in the ozone mixing portion to the treatment tank, are provided, and water treatment is performed by ozone in the ozone mixing portion, and water treatment is thereafter performed by the electric discharge in the treatment tank.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: June 14, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yu Kamiya, Gaku Oinuma, Teruki Naito, Yasutaka Inanaga
  • Patent number: 11061344
    Abstract: Provided is a toner including a binder resin and a colorant, wherein the colorant includes Solvent Red 49, and an acid value of the toner is 9.0 mgKOH/g or greater but 30.0 mgKOH/g or less.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: July 13, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Toyoshi Sawada, Kazumi Suzuki, Natsuko Matsushita, Yu Naito
  • Publication number: 20210026199
    Abstract: Provided is a colorant filter including at least one colorant; and at least one binder, in which the colorant filter has an absorption spectrum having an absorption maximum in a wavelength region of 560 nm to 620 nm, and in the absorption spectrum, a difference D1 between two wavelengths which give 10% absorbance with respect to an absorbance at the absorption maximum and a difference D2 between two wavelengths which give 50% absorbance with respect to the absorbance at the absorption maximum satisfy Expressions (a) D1?90 nm and (b) D1/D2?4.0.
    Type: Application
    Filed: October 6, 2020
    Publication date: January 28, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Nobutaka FUKAGAWA, Yu NAITO, Daisuke SASAKI
  • Publication number: 20210018855
    Abstract: Provided is a toner including a binder resin and a colorant, wherein the colorant includes Solvent Red 49, and an acid value of the toner is 9.0 mgKOH/g or greater but 30.0 mgKOH/g or less.
    Type: Application
    Filed: April 6, 2018
    Publication date: January 21, 2021
    Inventors: Toyoshi SAWADA, Kazumi SUZUKI, Natsuko MATSUSHITA, Yu NAITO
  • Publication number: 20210005673
    Abstract: There are provided a color correction filter for a white organic electroluminescent light source including a resin and 0.1 part by mass or more of a coloring agent having an absorption maximum wavelength in a range of 560 to 620 nm or 460 to 520 nm with respect to 100 parts by mass of the resin, and having a moisture content of 0.5% by mass or less, and an organic EL display device having this filter.
    Type: Application
    Filed: September 18, 2020
    Publication date: January 7, 2021
    Applicant: FUJIFILM Corporation
    Inventors: Yu NAITO, Nobutaka FUKAGAWA, Daisuke SASAKI, Hiroki KUWAHARA
  • Publication number: 20200385558
    Abstract: Provided are a resin composition including a compound represented by Formula (1) and a resin, an optical filter including the resin composition, a liquid crystal display device and a solid-state imaging element including the optical filter, and a compound suitable as a light absorbing component of the resin composition. In Formula (1), Dye represents a colorant structural part obtained by removing n1 hydrogen atoms from a squarylium compound having a specific structure, Q1 is a structural part including a metallocene structure, and n1 represents an integer of 1 to 6.
    Type: Application
    Filed: August 25, 2020
    Publication date: December 10, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Daisuke SASAKI, Hidetomo FURUYAMA, Akihiro HARA, Hiroki KUWAHARA, Yu NAITO, Nobutaka FUKAGAWA
  • Publication number: 20200369890
    Abstract: Provided are a resin composition including a compound represented by Formula (1) and a resin, a film and a filter including the resin composition, a liquid crystal display device and a solid-state imaging element including the filter, and a compound suitable as a light absorbing component of the resin composition and the filter. In Formula (1), Dye represents a colorant structural part obtained by removing n1 hydrogen atoms from a squarylium compound having a specific structure. Q1 is a structural part in which energy levels of a highest occupied molecular orbital and a lowest unoccupied molecular orbital satisfy a specific condition. L1 represents a divalent linking group and n1 represents an integer of 1 to 4.
    Type: Application
    Filed: August 13, 2020
    Publication date: November 26, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Daisuke SASAKI, Akihiro HARA, Kunihiko KODAMA, Nobutaka FUKAGAWA, Yu NAITO, Hiroki KUWAHARA
  • Publication number: 20200217993
    Abstract: Provided are a polarizing plate protective film including a resin and a coloring agent having an absorption maximum wavelength in a range of 560 to 620 nm or 460 to 520 nm in an amount of 0.1 parts by mass or more with respect to 100 parts by mass of the resin, in which a film thickness is 1 to 18 ?m, and a moisture content is 0.5% by mass or less, a polarizing plate in which the protective film is used, and a liquid crystal display device in which the polarizing plate is used.
    Type: Application
    Filed: March 18, 2020
    Publication date: July 9, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Nobutaka FUKAGAWA, Yu NAITO, Hiroki KUWAHARA, Daisuke SASAKI, Hidetomo FURUYAMA, Natsuru CHIKUSHI
  • Patent number: 10620557
    Abstract: A toner comprising a binder resin and a near-infrared light absorbing material is provided. The toner in the form of a pellet has: a chroma C* of 20 or less in the L*C*h color space; a hue angle h of from 50 to 90 degrees in the L*C*h color space; and a spectral reflectance of 5% or less at a wavelength of from 800 to 900 nm.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: April 14, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Toyoshi Sawada, Kazumi Suzuki, Yu Naito, Akihiro Kaneko
  • Patent number: 10578988
    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: Grant
    Filed: March 24, 2016
    Date of Patent: March 3, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshitaka Yamauchi, Kazumi Suzuki, Hisashi Nakajima, Saori Yamada, Yu Naito, Akihiro Kaneko
  • Patent number: 10564571
    Abstract: A toner set for use in an image forming apparatus is provided. The toner set includes a fluorescent toner and a color toner. The fluorescent toner comprises a binder resin and a fluorescent agent. The color toner comprises a binder resin and a colorant. A 60-degree gloss value (Gf) of a solid image of the fluorescent toner is in a range of from 10 to 25, and a difference (Gn?Gf) between a 60-degree gloss value (Gn) of a solid image of the color toner and the 60-degree gloss value (Gf) of the solid image of the fluorescent toner is in a range of from 10 to 28.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: February 18, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazumi Suzuki, Toyoshi Sawada, Yu Naito, Natsuko Matsushita
  • Publication number: 20200033745
    Abstract: A toner comprising a binder resin and a near-infrared light absorbing material is provided. The toner in the form of a pellet has: a chroma C* of 20 or less in the L*C*h color space; a hue angle h of from 50 to 90 degrees in the L*C*h color space; and a spectral reflectance of 5% or less at a wavelength of from 800 to 900 nm.
    Type: Application
    Filed: July 18, 2019
    Publication date: January 30, 2020
    Inventors: Toyoshi SAWADA, Kazumi SUZUKI, Yu NAITO, Akihiro KANEKO
  • Patent number: 10459290
    Abstract: A film of 15 to 45 ?m thick containing a cellulose acylate and an aromatic ester oligomer having a repeating unit derived from a dicarboxylic acid and a repeating unit derived from a diol, in which the repeating unit derived from a dicarboxylic acid has a ratio m/n of from 0/10 to 3/7, m and n represent a molar proportion of a repeating unit derived from an aliphatic dicarboxylic acid and an aromatic dicarboxylic acid, respectively, and the film satisfies |Rth(590)|?50 nm; has a good appearance and is free of deterioration in display performance when the film with a thin thickness is produced in the form of a roll, achieves a high pencil hardness by imparting a high Knoop hardness to the film, even with a hard coat layer provided, and is free of display unevenness on installing the film in a liquid crystal display device.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: October 29, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Yoshiaki Hisakado, Masato Nagura, Yu Naito, Rikio Inoue, Yutaka Adegawa
  • Patent number: 10451987
    Abstract: A toner includes a europium complex represented by the following Chemical formula where A represents 2-naphthyl group, 2-naphthyl group having a substitution group selected from the group consisting of an alkyl group, an alkoxy group, and a halogen, R represents a fluoroalkyl group having one to three carbon atoms or a methyl group, and R1, R2, R3, and R4 each, independently represent hydrogen atoms, alkyl groups, or aryl groups, wherein the toner has a hydroxyl value of from 20 to 40 mgKOH/g.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: October 22, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Toyoshi Sawada, Kazumi Suzuki, Yu Naito
  • Publication number: 20190196349
    Abstract: A toner includes a europium complex represented by the following Chemical formula where A represents 2-naphthyl group, 2-naphthyl group having a substitution group selected from the group consisting of an alkyl group, an alkoxy group, and a halogen, R represents a fluoroalkyl group having one to three carbon atoms or a methyl group, and R1, R2, R3, and R4 each, independently represent hydrogen atoms, alkyl groups, or aryl groups, wherein the toner has a hydroxyl value of from 20 to 40 mgKOH/g.
    Type: Application
    Filed: December 5, 2018
    Publication date: June 27, 2019
    Inventors: Toyoshi SAWADA, Kazumi SUZUKI, Yu NAITO
  • Patent number: 10274856
    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: Grant
    Filed: January 6, 2015
    Date of Patent: April 30, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Hisashi Nakajima, Kazumi Suzuki, Masashi Nagayama, Saori Yamada, Yoshitaka Yamauchi, Yu Naito, Yoshitaka Sekiguchi
  • Patent number: 10254456
    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: Grant
    Filed: September 1, 2016
    Date of Patent: April 9, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Naoya Shimoju, Aiko Yoshida, Mayumi Nojiri, Yu Naito
  • Publication number: 20190086834
    Abstract: A toner set for use in an image forming apparatus is provided. The toner set includes a fluorescent toner and a color toner. The fluorescent toner comprises a binder resin and a fluorescent agent. The color toner comprises a binder resin and a colorant. A 60-degree gloss value (Gf) of a solid image of the fluorescent toner is in a range of from 10 to 25, and a difference (Gn?Gf) between a 60-degree gloss value (Gn) of a solid image of the color toner and the 60-degree gloss value (Gf) of the solid image of the fluorescent toner is in a range of from 10 to 28.
    Type: Application
    Filed: September 18, 2018
    Publication date: March 21, 2019
    Inventors: Kazumi SUZUKI, Toyoshi Sawada, Yu Naito, Natsuko Matsushita
  • Patent number: 10203620
    Abstract: Toner contains a binder resin, a releasing agent, and a tri- or higher metal salt, wherein the toner has a weight average molecular weight (Mw) of from 7,000 to 10,000, a ratio of the weight average molecular weight (Mw) to a number average molecular weight (Mn) of 5 or less, and an acid value of from 6 mgKOH/g to 12 mgKOH/g, wherein the binder resin is a polyester resin, wherein the releasing agent is a monoester wax.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: February 12, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Yu Naito, Kazumi Suzuki, Yoshitaka Yamauchi, Masashi Nagayama, Hisashi Nakajima, Saori Yamada
  • Patent number: 10160846
    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: Grant
    Filed: January 8, 2016
    Date of Patent: December 25, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Masaki Noro, Yutaka Nozoe, Hiroshi Inada, Naoya Shimoju, Aiko Yoshida, Yu Naito, Yasukazu Kuwayama