Patents by Inventor Katsuyuki Kito

Katsuyuki Kito 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: 11925464
    Abstract: An evaluation apparatus includes: a display screen; a gaze point detecting unit that detects a position of a gaze point of a subject observing the display screen; a display control unit that causes the display screen to display an image including a specific object and a comparison object different from the specific object; an area setting unit that sets a specific area corresponding to the specific object and a comparison area corresponding to the comparison object; a determining unit that, based on the position of the gaze point, determines whether the gaze point is present in the specific area and the comparison area during a period in which the image is displayed; a calculating unit that calculates gaze point data based on the determination result of the determining unit; and an evaluating unit that obtains evaluation data of the subject based on the gaze point data.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: March 12, 2024
    Assignee: JVCKENWOOD Corporation
    Inventors: Katsuyuki Shudo, Makoto Kito
  • Patent number: 11713366
    Abstract: The present invention provides a resin composition for a model material, for obtaining an optically shaped article that has flexibility and does not crack even when it is bent, and a method for manufacturing optically shaped articles that are shaped using the resin composition for a model material. The present invention relates to a resin composition for a model material, comprising, based on 100 parts by weight of a whole resin composition, 20 to 90 parts by weight of a (meth)acrylate monomer represented by the following formula (1) and/or a (meth)acrylate monomer represented by the following formula (2) as a monofunctional monomer (A), and 5 parts by weight or more of a polyfunctional oligomer as an oligomer (B), and further comprises no or 15 parts by weight or less, based on 100 parts by weight of the whole resin composition, of polyfunctional monomer (C), wherein R1, R2 and R3 each independently represent a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: August 1, 2023
    Assignee: MAXELL, LTD.
    Inventors: Katsuyuki Kito, Taeko Izumo, Masakatsu Okawa, Kenta Hongo
  • Publication number: 20230174806
    Abstract: The present invention provides a model material clear composition to be used in a material-jet optical shaping process, comprising an ethylenically unsaturated compound (A) and a photopolymerization initiator, wherein the ethylenically unsaturated compound (A) comprises: an ethylenically unsaturated monomer (A1) having a dicyclopentenyl group and/or a dicyclopentanyl group; an ethylenically unsaturated compound (A2) having an aliphatic cyclic structure in a molecule and having a urethane group; and an ethylenically unsaturated monomer (A3) having an aliphatic cyclic structure in a molecule and having neither a urethane group nor an amide group (excluding the ethylenically unsaturated monomer (A1)), and wherein a total mass of the ethylenically unsaturated monomer (A1), the ethylenically unsaturated compound (A2), and the ethylenically unsaturated monomer (A3) is 60% by mass or more based on the total mass of the ethylenically unsaturated compound (A).
    Type: Application
    Filed: March 10, 2021
    Publication date: June 8, 2023
    Inventors: Katsuyuki KITO, Hiroshi OTA, Hiroki SAKATA
  • Patent number: 11491776
    Abstract: A composition for model materials (4a) is used for shaping an optically shaped article by an inkjet optical shaping method, comprises a monofunctional monomer (A) and an oligomer (B) as a photocurable component, further, comprises no polyfunctional monomer (C) as a photocurable component, or comprises a polyfunctional monomer (C) as a photocurable component at 3.0 parts by weight based on 100 parts by weight of a whole composition for model materials, the oligomer (B) has a hydroxyl group or an amino group, and a total molar fraction of the hydroxyl group and the amino group in a total amount of the photocurable components is less than 5.0%. The composition for model materials (4a) can afford an optically shaped article that has flexibility, and does not crack even when it is bent.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: November 8, 2022
    Assignees: MAXELL, LTD., MIMAKI ENGINEERING CO., LTD.
    Inventors: Katsuyuki Kito, Taeko Izumo, Masakatsu Okawa, Kenta Hongo
  • Publication number: 20220281157
    Abstract: The present invention relates to a resin composition for optical shaping, comprising a polymerizable compound, wherein the polymerizable compound comprises: at least one polyfunctional ethylenically unsaturated monomer (B) having a ring structure other than an isocyanurate ring structure; and at least one polyfunctional ethylenically unsaturated monomer (C) having an isocyanurate ring structure, and a content of the monomer (C) is 5 to 80 parts by mass based on 100 parts by mass of the resin composition for optical shaping, and a content of a monofunctional ethylenically unsaturated monomer (A) is less than 70 parts by mass based on 100 parts by mass of the resin composition for optical shaping.
    Type: Application
    Filed: September 10, 2020
    Publication date: September 8, 2022
    Inventors: Hiroshi OTA, Katsuyuki KITO
  • Publication number: 20200407581
    Abstract: In an optical shaping ink set, a composition for model material contains a monofunctional ethylenically unsaturated monomer (A) at 50 to 90 parts by weight, a polyfunctional ethylenically unsaturated monomer (B) which does not contain a urethane group at 3 to 25 parts by weight, a urethane group-containing ethylenically unsaturated monomer (C) at 5 to 35 parts by weight, and a photopolymerization initiator (D) at 0.1 to 10 parts by weight, and the composition for support material contains a water-soluble monofunctional ethylenically unsaturated monomer (a) at 20 to 50 parts by weight, a polyalkylene glycol (b) containing EO and/or PO at 20 to 49 parts by weight, a water-soluble organic solvent (c) at 35 parts by weight or less, and a photopolymerization initiator (d).
    Type: Application
    Filed: January 31, 2018
    Publication date: December 31, 2020
    Inventors: Katsuyuki KITO, Taeko IZUMO
  • Publication number: 20200291161
    Abstract: A composition for model materials (4a) is used for shaping an optically shaped article by an inkjet optical shaping method, comprises a monofunctional monomer (A) and an oligomer (B) as a photocurable component, further, comprises no polyfunctional monomer (C) as a photocurable component, or comprises a polyfunctional monomer (C) as a photocurable component at 3.0 parts by weight based on 100 parts by weight of a whole composition for model materials, the oligomer (B) has a hydroxyl group or an amino group, and a total molar fraction of the hydroxyl group and the amino group in a total amount of the photocurable components is less than 5.0%. The composition for model materials (4a) can afford an optically shaped article that has flexibility, and does not crack even when it is bent.
    Type: Application
    Filed: February 28, 2017
    Publication date: September 17, 2020
    Applicants: Maxell Holdings, Ltd., MIMAKI ENGINEERING CO., LTD., MIMAKI ENGINEERING CO., LTD.
    Inventors: Katsuyuki KITO, Taeko IZUMO, Masakatsu OKAWA, Kenta HONGO
  • Patent number: 10676631
    Abstract: There is provided an ink set for ink-jet printing comprising an aqueous ink and a reaction liquid, wherein the aqueous ink contains an emulsion, a surfactant, an organic solvent, a pigment, and water, the reaction liquid contains an aggregating agent, 1,2-alkanediol, a glycol ether-based solvent and/or a glycol ether acetate-based solvent, and water, and the emulsion has a glass transition temperature of 50° C. or higher. The ink set for ink-jet printing is provided with an aqueous ink excellent in the discharge stability, and can form an image excellent in coated film properties such as the rubbing resistance and the adherence.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: June 9, 2020
    Assignee: MAXELL HOLDINGS, LTD.
    Inventors: Katsuya Uotome, Katsuyuki Kito, Kaori Kitabatake
  • Publication number: 20200023572
    Abstract: The present invention relates to a model material ink set for use in an optical molding method by an inkjet system, wherein the ink set comprises a color ink and a clear ink containing an ethylenically unsaturated monomer, as a model material ink, wherein the color ink contains, as the ethylenically unsaturated monomer, 30 to 75% of a (meth)acrylate and 10 to 50% of an ethylenically unsaturated monomer that is not a (meth)acrylate and that contains a nitrogen atom, based on a total amount of the color ink, the clear ink contains, as the ethylenically unsaturated monomer, 30 to 80% of a (meth)acrylate based on a total amount of the clear ink, provided that a content of the ethylenically unsaturated monomer that is not a (meth)acrylate and that contains a nitrogen atom is less than 10% based on the total amount of the clear ink.
    Type: Application
    Filed: March 2, 2018
    Publication date: January 23, 2020
    Inventors: Katsuyuki KITO, Taeko IZUMO, Masakatsu OKAWA, Kenta HONGO
  • Publication number: 20190359841
    Abstract: The present invention relates to an optical shaping ink set in which a composition for model material comprises a monofunctional ethylenically unsaturated monomer (A) and a polyfunctional ethylenically unsaturated monomer (B), at least either of the monomer (A) or (B) has a hydroxyl group or an amino group, a total molar fraction of the hydroxyl group and the amino group is 5% to 30% with respect to a total amount of the monomer (A) and (B), or the composition for model material contains an ethylenically unsaturated monomer (C) of which a homopolymer has a Tg of 25° C. to 120° C., an ethylenically unsaturated monomer (D) of which a homopolymer has a Tg of ?65° C. to 25° C.
    Type: Application
    Filed: January 31, 2018
    Publication date: November 28, 2019
    Inventors: Katsuyuki KITO, Taeko IZUMO
  • Publication number: 20190358892
    Abstract: An optical shaping ink set comprises a composition (I) for a model material and a composition (II) for a support material. Composition (I) comprises 50 to 74 PBW (parts by weight) of a monofunctional ethylenically unsaturated monomer (A), 26 to 50 PBW of a polyfunctional ethylenically unsaturated monomer (B), and 2 to 20 PBW of a photopolymerization initiator (C) per 100 PBW of the total composition for the model material, and (B) contains an alkoxylated polyfunctional ethylenically unsaturated monomer, but does not contain an ethylenically unsaturated monomer having a urethane group. Composition (II) comprises 20 to 50 PBW of a water-soluble monofunctional ethylenically unsaturated monomer (a), 20 to 49 PBW of a polyalkylene glycol (b) containing EO and/or PO, 35 PBW or less of a water-soluble organic solvent (c), and 5 to 20 PBW of a photopolymerization initiator (d) per 100 PBW of the total composition for the support material.
    Type: Application
    Filed: January 31, 2017
    Publication date: November 28, 2019
    Inventors: Katsuyuki KITO, Taeko IZUMO
  • Publication number: 20190241691
    Abstract: The present invention provides a resin composition for a model material, for obtaining an optically shaped article that has flexibility and does not crack even when it is bent, and a method for manufacturing optically shaped articles that are shaped using the resin composition for a model material. The present invention relates to a resin composition for a model material, comprising, based on 100 parts by weight of a whole resin composition, 20 to 90 parts by weight of a (meth)acrylate monomer represented by the following formula (1) and/or a (meth)acrylate monomer represented by the following formula (2) as a monofunctional monomer (A), and 5 parts by weight or more of a polyfunctional oligomer as an oligomer (B), and further comprises no or 15 parts by weight or less, based on 100 parts by weight of the whole resin composition, of polyfunctional monomer (C), wherein R1, R2 and R3 each independently represent a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms.
    Type: Application
    Filed: June 22, 2017
    Publication date: August 8, 2019
    Inventors: Katsuyuki KITO, Taeko IZUMO, Masakatsu OKAWA, Kenta HONGO
  • Publication number: 20190077981
    Abstract: There is provided an ink set for ink-jet printing comprising an aqueous ink and a reaction liquid, wherein the aqueous ink contains an emulsion, a surfactant, an organic solvent, a pigment, and water, the reaction liquid contains an aggregating agent, 1,2-alkanediol, a glycol ether-based solvent and/or a glycol ether acetate-based solvent, and water, and the emulsion has a glass transition temperature of 50° C. or higher. The ink set for ink-jet printing is provided with an aqueous ink excellent in the discharge stability, and can form an image excellent in coated film properties such as the rubbing resistance and the adherence.
    Type: Application
    Filed: February 28, 2017
    Publication date: March 14, 2019
    Inventors: Katsuya UOTOME, Katsuyuki KITO, Kaori KITABATAKE
  • Patent number: 9267047
    Abstract: Disclosed is an ink composition for clear layer formation having excellent adhesion properties on substrates, recording layers, and clear layers, as well as excellent overcoat characteristics and refinishing properties. Further disclosed are a coating method for the ink composition, and a printed article formed using the ink composition. The ink composition for clear layer formation is used for forming at least one clear layer on a substrate, or on a printed article on which a printed coating film is formed on a substrate as a recording layer. The ink composition for clear layer formation is characterised in that: the surface free energy of the substrate is 30-45 (mJ/m2); the surface free energy of the recording layer is 40-50 (mJ/m2); the contact angle of the ink composition to the substrate is 30-65 degrees, the contact angle of the ink composition to the recording layer is 40-55 degrees, and the contact angle of the ink composition to the clear layer is 45-60 degrees.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: February 23, 2016
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Katsuyuki Kito, Hideyuki Tanaka, Sadamu Kuse, Yoshiro Nishimura
  • Patent number: 9034939
    Abstract: The present invention relates to a primer ink comprising a polymerizable compound and a polymerization initiator, wherein the polymerizable compound comprises a monofunctional monomer having an aromatic hydrocarbon-based ring structure in a molecule and an aliphatic hydrocarbon-based monofunctional monomer, wherein a total mass of the monofunctional monomer having an aromatic hydrocarbon-based ring structure in a molecule and an aliphatic hydrocarbon-based monofunctional monomer is 80% by mass or more based on the total mass of all polymerizable compounds which the primer ink comprises, and wherein a surface tension of is 25 mN/m to 31 mN/m and a viscosity is 50 mPa·s or less.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: May 19, 2015
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Katsuyuki Kito, Masaru Nakayama, Seigi Kawarai
  • Patent number: 8846779
    Abstract: The present invention provides an energy ray-curable ink composition excellent in the continuous discharge property, and excellent in curability and adherability. The present invention relates to an energy ray-curable ink composition which contains a coloring agent, contains only a monofunctional monomer having an acrylic equivalent of 300 or less, and having one ethylenic double bond in one molecule, and a polyfunctional monomer having an acrylic equivalent of 150 or less, and having two or more ethylenic double bonds in one molecule as a polymerizable compound, contains an ?-aminoalkylphenone compound and a thioxanthone compound as a photopolymerization initiator, and contains a silicone compound having a polydimethylsiloxane structure as a surface conditioner.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: September 30, 2014
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Katsuyuki Kito, Masayuki Oya, Satoshi Kobayashi
  • Publication number: 20130267627
    Abstract: The present invention relates to a primer ink comprising a polymerizable compound and a polymerization initiator, wherein the polymerizable compound comprises a monofunctional monomer having an aromatic hydrocarbon-based ring structure in a molecule and an aliphatic hydrocarbon-based monofunctional monomer, wherein a total mass of the monofunctional monomer having an aromatic hydrocarbon-based ring structure in a molecule and an aliphatic hydrocarbon-based monofunctional monomer is 80% by mass or more based on the total mass of all polymerizable compounds which the primer ink comprises, and wherein a surface tension of is 25 mN/m to 31 mN/m and a viscosity is 50 mPa·s or less.
    Type: Application
    Filed: December 16, 2011
    Publication date: October 10, 2013
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Katsuyuki Kito, Masaru Nakayama, Seigi Kawarai
  • Publication number: 20130004744
    Abstract: Disclosed is an ink composition for clear layer formation having excellent adhesion properties on substrates, recording layers, and clear layers, as well as excellent overcoat characteristics and refinishing properties. Further disclosed are a coating method for the ink composition, and a printed article formed using the ink composition. The ink composition for clear layer formation is used for forming at least one clear layer on a substrate, or on a printed article on which a printed coating film is formed on a substrate as a recording layer. The ink composition for clear layer formation is characterised in that: the surface free energy of the substrate is 30-45 (mJ/m2); the surface free energy of the recording layer is 40-50 (mJ/m2); the contact angle of the ink composition to the substrate is 30-65 degrees, the contact angle of the ink composition to the recording layer is 40-55 degrees, and the contact angle of the ink composition to the clear layer is 45-60 degrees.
    Type: Application
    Filed: September 13, 2010
    Publication date: January 3, 2013
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Katsuyuki Kito, Hideyuki Tanaka, Sadamu Kuse, Yoshiro Nishimura
  • Patent number: 8124666
    Abstract: An object of the present invention is to provide an energy ray-curable ink composition which is excellent in curability and adhesion, and is also excellent in storage stability. The present invention relates to an energy ray-curable ink composition comprising a coloring material; a polyfunctional monomer having three or more ethylenical double bonds in one molecule as a polymerizable compound; an ?-aminoalkylphenone-based compound and a thioxanthone-based compound as photopolymerization initiators; and a hindered amine-based compound having a 2,2,6,6-tetramethylpiperidinyl group as an antigelling agent.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: February 28, 2012
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Katsuyuki Kito, Masayuki Oya, Satoshi Kobayashi
  • Publication number: 20110230582
    Abstract: An energy ray-curable inkjet ink composition comprising polymerizable compounds containing a monofunctional monomer, (A) a reactive oligomer having a rate of elongation of 130% or more and a weight average molecular weight of not less than 800 and less than 3,000 and (B) a reactive oligomer having a rate of elongation of 130% or more and a weight average molecular weight of not less than 3,000 and not more than 8,000, provided that one of the reactive oligomers (A) and (B) is not more than difunctional and the other is not less than difunctional, at least one polymerization initiator selected from the group consisting of (C) an acylphosphine oxide initiator and (D) an ?-aminoalkylphenone initiator, a surface tension modifier, and a colorant.
    Type: Application
    Filed: November 19, 2009
    Publication date: September 22, 2011
    Inventors: Katsuyuki Kito, Satoshi Kobayashi, Kunihiko Koyama