Patents by Inventor Katsumi Araki

Katsumi Araki 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).

  • Publication number: 20210355336
    Abstract: Provided are an ink jet ink composition for a polyvinyl chloride building material, an image recording method, and an image recorded article. The ink jet ink composition contains a monomer A that is a polymerizable monomer having a basic group including a nitrogen atom and an inorganic pigment including at least one element selected from the group consisting of cobalt, aluminum, iron, bismuth, vanadium, titanium, and carbon.
    Type: Application
    Filed: July 30, 2021
    Publication date: November 18, 2021
    Inventor: Katsumi ARAKI
  • Patent number: 9099141
    Abstract: An aspect of the present invention relates to a radiation-curable vinyl chloride resin composition comprising a vinyl chloride resin containing a radiation-curable functional group, and/or starting material compounds thereof, as well as a benzoquinone compound.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: August 4, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Katsumi Araki, Kazufumi Omura
  • Patent number: 8889813
    Abstract: An aspect of the present invention relates to a mixture of a sulfonate group-containing compound denoted by general formula (1) with a protonic acid: wherein, in general formula (1), X denotes a divalent linking group; each of R1 and R2 independently denotes an alkyl group comprising at least one hydroxyl group and equal to or more than three carbon atoms or an aralkyl group comprising at least one hydroxyl group and equal to or more than eight carbon atoms; and M denotes a cation.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: November 18, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Kazufumi Omura, Katsumi Araki
  • Patent number: 8795858
    Abstract: An aspect of the present invention relates to a magnetic recording medium comprising a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support, wherein the binder of the magnetic layer is a mixture of a vinyl chloride copolymer, polyurethane resin, and polyisocyanate, the polyurethane resin having a glass transition temperature ranging from 90 to 130° C. and a storage elastic modulus at 80° C. ranging from 2.5 to 5.0 GPa, the nonmagnetic layer is a radiation-cured layer formed by curing with radiation a radiation-curable composition comprising a nonmagnetic powder and a binder component, the binder component comprising a radiation-curable vinyl chloride copolymer and a radiation-curable polyurethane resin, and the radiation-curable vinyl chloride copolymer and radiation-curable polyurethane resin both have glass transition temperatures ranging from 30 to 100° C.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: August 5, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Masahide Sato, Katsumi Araki, Kazufumi Omura, Tomohiro Ichikawa, Shinji Tsujimoto, Tadahiro Ooishi
  • Patent number: 8714088
    Abstract: A lithographic printing plate precursor includes an image-recording layer and a protective layer containing a stratiform compound, wherein at least one of the image-recording layer and the protective layer contains a polymer containing as a repeating unit, a structural unit having an ammonium structure.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: May 6, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Toyohisa Oya, Kazuto Kunita, Katsumi Araki, Yu Iwai, Koji Sonokawa, Tomoya Sasaki
  • Patent number: 8632896
    Abstract: An aspect of the present invention relates to a radiation-curable vinyl chloride copolymer, which comprises a structural unit denoted by general formula (1): wherein, in general formula (1), R1 denotes a hydrogen atom or a methyl group, and L1 denotes a divalent linking group denoted by formula (2), formula (3), or general formula (4): wherein, in general formula (4), R41 denotes a hydrogen atom or a methyl group.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: January 21, 2014
    Assignee: FUJIFILM Corporation
    Inventor: Katsumi Araki
  • Patent number: 8617728
    Abstract: An aspect of the present invention relates to a magnetic tape comprising a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support. The nonmagnetic layer is a radiation-cured layer formed by curing with radiation a given radiation-curable composition. The nonmagnetic layer has a thickness ranging from 0.5 to 1.3 ?m. The relation between the nonmagnetic powder and the binder component contained in the radiation-curable composition satisfies equation (I): 480?(BET specific surface area of the nonmagnetic powder (m2/g)×weight of the nonmagnetic powder (g))/weight of the binder component (g)?650??(I).
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: December 31, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Shinji Tsujimoto, Katsumi Araki, Tomohiro Ichikawa
  • Patent number: 8603652
    Abstract: An aspect of the present invention relates to a magnetic recording medium comprising on one surface of a nonmagnetic support a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order, as well as comprising a backcoat layer on the other surface of the nonmagnetic support. The nonmagnetic layer is a radiation-cured layer formed by curing with radiation a given radiation-curable composition, and the backcoat layer comprises filler particles with an average primary particle diameter, D50, ranging from 0.05 to 1.0 ?m, the filler particles being selected from the group consisting of organic polymer particles and inorganic colloidal particles.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: December 10, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Tadashi Ishiguro, Katsumi Araki, Kenichi Nakamura
  • Patent number: 8415036
    Abstract: An aspect of the present invention relates to a mixture of a sulfonate group-containing compound denoted by general formula (1) with a protonic acid: wherein, in general formula (1), X denotes a divalent linking group; each of R1 and R2 independently denotes an alkyl group comprising at least one hydroxyl group and equal to or more than three carbon atoms or an aralkyl group comprising at least one hydroxyl group and equal to or more than eight carbon atoms; and M denotes a cation.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: April 9, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Kazufumi Omura, Katsumi Araki
  • Patent number: 8124304
    Abstract: The invention provides a dye-containing curable composition that has the property of high sensitivity, and that even when formed into a thin film at high dye concentration, excels in patternability, and is free from dye elution and ensures high productivity; and a color filter making use of the dye-containing curable composition and a method for producing the same. The dye-containing curable composition contains an organic-solvent-soluble dye (A) and a curing agent (C), wherein a content of the organic-solvent-soluble dye (A) is 45% by mass or more based on a total solid content and a content of the curing agent (C) is 20% by mass to 55% by mass based on the total solid content.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: February 28, 2012
    Assignee: Fujifilm Corporation
    Inventors: Taeko Aizawa, Katsumi Araki
  • Publication number: 20110274947
    Abstract: An aspect of the present invention relates to a magnetic recording medium comprising on one surface of a nonmagnetic support a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order, as well as comprising a backcoat layer on the other surface of the nonmagnetic support. The nonmagnetic layer is a radiation-cured layer formed by curing with radiation a given radiation-curable composition, and the backcoat layer comprises filler particles with an average primary particle diameter, D50, ranging from 0.05 to 1.0 ?m, the filler particles being selected from the group consisting of organic polymer particles and inorganic colloidal particles.
    Type: Application
    Filed: March 9, 2011
    Publication date: November 10, 2011
    Applicant: FUJIFILM CORPORATION
    Inventors: Tadashi ISHIGURO, Katsumi ARAKI, Kenichi NAKAMURA
  • Publication number: 20110229741
    Abstract: An aspect of the present invention relates to a magnetic recording medium comprising a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support, wherein the binder of the magnetic layer is a mixture of a vinyl chloride copolymer, polyurethane resin, and polyisocyanate, the polyurethane resin having a glass transition temperature ranging from 90 to 130° C. and a storage elastic modulus at 80° C. ranging from 2.5 to 5.0 GPa, the nonmagnetic layer is a radiation-cured layer formed by curing with radiation a radiation-curable composition comprising a nonmagnetic powder and a binder component, the binder component comprising a radiation-curable vinyl chloride copolymer and a radiation-curable polyurethane resin, and the radiation-curable vinyl chloride copolymer and radiation-curable polyurethane resin both have glass transition temperatures ranging from 30 to 100° C.
    Type: Application
    Filed: March 18, 2011
    Publication date: September 22, 2011
    Applicant: FUJIFILM CORPORATION
    Inventors: Masahide SATO, Katsumi ARAKI, Kazufumi OMURA, Tomohiro ICHIKAWA, Shinji TSUJIMOTO, Tadahiro OOISHI
  • Publication number: 20110229740
    Abstract: An aspect of the present invention relates to a magnetic tape comprising a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support. The nonmagnetic layer is a radiation-cured layer formed by curing with radiation a given radiation-curable composition. The nonmagnetic layer has a thickness ranging from 0.5 to 1.3 ?m. The relation between the nonmagnetic powder and the binder component contained in the radiation-curable composition satisfies equation (I): 480?(BET specific surface area of the nonmagnetic powder (m2/g)×weight of the nonmagnetic powder (g))/weight of the binder component (g)?650??(I).
    Type: Application
    Filed: March 15, 2011
    Publication date: September 22, 2011
    Applicant: FUJIFILM CORPORATION
    Inventors: Shinji TSUJIMOTO, Katsumi ARAKI, Tomohiro ICHIKAWA
  • Publication number: 20110111258
    Abstract: An aspect of the present invention relates to a radiation-curable vinyl chloride copolymer, which comprises a structural unit denoted by general formula (1): wherein, in general formula (1), R1 denotes a hydrogen atom or a methyl group, and L1 denotes a divalent linking group denoted by formula (2), formula (3), or general formula (4): wherein, in general formula (4), R41 denotes a hydrogen atom or a methyl group.
    Type: Application
    Filed: November 11, 2010
    Publication date: May 12, 2011
    Applicant: FUJIFILM CORPORATION
    Inventor: Katsumi ARAKI
  • Publication number: 20110027619
    Abstract: An aspect of the present invention relates to a radiation-curable vinyl chloride resin composition comprising a vinyl chloride resin containing a radiation-curable functional group, and/or starting material compounds thereof, as well as a benzoquinone compound.
    Type: Application
    Filed: July 30, 2010
    Publication date: February 3, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Katsumi Araki, Kazufumi Omura
  • Publication number: 20110027620
    Abstract: An aspect of the present invention relates to a radiation-curable polyurethane resin composition comprising a polyurethane resin containing a radiation-curable functional group and/or starting material compounds thereof, as well as component C in the form of a phenol compound, and component D in the form of at least one compound selected from the group consisting of a piperidine-1-oxyl compound, a nitro compound, a benzoquinone compound and a phenothiazine compound.
    Type: Application
    Filed: July 30, 2010
    Publication date: February 3, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Katsumi ARAKI, Kazufumi Omura
  • Publication number: 20100273029
    Abstract: An aspect of the present invention relates to a mixture of a sulfonate group-containing compound denoted by general formula (1) with a protonic acid: wherein, in general formula (1), X denotes a divalent linking group; each of R1 and R2 independently denotes an alkyl group comprising at least one hydroxyl group and equal to or more than three carbon atoms or an aralkyl group comprising at least one hydroxyl group and equal to or more than eight carbon atoms; and M denotes a cation.
    Type: Application
    Filed: April 27, 2010
    Publication date: October 28, 2010
    Applicant: FUJIFILM CORPORATION
    Inventors: Kazufumi OMURA, Katsumi ARAKI
  • Patent number: 7763401
    Abstract: The invention provides a colorant-containing curable negative-type composition containing at least a colorant, a cross-linking agent, and a photosensitive agent and satisfying the following Condition (1) relevant to the mass of the respective components in the case the composition further contains a binder, and satisfying the following Condition (2) relevant to the mass of the respective components in the case the composition does not contain a binder: Condition (1): wherein the mass of the binder >0, 0.45?the mass of the colorant/[the mass of the colorant+the mass of the cross-linking agent+the mass of the photosensitive agent+the mass of the binder]<1.0 and 2<[the mass of the cross-linking agent/the mass of the binder]; and Condition (2): wherein the mass of the binder=0, 0.45?the mass of the colorant/[the mass of the colorant+the mass of the cross-linking agent+the mass of the photosensitive agent]<1.0.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: July 27, 2010
    Assignee: FUJIFILM Corporation
    Inventor: Katsumi Araki
  • Patent number: 7745076
    Abstract: A dye-containing curable composition including a binder and a dye that is soluble in an organic solvent, in which the binder contains a structural unit represented by the following general formula (I) and has a glass transition temperature in a range of 0 to 250° C. In general formula (I), R1 represents a hydrogen atom or a methyl group; R2 represents an oxygen atom, —NH—, or —N(R3—R4)—; R3 represents a substituted or unsubstituted divalent group; and R4 represents a group containing an unsaturated double bond.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: June 29, 2010
    Assignee: FUJIFILM Corporation
    Inventor: Katsumi Araki
  • Patent number: 7737305
    Abstract: A compound represented by the Formula (1) below is provided: wherein X denotes a divalent linking group, R1 and R2 independently denote an alkyl group having 3 or more carbons and having at least one hydroxy group or an aralkyl group having 8 or more carbons and having at least one hydroxy group, the alkyl group and aralkyl group may have a substituent, and M denotes a hydrogen atom or a cation. There is also provided a polyurethane resin obtained by polymerization of a polyisocyanate and a polyol that includes the compound. There is also provided a magnetic recording medium that includes a non-magnetic support and, above the support, at least one magnetic layer including a ferromagnetic powder dispersed in a binder that includes the polyurethane resin.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: June 15, 2010
    Assignee: FUJIFILM Corporation
    Inventors: Kazufumi Omura, Masahiko Mori, Katsumi Araki, Masataka Yoshizawa