Patents by Inventor Katsumi Yamaguchi

Katsumi Yamaguchi 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: 20240136274
    Abstract: A quantum device capable of effectively cooling a quantum chip and an area (e.g., a space) therearound is provided. A quantum device includes a quantum chip and an interposer on which the quantum chip is located. The interposer includes an interposer substrate and an interposer wiring layer. The interposer wiring layer is disposed on a surface of the interposer substrate on a side on which the quantum chip is located. The interposer wiring layer includes, in at least a part thereof, a superconducting material layer formed of a superconducting material and a non-superconducting material layer formed of a non-superconducting material.
    Type: Application
    Filed: July 26, 2023
    Publication date: April 25, 2024
    Applicant: NEC Corporation
    Inventors: Katsumi KIKUCHI, Akira MIYATA, Suguru WATANABE, Takanori NISHI, Hideyuki SATOU, Kenji NANBA, Ayami YAMAGUCHI
  • Patent number: 11760855
    Abstract: An acrylic resin film is provided that may include graft copolymer particles (A) with a multilayer structure and graft copolymer particles (B) with a multilayer structure, wherein the graft copolymer particles (A) may have an average particle size in the range of 20 to 150 nm, the graft copolymer particles (B) may have a larger average particle size than the graft copolymer particles (A). The graft copolymer particles (A) may include a cross-linked elastomer (A1) and a graft polymer layer (A2), the graft polymer layer (A2) being closer to a surface layer than the cross-linked elastomer (A1). Further, a constituent unit may be derived from an acrylate with an alkyl ester moiety having two or more carbon atoms constitutes 8% or less by mass of the graft polymer layer (A2), the graft copolymer particles (B) may contain a cross-linked elastomer (B1).
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: September 19, 2023
    Assignee: KANEKA CORPORATION
    Inventors: Haruki Koyama, Hanako Hasebe, Katsumi Yamaguchi, Yukihiro Shimamoto
  • Patent number: 11198783
    Abstract: Provided is a dope used when a film containing an acrylic-based resin and a core-shell type graft copolymer is made by a solution casting method, in which turbidity is less likely to occur despite the use of a core-shell type graft copolymer having a core layer with a large particle diameter. A dope for producing a film by a solution casting method contains a thermoplastic acrylic-based resin, a graft copolymer, and a solvent. In this dope, the graft copolymer has a core layer and a shell layer, the core layer has an average particle diameter of 125 to 400 nm, the graft copolymer has a degree of swelling by methyl ethyl ketone of 3.5 or more, and the solvent has a hydrogen bonding term ?H in a Hansen solubility parameter of 6.0 or more and 8.0 or less.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: December 14, 2021
    Assignee: KANEKA CORPORATION
    Inventors: Fuminobu Kitayama, Naoto Kataoka, Toru Yamatani, Katsumi Yamaguchi
  • Publication number: 20210002437
    Abstract: An acrylic resin film is provided that may include graft copolymer particles (A) with a multilayer structure and graft copolymer particles (B) with a multilayer structure, wherein the graft copolymer particles (A) may have an average particle size in the range of 20 to 150 nm, the graft copolymer particles (B) may have a larger average particle size than the graft copolymer particles (A). The graft copolymer particles (A) may include a cross-linked elastomer (A1) and a graft polymer layer (A2), the graft polymer layer (A2) being closer to a surface layer than the cross-linked elastomer (A1). Further, a constituent unit may be derived from an acrylate with an alkyl ester moiety having two or more carbon atoms constitutes 8% or less by mass of the graft polymer layer (A2), the graft copolymer particles (B) may contain a cross-linked elastomer (B1).
    Type: Application
    Filed: September 17, 2020
    Publication date: January 7, 2021
    Applicant: KANEKA CORPORATION
    Inventors: Haruki Koyama, Hanako Hasebe, Katsumi Yamaguchi, Yukihiro Shimamoto
  • Publication number: 20200172720
    Abstract: Provided is a dope used when a film containing an acrylic-based resin and a core-shell type graft copolymer is made by a solution casting method, in which turbidity is less likely to occur despite the use of a core-shell type graft copolymer having a core layer with a large particle diameter. A dope for producing a film by a solution casting method contains a thermoplastic acrylic-based resin, a graft copolymer, and a solvent. In this dope, the graft copolymer has a core layer and a shell layer, the core layer has an average particle diameter of 125 to 400 nm, the graft copolymer has a degree of swelling by methyl ethyl ketone of 3.5 or more, and the solvent has a hydrogen bonding term ?H in a Hansen solubility parameter of 6.0 or more and 8.0 or less.
    Type: Application
    Filed: May 16, 2018
    Publication date: June 4, 2020
    Applicant: KANEKA CORPORATION
    Inventors: Fuminobu KITAYAMA, Naoto KATAOKA, Toru YAMATANI, Katsumi YAMAGUCHI
  • Patent number: 10138309
    Abstract: A method for producing a particulate polymer includes polymerizing a monomer having a vinyl group in an aqueous solvent in the presence of a surfactin salt and a polymerization initiator, wherein a concentration of the surfactin salt in a polymerization reaction liquid is adjusted depending on a target particle diameter of the particulate polymer.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: November 27, 2018
    Assignees: KANEKA CORPORATION, National University Corporation Kobe University
    Inventors: Takuto Nagano, Katsumi Yamaguchi, Hideto Minami
  • Publication number: 20170335029
    Abstract: A method for producing a particulate polymer includes polymerizing a monomer having a vinyl group in an aqueous solvent in the presence of a surfactin salt and a polymerization initiator, wherein a concentration of the surfactin salt in a polymerization reaction liquid is adjusted depending on a target particle diameter of the particulate polymer.
    Type: Application
    Filed: August 1, 2017
    Publication date: November 23, 2017
    Applicants: Kaneka Corporation, National University Corporation Kobe University
    Inventors: Takuto Nagano, Katsumi Yamaguchi, Hideto Minami
  • Publication number: 20150247013
    Abstract: Disclosed herein is a film that exhibits well-balanced physical properties such as high surface hardness, excellent transparency, excellent cracking resistance, and excellent anti-whitening on bending when laminated on a plastic molded body, and is therefore suitable for decorative molding applications. The film is an acrylic resin film obtained by forming, into a film, an acrylic resin composition containing an acrylic resin and a rubber-containing graft copolymer, the rubber-containing graft copolymer being obtained by polymerizing monomer components (B-1) to (B-4) in order so that rubber particles obtained by polymerizing (B-1) to (B-3) have an average particle size of 0.2 to 0.4 ?m. The monomer component (B-1) comprises 40 to 100 wt % of an acrylate, 60 to 0 wt % of a monofunctional monomer copolymerizable therewith, and 0.05 to 10 parts by weight of a polyfunctional monomer.
    Type: Application
    Filed: September 11, 2013
    Publication date: September 3, 2015
    Inventors: Haruki Koyama, Hirotsugu Yamada, Fuminobu Kitayama, Katsumi Yamaguchi
  • Patent number: 8916794
    Abstract: A metal jet apparatus comprises a discharge nozzle 31 for jetting molten metal 20, and a gas passage 33 for supplying inert gas to a peripheral portion of a discharge port 32 of the discharge nozzle 31. The discharge port 32 of the discharge nozzle 31 and an outlet of a gas passage 33 are provided with a nozzle cover 34. The nozzle cover 34 includes a space 35 which is in communication with the discharge port 32 and the outlet of the gas passage 33, and which opens downward. A ring-like projection 36 is disposed around the opening. When the molten metal 20 is jetted from the discharge port 32 into the space 35, the inert gas is supplied to the space 35, thereby preventing the molten metal 20 from being oxidized, and it is possible to prevent the nozzle of the discharge port 32 from being clogged, and to form the molten metal 20 into a spherical shape.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: December 23, 2014
    Assignees: Japan Science and Technology Agency
    Inventors: Katsumi Yamaguchi, Hiroshi Nakamura
  • Patent number: 8680180
    Abstract: An epoxy resin composition comprises an epoxy resin (A) and rubber-like polymer particles (B). The rubber-like polymer particles (B) maintain a finely dispersed state of primary particles. The content of the rubber-like polymer particles (B) is 0.5 to 80% by weight when the total amount of the epoxy resin (A) and rubber-like polymer particles (B) is 100% by weight. Rubber-like polymer particles (B) are obtainable by graft-polymerizing 5 to 50% by weight of a shell layer (B-2) with 50 to 95% by weight of a rubber particle core (B-1), and average particle diameter of the rubber-like polymer particles (B) is 0.03 to 2 ?m. Rubber particle core (B-1) comprises elastic material of not less than 50% by weight of at least one monomer selected from diene monomers and (meth)acrylate monomers and less than 50% by weight of another coploymerizable vinyl monomer, or polysiloxane rubber elastic materials, or a mixture thereof.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: March 25, 2014
    Assignee: Kaneka Corporation
    Inventors: Katsumi Yamaguchi, Masakuni Ueno, Masahiro Miyamoto
  • Patent number: 8368822
    Abstract: To provide an image display apparatus that is allowed to incorporate a panel module with excellent mechanical strength even if a screen is upsized and the apparatus is slimmed down. Strengthening units are mounted along a horizontal direction on canopies provided on an upper portion and a lower portion of a panel module constituting a display unit of a large-size, thin image display apparatus. Also, supporting members are mounted on the upper and lower strengthening units in such a manner that the supporting members bridge between the upper and lower strengthening units, so that a stand, or a chain or a string to be used when hanging the image display apparatus is mountable to the supporting members. This prevents direct application of external force to the panel module.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: February 5, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Yasuhiko Suzuki, Katsumi Yamaguchi, Nobuyuki Kaku
  • Patent number: 8344054
    Abstract: Nanocomposites and method of making same are provided using nanoplatelets. A nanocomposite is provided, and the nanocomposite includes nanoparticles, inorganic platelets, and a polymer material. A method is provided for dispersing nanoparticles into a polymeric material by using inorganic nanoplatelets.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: January 1, 2013
    Assignee: The Texas A & M University System
    Inventors: Dazhi Sun, Hung-Jue Sue, Luyi Sun, Nobuo Miyatake, Katsumi Yamaguchi
  • Patent number: 8222324
    Abstract: This invention provides a process for producing an epoxy resin composition having core/shell rubber particles (rubber-like polymer particles) dispersed in an epoxy resin, wherein an epoxy resin composition excellent in the dispersed state of rubber-like polymer particles in an epoxy resin with a reduced amount of contaminants is produced easily and efficiently. The epoxy resin composition having rubber-like polymer particles dispersed well in an epoxy resin with less contaminant is obtained by bringing an aqueous latex of rubber-like polymer particles (B) into contact with an organic medium (C) showing partial solubility in water, then bringing an organic medium (D) having lower partial solubility in water than that of the organic medium (C) into contact therewith to separate water substantially, to remove the rubber-like polymer particles as a dispersion (F) having the polymer particles dispersed in the organic medium, and mixing it with an epoxy resin (A), followed by distilling volatile components away.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: July 17, 2012
    Assignee: Kaneka Corporation
    Inventors: Katsumi Yamaguchi, Masakuni Ueno, Masahiro Miyamoto
  • Publication number: 20120142820
    Abstract: An epoxy resin composition comprises an epoxy resin (A) and rubber-like polymer particles (B). The rubber-like polymer particles (B) maintain a finely dispersed state of primary particles. The content of the rubber-like polymer particles (B) is 0.5 to 80% by weight when the total amount of the epoxy resin (A) and rubber-like polymer particles (B) is 100% by weight. Rubber-like polymer particles (B) are obtainable by graft-polymerizing 5 to 50% by weight of a shell layer (B-2) with 50 to 95% by weight of a rubber particle core (B-1), and average particle diameter of the rubber-like polymer particles (B) is 0.03 to 2 ?m. Rubber particle core (B-1) comprises elastic material of not less than 50% by weight of at least one monomer selected from diene monomers and (meth)acrylate monomers and less than 50% by weight of another coploymerizable vinyl monomer, or polysiloxane rubber elastic materials, or a mixture thereof.
    Type: Application
    Filed: February 13, 2012
    Publication date: June 7, 2012
    Applicant: KANEKA CORPORATION
    Inventors: Katsumi YAMAGUCHI, Masakuni UENO, Masahiro MIYAMOTO
  • Publication number: 20100249335
    Abstract: A zinc oxide polymer nanocomposite composed of zinc oxide nanoparticles. The zinc oxide nanoparticles of the nanocomposite have an average particle size of about 1 nanometer to about 20 nanometers. Suitable polymers of the nanocomposites have less than about 500 ppm alkali metal. A process is provided for preparing the zinc oxide polymer nanocomposites comprising a) preparing a first combination comprising zinc oxide nanoparticles and a polymer; b) preparing a second combination comprising the first combination and an organic solvent; and c) precipitating the zinc oxide nanoparticles and the polymer out of the second combination. The zinc oxide nanoparticles of the first combination have an average particle size of between about 1 nanometer and about 20 nanometers.
    Type: Application
    Filed: June 1, 2010
    Publication date: September 30, 2010
    Applicants: Texas A&M University System, Kaneka Corporation
    Inventors: Nobuo Miyatake, Yuntao Li, Hung-Jue Sue, Katsumi Yamaguchi
  • Publication number: 20090233090
    Abstract: The present invention relates to transparent nanocomposites comprising of metal oxide nanoparticles dispersed in polymer matrix. The nanoparticles have capping agents attached onto the nanoparticle surfaces and a precursor solution of capped nanoparticles and polymer is prepared and dried to obtain the nanocomposites. The nanocomposites exhibit UV absorption, low haze, and improved thermal stability. The present invention also relates to the methods associated with the preparation of capped nanoparticles, precursor solution and nanocomposites.
    Type: Application
    Filed: October 3, 2006
    Publication date: September 17, 2009
    Inventors: Minhao Wong, Katsumi Yamaguchi, Ryotaro Tsuji
  • Publication number: 20090225240
    Abstract: To provide an image display apparatus that is allowed to incorporate a panel module with excellent mechanical strength even if a screen is upsized and the apparatus is slimmed down. Strengthening units are mounted along a horizontal direction on canopies provided on an upper portion and a lower portion of a panel module constituting a display unit of a large-size, thin image display apparatus. Also, supporting members are mounted on the upper and lower strengthening units in such a manner that the supporting members bridge between the upper and lower strengthening units, so that a stand, or a chain or a string to be used when hanging the image display apparatus is mountable to the supporting members. This prevents direct application of external force to the panel module.
    Type: Application
    Filed: October 1, 2008
    Publication date: September 10, 2009
    Inventors: Yasuhiko Suzuki, Katsumi Yamaguchi, Nobuyuki Kaku
  • Publication number: 20090191762
    Abstract: It is an object of the present invention to provide a card connector which prevents inadvertent dropping of a card having a narrow width relative to the receiving slot to be inserted. The card connector includes receiving slots that are stacked and receive a plurality of memory cards of different standards. The card connector minimizes the height so as to be replaceable with a conventional card connector. The card connector has a first card receiving slot that receives a first card and a second card receiving slot that accommodates a second card receiving unit. The second card receiving unit receives a second card. The second card receiving unit has a top frame that restricts the upper surface of a second card main body. A cutout part, having a shape that allows at least a portion of the top frame to fit in the thickness direction, is formed in a partition frame.
    Type: Application
    Filed: January 27, 2009
    Publication date: July 30, 2009
    Inventor: Katsumi Yamaguchi
  • Patent number: 7537470
    Abstract: An ejection mechanism for a connector is disclosed. The connector has a housing that carries contacts, a frame attached to the housing for guiding insertion and removal of a card, and a pivot arm disposed in the housing that ejects the card toward a removal side by pivoting. The ejection mechanism has a cover connected to the frame, a push bar having a push button. The ejection mechanism also has a cam groove plate with a cam groove connected to the cover. The ejection mechanism also has a cam pin connected to the push bar and received within the cam groove. The ejection mechanism also has a push plate having a restricting hole that receives the cam pin and the push plate is configured to pivot the pivot arm in reaction to movement of the push button.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: May 26, 2009
    Assignee: Tyco Electronics AMP K.K.
    Inventor: Katsumi Yamaguchi
  • Patent number: 7485680
    Abstract: A process for efficiently producing an agglomerate resulting from removal of impurities from a water-base latex of rubbery polymer particles or dry Powder thereof and producing a dispersion having rubbery polymer particles dispersed in an organic solvent, and a process for efficiently producing a resin composition of low impurity content, in which the state of dispersion of rubbery polymer particles is excellent, from the above dispersion. In particular, a rubbery polymer particle agglomerate of low impurity content is obtained by first mixing a water-base latex of rubbery polymer particles with an organic solvent exhibiting partial solubility in water, bringing the resultant mixture into contact with water to thereby form a rubbery polymer particle agglomerate, and thereafter separating the water phase from the agglomerate/water phase mixture.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: February 3, 2009
    Assignee: Kaneka Corporation
    Inventors: Ryuji Furukawa, Masakuni Ueno, Katsumi Yamaguchi, Chiho Yoshimi, Yoshihiro Ikeda