Patents by Inventor Yukio Maeda

Yukio Maeda 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: 10465338
    Abstract: A production method of an elastically stretchable artificial leather which includes a step of making microfiberizable fibers into a web; a step of entangling the obtained web to produce an entangled nonwoven fabric; a step of converting the microfiberizable fibers in the nonwoven fabric to microfine fibers, thereby producing a substrate for artificial leather; a step of producing an artificial leather by using the obtained substrate for artificial leather; and a step wherein the obtained artificial leather is brought into close contact with an elastomer sheet stretched in a machine direction by 5 to 40%; the artificial leather is allowed to shrink in the machine direction simultaneously with allowing the elastomer sheet to shrink in the machine direction by relaxing elongation of the elastomer sheet; the artificial leather is heat-treated in shrunk state; and then the artificial leather is peeled off from the elastomer sheet.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: November 5, 2019
    Assignee: KURARAY CO., LTD.
    Inventors: Michinori Fujisawa, Yukio Maeda, Kazumasa Inoue, Yasutoshi Nomura, Tetsuya Ashida, Hisaichi Watanabe
  • Publication number: 20190292723
    Abstract: Disclosed herein is a method for producing an elastically stretchable artificial leather, which includes the steps of forming microfiberizable fibers into a web, entangling the obtained web to produce an entangled nonwoven fabric, converting the microfiberizable fibers in the nonwoven fabric to microfine fibers thereby producing a substrate for artificial leather, producing an artificial leather from the obtained substrate for artificial leather, bringing the obtained artificial leather into close contact with an elastomer sheet stretched in a machine direction by 5 to 40%, shrinking the artificial leather in the machine direction simultaneously with the elastomer sheet by relaxing elongation of the elastomer sheet to obtain an artificial leather in shrunk state, heat treating the artificial leather in shrunk state, and then peeling the heat treated artificial leather off from the elastomer sheet.
    Type: Application
    Filed: June 13, 2019
    Publication date: September 26, 2019
    Applicant: Kuraray Co., Ltd.
    Inventors: Michinori Fujisawa, Yukio Maeda, Kazumasa Inoue, Yasutoshi Nomura, Tetsuya Ashida, Hisaichi Watanabe
  • Patent number: 10257927
    Abstract: Provided is a mother ceramic substrate that, when divided into individual substrates (ceramic substrates), can be divided to cause divided end surfaces to be perpendicular to principal surfaces of the individual substrates, and that can provide ceramic substrates with high form accuracy; an individual ceramic substrate obtained from the mother ceramic substrate; a module component including the ceramic substrate; and a method of manufacturing a mother ceramic substrate. In a mother ceramic substrate that can be divided at a predetermined position and separated into a plurality of individual substrates, a dividing groove that defines a division position is formed in a principal surface on one side, and a protruding thread is formed on a principal surface on another side at a position corresponding to a position of the dividing groove formed in the principal surface on the one side in view in a thickness direction of the mother ceramic substrate.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: April 9, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yukio Maeda, Masashi Matsubara, Daigo Matsubara, Masatoshi Kariya
  • Patent number: 10010979
    Abstract: A solder paste for soldering micro components which suppress electro-migration is provided. The solder paste comprising: a powdered Pb-free soldering alloy comprising Cu of 0.1˜3.0 wt. % and In of 0.5˜8.0 wt. % simultaneously in addition to Sn; and a pasty or liquid flux; the powdered Pb-free soldering alloy and the pasty or liquid flux being mixed; whereby effectively suppressing electro-migration occurring at a solder bonding portion. It is possible to add Ag, Sb, Ni, Co, Fe, Mn and Cr as a strength improvement element, Bi and Zn as a melting point drop element and P, Ga and Ge as an anti-oxidant element to the powdered Pb-free soldering alloy.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: July 3, 2018
    Assignee: Nihon Almit Co., Ltd.
    Inventors: Tadashi Sawamura, Takeo Igarashi, Yukio Maeda, Kazuhiko Kaneko
  • Patent number: 9814124
    Abstract: The present disclosure provides a surge protection device including a ceramic substrate (1), at least one pair of discharge electrodes (31) disposed on a surface of the ceramic substrate (1) so as to face each other at end portions thereof with a space in between, outer electrodes (32) electrically connected to the corresponding discharge electrodes (31), and a discharge auxiliary electrode (4) disposed between the end portions of the pair of discharge electrodes (31) The discharge auxiliary electrode (4) contains crystalized glass and particles of conductive powder (40) dispersed apart from each other in the crystalized glass.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: November 7, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masanori Okamoto, Yukio Maeda, Shuji Matsumoto
  • Publication number: 20170079137
    Abstract: Provided is a mother ceramic substrate that, when divided into individual substrates (ceramic substrates), can be divided to cause divided end surfaces to be perpendicular to principal surfaces of the individual substrates, and that can provide ceramic substrates with high form accuracy; an individual ceramic substrate obtained from the mother ceramic substrate; a module component including the ceramic substrate; and a method of manufacturing a mother ceramic substrate. In a mother ceramic substrate that can be divided at a predetermined position and separated into a plurality of individual substrates, a dividing groove that defines a division position is formed in a principal surface on one side, and a protruding thread is formed on a principal surface on another side at a position corresponding to a position of the dividing groove formed in the principal surface on the one side in view in a thickness direction of the mother ceramic substrate.
    Type: Application
    Filed: November 22, 2016
    Publication date: March 16, 2017
    Inventors: Yukio MAEDA, Masashi MATSUBARA, Daigo MATSUBARA, Masatoshi KARIYA
  • Publication number: 20160105948
    Abstract: The present disclosure provides a surge protection device including a ceramic substrate (1), at least one pair of discharge electrodes (31) disposed on a surface of the ceramic substrate (1) so as to face each other at end portions thereof with a space in between, outer electrodes (32) electrically connected to the corresponding discharge electrodes (31), and a discharge auxiliary electrode (4) disposed between the end portions of the pair of discharge electrodes (31) The discharge auxiliary electrode (4) contains crystalized glass and particles of conductive powder (40) dispersed apart from each other in the crystalized glass.
    Type: Application
    Filed: December 17, 2015
    Publication date: April 14, 2016
    Inventors: Masanori Okamoto, Yukio Maeda, Shuji Matsumoto
  • Publication number: 20150050460
    Abstract: A production method of an elastically stretchable artificial leather which includes a step of making microfiberizable fibers into a web; a step of entangling the obtained web to produce an entangled nonwoven fabric; a step of converting the microfiberizable fibers in the nonwoven fabric to microfine fibers, thereby producing a substrate for artificial leather; a step of producing an artificial leather by using the obtained substrate for artificial leather; and a step wherein the obtained artificial leather is brought into close contact with an elastomer sheet stretched in a machine direction by 5 to 40%; the artificial leather is allowed to shrink in the machine direction simultaneously with allowing the elastomer sheet to shrink in the machine direction by relaxing elongation of the elastomer sheet; the artificial leather is heat-treated in shrunk state; and then the artificial leather is peeled off from the elastomer sheet.
    Type: Application
    Filed: February 26, 2013
    Publication date: February 19, 2015
    Applicant: KURARAY CO., LTD.
    Inventors: Michinori Fujisawa, Yukio Maeda, Kazumasa Inoue, Yasutoshi Nomura, Tetsuya Ashida, Hisaichi Watanabe
  • Publication number: 20130327444
    Abstract: A solder paste for soldering micro components which suppress electro-migration is provided. The solder paste comprising: a powdered Pb-free soldering alloy comprising Cu of 0.1˜3.0 wt. % and In of 0.5˜8.0 wt. % simultaneously in addition to Sn; and a pasty or liquid flux; the powdered Pb-free soldering alloy and the pasty or liquid flux being mixed; whereby effectively suppressing electro-migration occurring at a solder bonding portion. It is possible to add Ag, Sb, Ni, Co, Fe, Mn and Cr as a strength improvement element, Bi and Zn as a melting point drop element and P, Ga and Ge as an anti-oxidant element to the powdered Pb-free soldering alloy.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 12, 2013
    Applicant: Nihon Almit Co., Ltd.
    Inventors: Tadashi Sawamura, Takeo Igarashi, Yukio Maeda, Kazuhiko Kaneko
  • Patent number: 8330568
    Abstract: A multilayer coil component includes internal conductors made of silver (Ag) having metal films provided on surfaces thereof to suppress migration of Ag contained in the internal conductors and/or relieve internal stress between magnetic ceramic layers and internal conductor layers without forming gaps at interfaces between the internal conductors including the metal films and a magnetic ceramic surrounding the internal conductors and the interfaces between the internal conductors and the magnetic ceramic. In a manufacturing method for forming a multilayer coil, an acidic solution containing a metal is allowed to penetrate a magnetic ceramic through side surfaces thereof and side gap sections that are regions between side portions of internal conductors and the side surfaces to reach the interfaces between the internal conductors and a surrounding magnetic ceramic, whereby the metal is deposited on surfaces of the internal conductors.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: December 11, 2012
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masaharu Konoue, Yukio Maeda, Tatsuya Mizuno, Hiroki Hashimoto, Mitsuru Ueda
  • Patent number: 8004383
    Abstract: A highly reliable multilayer coil component is provided without forming voids between magnetic ceramic layers and internal conductor layers. According to the multilayer coil component, an internal stress problem is reduced, the direct current resistance is low, and fracture of internal conductors caused by the surge or the like is not likely to occur. An acidic solution is allowed to permeate a magnetic ceramic element from a side surface thereof through a side gap portion which is a region between side portions of the internal conductors and the side surface of the magnetic ceramic element and to reach interfaces between the internal conductors and a magnetic ceramic located therearound. A pore area ratio of the magnetic ceramic of the side gap portion which is located between the side portions of the internal conductors and the side surface of the magnetic ceramic element is set in the range of 6% to 28%.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: August 23, 2011
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masaharu Konoue, Yukio Maeda, Tatsuya Mizuno, Hiroki Hashimoto, Mitsuru Ueda
  • Publication number: 20110037557
    Abstract: A multilayer coil component includes internal conductors made of silver (Ag) having metal films provided on surfaces thereof to suppress migration of Ag contained in the internal conductors and/or relieve internal stress between magnetic ceramic layers and internal conductor layers without forming gaps at interfaces between the internal conductors including the metal films and a magnetic ceramic surrounding the internal conductors and the interfaces between the internal conductors and the magnetic ceramic. In a manufacturing method for forming a multilayer coil, an acidic solution containing a metal is allowed to penetrate a magnetic ceramic through side surfaces thereof and side gap sections that are regions between side portions of internal conductors and the side surfaces to reach the interfaces between the internal conductors and a surrounding magnetic ceramic, whereby the metal is deposited on surfaces of the internal conductors.
    Type: Application
    Filed: October 25, 2010
    Publication date: February 17, 2011
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Masaharu KONOUE, Yukio MAEDA, Tatsuya MIZUNO, Hiroki HASHIMOTO, Mitsuru UEDA
  • Publication number: 20100201473
    Abstract: A highly reliable multilayer coil component is provided without forming voids between magnetic ceramic layers and internal conductor layers. According to the multilayer coil component, an internal stress problem is reduced, the direct current resistance is low, and fracture of internal conductors caused by the surge or the like is not likely to occur. An acidic solution is allowed to permeate a magnetic ceramic element from a side surface thereof through a side gap portion which is a region between side portions of the internal conductors and the side surface of the magnetic ceramic element and to reach interfaces between the internal conductors and a magnetic ceramic located therearound. A pore area ratio of the magnetic ceramic of the side gap portion which is located between the side portions of the internal conductors and the side surface of the magnetic ceramic element is set in the range of 6% to 28%.
    Type: Application
    Filed: March 8, 2010
    Publication date: August 12, 2010
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Masaharu KONOUE, Yukio MAEDA, Tatsuya MIZUNO, Hiroki HASHIMOTO, Mitsuru UEDA
  • Patent number: 7569335
    Abstract: There is provided a photosensitive resin composition for forming an optical waveguide which has high shape precision and excellent transmission characteristics under high temperature and high humidity. A composition of the present invention contains (A) a polymer having structures represented by the following general formulae (I) and (2) (in the formulae, each of R1 and R2 is independently a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; R3 is an organic group containing a radical-polymerizable reactive group; X is a single bond or a bivalent organic group; and Y is a non-polymerizable organic group), (B) a compound having at least one ethylenic unsaturated group in the molecule thereof, having a molecular weight below 1,000 and having a boiling point of at least 130° C. at 0.1 MPa, and (C) a photoradical polymerization initiator.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: August 4, 2009
    Assignee: JSR Corporation
    Inventors: Yukio Maeda, Yuuichi Eriyama
  • Publication number: 20080145016
    Abstract: There is provided a photosensitive resin composition for forming an optical waveguide which has high shape precision and excellent transmission characteristics under high temperature and high humidity. A composition of the present invention contains (A) a polymer having structures represented by the following general formulae (1) and (2) (in the formulae, each of R1 and R2 is independently a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; R3 is an organic group containing a radical-polymerizable reactive group; X is a single bond or a bivalent organic group; and Y is a non-polymerizable organic group), (B) a compound having at least one ethylenic unsaturated group in the molecule thereof, having a molecular weight below 1,000 and having a boiling point of at least 130° C. at 0.1 MPa, and (C) a photoradical polymerization initiator.
    Type: Application
    Filed: February 19, 2008
    Publication date: June 19, 2008
    Applicant: JSR Corporation
    Inventors: Yukio MAEDA, Yuuichi Eriyama
  • Patent number: 7352943
    Abstract: An optical position sensing component includes an input light guiding portion and a received light guiding portion. The input light guiding portion is constituted by a polymer waveguide and inputs a light emitted from a near-infrared light-emitting source and outputs the light to a lens for collimate through a plurality of ends. The received light guiding portion is constituted by a polymer waveguide and inputs the light output from the light guiding portion and outputs the input light to a near-infrared light-receiving device. Further, the polymer waveguide has a core portion composed of a cured photosensitive resin composition.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: April 1, 2008
    Assignee: JSR Corporation
    Inventors: Yuichi Eriyama, Jun Huangfu, Yukio Maeda
  • Publication number: 20070189700
    Abstract: An optical position sensing component includes an input light guiding portion and a received light guiding portion. The input light guiding portion is constituted by a polymer waveguide and inputs a light emitted from a near-infrared light-emitting source and outputs the light to a lens for collimate through a plurality of ends. The received light guiding portion is constituted by a polymer waveguide and inputs the light output from the light guiding portion and outputs the input light to a near-infrared light-receiving device. Further, the polymer waveguide has a core portion composed of a cured photosensitive resin composition.
    Type: Application
    Filed: February 6, 2007
    Publication date: August 16, 2007
    Applicant: JSR CORPORATION
    Inventors: Yuichi Eriyama, Jun Huangfu, Yukio Maeda
  • Publication number: 20070081782
    Abstract: A radiation-sensitive resin composition for optical waveguides having high dimensional accuracy, good transmission characteristics, and excellent bending resistance is provided. The composition comprises: (A) a poly(meth)acrylate having a repeating unit represented by the following general formula (1) (in the formula, R1 is a hydrogen atom or a methyl group, R3 is a (meth)acryloyl group, X is a bivalent organic group); (B) an urethane (meth)acrylate compound which is a reaction product of a polyester polyol compound, a polyisocyanate compound, and a (meth) acrylate having a hydroxyl group; (C) a compound having at least one ethylenically unsaturated group and having a boiling point of 130 degree C. or higher under 0.1 MPa other than components (A) and (B); and (D) a photo-radical polymerization initiator. The composition was used as the material for the lower clad layer 12 of the optical waveguide 24, and the like.
    Type: Application
    Filed: September 21, 2006
    Publication date: April 12, 2007
    Applicant: JSR Corporation
    Inventors: Yukio Maeda, Yuuichi Eriyama
  • Patent number: RE45645
    Abstract: A highly reliable multilayer coil component is provided without forming voids between magnetic ceramic layers and internal conductor layers. According to the multilayer coil component, an internal stress problem is reduced, the direct current resistance is low, and fracture of internal conductors caused by the surge or the like is not likely to occur. An acidic solution is allowed to permeate a magnetic ceramic element from a side surface thereof through a side gap portion which is a region between side portions of the internal conductors and the side surface of the magnetic ceramic element and to reach interfaces between the internal conductors and a magnetic ceramic located therearound. A pore area ratio of the magnetic ceramic of the side gap portion which is located between the side portions of the internal conductors and the side surface of the magnetic ceramic element is set in the range of 6% to 28%.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: August 4, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masaharu Konoue, Yukio Maeda, Tatsuya Mizuno, Hiroki Hashimoto, Mitsuru Ueda
  • Patent number: RE46353
    Abstract: A highly reliable multilayer coil component is provided without forming voids between magnetic ceramic layers and internal conductor layers. According to the multilayer coil component, an internal stress problem is reduced, the direct current resistance is low, and fracture of internal conductors caused by the surge or the like is not likely to occur. An acidic solution is allowed to permeate a magnetic ceramic element from a side surface thereof through a side gap portion which is a region between side portions of the internal conductors and the side surface of the magnetic ceramic element and to reach interfaces between the internal conductors and a magnetic ceramic located therearound. A pore area ratio of the magnetic ceramic of the side gap portion which is located between the side portions of the internal conductors and the side surface of the magnetic ceramic element is set in the range of 6% to 28%.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: March 28, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masaharu Konoue, Yukio Maeda, Tatsuya Mizuno, Hiroki Hashimoto, Mitsuru Ueda