Patents by Inventor Shigeru Shoji

Shigeru Shoji 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: 8835566
    Abstract: The present invention provides a vulcanized rubber material having improved heat resistance while maintaining ozone resistance of an epihalohydrin rubber, and a rubber composition for vulcanization for producing the same. The invention further provides a vulcanized rubber material and a rubber composition for vulcanization, that can achieve the above objects without using an organonickel compound having a concern about toxicity, or if used, using the same as less as possible. The present invention relates to a rubber composition for vulcanization comprising (a) 100 parts by weight of an epihalohydrin rubber, (b) 0.01 to 0.5 part by weight of a copper salt of dithiocarbamic acid, (c) an acid acceptor, and (d) a polythiol type vulcanizing agent or a polyol type vulcanizing agent, a vulcanized rubber material obtained by vulcanizing the composition, and an automotive rubber part comprising the vulcanized rubber material.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: September 16, 2014
    Assignee: Daiso Co., Ltd.
    Inventors: Shigeru Shoji, Toyofumi Otaka, Toshiyuki Funayama, Yasushi Hamura
  • Patent number: 8492000
    Abstract: Disclosed is a vulcanized rubber laminate in which both an unvulcanized epichlorohydrin-based rubber composition layer containing a specific polyfunctional (meth)acrylate compound and a specific vulcanizing agent and an unvulcanized fluororubber composition layer containing a specific vulcanizing agent are heated and bonded, whereby, both rubber layers are firmly bonded.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: July 23, 2013
    Assignee: Daiso Co., Ltd.
    Inventors: Toshiyuki Funayama, Shigeru Shoji, Toyofumi Otaka
  • Patent number: 8283039
    Abstract: The invention provides a vulcanized rubber laminate obtained by firmly bonding an unvulcanized epichlorohydrin rubber layer and an organic peroxide-containing fluororubber layer. The laminate is obtained by thermal adhesion a layer of an unvulcanized epichlorohydrin rubber composition to a layer of an unvulcanized fluororubber composition. The epichlorohydrin rubber composition comprises 1) an unvulcanized epichlorohydrin rubber containing 3 to 15 mol % of allyl glycidyl ether unit, 2) quinoxaline-based vulcanizing agents, mercaptotriazine-based vulcanizing agents or bisphenol-based vulcanizing agents, and 3) 1,8-diazabicyclo(5,4,0)undecene-7 salts, 1,5-diazabicyclo(4,3,0)nonene-5 salts, quaternary ammonium salts, quaternary phosphonium salts, basic white carbons or an alkaline metal salt of higher fatty acid the fluororubber composition comprises an fluororubber and an organic peroxide-based vulcanizing agent.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: October 9, 2012
    Assignee: Daiso Co., Ltd.
    Inventors: Toshiyuki Funayama, Shigeru Shoji, Yasushi Hamura, Toyofumi Otaka
  • Patent number: 8258222
    Abstract: A composition for epihalohydrin vulcanized rubber excellent in heat resistance while keeping good vulcanization rate and store stability, comprising (a) an epihalohydrin robber, (b) a metal soap, (c) an acid acceptor, and (d) a vulcanizing agent, the composition further preferably containing (e) a fatty acid for suppressing vulcanization, or preferably containing (f) an alcohol for accelerating vulcanization.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: September 4, 2012
    Assignee: Daiso Co., Ltd.
    Inventors: Toyofumi Otaka, Shigeru Shoji, Yasushi Hamura, Toshiyuki Funayama
  • Patent number: 8004064
    Abstract: A thin film capacitor with a trench structure having a base substance and a pair of electrodes provided on the base substance, and a dielectrode provided between the electrodes. The trench pattern is configured to have a first pattern and a second pattern separate from the first pattern. The first pattern having a plurality of protrusions provided upright at predetermined intervals, and the second pattern separate from the first pattern having a plurality of recesses provided at predetermined intervals, are provided at the side of the base substance where the dielectric film is formed. Trenches are each defined by the outer wall of each protrusion and the inner wall of each recess.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: August 23, 2011
    Assignee: TDK Corporation
    Inventor: Shigeru Shoji
  • Publication number: 20110160344
    Abstract: The present invention provides a vulcanized rubber material having improved heat resistance while maintaining ozone resistance of an epihalohydrin rubber, and a rubber composition for vulcanization for producing the same. The invention further provides a vulcanized rubber material and a rubber composition for vulcanization, that can achieve the above objects without using an organonickel compound having a concern about toxicity, or if used, using the same as less as possible. The present invention relates to a rubber composition for vulcanization comprising (a) 100 parts by weight of an epihalohydrin rubber, (b) 0.01 to 0.5 part by weight of a copper salt of dithiocarbamic acid, (c) an acid acceptor, and (d) a polythiol type vulcanizing agent or a polyol type vulcanizing agent, a vulcanized rubber material obtained by vulcanizing the composition, and an automotive rubber part comprising the vulcanized rubber material.
    Type: Application
    Filed: October 26, 2007
    Publication date: June 30, 2011
    Applicant: Daisco Co. Ltd
    Inventors: Shigeru Shoji, Toyofumi Otaka, Toshiyuki Funayama, Yasushi Hamura
  • Patent number: 7969149
    Abstract: A magnetic direction sensor can detect at higher precision the magnitude and direction of a detected magnetic field. The magnetic direction sensor has a measuring section, a storage section and an operating section. The measuring section has first and second MR elements, and detects resistance values of these elements in accordance with an attitude change of the sensor and the presence or absence of a bias magnetic field to be applied through a coil in a direction orthogonal to a magnetization direction of each pinned layer in the first and second MR elements. The storage section stores fixed data invariable in response to a detected magnetic field direction, in resistance values of these elements measured by the measuring section. The operating section calculates a detected magnetic field vector from variable data of resistance values of these elements measured by the measuring section, and fixed data stored in the storage section.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: June 28, 2011
    Assignee: TDK Corporation
    Inventor: Shigeru Shoji
  • Patent number: 7960970
    Abstract: A magnetic sensor having a reduced size and cost is provided. More particularly, the magnetic sensor includes a magnetic field detection chip having a magnetic field detection element for detecting a magnetic field and an output terminal for outputting an output signal from the magnetic field detection element. A substrate has the magnetic field detection chip mounted thereon, and has a connection terminal for being connected to the output terminal of the magnetic field detection chip that is formed on a mount face of the substrate. An output-terminal formed face of the magnetic field detection chip is arranged non-parallel to the mount face of the substrate. More specifically, the output-terminal formed face of the magnetic field detection chip is arranged almost vertical to the mount face of the substrate.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: June 14, 2011
    Assignees: SAE Magnetics (H.K.) Ltd., TDK Corporation
    Inventors: Tamon Kasajima, Shigeru Shoji
  • Patent number: 7909604
    Abstract: Root apex position model data associated with electrical characteristic values between a measurement electrode and a mouth electrode in a state in which the distal end of the measurement electrode is located at a root apex position of a root canal is stored in a storage unit. A power supply applies measurement signals of 500 Hz and 2 kHz between the measurement electrode and the mouth electrode. Two different current values flowing between the measurement electrode and the mouth electrode are detected. These current values are compared with the root apex position mode data stored in the storage unit. If the root apex position data includes any data which coincides with the current values, it is detected that the distal end of the measurement electrode is located at the root apex position.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: March 22, 2011
    Assignee: Toei Electric Co., Ltd.
    Inventors: Shigeru Shoji, Masahiro Otsuka
  • Patent number: 7902811
    Abstract: The present invention provides a current sensor of smaller and simpler configuration, capable of measuring a current to be detected with high precision and stability. A current sensor has a V-shaped conductor line and a pair of magnetoresistive elements disposed along with the conductor line so that a resistance value of one of the magnetoresistive elements changes in a direction opposite to that of resistance-value-change of the other magnetoresistive element according to current magnetic fields produced by a current to be detected flowing through the conductor line.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: March 8, 2011
    Assignee: TDK Corporation
    Inventor: Shigeru Shoji
  • Patent number: 7868435
    Abstract: An adhesive comprises a base material which generates adhesive strength through curing, a hardening agent which promotes the curing of the base material, and a filler. In order to solve the problems mentioned above, the adhesive is made of particles having a maximum particle diameter of 0.8 ?m or less.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: January 11, 2011
    Assignee: TDK Corporation
    Inventors: Masaharu Ishizuka, Shigeru Shoji
  • Patent number: 7868613
    Abstract: First and second MR elements are provided with a plurality of element patterns each having a stacked structure. The stacked structure includes a free layer changing its magnetization direction depending on an external magnetic field, an intermediate layer generating no specific magnetization direction, and a pinned layer having magnetization pinned in a certain direction. The first and the second MR elements have a rotationally symmetrical relationship with each other around a central axis parallel to the directions of anisotropic magnetic fields of the free layer. In the initial condition, the resistance of the first MR element and the resistance of the second MR element are equal to each other. The resistances of the first and the second MR elements exhibit changes in opposite directions in accordance with a magnetic field to be detected. This provides a magnetic sensor permitting higher-precision detection of the magnetic field to be detected.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: January 11, 2011
    Assignee: TDK Corporation
    Inventor: Shigeru Shoji
  • Publication number: 20100297452
    Abstract: Disclosed is a vulcanized rubber laminate in which both an unvulcanized epichlorohydrin-based rubber composition layer containing a specific polyfunctional (meth)acrylate compound and a specific vulcanizing agent and an unvulcanized fluororubber composition layer containing a specific vulcanizing agent are heated and bonded, whereby, both rubber layers are firmly bonded.
    Type: Application
    Filed: January 28, 2009
    Publication date: November 25, 2010
    Applicant: DAISO CO., LTD.
    Inventors: Toshiyuki Funayama, Shigeru Shoji, Toyofumi Otaka
  • Patent number: 7737678
    Abstract: A current sensor capable of detecting current magnetic fields generated by a current to be detected with high precision and stability while realizing a compact configuration is provided. The current sensor includes: a conductor generating a current magnetic field in accordance with supplied current to be detected; a magnetoresistive element including a free layer having a magnetization direction that varies in accordance with the current magnetic field, a pinned layer having the magnetization direction that is pinned to a direction orthogonal to the magnetization direction of the free layer under no current magnetic field, and an intermediate layer provided between the free layer and the pinned layer; and a bias applying means for applying, to the magnetoresistive element, a bias magnetic field along a direction same with the magnetization direction of the free layer under no current magnetic field.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: June 15, 2010
    Assignee: TDK Corporation
    Inventor: Shigeru Shoji
  • Patent number: 7723984
    Abstract: The present invention provides a current sensor of smaller and simpler configuration, capable of measuring a current to be detected with high precision and stability. A magnetic sensor includes: an element substrate including a magnetoresistive element, the magnetoresistive element having a pinned layer with a magnetization pinned to a direction, an intermediate layer, and a free layer whose magnetization direction changes according to an external magnetic field; and a magnetic sheet attached on one side of the element substrate so as to apply a bias magnetic field to the magnetoresistive element.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: May 25, 2010
    Assignee: TDK Corporation
    Inventors: Shigeru Shoji, Masato Takahashi
  • Patent number: 7723983
    Abstract: The present invention provides a current sensor capable of detecting a current magnetic field generated by a current to be detected with high precision and stability while realizing a compact configuration. The current sensor has: first and second magnetoresistive elements each including a pinned layer having a magnetization direction pinned in a predetermined direction, a free layer whose magnetization direction changes according to applied magnetic fields, and an intermediate layer sandwiched between the pinned layer and the free layer; and first and second permanent magnets for applying bias magnetic fields to the first and second magnetoresistive elements. The bias magnetic field has a parallel component parallel to a magnetization direction under no magnetic field and an orthogonal component orthogonal to the parallel component. Consequently, uniaxial anisotropy of the free layer can be enhanced without using shape anisotropy.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: May 25, 2010
    Assignee: TDK Corporation
    Inventor: Shigeru Shoji
  • Patent number: 7679865
    Abstract: A spring member for an acceleration sensor for detecting acceleration in a direction of a Z-axis that is perpendicular to an X-Y plane includes a movable section having a plane plate shape, for fixing a magnetic field generation member with weight of the acceleration sensor, and a single support arm section having a strip shape parallel to a plane of the movable section when no acceleration is applied. One end of the single support arm section is integrally connected to one end of the movable section and the other end of the single support arm section is fixed. Only the single support arm section in a cantilever configuration supports the movable section.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: March 16, 2010
    Assignee: TDK Corporation
    Inventor: Shigeru Shoji
  • Patent number: 7645685
    Abstract: The present invention relates to a method for bonding a first thin plate having a first adhesion surface and a first back surface and a second thin plate having a second adhesion surface and a second back surface by an adhesive, the adhesive being sandwiched between said first adhesion surface and said second adhesion surface.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: January 12, 2010
    Assignee: TDK Corporation
    Inventors: Masaharu Ishizuka, Shigeru Shoji
  • Patent number: 7646196
    Abstract: Provided is a current sensor capable of detecting an induced magnetic field by a current to be detected with higher precision. The first and second modules are provided on facing surfaces of integrated substrates, respectively, with spacers in between. Each of the first and second modules includes an element substrate, and an MR element layer. On each of the MR elements layers, provided is an MR element having a stacked structure including a pinned layer, a nonmagnetic intermediate layer, and a free layer whose magnetization direction changes according to the induced magnetic field and which exhibits an anisotropic field in a direction different from that of the magnetization of the pinned layer. The stacked structures of the MR elements are provided in a same layer level.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: January 12, 2010
    Assignee: TDK Corporation
    Inventor: Shigeru Shoji
  • Patent number: 7589524
    Abstract: The present invention provides a conveying mechanism capable of precisely detecting a conveyance amount of an object to be conveyed with a simple configuration. A head suspension assembly includes a suspension having a pair of attachment parts and an arm extending in a U shape so as to connect the pair of attachment parts to each other and showing elasticity in a Z axis direction, and a magnetic sensor provided on the arm. The arm deflects in the Z axis direction in accordance with the magnitude of an external force pressing the magnetic sensor against a recording surface. Even in the case where the recording surface slightly fluctuates in the Z axis direction at the time of conveying operation, the contact state between the magnetic sensor and the recording surface can be maintained in the range that the arm can deflect. Consequently, magnetic information on the recording surface can be precisely read and the rotation amount of a conveying roller can be detected with high precision.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: September 15, 2009
    Assignee: TDK Corporation
    Inventor: Shigeru Shoji