Patents by Inventor Hideki Yamada

Hideki Yamada 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: 8708161
    Abstract: This disclosure relates to an anisotropic polyvinylidene fluoride hollow fiber microporous membrane containing a polyvinylidene fluoride resin. The hollow fiber microporous membrane does not include macrovoids, and has mainly a net-like structure. In addition, the hollow fiber microporous membrane has a dense outer layer on an outer surface, and a homogeneous bulk layer that is internally adjacent to the outer layer and has a coarser structure than the outer layer. The porosity of the bulk layer is at least 1.5 times the membrane surface porosity of the outer layer. The dense structure of the outer layer changes substantially discontinuously into the coarse structure of the bulk layer.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: April 29, 2014
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Akihiro Ariji, Hideki Yamada
  • Patent number: 8685588
    Abstract: The present invention provides a membrane electrode assembly that enhances the reliability, mechanical strength, and handling characteristics of a seal in a solid polymer electrolyte fuel cell. The membrane electrode assembly of the present invention comprises a membrane-electrode structure having electrode layers and gas diffusion layers on both sides of a polymer electrolyte membrane, and a resin frame provided in such a manner as to fully enclose the outer periphery of the electrolyte membrane and to enclose at least portions of the outer peripheries of the gas diffusion layers, the resin frame being provided so as to enclose the electrolyte membrane side. The gas diffusion layer and electrode layer on one side are stacked on a surface of the electrolyte membrane so that a surface region of the electrolyte membrane is left exposed. The gas diffusion layer on the opposite side extends all around the outer periphery of the electrolyte membrane.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: April 1, 2014
    Assignee: W. L. Gore & Associates, Co., Ltd.
    Inventors: Hideki Yamada, Youichi Suzuki, Hiroyoshi Fujimoto
  • Publication number: 20130272717
    Abstract: According to one embodiment, a transmission system includes a transmitter and a receiver. The transmitter includes a modulator configured to modulate transmission data at a chip rate to generate a modulation signal, and one or a plurality of light sources configured to emit visible light according to the modulation signal. The receiver includes a light receiver having one or more lines of light receiving elements to receive light in a first range including the visible light; and a demodulator configured to demodulate image data generated according to the light received by the light receiver to generate reception data corresponding to the transmission data. A following equation is satisfied ff<fm where fm is the chip rate, and ff is a frame rate of the light receiver.
    Type: Application
    Filed: February 28, 2013
    Publication date: October 17, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Jun DEGUCHI, Hideaki MAJIMA, Toshiyuki YAMAGISHI, Nau OZAKI, Ichiro SETO, Koji HORISAKI, Masahiro SEKIYA, Hideki YAMADA, Yuki FUJIMURA
  • Publication number: 20130266440
    Abstract: This assembling and disassembling device for a compressor has a substantially cylindrical bundle that is received insertably and removably on an inner circumferential surface of a substantially tubular compressor casing that is mounted horizontally and further includes: a plate-like member that is provided on an axial end portion of the bundle at an opposite side of an insertion direction so as to protrude outward in the radial direction of the bundle and a threaded-rod member that inserts and removes the bundle connected to the plate-like member into and from the compressor casing by being screwed into a threaded hole provided in the plate-like member and being rotated.
    Type: Application
    Filed: July 25, 2011
    Publication date: October 10, 2013
    Inventors: Mitsuhiko Ota, Hideki Yamada
  • Patent number: 8475970
    Abstract: Disclosed is a fluororesin-coated polymer film for reinforcing a polymer electrolyte membrane, wherein the fluororesin-coated polymer film is fabricated by forming on at least one side of a polymer film a coating of a reaction product of (A) a fluorine-containing copolymer composed of a fluoroolefin, a cyclohexyl group-containing acrylic ester, and a hydroxyl group-containing vinyl ether, and (B) a crosslinking agent having two or more isocyanate groups. The polymer film according to the present invention not only exhibits sufficiently high initial adhesion strength, with respect to the polymer electrolyte membrane, but also retains thereafter high adhesion strength in actual operating environments.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: July 2, 2013
    Assignee: W. L. Gore & Associates, Co., Ltd.
    Inventors: Hideki Yamada, Shizu Okazaki, Hiroyoshi Fujimoto
  • Publication number: 20130088389
    Abstract: A use for real-time in RTK positioning is provided, which raises the capacity factor of high precision positioning time. The mask threshold of either an elevation angle mask or signal strength mask is initialized. The satellite signal chosen via this mask threshold performs RTK positioning calculation. The quality check of this positioning solution is performed. When a decision result is good, this positioning solution turns into a high precision positioning solution. When a decision result is bad, other mask thresholds are changed from an initial value. The satellite signal newly chosen via this changed mask threshold performs RTK positioning calculation. The quality check of this positioning solution is performed. When a decision result is good, this positioning solution turns into a high precision positioning solution. A quality check is performed by the Ratio test and a satellite signal also chooses a GLONASS signal automatically with a GPS signal.
    Type: Application
    Filed: April 9, 2012
    Publication date: April 11, 2013
    Inventor: Hideki YAMADA
  • Publication number: 20120228071
    Abstract: A leaf valve structure according to this invention comprises an annular valve seat, and a leaf that is seated on the valve seat under a predetermined elastic supporting force against a pressure of a working fluid on an inner side of the valve seat. A recessed depression portion having an opening portion on both an inner periphery of the valve seat and a seating surface of the leaf is formed in the valve seat, thereby creating a site where the pressure of the working fluid on the inner side of the valve seat can act more easily on a seating surface between the valve seat and the leaf valve. Accordingly, an effect of a surface adsorption force applied to the leaf valve by the valve seat on a cracking pressure can be suppressed, and as a result, the leaf valve can be lifted under a stable cracking pressure.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 13, 2012
    Applicants: FINE SINTER CO., LTD., KAYABA INDUSTRY CO., LTD.
    Inventors: Hideki Yamada, Tomoharu Murakami, Tadashi Oikawa, Tomohito Amino, Yoshinori Nomura
  • Publication number: 20120209639
    Abstract: Systems and methods to provide an availability and price determination, in response to a request for function space, to a user in real-time. For one embodiment, a request for a function space is received at a digital processing system that contains availability information and a set of pricing rules for one or more function spaces. The request includes a plurality of criteria. An availability of the requested function space is determined based upon the availability information and one or more of the criterion. A price for the requested function space is determined based upon the set of pricing rules and one or more of the criterion.
    Type: Application
    Filed: April 25, 2012
    Publication date: August 16, 2012
    Applicant: Oracle International Corporation
    Inventors: Len Chan, Massood Delairi, David McRitchie, Wayne Murphy, Jujhar Singh, Colin K. Toal, Derek Wagland, Bowen Wang, Hideki Yamada
  • Patent number: 8191697
    Abstract: A spring clutch mechanism for transmitting a driving force of a driving part to a driven part, including a first part, a second part, and a spring disposed between the first part and the second part. The first part is connected to the driven part. The second part is connected to the driving part and is rotatable relative to the first part coaxially therewith. The first part has a first end provided with a frusto-conical portion having a first tapered surface, and the second part has a second end formed with a recess provided with a second tapered surface in contact with the first tapered surface. the first part and the second part are aligned linearly and coaxially in a state that the first end is inserted into the second end maintaining contact of the first tapered surface with the second tapered surface.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: June 5, 2012
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Shinichirou Satou, Hideki Yamada, Tsukasa Suzuura
  • Patent number: 8146463
    Abstract: A screw driver capable of avoiding co-rotation of an end bit and a motor in case of sharp shooting the end bit with a groove in a head of a screw. A co-rotation preventing mechanism is engageable with an end bit mounting portion when the end bit mounting portion is at a frontward position to prevent the end bit mounting portion from being rotated in the forward direction and to allow the end bit mounting portion to rotate in the reverse direction. The preventing mechanism is disengageable from the end bit mounting portion when the end bit mounting portion is at the rearward position to allow the end bit mounting portion to rotate in both forward and reverse directions.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: April 3, 2012
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Shinichirou Satou, Hideki Yamada, Tsukasa Suzuura
  • Publication number: 20120021335
    Abstract: The present invention provides a laminate in which a layer containing an ion-exchange resin is combined with a release film which exhibits satisfactory releasability of the layer containing an ion-exchange resin. The laminate according to the present invention is produced by laminating a layer containing an ion-exchange resin on a release film made of a cycloolefinic copolymer.
    Type: Application
    Filed: February 4, 2010
    Publication date: January 26, 2012
    Inventors: Mikimasa Sugioka, Toyohiro Matsuura, Hideki Yamada
  • Publication number: 20110287335
    Abstract: It is an object of the present invention to provide a fuel cell electrolyte membrane reinforced with a porous substrate which has excellent durability and in which the amount of cross leakage as a result of chemical deterioration of electrolyte membrane components due to the presence of peroxide and/or radicals is particularly reduced. The present invention relates to an electrolyte membrane for a fuel cell comprising a polyelectrolyte, which contains a porous substrate and a radical scavenger dispersed in the polyelectrolyte.
    Type: Application
    Filed: October 15, 2009
    Publication date: November 24, 2011
    Applicants: W.L, GORE & ASSOCIATES CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro Akita, Masanori Aimu, Tatsuya Kawahara, Takeshi Nagasawa, Toyohiro Matsuura, Takeyuki Suzuki, Hiroshi Kato, Hideki Yamada
  • Publication number: 20110053042
    Abstract: Disclosed is a fluororesin-coated polymer film for reinforcing a polymer electrolyte membrane, wherein the fluororesin-coated polymer film is fabricated by forming on at least one side of a polymer film a coating of a reaction product of (A) a fluorine-containing copolymer composed of a fluoroolefin, a cyclohexyl group-containing acrylic ester, and a hydroxyl group-containing vinyl ether, and (B) a crosslinking agent having two or more isocyanate groups. The polymer film according to the present invention not only exhibits sufficiently high initial adhesion strength, with respect to the polymer electrolyte membrane, but also retains thereafter high adhesion strength in actual operating environments.
    Type: Application
    Filed: January 15, 2009
    Publication date: March 3, 2011
    Inventors: Hideki Yamada, Shizu Okazaki, Hiroyoshi Fujimoto
  • Publication number: 20110017660
    Abstract: An object of the present invention is to provide a hollow-fiber ultrafiltration membrane that can be used in treatment in various aqueous fluids such as water purification, beverage treatment, seawater clarification, and that has excellent fractionation characteristics and permeability, while deterioration of its performance due to passage of time is minimized, and that has excellent recovery of the membrane-separation characteristics by cleaning. The main feature of the hollow-fiber ultrafiltration membrane of the present invention is that the specific surface area of the membrane surface to which raw water is supplied falls within the range from not less than 1.10 to not greater than 1.55. The present invention also provides a process for producing a hollow-fiber ultrafiltration membrane, wherein a heat treatment is conducted under the condition that the membrane having a residual organic solvent content of not greater than 300 mg/g.
    Type: Application
    Filed: August 20, 2010
    Publication date: January 27, 2011
    Applicant: TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Kenta Kochi, Tsuyoshi Hoshiyama, Hideki Sugihara, Akihiro Ariji, Koichi Baba, Hideki Yamada
  • Publication number: 20100047649
    Abstract: The present invention provides a membrane electrode assembly that enhances the reliability, mechanical strength, and handling characteristics of a seal in a solid polymer electrolyte fuel cell. The membrane electrode assembly of the present invention comprises a membrane-electrode structure having electrode layers and gas diffusion layers on both sides of a polymer electrolyte membrane, and a resin frame provided in such a manner as to fully enclose the outer periphery of the electrolyte membrane and to enclose at least portions of the outer peripheries of the gas diffusion layers, the resin frame being provided so as to enclose the electrolyte membrane side. The gas diffusion layer and electrode layer on one side are stacked on a surface of the electrolyte membrane so that a surface region of the electrolyte membrane is left exposed. The gas diffusion layer on the opposite side extends all around the outer periphery of the electrolyte membrane.
    Type: Application
    Filed: August 2, 2007
    Publication date: February 25, 2010
    Inventors: Hideki Yamada, Youichi Suzuki, Hiroyoshi Fujimoto
  • Patent number: 7628415
    Abstract: A knuckle bracket (1) for a cylinder (20) comprises outer and inner brackets (2, 10). The outer bracket (2) comprises a pair of outer plates (4, 5) projecting in a lateral direction with respect to a cylinder axis. The inner bracket (10) comprises a pair of inner plates (12, 13) overlap the outer plates (4, 5) on the inner side thereof. A guide (17) of having outwardly curved shape is formed on a leading edge (X, Y) of each of the inner plates (12, 13) so as to facilitate introduction of a connecting part (90) of a knuckle bracket (N) into the inner bracket (10). By forming a notch (7) on a leading edge of each of the outer plates (4, 5) to accommodate the guide (17), the size of the knuckle bracket (1) can be suppressed.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: December 8, 2009
    Assignee: Kayaba Industry Co., Ltd.
    Inventors: Kenji Kitamura, Hideki Yamada
  • Publication number: 20090293653
    Abstract: A spring clutch mechanism for transmitting a driving force of a driving part to a driven part, including a first part, a second part, and a spring disposed between the first part and the second part. The first part is connected to the driven part. The second part is connected to the driving part and is rotatable relative to the first part coaxially therewith. The first part has a first end provided with a frusto-conical portion having a first tapered surface, and the second part has a second end formed with a recess provided with a second tapered surface in contact with the first tapered surface. the first part and the second part are aligned linearly and coaxially in a state that the first end is inserted into the second end maintaining contact of the first tapered surface with the second tapered surface.
    Type: Application
    Filed: May 27, 2009
    Publication date: December 3, 2009
    Inventors: Shinichirou Satou, Hideki Yamada, Tsukasa Suzuura
  • Publication number: 20090294145
    Abstract: A screw driver capable of avoiding co-rotation of an end bit and a motor in case of sharp shooting the end bit with a groove in a head of a screw. A co-rotation preventing mechanism is engageable with an end bit mounting portion when the end bit mounting portion is at a frontward position to prevent the end bit mounting portion from being rotated in the forward direction and to allow the end bit mounting portion to rotate in the reverse direction. The preventing mechanism is disengageable from the end bit mounting portion when the end bit mounting portion is at the rearward position to allow the end bit mounting portion to rotate in both forward and reverse directions.
    Type: Application
    Filed: May 27, 2009
    Publication date: December 3, 2009
    Inventors: Shinichirou SATOU, Hideki YAMADA, Tsukasa SUZUURA
  • Publication number: 20090283469
    Abstract: Problems: To provide a polyvinylidene fluoride microporous membrane which has high water permeability and separation performance and is excellent in mechanical and chemical strength; and a process for producing the film. Means for Solving Problems: An anisotropic polyvinylidene fluoride hollow fiber microporous membrane characterized in that the porosity of the cross-sectional bulk layer is higher than the membrane surface porosity of the outer layer and that in the cross section of the membrane, the dense microstructure of the outer surface changes substantially discontinuously into the coarse structure of the bulk layer.
    Type: Application
    Filed: January 10, 2007
    Publication date: November 19, 2009
    Inventors: Akihiro Ariji, Hideki Yamada
  • Patent number: 7399781
    Abstract: The present invention relates to an N-substituted benzothiophenesulfonamide derivative or a pharmaceutically acceptable salt thereof and applications thereof. Furthermore, it provides an agent for preventing or treating cardiac or circulatory disease and so on caused by abnormal increase of production of angiotensin II or endothelin I based on chymase activity, or by activation of mast cell, and an agent for preventing adhesion after surgery, wherein the agent has a selective inhibitory action on chymase.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: July 15, 2008
    Assignee: TOA EIYO Ltd.
    Inventors: Shoji Satoh, Akira Tatsui, Takeshi Hasegawa, Hideki Yamada, Shin-ichi Kazayama, Takahiro Morita, Hidekazu Masaki, Atsuo Takahashi, Fumiya Yoneyama, Tetsuo Kuze, Yusuke Mizuno, Mizuo Miyazaki, Shinji Takai