Patents by Inventor Yasuhiro Yamamoto

Yasuhiro Yamamoto 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).

  • SLURRY CONTAINING DISPERSED ACETYLENE BLACK, AND LITHIUM-ION SECONDARY BATTERY
    Publication number: 20150311533
    Abstract: [Problem] Provided is a production method of a coating composition for electrode, which is able to determine suitable conditions in a dispersion step of an electrode slurry for positive electrode for lithium ion battery, in terms of numerical values, and to enhance performances of the resulting battery. [Solution] A production method of an electrode slurry for positive electrode for lithium ion secondary battery, including kneading at least a carbon material as an electroconductive material and a solvent into a dispersion, is disclosed. As for the carbon material-dispersed slurry, its alternating current impedance value immediately after the dispersion is controlled to a prescribed numerical value.
    Type: Application
    Filed: September 13, 2013
    Publication date: October 29, 2015
    Applicant: MIKUNI SHIKISO KABUSHIKI KAISHA
    Inventors: Kazuhiro TACHIBANA, Taizou HARUYAMA, Takuya KITAGAWA, Naoya KAWAMURA, Yasuhiro YAMAMOTO
  • Fluid dynamic bearing device and assembly method for same
    Patent number: 9154012
    Abstract: Providing a fluid dynamic bearing device, wherein the outer member comprises a member formed by a pressing process on a plate member, the radial bearing surface and at least the one of the thrust bearing surfaces of the outer member being formed by the pressing process, and wherein at least a part of the inner member, which forms the radial bearing surface and the thrust bearing surfaces of the inner member, is made of a sintered metal.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: October 6, 2015
    Assignee: NTN CORPORATION
    Inventors: Masaharu Hori, Jun Hirade, Tatsuya Hayashi, Yasuhiro Yamamoto, Natsuhiko Mori, Fuminori Satoji, Toshiaki Niwa, Tetsuya Kurimura, Kimihiko Bito
  • FLUID DYNAMIC BEARING DEVICE AND MOTOR WITH SAME
    Publication number: 20150233417
    Abstract: A fluid dynamic bearing device including: a bearing sleeve fixed to an inner periphery of a housing; a shaft member removably inserted along an inner periphery of the bearing sleeve; an annular member having an inner peripheral surface for defining a radial gap together with an outer peripheral surface of the shaft member; and radial bearing portions and a thrust bearing portion for supporting the shaft member. At least the radial bearing gap at each of the radial bearing portions, and a bottom gap having the thrust bearing portion received therein are filled with lubricating oil. A void section is formed in an interior space of the housing. Assuming that d1 represents a gap width of the radial bearing gap and d2 represents a gap width of the radial gap, a relationship of 30d1?d2?250d1 is satisfied.
    Type: Application
    Filed: August 19, 2013
    Publication date: August 20, 2015
    Applicant: NTN CORPORATION
    Inventors: Shinji Komatsubara, Tetsuya Kurimura, Yasuhiro Yamamoto
  • REAGENT SET AND REAGENT CONTAINER PACKING BOX
    Publication number: 20150118125
    Abstract: Disclosed is a reagent set, including a boxy body; an internal holding member arranged in the box body to form a container accommodating region in the box body; and a reagent container, arranged in the container accommodating region, and including a main body portion and a mouth portion formed on an upper surface of the main body portion.
    Type: Application
    Filed: October 23, 2014
    Publication date: April 30, 2015
    Inventors: Fuminari HASEGAWA, Hiroyuki OHASHI, Shuji NAGAI, Ryo OOKUBO, Yasuhiro YAMAMOTO
  • Tubular threaded joint having improved high torque performance
    Patent number: 8991870
    Abstract: A lubricating coating which can prevent the occurrence of galling even when makeup is carried out with a high torque and which has excellent rust preventing properties is formed on the contact surfaces of a pin and/or a box of a tubular threaded joint. The lubricating coating contains copolymer particles made from particles of an acrylic-silicone copolymer with an average particle diameter of 10-50 ?m dispersed in a highly viscous matrix made from a mixture of a rosin-based substance selected from rosin and its derivatives, wax, a metal soap, and a basic metal salt of an aromatic organic acid (such as highly basic Ca sulfonate).
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: March 31, 2015
    Assignees: Nippon Steel & Sumitomo Metal Corporation, Vallourec Oil and Gas France
    Inventors: Kunio Goto, Yasuhiro Yamamoto
  • Child seat attachment structure
    Patent number: 8991918
    Abstract: A child seat attachment structure comprising a lower anchor comprising a fixing portion that is fixed to a configuration member configuring a vehicle body or a vehicle seat, a leg portion that extends from the fixing portion towards a vehicle top side, and a coupling portion that is provided at an upper end portion of the leg portion and that fixes a child seat to the vehicle body or the vehicle seat by connecting to a connector of the child seat; and a contacted portion that restricts displacement of the coupling portion of the lower anchor towards a vehicle front side with respect to the fixing portion by making contact with a portion of the lower anchor when the child seat fixed to the vehicle body or the vehicle seat has moved towards the vehicle front side.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: March 31, 2015
    Assignee: NHK Spring Co., Ltd.
    Inventors: Takeshi Nakakita, Shoji Yamamoto, Yasuhiro Yamamoto
  • BOX DETECTOR FOR A THREADED JOINT FOR PIPES
    Publication number: 20140352837
    Abstract: A box protector 21 for protecting the inner surface of a box 11 of a threaded joint for pipes having a female threaded portion and a shoulder surface 14 with the shoulder surface being sloped by an angle ? with respect to the direction perpendicular to the pipe axis has a male threaded portion 22 which threadingly engages with at least a portion of the complete threads of the female threaded portion of the box and a shoulder surface 21b which sealingly contacts the shoulder surface 14 of the box to form a first seal portion, and the shoulder surface 21b is sloped by an angle ?P (?P>?) with respect to the direction perpendicular to the pipe axis. The protector has a circumferential groove 30 in its outer peripheral surface in the vicinity of the shoulder surface 21b and an elastic seal ring 28 which contacts the shoulder surface 14 of the box 11 and forms a second seal portion.
    Type: Application
    Filed: January 17, 2013
    Publication date: December 4, 2014
    Inventors: Yasuhiro Yamamoto, David W. Clem
  • Fluid dynamic bearing device
    Patent number: 8876386
    Abstract: A fluid dynamic bearing device which can exhibit high bearing performance is provided at low costs by forming a highly accurate bearing gap. At least a region in the outer circumferential surface of a shaft which faces the radial bearing gap is constituted of an electroformed part, and the region of the shaft excluding the electroformed part is constituted of a resin portion.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: November 4, 2014
    Assignee: NTN Corporation
    Inventors: Kenji Hibi, Kenji Ito, Yasuhiro Yamamoto, Hiroshi Niwa, Isao Komori, Tetsuya Yamamoto
  • TUBULAR THREADED JOINT HAVING IMPROVED HIGH TORQUE PERFORMANCE
    Publication number: 20140284919
    Abstract: A tubular threaded joint is constituted by a pin and a box each having a contact surface comprising an unthreaded metal contact portion including a seal portion and a shoulder portion and a threaded portion. Of the contact surface of at least one of the pin and the box, the surfaces of the seal portion and the shoulder portion has a first lubricating coating in the form of a solid lubricating coating, and the surface of the threaded portion or the entire surface of the contact surface has a second lubricating coating selected from a viscous liquid lubricating coating and a solid lubricating coating. The first lubricating coating has a coefficient of friction which is higher than that of the second lubricating coating, and the second lubricating coating is positioned on top in a portion where both the first lubricating coating and the second lubricating coating are present.
    Type: Application
    Filed: November 16, 2012
    Publication date: September 25, 2014
    Applicant: VALLOUREC OIL AND GAS FRANCE
    Inventors: Kunio Goto, Yuji Tanaka, Yasuhiro Yamamoto
  • Test apparatus for a threaded joint for oil country tubular goods
    Patent number: 8800381
    Abstract: An apparatus 1 for evaluating the performance of a threaded joint for oil country tubular goods using a first steel pipe P1 and a second steel pipe P2 has a base 2 which holds a first steel pipe P1 in an upright position with an upper end of the first steel pipe P1 extending above the base and the remainder partly disposed under ground. A support member 3 mounted on the base 2 extends alongside the first steel pipe P1. A second steel pipe P2 is suspended above the first steel pipe P1 by a suspending mechanism 4. A threaded joint can be connected and disconnected by first and second tongs 5 and 6 which rotate the second steel pipe P2 with respect to the first steel pipe P1. A stabilizer 7 mounted on the support member 3 can limit the radius of gyration of the second steel pipe P2.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: August 12, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Chiaki Akamatsu, Yasuhiro Yamamoto, Shigeo Nagasaku
  • FLUID DYNAMIC BEARING DEVICE
    Publication number: 20140126846
    Abstract: A shaft side sealing surface (2a2) provided to an outer peripheral surface of a shaft member (2a) and a bearing side sealing surface (9a) provided to an inner peripheral surface of a bearing member (11) (sealing portion (9)) each has a tapered surface that radially shrinks toward an open-to-air side. In addition, the bearing side sealing surface (9a) has a minimum diameter (r4) set to be larger than a maximum diameter (r5) of the shaft side sealing surface (2a2).
    Type: Application
    Filed: March 22, 2012
    Publication date: May 8, 2014
    Applicant: NTN CORPORATION
    Inventors: Tetsuya Kurimura, Kazuyuki Shiozawa, Yasuhiro Yamamoto
  • Digital camera
    Patent number: 8692923
    Abstract: A digital camera is provided that includes a first wireless communication module and image data processor. The first wireless communication module transmits image data to a monitor device via wireless communication. The image data processor processes image data before transmitting it to the monitor device via the wireless communication module. The image data processor has a first mode in which the image data are compressed at a predetermined compression ratio when transmitting a through-the-lens image to the monitor device, and a second mode in which the image data are compressed less than the predetermined compression, including zero compression, while carrying out at least one of reducing a frame rate compared to the first mode or extracting part of an image comprising the image data.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: April 8, 2014
    Assignee: Pentax Ricoh Imaging Company, Ltd.
    Inventor: Yasuhiro Yamamoto
  • Imager capturing an image with a rolling shutter using flicker detection
    Patent number: 8681263
    Abstract: An imager is provided having an image-capturing sensor, a focusing detector, and a flicker detector. The image-capturing sensor captures a subject image with a rolling shutter and outputs image data. The focusing detector determines whether a subject image is in focus of the image-capturing sensor using the output image data. The flicker detector detects a flicker in the output image data. The focusing detector uses horizontal data without vertical data from the image data so as to determine whether a subject image is in focus, when the flicker detector detects a flicker.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: March 25, 2014
    Assignee: Ricoh Imaging Company, Ltd
    Inventor: Yasuhiro Yamamoto
  • Microporous film
    Patent number: 8669002
    Abstract: To provide a thermoplastic resin microporous film being difficult in longitudinal tearing and excellent in tear resistance; a microporous film comprising a thermoplastic resin, wherein a melt flow rate of the thermoplastic resin in the microporous film is in the range of 0.1 to 2.0 g/10 min, tensile strength in a cross-machine direction is in the range of 5 to 10 MPa and tensile elongation in the cross-machine direction is 300% or more.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: March 11, 2014
    Assignees: JNC Corporation, JNC Petrochemical Corporation
    Inventors: Yasuhiro Yamamoto, Hitoshi Satou, Kazuyuki Fukudome
  • Method of controlling power conversion device
    Patent number: 8659918
    Abstract: A correction-term adder 1 compares a maximum value max(V*) with an absolute value of a minimum value min(V*). The correction-term adder 1 selects a signal 1?max(V*) when the maximum value max(V*) is larger than the absolute value of the minimum value min(V*), on the other hand, selects a signal ?1?min(V*) when the absolute value of the minimum value min(V*) is larger than the maximum value max(V*). Thereby, a signal of correction amount ? is calculated. Moreover, the correction-term adder 1 produces a triangular-wave-shaped signal k(max(V*)+min(V*)) by multiplying a gain k by an addition signal max(V*)+min(V*) of the maximum value max(V*) and the minimum value min(V*). This triangular-wave-shaped signal k(max(V*)+min(V*)) is synchronized with the correction amount ?.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: February 25, 2014
    Assignee: Meidensha Corporation
    Inventors: Masakazu Muneshima, Yasuhiro Yamamoto, Yu Sasaki, Takuya Sugai, Akira Shigaki
  • Protector for tubular threaded joint
    Patent number: 8622091
    Abstract: A protector which prevents damage to a solid lubricating coating on a threaded portion of a threaded joint when the protector is mounted on a pin or a box of a threaded joint for pipes in which at least one of the pin or the box is lubricated with a solid lubricating coating comprises a tubular member having a threaded portion on its inner or outer peripheral surface which threadingly engages with at least a portion and preferably 3-5 complete threads of the threaded portion provided on the pin or the box to be protected. The thread height H1 of the threaded portion of the protector and the thread height H2 of the complete thread of the pin or the box on which the protector is mounted satisfy H1>H2, and the difference between H1 and H2 [=H1?H2] is larger than the maximum coating thickness at the thread crest of the solid lubricating coating which covers the threaded portion of the pin or the box.
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: January 7, 2014
    Assignees: Nippon Steel & Sumitomo Metal Corporation, Drilltec Patents & Technologies Company, Inc.
    Inventors: Yasuhiro Yamamoto, Shigeo Nagasaku, David W. Clem
  • TUBULAR THREADED JOINT HAVING IMPROVED HIGH TORQUE PERFORMANCE
    Publication number: 20130276294
    Abstract: A lubricating coating which can prevent the occurrence of galling even when makeup is carried out with a high torque and which has excellent rust preventing properties is formed on the contact surfaces of a pin and/or a box of a tubular threaded joint. The lubricating coating contains copolymer particles made from particles of an acrylic-silicone copolymer with an average particle diameter of 10-50 ?m dispersed in a highly viscous matrix made from a mixture of a rosin-based substance selected from rosin and its derivatives, wax, a metal soap, and a basic metal salt of an aromatic organic acid (such as highly basic Ca sulfonate).
    Type: Application
    Filed: November 4, 2011
    Publication date: October 24, 2013
    Applicants: VALLOUREC MANNESMANN OIL & GAS FRANCE, NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kunio Goto, Yasuhiro Yamamoto
  • Connector
    Patent number: D704642
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: May 13, 2014
    Assignee: Ever Win International Corporation
    Inventor: Yasuhiro Yamamoto
  • Remote control
    Patent number: D716268
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: October 28, 2014
    Assignee: Ever Win International Corporation
    Inventor: Yasuhiro Yamamoto
  • Pair of headphones
    Patent number: D716273
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: October 28, 2014
    Assignee: Ever Win International Corporation
    Inventor: Yasuhiro Yamamoto