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).

  • Tubular threaded joint having improved high torque performance
    Patent number: 9752710
    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: Grant
    Filed: November 16, 2012
    Date of Patent: September 5, 2017
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, VALLOUREC OIL AND GAS FRANCE
    Inventors: Kunio Goto, Yuji Tanaka, Yasuhiro Yamamoto
  • MICROPOROUS MEMBRANE ROLL FOR BATTERY SEPARATORS AND METHOD FOR PRODUCING SAME
    Publication number: 20170194611
    Abstract: A display means with which no unevenness is caused on a surface of a separator material in a microporous film roll for a battery separator is described. Microporous film roll (1) for the battery separator according to the invention has indicator part (18) different in optical characteristics therefrom in microporous film (3) for the battery separator. Moreover, a method for producing microporous film roll (1) for the battery separator according to the invention has features of providing indicator part (18) different in light shieldability or light reflectivity therefrom in microporous film (3) for the battery separator.
    Type: Application
    Filed: July 15, 2015
    Publication date: July 6, 2017
    Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Kouichi HONDA, Yasuhiro YAMAMOTO, Shuichi GOTO
  • INTERNAL COMBUSTION ENGINE
    Publication number: 20170067390
    Abstract: An intake port of an internal combustion engine is connected to a combustion chamber and includes a connecting portion having a passage cross-sectional area that increases as the connecting portion approaches the combustion chamber, and an upstream portion connected to an upstream end of the connecting portion. The connecting portion is provided at its downstream end with a valve seat with which an umbrella part of an intake valve is brought into contact. At least one recess extending in an extending direction of the intake port and included in the connecting portion and the upstream portion is provided at least at one of two portions, the two portions located on both sides in an extending direction of an output shaft, of a peripheral surface of the intake port.
    Type: Application
    Filed: September 6, 2016
    Publication date: March 9, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro YAMAMOTO, Taketo NAGASAKI, Yosuke MIYAMOTO, Naoyuki MIYARA, Hajime TAKAGAWA
  • Photographing apparatus and photographing control system
    Patent number: 9588400
    Abstract: An optimum low-pass filter effect according to various photographing condition parameters related to photographing conditions is obtained with flexibility without forcing the user to perform a troublesome manual operation in a photographing apparatus which drives an image sensor to obtain an optical low-pass filter effect. The photographing condition parameter setters set parameters related to photographing conditions. The image sensor drive controller changes the drive range of the image sensor and the optical low-pass filter effect, which are defined by the image sensor driver, based on the photographing condition parameters set by the photographing condition parameter setters.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: March 7, 2017
    Assignee: RICOH IMAGING COMPANY, LTD.
    Inventor: Yasuhiro Yamamoto
  • Photographing apparatus and photographing control system
    Patent number: 9584727
    Abstract: In a photographing apparatus and a photographing control system, an image sensor drive controller drives an image sensor in a direction which is different from the direction of an optical axis of a photographing optical system via an electromagnetic drive system in accordance with a first drive signal, which is generated by a first drive signal generator, and a second drive signal, which is generated by a second drive signal, during a period of exposure of the image sensor, and drives the image sensor in the direction which is different from the direction of the optical axis of the photographing optical system via the electromagnetic drive system in accordance with the first drive signal, which is generated by the first drive signal generator, during the period of signal readout of the image sensor.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: February 28, 2017
    Assignee: RICOH IMAGING COMPANY, LTD.
    Inventor: Yasuhiro Yamamoto
  • WEAR-RESISTANT COPPER-BASED ALLOY, CLADDING ALLOY, CLADDING LAYER, AND VALVE SYSTEM MEMBER AND SLIDING MEMBER FOR INTERNAL COMBUSTION ENGINE
    Publication number: 20170037495
    Abstract: A wear-resistant copper-based alloy includes: at least one selected from the group made of molybdenum, tungsten, and vanadium and niobium carbide; chromium in an amount of less than 1.0% in terms of wt %; and a matrix and hard particles dispersed in the matrix, in which the hard particles include niobium carbide and at least one selected from the group made of Nb—C—Mo, Nb—C—W, and Nb—C—V around the niobium carbide.
    Type: Application
    Filed: August 8, 2016
    Publication date: February 9, 2017
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Minoru KAWASAKI, Nobuyuki SHINOHARA, Takehisa FUJITA, Hironori AOYAMA, Yasuhiro YAMAMOTO, Tadashi OSHIMA, Hajime KATO, Kouji TANAKA, Takashi SAITO
  • Box protector for a threaded joint for pipes
    Patent number: 9523458
    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: Grant
    Filed: January 17, 2013
    Date of Patent: December 20, 2016
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, DRILLTEC PATENTS & TECHNOLOGIES CORPORATION
    Inventors: Yasuhiro Yamamoto, David W. Clem
  • INTERNAL COMBUSTION ENGINE
    Publication number: 20160348608
    Abstract: An internal combustion engine includes a cylinder head including an intake port, an exhaust port, a water jacket, an intake valve, an exhaust valve, an intake valve seat, and an exhaust valve seat. The water jacket is positioned between the intake port and the exhaust port. The intake valve includes an intake valve head, and the exhaust valve includes an exhaust valve head. The intake valve contacts an intake valve seat surface of the intake valve seat. The exhaust valve head contacts an exhaust valve seat surface of the exhaust valve seat. The shortest distance between the water jacket and the intake valve seat surface is shorter than the shortest distance between the water jacket and the exhaust valve seat surface.
    Type: Application
    Filed: May 27, 2016
    Publication date: December 1, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro YAMAMOTO, Takehisa FUJITA, Naoyuki MIYARA, Hajime TAKAGAWA, Eiichi HIOKA
  • Fluid dynamic bearing device and motor with same
    Patent number: 9476449
    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: Grant
    Filed: August 19, 2013
    Date of Patent: October 25, 2016
    Assignee: NTN CORPORATION
    Inventors: Shinji Komatsubara, Tetsuya Kurimura, Yasuhiro Yamamoto
  • TIGHTENING TOOL
    Publication number: 20160279770
    Abstract: A tightening tool such as a torque wrench is provided in which electric power can be fed to an electronic circuit with eliminating the need for a battery and achieving daily maintenance-free. In the tightening tool, when a tightening torque has reached a set torque value and a torque limiter is actuated, an electronic circuit unit that has obtained a detection signal outputted from a torque limiter actuation detection unit outputs a tightening completion signal. The tightening tool has a power generation unit for feeding electric power to the electronic circuit unit at least during the actuation of the torque limiter. The power generation unit performs photovoltaic power generation, electromagnetic induction power generation, power generation by conversion from mechanical energy into electrical energy, or temperature difference power generation.
    Type: Application
    Filed: January 21, 2015
    Publication date: September 29, 2016
    Applicant: TOHNICHI MFG. CO., LTD.
    Inventors: Tetsuya YOKOYAMA, Yasuhiro YAMAMOTO, Tomohiro OGATA, Satoshi TAKAKU
  • Photographing apparatus and photographing control system with low-pass filter effect
    Patent number: 9451168
    Abstract: In a photographing apparatus and a photographing control system which drive an image sensor (moving member) to obtain an optical low-pass filter effect, an exposure time setter sets an exposure time; a drive cycle setter sets the drive cycle of the moving member so that the exposure time, which is set by the exposure time setter, becomes an integer multiple of the drive cycle; a moving member drive controller drives the moving member and controls the operation thereof via the moving member driver so that the moving member traces a predetermined path an integer number of times in a plane orthogonal to an optical axis within the exposure time, which is set by the exposure time setter, based on the drive cycle, which is set by the drive cycle setter.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: September 20, 2016
    Assignee: RICOH IMAGING COMPANY, LTD.
    Inventor: Yasuhiro Yamamoto
  • Acoustically tunable headphones
    Patent number: 9426555
    Abstract: The acoustically tunable headphones comprises of a flexible headband with a speaker housing affixed on either end of the flexible headband. The speaker housing encloses one or more speakers behind a grill with multiple openings. A soft and flexible ear pad is removably affixed in front of the grill. A corresponding grill with corresponding openings is affixed in the ear pad. By rotating the ear pad to various positions and repositioning the grills openings, the acoustics of the headphones may be adjusted.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: August 23, 2016
    Assignee: Ever Win International Corporation
    Inventor: Yasuhiro Yamamoto
  • Acoustically Tunable Headphones
    Publication number: 20160182990
    Abstract: The acoustically tunable headphones comprises of a flexible headband with a speaker housing affixed on either end of the flexible headband. The speaker housing encloses one or more speakers behind a grill with multiple openings. A soft and flexible ear pad is removably affixed in front of the grill. A corresponding grill with corresponding openings is affixed in the ear pad. By rotating the ear pad to various positions and repositioning the grills openings, the acoustics of the headphones may be adjusted.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 23, 2016
    Applicant: Ever Win International Corporation
    Inventor: Yasuhiro Yamamoto
  • Reagent set and reagent container packing box
    Patent number: 9308531
    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: Grant
    Filed: October 23, 2014
    Date of Patent: April 12, 2016
    Assignee: SYSMEX CORPORATION
    Inventors: Fuminari Hasegawa, Hiroyuki Ohashi, Shuji Nagai, Ryo Ookubo, Yasuhiro Yamamoto
  • PHOTOGRAPHING APPARATUS AND PHOTOGRAPHING CONTROL SYSTEM
    Publication number: 20160094767
    Abstract: In a photographing apparatus and a photographing control system, an image sensor drive controller drives an image sensor in a direction which is different from the direction of an optical axis of a photographing optical system via an electromagnetic drive system in accordance with a first drive signal, which is generated by a first drive signal generator, and a second drive signal, which is generated by a second drive signal, during a period of exposure of the image sensor, and drives the image sensor in the direction which is different from the direction of the optical axis of the photographing optical system via the electromagnetic drive system in accordance with the first drive signal, which is generated by the first drive signal generator, during the period of signal readout of the image sensor.
    Type: Application
    Filed: May 8, 2014
    Publication date: March 31, 2016
    Applicant: RICOH IMAGING COMPANY, LTD.
    Inventor: Yasuhiro YAMAMOTO
  • FLUID DYNAMIC BEARING DEVICE AND MOTOR PROVIDED WITH SAME
    Publication number: 20160040712
    Abstract: Provided is a fluid dynamic bearing device (1) including a rotary body (2A), a bearing member (22) (sleeve portion) made of a sintered metal arranged on the rotary body (2A), having end surfaces (22b, 22c), a thrust bearing gap formed by a lower end surface (22c) of the bearing member (22), filled with lubricating oil (11), and a thrust dynamic pressure generating portion (B). A dynamic pressure generating action is caused in the lubricating oil in the thrust bearing gap along with rotation of the rotary body (2A) to support the rotary body (2A) in one thrust direction in a non-contact manner. The bearing member (22) has an oil permeability of 4% or more with respect to a mass flow rate of the lubricating oil (11) flowing along the thrust dynamic pressure generating portion (B) during the rotation of the rotary body (2A).
    Type: Application
    Filed: February 19, 2014
    Publication date: February 11, 2016
    Applicant: NTN CORPORATION
    Inventors: Shinji KOMATSUBARA, Tetsuya KURIMURA, Yasuhiro YAMAMOTO
  • PHOTOGRAPHING APPARATUS AND PHOTOGRAPHING CONTROL SYSTEM
    Publication number: 20160026068
    Abstract: An optimum low-pass filter effect according to various photographing condition parameters related to photographing conditions is obtained with flexibility without forcing the user to perform a troublesome manual operation in a photographing apparatus which drives an image sensor to obtain an optical low-pass filter effect. The photographing condition parameter setters set parameters related to photographing conditions. The image sensor drive controller changes the drive range of the image sensor and the optical low-pass filter effect, which are defined by the image sensor driver, based on the photographing condition parameters set by the photographing condition parameter setters.
    Type: Application
    Filed: March 3, 2014
    Publication date: January 28, 2016
    Applicant: RICOH IMAGING COMPANY, LTD.
    Inventor: Yasuhiro YAMAMOTO
  • PHOTOGRAPHING APPARATUS AND PHOTOGRAPHING CONTROL SYSTEM
    Publication number: 20160006937
    Abstract: In a photographing apparatus and a photographing control system which drive an image sensor (moving member) to obtain an optical low-pass filter effect, an exposure time setter sets an exposure time; a drive cycle setter sets the drive cycle of the moving member so that the exposure time, which is set by the exposure time setter, becomes an integer multiple of the drive cycle; a moving member drive controller drives the moving member and controls the operation thereof via the moving member driver so that the moving member traces a predetermined path an integer number of times in a plane orthogonal to an optical axis within the exposure time, which is set by the exposure time setter, based on the drive cycle, which is set by the drive cycle setter.
    Type: Application
    Filed: March 3, 2014
    Publication date: January 7, 2016
    Applicant: RICOH IMAGING COMPANY, LTD.
    Inventor: Yasuhiro YAMAMOTO
  • 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
  • Reagent set
    Patent number: D765875
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: September 6, 2016
    Assignee: SYSMEX CORPORATION
    Inventors: Fuminari Hasegawa, Hiroyuki Ohashi, Shuji Nagai, Ryo Ookubo, Yasuhiro Yamamoto