Patents by Inventor Koichi Taniguchi

Koichi Taniguchi 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).

  • Publication number: 20180059889
    Abstract: A sticky note fixation button display unit (12) displays a sticky note fixation button (81) for switching a sticky note (80) between an attachment position fixed state, in which an attachment position is unchangeable, and an attachment position variable state, in which the attachment position is changeable. A sticky note status switching unit (13) switches the sticky note (80) between the attachment position fixed state and the attachment position variable state according to an operation of contact of a pointer F with the sticky note fixation button (81). An attachment position setting unit (14) changes the attachment position of the sticky note (80) according to a displacement of the pointer F when the sticky note (80) is in the attachment position variable state and keeps the attachment position of the sticky note (80) fixed without changing when the sticky note (80) is in the attachment position fixed state.
    Type: Application
    Filed: October 30, 2015
    Publication date: March 1, 2018
    Inventor: Koichi TANIGUCHI
  • Publication number: 20180059888
    Abstract: When it is detected by a touch position detecting circuit (21) that a pointer F has made a displacement specifying folding of a corner, in a state in which an electronic book browsing screen (40) is displayed on a touch panel display portion (20), a bookmark registering portion (11) changes the display to a display (61) in which the corner is folded and performs bookmark registration of the displayed page. When it is detected by the touch position detecting circuit (21) that the pointer F has made a displacement specifying page feed, in a state in which the bookmark-registered page is displayed on the browsing screen (40), a bookmark feeding portion (12) switches the page to a different bookmark-registered page and displays the page.
    Type: Application
    Filed: October 30, 2015
    Publication date: March 1, 2018
    Inventor: Koichi TANIGUCHI
  • Patent number: 9895765
    Abstract: Resistance spot welding is performed on a combination of overlapping steel sheets including at least one steel sheet that has, on a surface thereof, a coated layer with zinc as a main component, by (1) starting electric current passage in a state satisfying 0.9×t?L?1.1×t; and (2) dividing electric current into main current and initial current that precedes the main current and is two-step current, setting a current value I1 during current in a first step of the initial current to satisfy Im×1.1?I1?15.0 kA with respect to a current value Im during the main current, and setting a current value I2 in the subsequent second step to no current or low current satisfying 0?I2?Im×0.7.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: February 20, 2018
    Assignee: JFE STEEL CORPORATION
    Inventors: Koichi Taniguchi, Yasuaki Okita, Rinsei Ikeda
  • Publication number: 20180043461
    Abstract: A resistance spot welding device for welding at least two overlapping steel sheets held between a pair of welding electrodes is provided. The resistance spot welding device includes the pair of electrodes, an electrode force gauge that measures an electrode force, and a controller that controls an electric current supply to the electrodes according to the electrode force measured by the electrode force gauge. The controller controls the electric current such that the electrode force F measured by the electrode force gauge after the start of the electric current supply is adjusted to a prescribed value.
    Type: Application
    Filed: March 3, 2016
    Publication date: February 15, 2018
    Applicant: JFE STEEL CORPORATION
    Inventors: Koichi Taniguchi, Yasuaki Okita, Rinsei Ikeda
  • Publication number: 20180043466
    Abstract: A friction stir welding apparatus that includes a rotary tool and a heating device. The heating device is placed in front of the rotary tool to heat steel sheets that are used as a workpiece. The rotary tool is moved in the welding direction so that steel sheet is softened by frictional heat. Additionally, the surface temperature, the area, and the position of the heated region during the heating process are strictly controlled. The heating of the steel sheets by the welding apparatus provides sufficient strength and good welding workability by advantageously eliminating plastic flow defects generated due to insufficient heating of workpieces.
    Type: Application
    Filed: March 17, 2016
    Publication date: February 15, 2018
    Applicant: JFE STEEL CORPORATION
    Inventors: Muneo MATSUSHITA, Koichi TANIGUCHI, Rinsei IKEDA
  • Publication number: 20180038402
    Abstract: Provided is a method for resistance spot-welding at least two overlapping steel sheets. When an electrode force F after an electric current supply is started changes from an initial electrode force Fi to an electrode force Fh(1) while a lapse from the start of the electric current supply is between 20 ms and 80 ms inclusive, a suspension of the electric current supply of from 20 ms to 60 ms inclusive is started. Then the electric current supply is resumed when the electrode force F reaches an electrode force Fc(1).
    Type: Application
    Filed: March 3, 2016
    Publication date: February 8, 2018
    Applicant: JFE STEEL CORPORATION
    Inventors: Koichi Taniguchi, Yasuaki Okita, Rinsei Ikeda
  • Publication number: 20180040608
    Abstract: A semiconductor chip including an internal circuit, a plurality of electrode pads and a plurality of I/O cells. The plurality of electrode pads are arranged on a first line, a second line and a third line. Each of the plurality of electrode pads arranged at least on the first and second lines overlaps corresponding one of the plurality of I/O cells in a plan view. The plurality of I/O cells are provided on a peripheral region of the semiconductor chip. Each of the plurality of I/O cells includes a protective circuit, and is connected to corresponding one of the plurality of electrode pads. The protective circuit includes a power source-side protective circuit provided between the corresponding one of the plurality of electrode pads and a power source wiring; and a ground-side protective circuit provided between the corresponding one of the plurality of electrode pads and a ground wiring.
    Type: Application
    Filed: October 2, 2017
    Publication date: February 8, 2018
    Inventors: Koichi TANIGUCHI, Masato MAEDE
  • Publication number: 20180017903
    Abstract: An image forming apparatus includes an image forming unit having a photosensitive member on which an image is formed and a developer bearing member, an intermediate transfer member onto which the image is transferred, a transfer member forming a nip portion for transfer of the image on the photosensitive member onto the intermediate transfer member, a transfer unit transferring the image on the intermediate transfer member onto the sheet, a motor rotating the photosensitive member, a motor control unit controlling the motor so the rotation speed of the photosensitive member is a target rotation speed, and a controller that acquires first and second load information of the photosensitive member in a first period where developer bearing member rotates and a second period where developer bearing member is stopped, and controls whether or not to change the target rotation speed based on the first and second load information.
    Type: Application
    Filed: July 10, 2017
    Publication date: January 18, 2018
    Inventors: Koichi Taniguchi, Jun Nakazato, Jiro Shirakata, Shusuke Miura, Kana Oshima
  • Publication number: 20180017915
    Abstract: When a mechanism enters a first state, an intermediate transfer member separates from a second photosensitive member. When the mechanism enters a second state, the intermediate transfer member contacts the second photosensitive member. When a first monochrome image is formed on a sheet of a first type by using toner of a first color, the mechanism enters the first state. When a second monochrome image is formed on a sheet of a second type by using toner of the first color, the mechanism enters the second state. A rotation speed of the second photosensitive member for forming the second monochrome image on the sheet of the second type is controlled to a predetermined rotation speed. The predetermined rotation speed is slower than a rotation speed of the second photosensitive member for forming the second image.
    Type: Application
    Filed: June 20, 2017
    Publication date: January 18, 2018
    Inventors: Rin Ishikawa, Tadashi Iwakawa, Koichi Taniguchi, Akira Hamano
  • Publication number: 20170351206
    Abstract: Prediction accuracy of a color misregistration amount in an image formation executed in an image forming apparatus is improved. The image forming apparatus comprises an optical box storing an optical system for irradiating a laser beam from a laser source to a photosensitive drum, a scanner temperature sensor provided near the optical box, and an environmental temperature sensor for detecting a surrounding temperature of the image forming apparatus, and a control section. When image formation is executed, the control section obtains a temperature Tscn detected by the scanner temperature sensor and a temperature Tenv detected by the environmental temperature sensor and calculates a prediction value of a position misregistration amount to the photoreceptor of the laser beam using difference between Tscn and Tenv and Tscn.
    Type: Application
    Filed: May 24, 2017
    Publication date: December 7, 2017
    Inventors: Akira Hamano, Koichi Taniguchi, Daisuke Aruga
  • Patent number: 9833861
    Abstract: A friction stir welding method for welding steel sheets together includes a heating device disposed ahead of a rotating tool in an advancing direction that preheats an unwelded portion before the welding thereof by the rotating tool and at the time of preheating, the surface temperature distribution in a direction perpendicular to the advancing direction in a position at which the welding by the rotating tool is initiated is set such that given that TAc1 is the Ac1 point of a steel sheet, the maximum temperature (TU) thereof is 0.6×TAc1<TU<1.8×TAc1, and given that L is the width of the heating region exceeding a temperature (TL)=0.6×TAc1, 0.3×d?L?2.0×d is satisfied with a diameter (d) of the shoulder.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: December 5, 2017
    Assignee: JFE Steel Corporation
    Inventors: Koichi Taniguchi, Muneo Matsushita, Rinsei Ikeda
  • Patent number: 9829833
    Abstract: An image forming apparatus includes an image bearing member, a toner image forming unit, an intermediary transfer member, a first driving source, a second driving portion, a speed instruction value changing portion, an executing portion for executing an operation in a detecting mode in a first detection period in a first state and in a second detection period in a second state larger in frictional force than in the first state, and a setting portion. In each of the first and second detection periods, the speed instruction value of the second driving source is set at a fixed value and the speed instruction value of the first driving source is successively changed to different values, and the setting portion sets the speed instruction value of the first driving source used during the image formation on the basis of a detection result in the detecting mode.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: November 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tadashi Iwakawa, Koichi Taniguchi, Takuya Matsumura
  • Patent number: 9821407
    Abstract: A process of pre-heating treatment is performed such that steel sheets or plates as working materials are heated by a heating unit provided ahead of a rotational tool moving in a welding direction to precisely control the surface temperature, area, position and the like of a heating region in the process of pre-heating treatment when performing friction stir welding on structural steel.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: November 21, 2017
    Assignee: JFE Steel Corporation
    Inventors: Muneo Matsushita, Koichi Taniguchi, Rinsei Ikeda
  • Patent number: 9812441
    Abstract: In a semiconductor integrated circuit device, a plurality of electrode pads for external connection are arranged in a zigzag pattern. Some electrode pads of the electrode pads of the plurality of I/O cells which are closer to a side of the semiconductor chip, each have an end portion closer to the side of the semiconductor chip, the end portion being set at the same position as that of an end portion of the corresponding I/O cell. A power source-side protective circuit and a ground-side protective circuit against discharge of static electricity are provided with the power source-side protective circuit being closer to the scribe region. A distance between a center position of one of the electrode pads and the ground-side protective circuit of the corresponding I/O cell and a distance between a center position of the other one electrode pad and the ground-side protective circuit of the corresponding I/O cell are both short and are substantially equal between each I/O cell.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: November 7, 2017
    Assignee: SOCIONEXT INC.
    Inventors: Koichi Taniguchi, Masato Maede
  • Patent number: 9737955
    Abstract: In a welded joint manufactured by a method of resistance spot welding thin steel sheets, when the diameter of a nugget formed from the thin steel sheets is denoted by d, on a horizontal plane passing through a nugget surrounded by a corona bond, distribution of an amount of P in a region in the nugget surrounded by a closed curve at a distance d/100 from an end portion of a weld zone toward the inside of the nugget and a closed curve at a distance d/5 from the end portion of the weld zone toward the inside of the nugget is analyzed by area analysis, and the proportion of the region in terms of area in which the concentration m (mass %) of P is more than twice the concentration M (mass %) of P of a base metal composition is 5% or less.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: August 22, 2017
    Assignee: JFE STEEL CORPORATION
    Inventors: Koichi Taniguchi, Yasuaki Okita, Rinsei Ikeda
  • Publication number: 20170117268
    Abstract: In a semiconductor integrated circuit device, a plurality of electrode pads for external connection are arranged in a zigzag pattern. Some electrode pads of the electrode pads of the plurality of I/O cells which are closer to a side of the semiconductor chip, each have an end portion closer to the side of the semiconductor chip, the end portion being set at the same position as that of an end portion of the corresponding I/O cell. A power source-side protective circuit and a ground-side protective circuit against discharge of static electricity are provided with the power source-side protective circuit being closer to the scribe region. A distance between a center position of one of the electrode pads and the ground-side protective circuit of the corresponding I/O cell and a distance between a center position of the other one electrode pad and the ground-side protective circuit of the corresponding I/O cell are both short and are substantially equal between each I/O cell.
    Type: Application
    Filed: January 10, 2017
    Publication date: April 27, 2017
    Inventors: Koichi TANIGUCHI, Masato MAEDE
  • Patent number: 9576947
    Abstract: In a semiconductor integrated circuit device, a plurality of electrode pads for external connection are arranged in a zigzag pattern. Some electrode pads of the electrode pads of the plurality of I/O cells which are closer to a side of the semiconductor chip, each have an end portion closer to the side of the semiconductor chip, the end portion being set at the same position as that of an end portion of the corresponding I/O cell. A power source-side protective circuit and a ground-side protective circuit against discharge of static electricity are provided with the power source-side protective circuit being closer to the scribe region. A distance between a center position of one of the electrode pads and the ground-side protective circuit of the corresponding I/O cell and a distance between a center position of the other one electrode pad and the ground-side protective circuit of the corresponding I/O cell are both short and are substantially equal between each I/O cell.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: February 21, 2017
    Assignee: SOCIONEXT INC.
    Inventors: Koichi Taniguchi, Masato Maede
  • Patent number: 9475147
    Abstract: Provided is a method of resistance spot welding of welding a sheet set including a high strength steel sheet with which a high joint strength can be achieved even for a high Ceq material. A method of resistance spot welding a sheet set of two or more lapped steel sheets by weld the sheet set while clamping and pressing the sheet set between a pair of welding electrodes includes a first welding step of applying an weld current Im (kA) and forming a nugget having a nugget diameter d (mm) that satisfies the following inequality (1); a cooling step, subsequent to the foregoing first welding, of cooling the sheet set while continuing to press the sheet set; and a second welding step of performing two-step welding, 3×?tm?d?6×?tm??(1), where tm is the thickness (mm) of the thinnest one of the foregoing two or more steel sheets.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: October 25, 2016
    Assignee: JFE STEEL CORPORATION
    Inventors: Koichi Taniguchi, Yasuaki Okita, Rinsei Ikeda
  • Publication number: 20160271719
    Abstract: Resistance spot welding is performed on a combination of overlapping steel sheets including at least one steel sheet that has, on a surface thereof, a coated layer with zinc as a main component, by (1) starting electric current passage in a state satisfying 0.9×t?L?1.1×t; and (2) dividing electric current into main current and initial current that precedes the main current and is two-step current, setting a current value I1 during current in a first step of the initial current to satisfy Im×1.1?I1?15.0 kA with respect to a current value In, during the main current, and setting a current value I2 in the subsequent second step to no current or low current satisfying 0?I2?Im×0.7.
    Type: Application
    Filed: December 4, 2014
    Publication date: September 22, 2016
    Applicant: JFE STEEL CORPORATION
    Inventors: Koichi TANIGUCHI, Yasuaki OKITA, Rinsei IKEDA
  • Publication number: 20160259275
    Abstract: An image forming apparatus includes an image bearing member, a toner image forming unit, an intermediary transfer member, a first driving source, a second driving portion, a speed instruction value changing portion, an executing portion for executing an operation in a detecting mode in a first detection period in a first state and in a second detection period in a second state larger in frictional force than in the first state, and a setting portion. In each of the first and second detection periods, the speed instruction value of the second driving source is set at a fixed value and the speed instruction value of the first driving source is successively changed to different values, and the setting portion sets the speed instruction value of the first driving source used during the image formation on the basis of a detection result in the detecting mode.
    Type: Application
    Filed: March 1, 2016
    Publication date: September 8, 2016
    Inventors: Tadashi Iwakawa, Koichi Taniguchi, Takuya Matsumura