Patents by Inventor Takafumi Ikeda

Takafumi Ikeda 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: 20240087616
    Abstract: A semiconductor memory device comprises: memory layers arranged in a first direction; and a first and a second via wirings having different positions in a second direction. The memory layer comprises: a first transistor electrically connected to the first via wiring; a memory portion electrically connected to the first transistor; a wiring electrically connected to the first transistor; a second transistor electrically connected to the second via wiring; and an electrode provided in a current path between the second transistor and the wiring. The second transistor comprises: a semiconductor layer electrically connected to the electrode and the second via wiring; and a gate electrode facing the semiconductor layer. The semiconductor layer faces at least one of surfaces on one side or the other side in the first direction of the gate electrode. The electrode includes a portion arranged with the second via wiring in a third direction.
    Type: Application
    Filed: September 8, 2023
    Publication date: March 14, 2024
    Applicant: Kioxia Corporation
    Inventors: Takafumi MASUDA, Nobuyoshi SAITO, Mutsumi OKAJIMA, Keiji IKEDA
  • Publication number: 20240081042
    Abstract: A semiconductor memory device comprises: a first memory layer; and a first via wiring and a second via wiring extending in a first direction, and having different positions from each other in a second direction. The first memory layer comprises: a first transistor electrically connected to the first via wiring; a memory portion electrically connected to the first transistor; a first wiring electrically connected to the first transistor; a second transistor electrically connected to the second via wiring and the first wiring; a first electrode electrically connected to the second transistor; and a second electrode electrically connected to the first wiring and first electrode. A length of the second electrode in the first direction is larger than one or both of a length of the first wiring in the first direction and a length of the first conductive layer in the first direction.
    Type: Application
    Filed: September 1, 2023
    Publication date: March 7, 2024
    Applicant: Kioxia Corporation
    Inventors: Takafumi MASUDA, Mutsumi OKAJIMA, Nobuyoshi SAITO, Keiji IKEDA
  • Patent number: 9868175
    Abstract: A seam welding device sandwiches between a first roller electrode and a second roller electrode a laminate, which is formed by laminating a plurality of workpieces and disposing the thinnest workpiece, which has the smallest thickness among the workpieces, on the outside, to carry out seam welding. The second roller electrode, which is in contact with the thinnest workpiece, is disposed further along the direction of welding progress than the first roller electrode.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: January 16, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takafumi Ikeda, Mitsugu Kaneko, Noriko Kurimoto, Kazuhiko Yamaashi
  • Publication number: 20160207138
    Abstract: A seam welding device sandwiches between a first roller electrode and a second roller electrode a laminate, which is formed by laminating a plurality of workpieces and disposing the thinnest workpiece, which has the smallest thickness among the workpieces, on the outside, to carry out seam welding. The second roller electrode, which is in contact with the thinnest workpiece, is disposed further along the direction of welding progress than the first roller electrode.
    Type: Application
    Filed: September 9, 2013
    Publication date: July 21, 2016
    Inventors: Takafumi IKEDA, Mitsugu KANEKO, Noriko KURIMOTO, Kazuhiko YAMAASHI
  • Patent number: 9227266
    Abstract: It is an object of the present invention to provide a seam welding warpage prevention method and apparatus capable of preventing warpage caused by cooling contraction after welding, in a case where workpieces are different from one another in material and thickness, and thus not uniform in thermal contraction. In the seam welding warpage prevention method for welding a plurality of workpieces W1 and W2 that are not uniform in thermal contraction with respect to an energizing direction, the workpieces W1 and W2 are clamped with a pair of roller electrodes 23 and 33 while applying current. The welding is performed in a state where the roller electrode 33 that abuts on the workpiece W2 having higher thermal contraction is offset in an advancing direction ahead of the roller electrode 23 that abuts on the workpiece W1 having lower thermal contraction.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: January 5, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Eisaku Hasegawa, Mitsugu Kaneko, Takafumi Ikeda, Haruhiko Kobayashi
  • Patent number: 8712578
    Abstract: There is provided a device and method for arranging a vial, which can efficiently arrange a plurality of vials in the same arrangement place. A device for arranging a vial includes an arm member 150 for sandwiching one vial 1 and a carrying means 58 for carrying the vial 1 sandwiched by the arm member 150 to a vial arranging section 202. A layout of the vials 1 in the vial arranging section 202 can be set according to the number (n) of the vials 1 carried into the same vial arranging section 202. The carrying means 58 can advance and retract the arm member 150 in at least two or more directions in the vial arranging section 202.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: April 29, 2014
    Assignee: Yuyama Mfg. Co., Ltd.
    Inventors: Takafumi Imai, Takafumi Ikeda
  • Publication number: 20130287535
    Abstract: There is provided a device and method for arranging a vial, which can efficiently arrange a plurality of vials in the same arrangement place. A device for arranging a vial includes an arm member 150 for sandwiching one vial 1 and a carrying means 58 for carrying the vial 1 sandwiched by the arm member 150 to a vial arranging section 202. A layout of the vials 1 in the vial arranging section 202 can be set according to the number (n) of the vials 1 carried into the same vial arranging section 202. The carrying means 58 can advance and retract the arm member 150 in at least two or more directions in the vial arranging section 202.
    Type: Application
    Filed: June 28, 2013
    Publication date: October 31, 2013
    Inventors: Takafumi IMAI, Takafumi Ikeda
  • Patent number: 8521323
    Abstract: There is provided a device and method for arranging a vial, which can efficiently arrange a plurality of vials in the same arrangement place. A device for arranging a vial includes an arm member 150 for sandwiching one vial 1 and a carrying means 58 for carrying the vial 1 sandwiched by the arm member 150 to a vial arranging section 202. A layout of the vials 1 in the vial arranging section 202 can be set according to the number (n) of the vials 1 carried into the same vial arranging section 202. The carrying means 58 can advance and retract the arm member 150 in at least two or more directions in the vial arranging section 202.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: August 27, 2013
    Assignee: Yuyama Mfg. Co., Ltd.
    Inventors: Takafumi Imai, Takafumi Ikeda
  • Patent number: 8350312
    Abstract: According to one embodiment, a semiconductor device includes a stacked structure that is formed by laminating a first insulating film, first conductive layer, second insulating film and second conductive layer on a semiconductor substrate and in which the first and second conductive layers are connected with a via electrically, an interlayer insulating film formed to electrically separate the second conductive layer into a first region including a connecting portion with the first conductive layer and a second region that does not include the connecting portion, a first contact plug formed on the first region and a second contact plug formed on the second region. An isolation insulating film is buried in portions of the substrate, first insulating film and first conductive layer in one peripheral portion on the second region side of the stacked structure and the second contact plug is formed above the isolation insulating film.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: January 8, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shoko Kikuchi, Takafumi Ikeda, Kazuhiro Shimizu
  • Patent number: 8304683
    Abstract: A seam welding apparatus and a seam welding method perform a seaming process on workpieces of various shapes having flange sections, by preventing a welding track formed by upper and lower rotary electrodes from becoming displaced from a welding reference line established on the flange section. The seam welding apparatus includes two rotary electrodes for gripping the flange section therebetween while seam-welding the flange section, a support for synchronizing movements of the two rotary electrodes with each other in a widthwise direction of the flange section, a turning mechanism for pressing at least one of the two rotary electrodes toward the workpiece body, a roller that abuts against an end face of the flange section, and roller adjusting means for positionally adjusting the roller.
    Type: Grant
    Filed: June 25, 2010
    Date of Patent: November 6, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Eisaku Hasegawa, Shogo Matsuda, Takafumi Ikeda
  • Patent number: 8241999
    Abstract: A semiconductor device has a circuit element region formed on a semiconductor substrate, and a protective pattern formed so as to surround the circuit element region.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: August 14, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takafumi Ikeda, Takahito Nakazawa, Hideaki Maekawa, Yuuichi Tatsumi, Toshifumi Minami
  • Patent number: 8176792
    Abstract: An inspection system for inspecting a processing accuracy of a work piece is provided. The inspection system includes a supporting mechanism which supports the work piece in a same posture as a posture in which the work piece is assembled to a body; a load reproduction device which applies a load to the work piece along a substantially vertical direction; and a measurement device which measures positions of at least one characteristic portion of the work piece while the load is being applied to the work piece.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: May 15, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Nobuhiro Kozasa, Takafumi Ikeda, Michio Kamiyama, Hitoshi Yoshimichi
  • Patent number: 8154071
    Abstract: According to an aspect of the present invention, there is provided a method for fabricating a nonvolatile semiconductor memory device including a memory cell being formed in a first region of a semiconductor substrate and a periphery circuit being formed in a second region of the semiconductor substrate, including forming a first gate electrode material film over the semiconductor substrate via a first gate insulator in the first region, etching the first gate electrode material film and the first gate insulator using a mask having a first opening in a first element isolation of the first region, etching the semiconductor substrate to a first depth to form a first isolation groove, forming a first insulation isolation layer in the first isolation groove, forming a second insulator on the first insulation isolation layer and on the first gate electrode, removing the second insulator by anisotropic etching, etching an upper portion of the first gate electrode to a second depth to form a first concave portion on
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: April 10, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroyuki Ishii, Takafumi Ikeda
  • Publication number: 20120074103
    Abstract: It is an object of the present invention to provide a seam welding warpage prevention method and apparatus capable of preventing warpage caused by cooling contraction after welding, in a case where workpieces are different from one another in material and thickness, and thus not uniform in thermal contraction. In the seam welding warpage prevention method for welding a plurality of workpieces W1 and W2 that are not uniform in thermal contraction with respect to an energizing direction, the workpieces W1 and W2 are clamped with a pair of roller electrodes 23 and 33 while applying current. The welding is performed in a state where the roller electrode 33 that abuts on the workpiece W2 having higher thermal contraction is offset in an advancing direction ahead of the roller electrode 23 that abuts on the workpiece W1 having lower thermal contraction.
    Type: Application
    Filed: September 15, 2011
    Publication date: March 29, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Eisaku HASEGAWA, Mitsugu KANEKO, Takafumi IKEDA, Haruhiko KOBAYASHI
  • Patent number: 8082648
    Abstract: An outer panel and an inner panel are integrated by placing peripheral parts of the outer panel on a top surface of a lower mold such that bending parts formed by bending the peripheral parts of the outer panel are set up upward; placing a central portion of the outer panel on a top surface of a lifting device; lifting the central portion of the outer panel by the lifting device to open leading end sides of the bending parts of the outer panel outward; placing the inner panel on the top surface of the outer panel so as to superimpose those onto each other; lowering the central portion of the outer panel by the lifting device; and pressing the bending parts toward the lower mold by an upper mold to further bend the bending parts, and making the bending parts to closely contact with the peripheral parts of the inner panel.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: December 27, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Nobuhiro Kozasa, Takafumi Ikeda, Michio Kamiyama, Hitoshi Yoshimichi
  • Publication number: 20110235414
    Abstract: According to one embodiment, a semiconductor memory device comprises a memory cell array, a controller. A memory cell array comprises bit lines, and memory cells configured to store different states, i.e., m values or n values. When storing the n values in a memory cell, the controller performs a first method of applying a bit-line voltage to a first bit line connected to the memory cell, and setting a second bit line adjacent to the first bit line at 0 V, in a read operation and in a verify operation. When storing the m values in the memory cell, the controller performs a second method of applying the bit-line voltage to all the bit lines in a read operation, and setting the first bit line and the second bit line at the bit-line voltage or 0 V in a verify operation, in accordance with whether the write is complete.
    Type: Application
    Filed: March 21, 2011
    Publication date: September 29, 2011
    Inventors: Takafumi Ikeda, Hiroki Murotani
  • Publication number: 20110204426
    Abstract: According to one embodiment, a semiconductor device includes a stacked structure that is formed by laminating a first insulating film, first conductive layer, second insulating film and second conductive layer on a semiconductor substrate and in which the first and second conductive layers are connected with a via electrically, an interlayer insulating film formed to electrically separate the second conductive layer into a first region including a connecting portion with the first conductive layer and a second region that does not include the connecting portion, a first contact plug formed on the first region and a second contact plug formed on the second region. An isolation insulating film is buried in portions of the substrate, first insulating film and first conductive layer in one peripheral portion on the second region side of the stacked structure and the second contact plug is formed above the isolation insulating film.
    Type: Application
    Filed: August 30, 2010
    Publication date: August 25, 2011
    Inventors: Shoko KIKUCHI, Takafumi IKEDA, Kazuhiro SHIMIZU
  • Publication number: 20110123306
    Abstract: There is provided a device and method for arranging a vial, which can efficiently arrange a plurality of vials in the same arrangement place. A device for arranging a vial includes an arm member 150 for sandwiching one vial 1 and a carrying means 58 for carrying the vial 1 sandwiched by the arm member 150 to a vial arranging section 202. A layout of the vials 1 in the vial arranging section 202 can be set according to the number (n) of the vials 1 carried into the same vial arranging section 202. The carrying means 58 can advance and retract the arm member 150 in at least two or more directions in the vial arranging section 202.
    Type: Application
    Filed: June 17, 2009
    Publication date: May 26, 2011
    Inventors: Takafumi Imai, Takafumi Ikeda
  • Publication number: 20100326965
    Abstract: A seam welding apparatus and a seam welding method perform a seaming process on workpieces of various shapes having flange sections, by preventing a welding track formed by upper and lower rotary electrodes from becoming displaced from a welding reference line established on the flange section. The seam welding apparatus includes two rotary electrodes for gripping the flange section therebetween while seam-welding the flange section, a support for synchronizing movements of the two rotary electrodes with each other in a widthwise direction of the flange section, a turning mechanism for pressing at least one of the two rotary electrodes toward the workpiece body, a roller that abuts against an end face of the flange section, and roller adjusting means for positionally adjusting the roller.
    Type: Application
    Filed: June 25, 2010
    Publication date: December 30, 2010
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Eisaku Hasegawa, Shogo Matsuda, Takafumi Ikeda
  • Patent number: RE43549
    Abstract: A writing device for display members is provided which can erasably writing patient information on a display member carried on the side of a drug carrier and automatically attach and detach it to and from the carrier. The writing device has an attach/detach/transfer unit for detaching, attaching and transferring a rewrite card to a carrier carrying the rewrite card, and a writing means connected to the attach/detach/transfer means for writing and displaying patient information on the rewrite card. The respective means are controlled based on prescription information to attach and detach the rewrite card to and from the side of the carrier.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: July 24, 2012
    Assignee: Kabushiki Kaisha Yuyama Seisakusho
    Inventors: Noaki Koike, Takafumi Ikeda