Patents by Inventor Naoki Yokoyama

Naoki Yokoyama 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: 9355916
    Abstract: A method manufactures a semiconductor device which allows nanocarbon materials, such as high-quality graphene and carbon nanotube to be used. The method of manufacturing the semiconductor device comprises forming on a substrate a wiring structure including wires of nanocarbon material; forming on the wiring structure an element structure including a semiconductor element; and interconnecting the wires of the wiring structure and the semiconductor element of the element structure.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: May 31, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Daiyu Kondo, Shintaro Sato, Naoki Yokoyama, Motonobu Sato
  • Publication number: 20160146326
    Abstract: A drive plate includes a plate section connected to a crankshaft of an engine, and an annular ring gear section that extends in an axial direction from an outer circumference of the plate section and includes external teeth that mesh with a pinion gear of a cell motor for cranking the engine, where the plate section and the ring gear section are integrally formed by press working; each of the inner side recesses is formed on an inner circumferential surface of the ring gear section so as to be located on an inner side of each of the external teeth at least on a play end side of the ring gear section; and each of the external teeth includes a step portion recessed toward the inner side than a tooth tip on the play end side.
    Type: Application
    Filed: July 11, 2014
    Publication date: May 26, 2016
    Applicant: AISIN AW CO., LTD.
    Inventors: Hiroshi SHIBATA, Gen HAMADA, Hiroki YOKOYAMA, Tsuyoshi AOYAMA, Yoshitomo IZAWA, Takuya INAGAKI, Shuji YAMAGUCHI, Sachio HONJO, Tomoyuki HORI, Naoki YOKOYAMA, Ken SHIMIZU, Kenta ITAYAMA
  • Patent number: 9328811
    Abstract: A drive plate includes a disk-shaped plate portion; and a tooth-shaped portion formed at an outer peripheral end of the plate portion. The plate portion and the tooth-shaped portion are integrally shaped from a single steel plate material. The plate portion and the tooth-shaped portion include a carburized layer provided over an entire surface layer of the plate portion and the tooth-shaped portion, the carburized layer having a carbon concentration higher than that of a center portion of the plate portion and the tooth-shaped portion in a thickness direction. The carburized layer of the plate portion is higher in hardness than the center portion of the plate portion in the thickness direction. The carburized layer of the tooth-shaped portion has been subjected to a quenching process, and is further higher in hardness than the carburized layer of the plate portion.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: May 3, 2016
    Assignee: AISIN AW CO., LTD.
    Inventors: Daisuke Iwata, Tomoyuki Hori, Naoki Yokoyama, Koji Obayashi, Keita Taguchi, Hiroshi Shibata
  • Patent number: 9242285
    Abstract: A manufacturing method and device for a drive plate that make it possible to obtain well-tensioned teeth at a ring gear portion while extending the life of a shaping die. A preferred embodiment provides a manufacturing device including: a compression punch that compresses a side wall portion of a raw material in an axial direction, the raw material including a bottom surface portion and the side wall portion which is cylindrical and provided to extend upright from an outer peripheral end portion of the bottom surface portion. A compression die disposed to face the compression punch in the axial direction and having a toothed shape formed on an inner peripheral surface. The compression punch contacts the compression die, and thereafter the compression die is pushed by the compression punch to form a toothed shape on the side wall portion while moving in the axial direction.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: January 26, 2016
    Assignee: AISIN AW CO., LTD.
    Inventors: Daisuke Iwata, Tomoyuki Hori, Naoki Yokoyama, Hiroshi Shibata, Masayuki Maki
  • Publication number: 20150279747
    Abstract: A method manufactures a semiconductor device which allows nanocarbon materials, such as high-quality graphene and carbon nanotube to be used. The method of manufacturing the semiconductor device comprises forming on a substrate a wiring structure including wires of nanocarbon material; forming on the wiring structure an element structure including a semiconductor element; and interconnecting the wires of the wiring structure and the semiconductor element of the element structure.
    Type: Application
    Filed: March 25, 2015
    Publication date: October 1, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Daiyu Kondo, Shintaro SATO, Naoki Yokoyama, Motonobu SATO
  • Patent number: 9062341
    Abstract: This invention provides a means for cell migration assays by regulating the cells adhered to a substrate so that they migrate to a given region, which is a substrate used for cell culture comprising: a base material comprising a conductive region and an insulating region provided thereon and cell-adhesive regions and non-cell-adhesive regions provided in the conductive region and the insulating region, respectively, wherein a cell-adhesive region is positioned adjacent to a non-cell-adhesive region in the conductive region, and a cell-adhesive region is positioned adjacent to a non-cell-adhesive region in the insulating region.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: June 23, 2015
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Naoki Yokoyama, Tomonori Akai, Yuya Takasugi
  • Publication number: 20150153090
    Abstract: A cold storage heat exchanger includes multiple refrigerant tubes arranged to provide a clearance therebetween, multiple cold storage containers each of which is interposed between adjacent refrigerant tubes, bonded to the adjacent refrigerant tubes and defining a compartment receiving a cold storage material. A surface of each cold storage container has multiple protrusion portions, and each protrusion portion protrudes outward and is in contact with the adjacent refrigerant tubes. The multiple protrusion portions are arranged in a zigzag manner or extend continuously in an air flow direction.
    Type: Application
    Filed: February 9, 2015
    Publication date: June 4, 2015
    Inventors: Atsushi YAMADA, Seiji INOUE, Yoshio MIYATA, Naoki YOKOYAMA, Etsuo HASEGAWA, Jun ABEI, Hiroshi ISHIKAWA, Aun OTA, Kouta HAGIHARA
  • Patent number: 9032757
    Abstract: A cold storage heat exchanger includes multiple refrigerant tubes, a cold storage container, an inner fin, a cooling air passage and an air-side fin. The inner fin is arranged inside of the cold storage container. The cooling air passage, in which air flows to cool a space, is provided to contact a surface of the refrigerant tube on a side opposite to the cold storage container. The air-side fin is arranged in the cooling air passage and thermally connected to the refrigerant tube. The cold storage container includes multiple recess portions bonded to the inner fin, and multiple protrusion portions located on an outer side of the recess portions. The protrusion portions of the cold storage container are bonded to an outer surface of the refrigerant tube.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: May 19, 2015
    Assignee: DENSO CORPORATION
    Inventors: Atsushi Yamada, Seiji Inoue, Yoshio Miyata, Naoki Yokoyama, Etsuo Hasegawa, Jun Abei, Hiroshi Ishikawa, Aun Ota, Kouta Hagihara
  • Patent number: 9027924
    Abstract: Provided is an information recording device in which jam processing operation can be easily performed with simple operation when a recording medium such as a card is jammed in a conveyance passage. A card storing section and a medium conveyance passage for conveying a card to an image forming section are arranged in a housing at upper and lower sides and a passage open-close member for removing a card jammed at the image forming section is arranged therebetween. Then, electronic information recording means is incorporated in the passage open-close member and a medium conveyance path which conveys a card toward the electronic information recording means is arranged on a medium introduction passage for feeding a card from the card storing section to the medium conveyance passage. According to the above, a card jammed at the image forming section or the information recording section can be easily removed to the outside of the device by opening the card storing section.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: May 12, 2015
    Assignees: Toppan Printing Co., Ltd., Nisca Corporation
    Inventors: Naoki Yokoyama, Akira Takei, Tatsuya Asakawa, Hiromitsu Tamura, Yuichi Aihara
  • Patent number: 8997354
    Abstract: A manufacturing method for a toothed member includes a thickened tooth shaping process in which a toothed shape is formed on a side wall portion while making a thickness of the side wall portion larger than a thickness of a bottom surface portion by relatively moving the compression die with respect to the restraint die and the pressure receiving member in the axial direction from the side of the opening end of the cup-shaped raw material toward the bottom surface portion. The manufacturing method being such that the thickened tooth shaping process includes applying a load against the restraint die such that the restraint die restrains the first surface and the second surface.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: April 7, 2015
    Assignee: Aisin AW Co., Ltd.
    Inventors: Daisuke Iwata, Tomoyuki Hori, Naoki Yokoyama, Hiroshi Shibata, Masayuki Maki
  • Patent number: 8978411
    Abstract: An outer surface of a cold-storage container (or a refrigerant tube) is provided with a plurality of protrusion portions or recess portions. A cooling air passage, in which air flows to cool a space to be cooled in a cold storage time and in a cold release time of the cold storage material, is provided to contact a surface of the refrigerant tube on a side opposite to the cold storage container bonded to the refrigerant tube. The refrigerant tubes and the cold storage container form therebetween a cold-storage side air passage by the protrusion portions or the recess portions, such that air flows in the cold-storage side air passage separated from the cooling air passage. For example, the cold-storage side air passage is provided with a slanting space that causes condensed water or ice generated in the cold storage time to be drained along the cold-storage side air passage.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: March 17, 2015
    Assignee: Denso Corporation
    Inventors: Atsushi Yamada, Seiji Inoue, Yoshio Miyata, Naoki Yokoyama, Etsuo Hasegawa, Jun Abei, Hiroshi Ishikawa, Aun Ota, Kouta Hagihara
  • Patent number: 8973395
    Abstract: A cold storage heat exchanger includes multiple refrigerant tubes, a cold storage container that is bonded to the refrigerant tube and defines a compartment receiving a cold storage material, and an inner fin arranged inside of the cold storage container. The cold storage container has a portion that stops and fixes the inner fin, and the cold storage container has a space where air is sealed. The space of the cold storage container is located at an upper side of the member that stops and fixes the inner fin. Accordingly, a stress applied to the cold storage container in the expansion of the cold storage material can be reduced.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: March 10, 2015
    Assignee: Denso Corporation
    Inventors: Atsushi Yamada, Seiji Inoue, Yoshio Miyata, Naoki Yokoyama, Etsuo Hasegawa, Jun Abei
  • Patent number: 8973396
    Abstract: A cold storage heat exchanger includes multiple refrigerant tubes having therein refrigerant passages. The refrigerant tubes are arranged to provide a clearance therebetween. The cold storage heat exchanger further includes a cold storage container that is brazed with the refrigerant tube and defines a compartment receiving a cold storage material. The cold storage container has an open-hole portion at a brazed part with the refrigerant tube. Accordingly, efficiency of heat exchange by the cold storage heat exchanger can be improved.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: March 10, 2015
    Assignee: Denso Corporation
    Inventors: Atsushi Yamada, Seiji Inoue, Yoshio Miyata, Naoki Yokoyama, Etsuo Hasegawa, Jun Abei
  • Patent number: 8875396
    Abstract: A manufacturing method for a toothed part including a bottom surface portion and a side wall portion provided to extend upright from an outer peripheral end portion of the bottom surface portion, the side wall portion being formed with teeth. The manufacturing method includes a half drawing process of performing draw shaping on a material having a disk shape to form the bottom surface portion and the side wall portion, an inside diameter of which becomes larger in a direction away from the bottom surface portion; and a tooth shaping process of forming the teeth in the side wall portion.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: November 4, 2014
    Assignee: Aisin AW Co., Ltd.
    Inventors: Daisuke Iwata, Tomoyuki Hori, Naoki Yokoyama, Hiroshi Shibata, Masayuki Maki
  • Patent number: 8757950
    Abstract: A screw has a head with a cross-shaped groove having first to fourth wing grooves, each having bilaterally-formed inner side faces defined by opposing base-end inner side faces, opposing intermediate inner side faces and opposing distal-end inner side faces angled at angles relative to each other so that the first angle of the base-end inner side face<the second angle of the intermediate inner side face<the third angle of the distal-end inner side face. The base-end inner side faces define a trapezoidal base, the distal-end inner side faces define an inverse-trapezoidal distal-end groove, and the intermediate inner side faces define an approximately parallel intermediate groove between each base-end groove and each distal-end groove. Each of the inner side faces is provided with an elevation angle spreading toward an opening face of the cross-shaped groove.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: June 24, 2014
    Assignee: Crown Screw Corporation
    Inventors: Nobuhiro Ogawa, Naoki Yokoyama
  • Patent number: 8759100
    Abstract: This invention provides a means for modifying surface properties of a cell culture substrate under specific conditions, to thereby regulate regions to which cells are allowed to adhere or are not allowed to adhere, depending on cell type. This invention relates to a method of cell culture comprising steps of: applying a positive potential to a conductive region of a substrate comprising a base material having a conductive region and a non-cell-adhesive membrane coupled thereto with the aid of silane, so as to separate the non-cell-adhesive membrane from the substrate; and culturing cells in a region from which the non-cell-adhesive membrane has been separated.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: June 24, 2014
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Naoki Yokoyama, Tomonori Akai
  • Publication number: 20140090826
    Abstract: A cold storage heat exchanger includes multiple refrigerant tubes having therein refrigerant passages. The refrigerant tubes are arranged to provide a clearance therebetween. The cold storage heat exchanger further includes a cold storage container that is brazed with the refrigerant tube and defines a compartment receiving a cold storage material. The cold storage container has an open-hole portion at a brazed part with the refrigerant tube. Accordingly, efficiency of heat exchange by the cold storage heat exchanger can be improved.
    Type: Application
    Filed: December 3, 2013
    Publication date: April 3, 2014
    Applicant: DENSO CORPORATION
    Inventors: Atsushi YAMADA, Seiji INOUE, Yoshio MIYATA, Naoki YOKOYAMA, Etsuo HASEGAWA, Jun ABEI
  • Publication number: 20140083662
    Abstract: A cold storage heat exchanger includes multiple refrigerant tubes, a cold storage container that is bonded to the refrigerant tube and defines a compartment receiving a cold storage material, and an inner fin arranged inside of the cold storage container. The cold storage container has a portion that stops and fixes the inner fin, and the cold storage container has a space where air is sealed. The space of the cold storage container is located at an upper side of the member that stops and fixes the inner fin. Accordingly, a stress applied to the cold storage container in the expansion of the cold storage material can be reduced.
    Type: Application
    Filed: December 3, 2013
    Publication date: March 27, 2014
    Applicant: DENSO CORPORATION
    Inventors: Atsushi YAMADA, Seiji INOUE, Yoshio MIYATA, Naoki YOKOYAMA, Etsuo HASEGAWA, Jun ABEI
  • Publication number: 20140083663
    Abstract: A cold storage heat exchanger includes multiple refrigerant tubes, a cold storage container, an inner fin, a cooling air passage and an air-side fin. The inner fin is arranged inside of the cold storage container. The cooling air passage, in which air flows to cool a space, is provided to contact a surface of the refrigerant tube on a side opposite to the cold storage container. The air-side fin is arranged in the cooling air passage and thermally connected to the refrigerant tube. The cold storage container includes multiple recess portions bonded to the inner fin, and multiple protrusion portions located on an outer side of the recess portions. The protrusion portions of the cold storage container are bonded to an outer surface of the refrigerant tube.
    Type: Application
    Filed: December 3, 2013
    Publication date: March 27, 2014
    Applicant: DENSO CORPORATION
    Inventors: Atsushi YAMADA, Seiji INOUE, Yoshio MIYATA, Naoki YOKOYAMA, Etsuo HASEGAWA, Jun ABEI, Hiroshi ISHIKAWA, Aun OTA, Kouta HAGIHARA
  • Publication number: 20140000334
    Abstract: A manufacturing method and device for a drive plate that make it possible to obtain well-tensioned teeth at a ring gear portion while extending the life of a shaping die. A preferred embodiment provides a manufacturing device including: a compression punch that compresses a side wall portion of a raw material in an axial direction, the raw material including a bottom surface portion and the side wall portion which is cylindrical and provided to extend upright from an outer peripheral end portion of the bottom surface portion. A compression die disposed to face the compression punch in the axial direction and having a toothed shape formed on an inner peripheral surface. The compression punch contacts the compression die, and thereafter the compression die is pushed by the compression punch to form a toothed shape on the side wall portion while moving in the axial direction.
    Type: Application
    Filed: October 24, 2011
    Publication date: January 2, 2014
    Applicant: AISIN AW CO., LTD.
    Inventors: Daisuke Iwata, Tomoyuki Hori, Naoki Yokoyama, Hiroshi Shibata, Masayuki Maki