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).

  • Publication number: 20200223151
    Abstract: The present invention relates to a band-like joint tape for covering a butting portion formed by butting an end portion of a one packing film to an end portion of another packing film and connecting the respective end portions of these packing films to each other. The joint tape is comprised of a laminate film formed by adhering a joint layer to a support layer at a peelable state, and covered so as to face the joint portion. to the butting portion and heat-sealed so that the joint layer is fused to the butting portion and the fused portion of the joint layer is peeled off from the support layer.
    Type: Application
    Filed: September 24, 2019
    Publication date: July 16, 2020
    Applicant: TAISEI LAMICK CO., LTD.
    Inventors: Naoki YOKOYAMA, Naoya HAMADA, Tomohiro SHIBASAKI
  • Patent number: 10647826
    Abstract: Provided is a resin composition to be suitably used as the matrix resin of a fiber-reinforced composite material excellent in fatigue resistance. In the resin composition for a fiber-reinforced composite material, 50 mass % or more of an epoxy resin (A) includes a phenol novolac-type epoxy resin containing a compound represented by the following general formula (1) and a compound represented by the following general formula (2), and in gel permeation chromatography measurement, the phenol novolac-type epoxy resin contains a body corresponding to m=0 at a ratio of 75% by area or more and a body corresponding to m=1 at a ratio of 6% by area or less.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: May 12, 2020
    Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
    Inventors: Yuichi Taniguchi, Kyohei Kano, Naoki Yokoyama
  • Patent number: 10266637
    Abstract: Provided are a polyurethane-modified epoxy resin composition having satisfactory operability of processing, such as casting or impregnation, in a composition state, a production method therefor, and a composition thereof. The polyurethane-modified epoxy resin is obtained by modifying a secondary hydroxyl group-containing bisphenol-based epoxy resin (a) having an epoxy equivalent from 150 g/eq to 200 g/eq and a hydroxyl equivalent from 2,000 g/eq to 2,600 g/eq with a polyol compound (b) having an Mn of 200 or more, a polyisocyanate compound (c), and a polyol compound (d) having an Mn of less than 200 serving as a chain extender. The polyurethane-modified epoxy resin uses the epoxy resin (a) in an amount from 20 wt % to 60 wt % with respect to the total amount of the respective components (a), (b), (c), and (d), and contains a polyurethane having the epoxy resin (a) added to both terminals thereof and/or one terminal thereof.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: April 23, 2019
    Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
    Inventors: Eisuke Yamada, Naoki Yokoyama, Tohru Kunitake
  • Publication number: 20190055369
    Abstract: Provided is a resin composition to be suitably used as the matrix resin of a fiber-reinforced composite material excellent in fatigue resistance. In the resin composition for a fiber-reinforced composite material, 50 mass % or more of an epoxy resin (A) includes a phenol novolac-type epoxy resin containing a compound represented by the following general formula (1) and a compound represented by the following general formula (2), and in gel permeation chromatography measurement, the phenol novolac-type epoxy resin contains a body corresponding to m=0 at a ratio of 75% by area or more and a body corresponding to m=1 at a ratio of 6% by area or less.
    Type: Application
    Filed: September 30, 2016
    Publication date: February 21, 2019
    Applicant: NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.
    Inventors: Yuichi TANIGUCHI, Kyohei KANO, Naoki YOKOYAMA
  • Publication number: 20190056164
    Abstract: A cold storage heat exchanger includes refrigerant tubes having therein refrigerant passages and arranged to provide a clearance therebetween. A cold storage container is bonded to a refrigerant tube and defines therein a compartment receiving a cold storage material. The cold storage container has protrusion portions protruding outward and being in contact with the refrigerant tube.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 21, 2019
    Inventors: Atsushi YAMADA, Seiji INOUE, Yoshio MIYATA, Naoki YOKOYAMA, Etsuo HASEGAWA, Jun ABEI, Hiroshi ISHIKAWA, Aun OTA, Kouta HAGIHARA
  • Patent number: 10208698
    Abstract: A direct fuel injection internal combustion engine having an injector for directly injecting fuel into a combustion chamber thereof is provided. The engine is configured so that a tumble flow is generated in the combustion chamber. A fuel injection by the injector can be performed in a first injection mode and a second injection mode, the first injection mode being a mode in which the fuel injection is completed after the tumble flow is generated, and the second injection mode being a mode in which the fuel injection is completed before the tumble flow is generated. The fuel injection of the first injection mode is performed before completion of the warming-up of the engine, and the fuel injection of the second injection mode is performed after completion of the warming-up of the engine.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: February 19, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Susumu Nakajima, Naoki Yokoyama, Kenji Hirose, Seiichi Hosogai, Hidekazu Hironobu, Tatsuo Yamanaka, Haruya Kitano, Yasuhiro Okura
  • Patent number: 10180113
    Abstract: A control system for an internal combustion engine, which is capable of controlling fuel injection valves while causing valve-closing delay time periods, which occur with the valves actually mounted on the engine, to be reflected thereon, thereby making it possible to improve exhaust emission characteristics and fuel economy performance. The ECU of the control system performs initial value-specific control in fuel injection control and ignition timing control, such that initial value acquisition conditions are satisfied, so as to calculate the initial values of the valve-closing delay time periods when the initial value acquisition conditions are satisfied. When normal-time control is performed, the valve-opening time periods of the valves are calculated using the initial values of the valve-opening time periods, and the valves are controlled to be open over the valve-opening time periods.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: January 15, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tatsuo Yamanaka, Susumu Nakajima, Naoki Yokoyama, Kenji Hirose, Hidekazu Hironobu, Seiichi Hosogai
  • Patent number: 10132549
    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: Grant
    Filed: February 9, 2015
    Date of Patent: November 20, 2018
    Assignee: DENSO CORPORATION
    Inventors: Atsushi Yamada, Seiji Inoue, Yoshio Miyata, Naoki Yokoyama, Etsuo Hasegawa, Jun Abei, Hiroshi Ishikawa, Aun Ota, Kouta Hagihara
  • Patent number: 10094318
    Abstract: An internal combustion engine control device to control a fuel injection valve includes: valve-close delay time acquisition circuitry configured to acquire a valve-close delay time of the fuel injection valve; first learning value calculation circuitry configured to calculate a first learning value based on the valve-close delay time when a running state of an internal combustion engine satisfies a predetermined learning condition; valve-open time calculation circuitry configured to calculate a valve-open time of the fuel injection valve based on the first learning value; second learning value calculation circuitry configured to calculate a second learning value based on the valve-close delay time irrespective of the running state of the internal combustion engine; and learning state determination circuitry configured to determine a learning state of the first learning value based on a relationship between the first learning value and second learning value.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: October 9, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tatsuo Yamanaka, Susumu Nakajima, Naoki Yokoyama, Kenji Hirose, Hidekazu Hironobu, Seiichi Hosogai
  • Patent number: 10065820
    Abstract: A sheet conveying apparatus configured to convey a sheet includes: a rotatable support portion configured to support a rotary portion which is configured to convey a sheet; an urging portion configured to urge the support portion in a direction of a rotary shaft center of the support portion with a support shaft, which is configured to support the support portion in a rotatable manner and is inserted through the urging portion; and a regulating portion configured to regulate a position of the support portion urged by the urging portion.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: September 4, 2018
    Assignee: Canon Finetech Nisca Inc.
    Inventor: Naoki Yokoyama
  • Publication number: 20180112615
    Abstract: An internal combustion engine control device to control a fuel injection valve includes: valve-close delay time acquisition circuitry configured to acquire a valve-close delay time of the fuel injection valve; first learning value calculation circuitry configured to calculate a first learning value based on the valve-close delay time when a running state of an internal combustion engine satisfies a predetermined learning condition; valve-open time calculation circuitry configured to calculate a valve-open time of the fuel injection valve based on the first learning value; second learning value calculation circuitry configured to calculate a second learning value based on the valve-close delay time irrespective of the running state of the internal combustion engine; and learning state determination circuitry configured to determine a learning state of the first learning value based on a relationship between the first learning value and second learning value.
    Type: Application
    Filed: August 21, 2017
    Publication date: April 26, 2018
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tatsuo YAMANAKA, Susumu NAKAJIMA, Naoki YOKOYAMA, Kenji HIROSE, Hidekazu HIRONOBU, Seiichi HOSOGAI
  • Patent number: 9926962
    Abstract: A self-tapping screw includes a head and a shank extending from the head. The shank includes a cylindrical shank immediately below the head and a truncated conical shank following an end of the cylindrical shank. The cylindrical shank is provided with a plurality of first external threads, the truncated conical shank is provided with a plurality of second external threads following the first external threads, and a peak of each of the second external threads is provided with a biting surface having a concave-convex form.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: March 27, 2018
    Assignee: CROWN SCREW CORPORATION
    Inventors: Nobuhiro Ogawa, Naoki Yokoyama
  • Publication number: 20180073460
    Abstract: A control system for an internal combustion engine, which is capable of controlling fuel injection valves while causing valve-closing delay time periods, which occur with the valves actually mounted on the engine, to be reflected thereon, thereby making it possible to improve exhaust emission characteristics and fuel economy performance. The ECU of the control system performs initial value-specific control in fuel injection control and ignition timing control, such that initial value acquisition conditions are satisfied, so as to calculate the initial values of the valve-closing delay time periods when the initial value acquisition conditions are satisfied. When normal-time control is performed, the valve-opening time periods of the valves are calculated using the initial values of the valve-opening time periods, and the valves are controlled to be open over the valve-opening time periods.
    Type: Application
    Filed: September 7, 2017
    Publication date: March 15, 2018
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tatsuo Yamanaka, Susumu Nakajima, Naoki Yokoyama, Kenji Hirose, Hidekazu Hironobu, Seiichi Hosogai
  • Publication number: 20170276088
    Abstract: A fuel injection device for an internal combustion engine including a cylinder, includes a fuel injection valve and a processor. The fuel injection valve injects fuel directly into the cylinder. The fuel injection valve has an injection hole which has a diameter and a length in an axial direction of the injection hole. A ratio of the length to the diameter being 1.0 or smaller. The processor is configured to determine, in a cold operation of the internal combustion engine, a fuel injection time during which the fuel injection valve continues to inject fuel such that an amount of soot in exhaust gas is less than an amount of soot in exhaust gas if the fuel injection valve has the ratio larger than 1.0.
    Type: Application
    Filed: March 24, 2017
    Publication date: September 28, 2017
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Susumu NAKAJIMA, Kenji HIROSE, Haruya KITANO, Hidekazu HIRONOBU, Tatsuo YAMANAKA, Naoki YOKOYAMA, Seiichi HOSOGAI, Kengo NAKANO
  • Publication number: 20170241366
    Abstract: A direct fuel injection internal combustion engine having an injector for directly injecting fuel into a combustion chamber thereof is provided. The engine is configured so that a tumble flow is generated in the combustion chamber. A fuel injection by the injector can be performed in a first injection mode and a second injection mode, the first injection mode being a mode in which the fuel injection is completed after the tumble flow is generated, and the second injection mode being a mode in which the fuel injection is completed before the tumble flow is generated. The fuel injection of the first injection mode is performed before completion of the warming-up of the engine, and the fuel injection of the second injection mode is performed after completion of the warming-up of the engine.
    Type: Application
    Filed: February 14, 2017
    Publication date: August 24, 2017
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Susumu Nakajima, Naoki Yokoyama, Kenji Hirose, Seiichi Hosogai, Hidekazu Hironobu, Tatsuo Yamanaka, Haruya Kitano, Yasuhiro Okura
  • Publication number: 20170198085
    Abstract: Provided are a polyurethane-modified epoxy resin composition having satisfactory operability of processing, such as casting or impregnation, in a composition state, a production method therefor, and a composition thereof. The polyurethane-modified epoxy resin is obtained by modifying a secondary hydroxyl group-containing bisphenol-based epoxy resin (a) having an epoxy equivalent of from 150 g/eq to 200 g/eq and a hydroxyl equivalent of from 2,000 g/eq to 2,600 g/eq with a medium to high molecular weight polyol compound (b) having an Mn of 200 or more, a polyisocyanate compound (c), and a low molecular weight polyol compound (d) having an Mn of less than 200 serving as a chain extender. The polyurethane-modified epoxy resin uses the epoxy resin (a) in an amount of from 20 wt % to 60 wt % with respect to the total amount of the respective components (a), (b), (c), and (d), and contains a polyurethane having the epoxy resin (a) added to each of both terminals thereof and/or one terminal thereof.
    Type: Application
    Filed: June 2, 2015
    Publication date: July 13, 2017
    Applicant: NIPPON STEEL & SUMIKIN CHEMICAL CO., LTD.
    Inventors: Eisuke YAMADA, Naoki YOKOYAMA, Tohru KUNITAKE
  • Publication number: 20170183175
    Abstract: A sheet conveying apparatus configured to convey a sheet includes: a rotatable support portion configured to support a rotary portion which is configured to convey a sheet; an urging portion configured to urge the support portion in a direction of a rotary shaft center of the support portion with a support shaft, which is configured to support the support portion in a rotatable manner and is inserted through the urging portion; and a regulating portion configured to regulate a position of the support portion urged by the urging portion.
    Type: Application
    Filed: December 14, 2016
    Publication date: June 29, 2017
    Inventor: Naoki Yokoyama
  • Publication number: 20160258467
    Abstract: A self-tapping screw according to the present invention includes a head and a shank extending from the head. The shank includes a cylindrical shank immediately below the head and a truncated conical shank following an end of the cylindrical shank, the cylindrical shank is provided with a plurality of first external threads, the truncated conical shank is provided with a plurality of second external threads following the first external threads, and a peak of each of the second external threads is provided with a biting surface having a concave-convex form.
    Type: Application
    Filed: November 23, 2015
    Publication date: September 8, 2016
    Inventors: Nobuhiro OGAWA, Naoki YOKOYAMA
  • Patent number: 9372034
    Abstract: An object of the invention is to provide an effective cooling-energy storing performance and a stable cooling-energy radiating performance and to realize a high productivity. An evaporator has a plurality of refrigerant tubes arranged at almost equal intervals to form therebetween accommodating spaces. A plurality of cooling-storage containers are arranged in some of the accommodating spaces and fins are arranged in the remaining accommodating spaces. A cooling-storage unit is formed by one cooling-storage container and two refrigerant tubes arranged at both sides of the cooling-storage container. Each of the cooling-storage container has projections extending from one wall portion to the other wall portion to form heat exchange portions. The cooling-storage container is connected to the refrigerant tubes by soldering material.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: June 21, 2016
    Assignee: DENSO CORPORATION
    Inventors: Naoki Yokoyama, Yoshio Miyata, Etsuo Hasegawa, Masahiro Shimoya, Jun Abei, Ryoichi Sanada, Takashi Andoh, Seiji Inoue, Katsutoshi Enomoto
  • 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