Patents by Inventor Koki Tanaka

Koki Tanaka 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: 20200122610
    Abstract: An occupant protection device, for a vehicle which protects an occupant seated on a seating surface of a seat, includes: a first push-up mechanism which pushes up a waist portion of the occupant by raising a rear portion of the seating surface; a second push-up mechanism which pushes up a thigh portion of the occupant by raising a front portion of the seating surface; and a control unit which controls operations of the first push-up mechanism and the second push-up mechanism. The control unit operates the first push-up mechanism and then operates the second push-up mechanism when an impact applied to the vehicle from the front of the seat is detected or predicted.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 23, 2020
    Inventors: Koki TANAKA, Takashi IIDA, Shigeyuki SUZUKI, Tadashi YAMADA, Shigemi MASE
  • Publication number: 20200122679
    Abstract: A side airbag device includes: a main bag which is an airbag deployed between a passenger seated on a seat and a side wall portion of a vehicle, the airbag being configured to expand by gas supply when a vehicle side collision occurs; and a sub bag deployed between a side frame on a vehicle outer side in a seat back of the seat and the passenger, the sub bag being configured to expand by supplying gas and push a waist portion of the passenger forward from backward, prior to deployment of the main bag, when the vehicle side collision occurs.
    Type: Application
    Filed: October 14, 2019
    Publication date: April 23, 2020
    Inventors: Koki TANAKA, Takashi IIDA, Kenichi FUKURONO, Yuji SATO
  • Publication number: 20200055105
    Abstract: A cooling device cooling an undersurface of a hot rolled steel sheet that is being transported on transport rolls after finish rolling of a hot rolling step includes: width divided cooling zones that are a plurality of cooling zones into which a whole cooling zone is divided in a sheet width direction; divided cooling sections that are a plurality of cooling zones into which each of the width divided cooling zones is divided in the rolling direction; a water nozzle spraying cooling water over each of undersurfaces of the divided cooling sections; a switching mechanism switching the cooling water between impinging and not impinging on the divided cooling sections; a width direction thermometer measuring a temperature distribution in the sheet width direction; and a controller controlling operation of the switching mechanism.
    Type: Application
    Filed: March 31, 2017
    Publication date: February 20, 2020
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yohichi HARAGUCHI, Yoshihiro SERIZAWA, Tatsuro HONDA, Hisayoshi TACHIBANA, Susumu NAKAGAWA, Koki TANAKA, Shota ISHITSUKA
  • Publication number: 20200039459
    Abstract: A seat cushion airbag apparatus is applied to a vehicle seat in which a seat cushion includes a cushion part and a support portion. An airbag, including an inflatable portion, is disposed between the support portion and the cushion part. The inflatable portion includes: a rear inflatable portion that inflates on a lower side of buttocks of an occupant; a front inflatable portion that inflates on a lower side of a femur of the occupant; and a connection portion that connects the rear inflatable portion and the front inflatable portion. A tilting plate is disposed between the support portion and the cushion part and is supported to be tiltable in an upper-lower direction by a shaft provided rearward of the front inflatable portion, the tilting plate including a flat pressure receiving portion that receives pressure of inflation gas from a lower side through at least the front inflatable portion.
    Type: Application
    Filed: July 26, 2019
    Publication date: February 6, 2020
    Inventors: Koki TANAKA, Takashi IIDA, Shigeyuki SUZUKI, Tadashi YAMADA, Yasushi MASUDA, Hajime KITTE, Motoyuki TANAKA
  • Publication number: 20180274145
    Abstract: A coating apparatus of an airbag reinforcing liquid is used in a sewing machine that includes: a sewing needle driving an upper thread by penetrating sewing target cloth through a vertical movement; and a presser foot disposed above the sewing target cloth, and feeding the sewing target cloth while moving vertically synchronously with the vertical movement of the sewing needle. The coating apparatus includes: a reinforcing liquid supplying part, supplying a reinforcing liquid for reinforcing a sewn part onto the sewing target cloth on a front side from the sewing needle in a feeding direction of the sewing target cloth; and a stamp part attached to the presser foot, and expand the reinforcing liquid supplied from the reinforcing liquid supplying part onto the sewing target cloth around the sewn part by being operated integrally with the presser foot above the sewing target cloth.
    Type: Application
    Filed: February 28, 2018
    Publication date: September 27, 2018
    Inventor: Koki TANAKA
  • Patent number: 10074857
    Abstract: A titanium or titanium alloy material for a separator of a polymer electrolyte fuel cell having high contact conductivity with carbon and high durability, and including an oxide film formed on a titanium or titanium alloy substrate by a stabilization treatment performed after a passivation treatment, and one or more kinds of conductive materials selected from carbide, nitride, carbonitride, and boride of tantalum, titanium, vanadium, zirconium, and chromium, the conductive materials being dispersed in the oxide film and having a major axis diameter of from 1 nm to 100 nm. A contact resistance value with a carbon paper is 20 m?·cm2 or less at a surface pressure of 10 kgf/cm2 before and after an accelerated deterioration test in which the titanium or titanium alloy material is immersed in a sulfuric acid aqueous solution having an adjusted pH of 4 at 80° C. for four days.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: September 11, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hiroshi Kihira, Yuuichi Yosida, Taku Kagawa, Takumi Nishimoto, Koki Tanaka, Masao Kimura, Kiyonori Tokuno, Kazuhiro Takahashi, Takashi Domoto
  • Patent number: 9947942
    Abstract: A titanium or titanium alloy material for a fuel cell separator has a surface shape in which a plurality of projections are distributed, and a titanium oxide film on a surface of the projections. Fine projections are assumed to increase the contact conductivity remarkably. By increasing contact conductivity with carbon and durability of a titanium or titanium alloy material for a fuel cell separator, the lifetime of a fuel cell may be increased. The material has high usability in the cell manufacturing industry.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: April 17, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kazuhiro Takahashi, Taku Kagawa, Hiroshi Kihira, Kiyonori Tokuno, Takumi Nishimoto, Koki Tanaka
  • Patent number: 9863088
    Abstract: A polyvinyl alcohol (PVA)-based airbag base fabric aqueous coating material is described. A blocked polyisocyanate component (B-NCO) and liquid polyol are added to polyvinyl alcohol as a cross-linkage improver and a plasticizer, respectively. The B-NCO is composed of or based on a medium-molecular-weight form as a polyether-modified prepolymer, and used concurrently with a low-molecular-weight form in a small amount. The base fabric coating material is applied on one or both of the sides of a cloth of the base fabric and heated. The acquired coating film is a water-insoluble coat and the coating has excellent heat and moisture resistance (hot water resistance) and flexibility.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: January 9, 2018
    Assignee: TOYODA GOSEI CO., LTD.
    Inventors: Koki Tanaka, Hajime Miwa, Motoaki Naruse, Yuh Kimura
  • Patent number: 9815430
    Abstract: A sewn airbag includes a plurality of base fabrics sewn together, wherein in a sewn region where reinforcement is required, a reinforcing coating film made of an adhesive coating material that is adhesive to both a sewing yarn and fibers forming the base fabrics is formed on at least one of the upper and lower surfaces of the sewn region, the reinforcing coating film having the smallest possible width along a stitching region in the form of one or more strips forming the sewn region made with the sewing yarn.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: November 14, 2017
    Assignee: TOYODA GOSEI CO., LTD.
    Inventor: Koki Tanaka
  • Patent number: 9725795
    Abstract: A galvannealed steel sheet includes: a steel sheet; a coating layer on a surface of the steel sheet; and a mixed layer formed between the steel sheet and the coating layer, in which the mixed layer includes a base iron portion having fine grains having a size of greater than 0 ?m and equal to or smaller than 2 ?m, a Zn—Fe alloy phase, and oxides containing one or more types of Mn, Si, Al, and Cr, and in the mixed layer, the oxides and the Zn—Fe alloy phase are present in grain boundaries that form the fine grains and the Zn—Fe alloy phase is tangled with the base iron portion. [Mn]+[Si]+[Al]+[Cr]?0.
    Type: Grant
    Filed: December 25, 2012
    Date of Patent: August 8, 2017
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Takeshi Yasui, Kojiro Akiba, Kiyokazu Ishizuka, Koki Tanaka
  • Publication number: 20160090059
    Abstract: A sewn airbag includes a plurality of base fabrics sewn together, wherein in a sewn region where reinforcement is required, a reinforcing coating film made of an adhesive coating material that is adhesive to both a sewing yarn and fibers forming the base fabrics is formed on at least one of the upper and lower surfaces of the sewn region, the reinforcing coating film having the smallest possible width along a stitching region in the form of one or more strips forming the sewn region made with the sewing yarn.
    Type: Application
    Filed: September 10, 2015
    Publication date: March 31, 2016
    Inventor: Koki TANAKA
  • Publication number: 20150329946
    Abstract: A galvannealed steel sheet includes: a steel sheet; a coating layer on a surface of the steel sheet; and a mixed layer formed between the steel sheet and the coating layer, in which the mixed layer includes a base iron portion having fine grains having a size of greater than 0 ?m and equal to or smaller than 2 ?m, a Zn—Fe alloy phase, and oxides containing one or more types of Mn, Si, Al, and Cr, and in the mixed layer, the oxides and the Zn—Fe alloy phase are present in grain boundaries that form the fine grains and the Zn—Fe alloy phase is tangled with the base iron portion. [Mn]+[Si]+[Al]+[Cr]?0.
    Type: Application
    Filed: December 25, 2012
    Publication date: November 19, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Takeshi YASUI, Kojiro AKIBA, Kiyokazu ISHIZUKA, Koki TANAKA
  • Publication number: 20150325864
    Abstract: [Object] To increase contact conductivity with carbon and durability of a titanium or titanium alloy material for a fuel cell separator so as to increase the lifetime of a fuel cell. [Solution] Provided is a titanium or titanium alloy material for a fuel cell separator having a surface shape in which a plurality of projections are distributed, and a titanium oxide film on a surface of the projections. Fine projections are assumed to increase the contact conductivity remarkably. The present invention has high usability in the cell manufacturing industry.
    Type: Application
    Filed: January 31, 2014
    Publication date: November 12, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Takumi NISHIMOTO, Hiroshi KIHIRA, Kiyonori TOKUNO, Taku KAGAWA, Koki TANAKA, Kazuhiro TAKAHASHI
  • Publication number: 20150280251
    Abstract: [Object] To increase contact conductivity with carbon and durability of a titanium or titanium alloy material for a fuel cell separator so as to increase the lifetime of a fuel cell. [Solution] Provided is a titanium or titanium alloy material for a fuel cell separator having a surface shape in which a plurality of projections are distributed, and a titanium oxide film on a surface of the projections. Fine projections are assumed to increase the contact conductivity remarkably. The present invention has high usability in the cell manufacturing industry.
    Type: Application
    Filed: January 31, 2014
    Publication date: October 1, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kazuhiro Takahashi, Taku Kagawa, Hiroshi Kihira, Kiyonori Tokuno, Takumi Nishimoto, Koki Tanaka
  • Patent number: 9065081
    Abstract: The present invention provides titanium material for a separator for solid polymer fuel cell use comprised of titanium which has a surface layer part where conductive compound particles are affixed, which is excellent in contact resistance between the separator surface and carbon paper and in durability, and which is low in cost and superior in recyclability and a method of production of the same. This titanium material for separator use has on the surface of the titanium base material a film comprised of the titanium compound particles made of titanium carbide, titanium nitride, or titanium carbonitride and titanium oxide. The film has a thickness of 0.1 to 1 ?m, the coverage rate is an area percentage of 20% or more, and the contents of carbon and nitrogen in the film total 5 to 40 at %. The titanium material for a separator is produced by annealing or shot blasting and pickling.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: June 23, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Koki Tanaka, Kazuhiro Takahashi, Hiroshi Kihira, Kiyonori Tokuno
  • Publication number: 20150147678
    Abstract: [Object] To provide a titanium or titanium alloy material for a separator of a polymer electrolyte fuel cell having high contact conductivity with carbon and high durability. [Solution] The titanium or titanium alloy material includes an oxide film formed on a titanium or titanium alloy substrate by stabilization treatment performed after passivation treatment, and one or more kinds of conductive materials selected from carbide, nitride, carbonitride, and boride of tantalum, titanium, vanadium, zirconium, and chromium, the conductive materials being dispersed in the oxide film and having a major axis diameter from 1 nm to 100 nm. A contact resistance value with a carbon paper is 20 m?·cm2 or less at a surface pressure of 10 kgf/cm2 before and after an accelerated deterioration test in which the titanium or titanium alloy material is immersed in a sulfuric acid aqueous solution having an adjusted pH of 4 at 80° C. for four days.
    Type: Application
    Filed: July 30, 2013
    Publication date: May 28, 2015
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hiroshi Kihira, Yuuichi Yosida, Taku Kagawa, Takumi Nishimoto, Koki Tanaka, Masao Kimura, Kiyonori Tokuno, Kazuhiro Takahashi, Takashi Domoto
  • Publication number: 20150093951
    Abstract: A polyvinyl alcohol (PVA)-based airbag base fabric aqueous coating material is provided. Blocked polyisocyanate component (B-NCO) and liquid polyol are added, respectively, as a cross-linkage improver and a plasticizer. The B-NCO is composed of or based on a medium-molecular-weight form as a polyether-modified prepolymer, used concurrently with a low-molecular-weight form in a small amount. The base fabric coating material is applied on one or both of the sides of a cloth of the base fabric, and heated. Thus the acquired coating film is a water-insoluble coat and the coat shows excellent heat and moisture resistance (hot water resistance) and flexibility.
    Type: Application
    Filed: September 18, 2014
    Publication date: April 2, 2015
    Inventors: Koki TANAKA, Hajime MIWA, Motoaki NARUSE, Yuh KIMURA
  • Publication number: 20140113516
    Abstract: The present invention relates to an aqueous coating material based on a water-soluble resin having the OH group for airbag base fabric. The water-soluble resin is a polyvinyl alcohol (PVAL). An aliphatic carboxylic acid or polyisocyanate which can cross-link with the OH group of the PVAL by heat treatment, and polyol as a plasticizer such as a liquid polyethylene glycol which does not volatilize in heat treatment are added. A water-insoluble coating film having excellent heat and moisture resistance (hot water resistance) and flexibility can be formed on one surface or both surfaces of the cloth.
    Type: Application
    Filed: September 27, 2012
    Publication date: April 24, 2014
    Inventors: Koki Tanaka, Daisuke Tsutsumi, Hiroyuki Kobayashi, Yuh Kimura, Motoaki Naruse, Masamichi Kajiro
  • Patent number: 8696020
    Abstract: An airbag apparatus mountable in front of a seat of a vehicle and including an airbag is disclosed. The airbag is deployable between a member of a vehicle body structure and knees of a vehicle occupant. The airbag includes a bag body formed by connecting peripheral edges of a vehicle body side wall and an occupant side wall, an outer connecting element that is located on an outer face of the vehicle body side wall and connected to the vehicle body side wall by two joints arranged away from each other in an up and down direction at deployment for reducing a length in an up and down direction of the vehicle body side wall, and a plurality of thin regions that are arranged between the two joints of the outer connecting element to the vehicle body side wall on the bag body. The thin regions are arranged generally along a left and right direction in a mutually separate fashion and help bend the airbag at deployment.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: April 15, 2014
    Assignee: Toyoda Gosei Co., Ltd.
    Inventor: Koki Tanaka
  • Patent number: 8603268
    Abstract: A titanium material for a solid polymer fuel cell separator having a low contact resistance and a method of production of the same, the titanium material having at its surface a surface layer structure in which particles of a Ti compound containing either C or N are dispersed, the particles of Ti compound being covered by titanium oxide and/or metal Ti, characterized in that, when analyzed from the surface by XPS, a Ti2p spectrum of TiO2 is detected, further, at a Ti2p spectral energy range of TiO and/or a Ti2p spectral energy range of metal Ti, a Ti maximum detection peak height is at least 3 times the standard deviations of the background at the respective spectral energy ranges, and at a C1s spectral energy range and N1s spectral energy range, a maximum detection peak height is less than 3 times the standard deviations of the background at the respective spectral energy ranges of C1s and N1s, are provided.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: December 10, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Kazuhiro Takahashi, Kiyonori Tokuno, Hiroshi Kihira, Koki Tanaka, Michio Kaneko