Patents by Inventor Akihisa Okuda

Akihisa Okuda 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: 10717243
    Abstract: Provided is a preform member bonding method of bonding a preform member and another member with an adhesive in an RTM process. The preform member bonding method includes increasing viscosity of the adhesive by heat-treating only the adhesive in advance before inserting the adhesive between bonding surfaces of the preform member and the other member.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: July 21, 2020
    Assignee: MITSUBISHI AIRCRAFT CORPORATION
    Inventors: Yuichi Yui, Akihisa Okuda, Hiromichi Akiyama
  • Publication number: 20200198188
    Abstract: A flexible mandrel for molding a composite material containing a thermosetting resin includes: a body including a contact surface configured to come into contact with the composite material during molding and a non-contact surface configured not to come into contact with the composite material during molding; and at least one hole formed from the non-contact surface toward an inside of the body.
    Type: Application
    Filed: June 7, 2018
    Publication date: June 25, 2020
    Inventors: Takayuki SHIMIZU, Akihisa OKUDA, Ryota OZAKI, Shoya MANO, Masahiko SHIMIZU
  • Publication number: 20200189715
    Abstract: A fuel tank dam comprises a first section, a second section, a third section, and a flange section. The first section can be fixed to a first structural component, and the second section can be fixed to a second structural component. The third section has a bellows comprising a plurality of folded sections and is disposed between the first section and the second section. The flange section extends along an outer plate at least from an edge section of the third section and can be fixed to the outer plate.
    Type: Application
    Filed: June 28, 2018
    Publication date: June 18, 2020
    Applicant: Mitsubishi Heavy Industries, Ltd.
    Inventors: Eizaburo YAMAGUCHI, Tadasuke KURITA, Hajime TADA, Yoko TAGUCHI, Kana SAKON, Akihisa OKUDA, Ryoji OKABE
  • Publication number: 20200180244
    Abstract: This flexible mandrel for molding a composite material containing a thermosetting resin includes: a main body containing a first material; and a thermally conductive layer containing a second material having a higher thermal conductivity than the first material, the thermally conductive layer being formed so as to cover at least a portion of the main body. The thermally conductive layer extends from a contacting surface of the flexible mandrel, which comes into contact with the composite material during molding, to a non-contacting surface which does not come into contact with the composite material.
    Type: Application
    Filed: July 13, 2018
    Publication date: June 11, 2020
    Inventors: Takayuki SHIMIZU, Akihisa OKUDA, Ryota OZAKI, Shoya MANO, Masahiko SHIMIZU
  • Patent number: 10557097
    Abstract: A solid fuel manufacturing apparatus includes: a mixture producing device to produce a mixture by kneading wet combustible waste and a dehydrating agent to accelerate dehydrating the combustible waste; a mixture containing device; an intake device to introduce outside air into the mixture containing device; an exhaust device to discharge exhaust air out of the mixture containing device; a drive device to rotate the mixture containing device; a control device to control operations of the drive device; and a breaking device to break up the mixture contained in the mixture containing device. The dehydrating agent is made of an emulsion containing synthetic resin. The breaking device is placed along an inner peripheral wall of the mixture containing device and configured to scoop the mixture upward in the internal space and allow the mixture to freely fall from above in the internal space by rotation of the mixture containing device.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: February 11, 2020
    Assignee: AISAKU CO., LTD.
    Inventors: Shoichi Sudo, Wataru Yoshimura, Akihisa Okuda
  • Publication number: 20190329464
    Abstract: The temperature T (° C.) of a surface of an electroconductive mesh layer 15 in contact with a second resin layer (16), the thickness t1 of a first resin layer (14), and the thickness t2 of the second resin layer (16) satisfy expression (1). (1): T=f1(?1, ?1, Cp1)ln(t1)+f2(?2, ?2, Cp2)ln(t2)+C=[?1/(?1·Cp1)] ?2T/?x2+[?2/(?2·Cp2)]?2T/?x2+C=[?1/(?1·Cp1)]·[(TPn+1+TPn?1?2TPn)/(2·?x)2]+[?2/(?2·Cp2)]·[(TPn+1+TPn?1?2TPn)/(2·?x)2]+C.
    Type: Application
    Filed: July 31, 2017
    Publication date: October 31, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kosuke IKEDA, Ryoji OKABE, Yasunori WATANABE, Akihisa OKUDA, Kana SAKON
  • Patent number: 10333121
    Abstract: A secondary battery is provided with an electrode assembly, a case for accommodating the electrode assembly, and a pressure-release valve for releasing the pressure in the case to the outside of the case. The pressure-release valve has a groove including an intersection point. An opening width at a portion of the groove near the intersection point is wider than an opening width at a portion of the groove on the opposite side of the intersection point.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: June 25, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Akihisa Matsudo, Motoaki Okuda, Masami Tomioka
  • Patent number: 10072226
    Abstract: A method for manufacturing dried combustible material includes: a mixing step of mixing a number of particles made of combustible material containing moisture and a dehydrating liquid made of an emulsion containing synthetic resin to form a mixture in which surfaces of the particles are made contact with the dehydrating liquid; and a drying step of forming a synthetic resin coating made of the dehydrating liquid dried on the surfaces of the particles and evaporating the moisture of the particles, to form coated particles including the particles having a reduced moisture content percentage and the synthetic resin coating that covers the surfaces of the particles, and produce dried combustible material made up of the coated particles.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: September 11, 2018
    Assignee: ACT CO., LTD.
    Inventors: Hiroyuki Yamashita, Akihisa Okuda
  • Patent number: 9993949
    Abstract: Provided is a preform member bonding method, in a RTM process, for bonding a preform member and another member (a preform member or a hardened member) together with an adhesive. The preform member bonding method includes: beforehand obtaining data on a range of a level of progress in hardening of the adhesive which allows the adhesive to penetrate the preform member, and data on a range of the level of progress in the hardening of the adhesive which decreases bonding strength of the adhesive; and controlling the level of progress in the hardening of the adhesive by heat-treating the adhesive based on these data, before the preform member comes into contact with the adhesive.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: June 12, 2018
    Assignee: MITSUBISHI AIRCRAFT CORPORATION
    Inventors: Yuichi Yui, Akihisa Okuda, Hiromichi Akiyama
  • Patent number: 9815562
    Abstract: A fuel tank dam closes a gap that is formed between a first structural component and a second structural component. The fuel tank dam includes a first portion disposed on a first structural component side, a second portion disposed on a second structural component side, an elastic member that is supported by the first portion at one end while supported by the second portion at the other end and closes a gap that is formed between the first portion and the second portion, and a sealing mechanism that seals between the first member and the elastic member.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: November 14, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Eizaburo Yamaguchi, Akihisa Okuda
  • Patent number: 9776732
    Abstract: The purpose of the present invention is to provide: a structural material for structures which is capable of attaining reductions in working time and cost in production steps and of preventing an increase in weight; a fuel tank; a main wing; and an aircraft. A rib (11) as the structural material for structures is characterized by comprising a carbon-fiber-reinforced plastic wherein the reinforcement comprises carbon fibers and the matrix comprises a plastic, and the surface of the carbon-fiber-reinforced plastic was coated with a low-viscosity surface-protective material (18) having conductivity imparted thereto.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: October 3, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Nobuyuki Kamihara, Toshio Abe, Akihisa Okuda, Akira Ikada, Masayuki Yamashita, Kazuaki Kishimoto, Yuichiro Kamino
  • Publication number: 20160346973
    Abstract: Provided is a preform member bonding method of bonding a preform member and another member with an adhesive in an RTM process. The preform member bonding method includes increasing viscosity of the adhesive by heat-treating only the adhesive in advance before inserting the adhesive between bonding surfaces of the preform member and the other member.
    Type: Application
    Filed: April 26, 2016
    Publication date: December 1, 2016
    Inventors: Yuichi Yui, Akihisa Okuda, Hiromichi Akiyama
  • Publication number: 20160346963
    Abstract: Provided is a preform member bonding method, in a RTM process, for bonding a preform member and another member (a preform member or a hardened member) together with an adhesive. The preform member bonding method includes: beforehand obtaining data on a range of a level of progress in hardening of the adhesive which allows the adhesive to penetrate the preform member, and data on a range of the level of progress in the hardening of the adhesive which decreases bonding strength of the adhesive; and controlling the level of progress in the hardening of the adhesive by heat-treating the adhesive based on these data, before the preform member comes into contact with the adhesive.
    Type: Application
    Filed: April 26, 2016
    Publication date: December 1, 2016
    Inventors: Yuichi Yui, Akihisa Okuda, Hiromichi Akiyama
  • Publication number: 20160159490
    Abstract: A fuel tank dam closes a gap that is formed between a first structural component and a second structural component. The fuel tank dam includes a first portion disposed on a first structural component side, a second portion disposed on a second structural component side, an elastic member that is supported by the first portion at one end while supported by the second portion at the other end and closes a gap that is formed between the first portion and the second portion, and a sealing mechanism that seals between the first member and the elastic member.
    Type: Application
    Filed: September 11, 2014
    Publication date: June 9, 2016
    Inventors: Eizaburo YAMAGUCHI, Akihisa OKUDA
  • Publication number: 20150274316
    Abstract: The purpose of the present invention is to provide: a structural material for structures which is capable of attaining reductions in working time and cost in production steps and of preventing an increase in weight; a fuel tank; a main wing; and an aircraft. A rib (11) as the structural material for structures is characterized by comprising a carbon-fiber-reinforced plastic wherein the reinforcement comprises carbon fibers and the matrix comprises a plastic, and the surface of the carbon-fiber-reinforced plastic was coated with a low-viscosity surface-protective material (18) having conductivity imparted thereto.
    Type: Application
    Filed: October 9, 2013
    Publication date: October 1, 2015
    Inventors: Nobuyuki Kamihara, Toshio Abe, Akihisa Okuda, Akira Ikada, Masayuki Yamashita, Kazuaki Kishimoto, Yuichiro Kamino
  • Publication number: 20150247101
    Abstract: A solid fuel manufacturing apparatus includes: a mixture producing device to produce a mixture by kneading wet combustible waste and a dehydrating agent to accelerate dehydrating the combustible waste; a mixture containing device; an intake device to introduce outside air into the mixture containing device; an exhaust device to discharge exhaust air out of the mixture containing device; a drive device to rotate the mixture containing device; a control device to control operations of the drive device; and a breaking device to break up the mixture contained in the mixture containing device. The dehydrating agent is made of an emulsion containing synthetic resin. The breaking device is placed along an inner peripheral wall of the mixture containing device and configured to scoop the mixture upward in the internal space and allow the mixture to freely fall from above in the internal space by rotation of the mixture containing device.
    Type: Application
    Filed: March 3, 2014
    Publication date: September 3, 2015
    Inventors: Shoichi Sudo, Wataru Yoshimura, Akihisa Okuda
  • Publication number: 20150240177
    Abstract: A method for manufacturing dried combustible material includes: a mixing step of mixing a number of particles made of combustible material containing moisture and a dehydrating liquid made of an emulsion containing synthetic resin to form a mixture in which surfaces of the particles are made contact with the dehydrating liquid; and a drying step of forming a synthetic resin coating made of the dehydrating liquid dried on the surfaces of the particles and evaporating the moisture of the particles, to form coated particles including the particles having a reduced moisture content percentage and the synthetic resin coating that covers the surfaces of the particles, and produce dried combustible material made up of the coated particles.
    Type: Application
    Filed: February 25, 2014
    Publication date: August 27, 2015
    Applicant: ACT CO., LTD.
    Inventors: Hiroyuki Yamashita, Akihisa Okuda