Patents by Inventor Koji Wakamatsu

Koji Wakamatsu 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: 11745668
    Abstract: A speaker disposition structure of a vehicle comprises a left hinge pillar and a right hinge pillar both extending in a vehicle up-down direction; a speaker box fixed to a lower portion of one of the left and right hinge pillars, and the speaker box having a closed inner space; and a partition located on a vehicle width direction inner side of the speaker box. A port opening connects with the inner space of the speaker box and is located in a front face of the speaker box. A space portion is surrounded by the front face of the speaker box, the dash panel, the hinge pillar, and the partition. The space portion connects with an occupant space of the space portion. A length of the space portion, from the port opening in a front-rear direction of the vehicle, is greater than a maximum length of the port opening.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: September 5, 2023
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Kiyoshi Mutsura, Kouki Hirao, Koji Wakamatsu, Hiroshi Yamanaka, Mayumi Fujimoto
  • Patent number: 11535171
    Abstract: A speaker disposition structure comprises a hinge pillar extending in a vehicle up-down direction; a side sill extending in a vehicle front-rear direction; a speaker box fixed to the hinge pillar; and a gap portion for arranging a vehicle component at an upper part of a vehicle-interior side of the side sill. The speaker box includes an abutting part abutting the hinge pillar; an upper space portion that bulges inward in a vehicle width direction from the abutting part above the gap portion and that holds a speaker; and an extended space portion that extends downward from the upper space portion and is adjacent to a vehicle-width-direction inner side of the gap portion. A dimension in a cross section orthogonal to the vehicle front-rear direction is smaller in a lower portion of the extended space portion than in an upper portion of the extended space portion.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: December 27, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Kiyoshi Mutsura, Kouki Hirao, Koji Wakamatsu, Hiroshi Yamanaka, Mayumi Fujimoto
  • Publication number: 20220089098
    Abstract: A speaker disposition structure of a vehicle comprises a left hinge pillar and a right hinge pillar both extending in a vehicle up-down direction; a speaker box fixed to a lower portion of one of the left and right hinge pillars, and the speaker box having a closed inner space; and a partition located on a vehicle width direction inner side of the speaker box. A port opening connects with the inner space of the speaker box and is located in a front face of the speaker box. A space portion is surrounded by the front face of the speaker box, the dash panel, the hinge pillar, and the partition. The space portion connects with an occupant space of the space portion. A length of the space portion, from the port opening in a front-rear direction of the vehicle, is greater than a maximum length of the port opening.
    Type: Application
    Filed: September 21, 2021
    Publication date: March 24, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Kiyoshi MUTSURA, Kouki HIRAO, Koji WAKAMATSU, Hiroshi YAMANAKA, Mayumi FUJIMOTO
  • Publication number: 20220089099
    Abstract: A speaker disposition structure comprises a hinge pillar extending in a vehicle up-down direction; a side sill extending in a vehicle front-rear direction; a speaker box fixed to the hinge pillar; and a gap portion for arranging a vehicle component at an upper part of a vehicle-interior side of the side sill. The speaker box includes an abutting part abutting the hinge pillar; an upper space portion that bulges inward in a vehicle width direction from the abutting part above the gap portion and that holds a speaker; and an extended space portion that extends downward from the upper space portion and is adjacent to a vehicle-width-direction inner side of the gap portion. A dimension in a cross section orthogonal to the vehicle front-rear direction is smaller in a lower portion of the extended space portion than in an upper portion of the extended space portion.
    Type: Application
    Filed: September 23, 2021
    Publication date: March 24, 2022
    Applicant: Mazda Motor Corporation
    Inventors: Kiyoshi MUTSURA, Kouki HIRAO, Koji WAKAMATSU, Hiroshi YAMANAKA, Mayumi FUJIMOTO
  • Patent number: 10981516
    Abstract: To a hinge pillar including a hinge pillar inner and a hinge pillar outer that form a closed cross-section extending vertically, a speaker box configured to hold and house a speaker therein is joined and fixed. As necessary, the speaker box includes a box part formed of a sheet metal member including a bottom and side walls that form a housing space housing the speaker, together with the bottom. The box part is arranged in the opening, with the bottom located in the closed cross-section and with the housing space open inside a vehicle cabin, and is joined to an edge of the opening.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: April 20, 2021
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Yuki Kataoka, Hidenori Matsuoka, Takeshi Nakamura, Kiyoshi Mutsura, Akihiro Fujiwara, Yoshihiro Teshima, Koji Wakamatsu, Hiroshi Yamanaka
  • Publication number: 20200108781
    Abstract: To a hinge pillar including a hinge pillar inner and a hinge pillar outer that form a closed cross-section extending vertically, a speaker box configured to hold and house a speaker therein is joined and fixed. As necessary, the speaker box includes a box part formed of a sheet metal member including a bottom and side walls that form a housing space housing the speaker, together with the bottom. The box part is arranged in the opening, with the bottom located in the closed cross-section and with the housing space open inside a vehicle cabin, and is joined to an edge of the opening.
    Type: Application
    Filed: February 23, 2018
    Publication date: April 9, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Yuki KATAOKA, Hidenori MATSUOKA, Takeshi NAKAMURA, Kiyoshi MUTSURA, Akihiro FUJIWARA, Yoshihiro TESHIMA, Koji WAKAMATSU, Hiroshi YAMANAKA
  • Patent number: 10583788
    Abstract: A sound system for a vehicle driven by an engine is provide, which includes an audio device for an internal space of a cabin of the vehicle, and a traveling state determiner configured to determine a traveling state of the vehicle. The audio device is configured to change a quality of a sound reproduced by a sound source and, when the traveling state determined by the traveling state determiner is a given traveling state, degrade the quality of the reproduced sound.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: March 10, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Isao Toda, Hironobu Hashiguchi, Koji Wakamatsu
  • Publication number: 20180376244
    Abstract: A sound system for a vehicle including an engine and an audio device for an internal space of a cabin as sound sources disposed at given positions of the vehicle is provided. The audio device is switchable between a first mode in which an audio sound including both an audible sound and an inaudible sound for a human is reproduced in the cabin and a second mode in which an audio sound including the audible sound but not including the inaudible sound is reproduced in the cabin. The sound system includes a traveling state detector configured to detect a traveling state of the vehicle, and a switch controlling module executable by a processor configured to reproduce the audio sound in the first mode under a condition that a given traveling state is detected by the traveling state detector.
    Type: Application
    Filed: June 20, 2018
    Publication date: December 27, 2018
    Inventors: Isao Toda, Katsumasa Sogame, Koji Wakamatsu, Hironobu Hashiguchi
  • Patent number: 10165354
    Abstract: A sound system for a vehicle including an engine and an audio device for an internal space of a cabin as sound sources disposed at given positions of the vehicle is provided. The audio device is switchable between a first mode in which an audio sound including both an audible sound and an inaudible sound for a human is reproduced in the cabin and a second mode in which an audio sound including the audible sound but not including the inaudible sound is reproduced in the cabin. The sound system includes a traveling state detector configured to detect a traveling state of the vehicle, and a switch controlling module executable by a processor configured to reproduce the audio sound in the first mode under a condition that a given traveling state is detected by the traveling state detector.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: December 25, 2018
    Assignee: Mazda Motor Corporation
    Inventors: Isao Toda, Katsumasa Sogame, Koji Wakamatsu, Hironobu Hashiguchi
  • Publication number: 20180326919
    Abstract: A sound system for a vehicle driven by an engine is provide, which includes an audio device for an internal space of a cabin of the vehicle, and a traveling state determiner configured to determine a traveling state of the vehicle. The audio device is configured to change a quality of a sound reproduced by a sound source and, when the traveling state determined by the traveling state determiner is a given traveling state, degrade the quality of the reproduced sound.
    Type: Application
    Filed: May 8, 2018
    Publication date: November 15, 2018
    Inventors: Isao Toda, Hironobu Hashiguchi, Koji Wakamatsu
  • Patent number: 8926309
    Abstract: An apparatus for manufacturing a reinforcing cloth of a seat pad which includes: a mold for fixing a sheet and having an outer shape substantially identical to a shape of the reinforcing cloth and provided with a plurality of air holes interconnecting an internal space with an outer surface; a closed space between the mold and a cover member formed by covering the sheet fixed on the mold with the cover member; a heating unit for heating the sheet; and an exhausting unit for exhausting air from the closed space is provided.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: January 6, 2015
    Assignees: Toyota Tsusho Corporation, Mold Technical Office Co. Ltd., Nitto Boseki Co. Ltd.
    Inventors: Masanori Shimada, Koji Wakamatsu, Toshio Iwasawa, Shunpei Ishida, Minoru Nakano
  • Patent number: 7758802
    Abstract: A method of manufacturing a reinforcing cloth of a seat pad includes: fixing a sheet on a mold having an outer shape substantially identical to a shape of the reinforcing cloth and provided with a plurality of air holes interconnecting an internal space with an outer surface; forming a closed space between the mold and a cover member by covering the sheet fixed on the mold with the cover member; heating the sheet; shaping the heated sheet into a shape following the outer shape of the mold by exhausting air from the closed space through the air holes; and demolding the sheet from the mold after removing the cover member.
    Type: Grant
    Filed: March 4, 2006
    Date of Patent: July 20, 2010
    Assignees: Toyota Tsusho Corporation, Mold Technical Office Co. Ltd., Nitto Boseki Co. Ltd.
    Inventors: Masanori Shimada, Koji Wakamatsu, Toshio Iwasawa, Shunpei Ishida, Minoru Nakano
  • Publication number: 20090191298
    Abstract: A method of manufacturing a reinforcing cloth of a sheet pad includes: fixing a sheet on a mold having an outer shape substantially identical to a shape of the reinforcing cloth and provided with a plurality of air holes interconnecting an internal space with an outer surface; forming a closed space between the mold and a cover member by covering the sheet fixed on the mold with the cover member; heating the sheet; shaping the heated sheet into a shape following the outer shape of the mold by exhausting air from the closed space through the air holes; and demolding the sheet from the mold after removing the cover member.
    Type: Application
    Filed: February 13, 2009
    Publication date: July 30, 2009
    Inventors: Masanori Shimada, Koji Wakamatsu, Toshio Iwasawa, Shunpei Ishida, Minoru Nakano
  • Publication number: 20060197250
    Abstract: A method of manufacturing a reinforcing cloth of a sheet pad includes: fixing a sheet on a mold having an outer shape substantially identical to a shape of the reinforcing cloth and provided with a plurality of air holes interconnecting an internal space with an outer surface; forming a closed space between the mold and a cover member by covering the sheet fixed on the mold with the cover member; heating the sheet; shaping the heated sheet into a shape following the outer shape of the mold by exhausting air from the closed space through the air holes; and demolding the sheet from the mold after removing the cover member.
    Type: Application
    Filed: March 4, 2006
    Publication date: September 7, 2006
    Inventors: Masanori Shimada, Koji Wakamatsu, Toshio Iwasawa, Shunpei Ishida, Minoru Nakano