Patents by Inventor Yutaro Kumagai

Yutaro Kumagai 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).

  • Headset
    Patent number: D894153
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: August 25, 2020
    Assignee: Audio-Technica Corporation
    Inventors: Mika Yoshino, Yutaro Kumagai
  • Headphone
    Patent number: D905016
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: December 15, 2020
    Assignee: AUDIO-TECHNICA CORPORATION
    Inventors: Yosuke Takubo, Yutaro Kumagai
  • Earphone
    Patent number: D920292
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: May 25, 2021
    Assignee: Audio-Technica Corporation
    Inventors: Hiromichi Ozawa, Yutaro Kumagai
  • Battery charger
    Patent number: D929323
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: August 31, 2021
    Assignee: SATO HOLDINGS KABUSHIKI KAISHA
    Inventors: Hiroto Oba, Yutaro Kumagai
  • Battery charger
    Patent number: D929324
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: August 31, 2021
    Assignee: SATO HOLDINGS KABUSHIKI KAISHA
    Inventors: Hiroto Oba, Yutaro Kumagai
  • Headphone
    Patent number: D938934
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: December 21, 2021
    Assignee: AUDIO-TECHNICA CORPORATION
    Inventors: Kodai Tsubone, Yutaro Kumagai
  • Equalizer
    Patent number: D956718
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: July 5, 2022
    Assignee: AUDIO-TECHNICA CORPORATION
    Inventors: Mai Kudo, Shinobusa Yura, Kazuyuki Ishihara, Yutaro Kumagai
  • Speaker pattern for a headphone
    Patent number: D997122
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: August 29, 2023
    Assignee: Audio-Technica Corporation
    Inventors: Nonomi Shiwaku, Yutaro Kumagai
  • Headphone headband support
    Patent number: D997123
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: August 29, 2023
    Assignee: Audio-Technica Corporation
    Inventors: Nonomi Shiwaku, Yutaro Kumagai
  • Earphone
    Patent number: D997133
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: August 29, 2023
    Assignee: AUDIO-TECHNICA CORPORATION
    Inventors: Daisuke Yoneyama, Takashi Nara, Yutaro Kumagai
  • Earphone
    Patent number: D1002585
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: October 24, 2023
    Assignee: Audio-Technica Corporation
    Inventors: Yosuke Takubo, Hiroaki Kokubun, Yutaro Kumagai
  • Headphone
    Patent number: D1003854
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: November 7, 2023
    Assignee: Audio-Technica Corporation
    Inventors: Nonomi Shiwaku, Yutaro Kumagai
  • Headphone
    Patent number: D1003855
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: November 7, 2023
    Assignee: Audio-Technica Corporation
    Inventors: Nonomi Shiwaku, Yutaro Kumagai
  • Headphone
    Patent number: D1008215
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: December 19, 2023
    Assignee: Audio-Technica Corporation
    Inventors: Nonomi Shiwaku, Yutaro Kumagai
  • Headphone
    Patent number: D1016779
    Type: Grant
    Filed: February 25, 2022
    Date of Patent: March 5, 2024
    Assignee: AUDIO-TECHNICA CORPORATION
    Inventors: Kodai Tsubone, Yutaro Kumagai
  • Headphone
    Patent number: D1018495
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: March 19, 2024
    Assignee: AUDIO-TECHNICA CORPORATION
    Inventors: Kodai Tsubone, Yutaro Kumagai
  • Battery charger for earphones
    Patent number: D1024942
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: April 30, 2024
    Assignee: AUDIO-TECHNICA CORPORATION
    Inventors: Daisuke Yoneyama, Takashi Nara, Yutaro Kumagai