Patents by Inventor Ryuji Nagatomo

Ryuji Nagatomo 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).

  • Playing surface for spinning top toy
    Patent number: D859531
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: September 10, 2019
    Assignee: TOMY COMPANY, LTD.
    Inventors: Hiroyuki Matsukawa, Ryuji Nagatomo
  • Playing surface for spinning top toy
    Patent number: D964467
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: September 20, 2022
    Assignee: TOMY COMPANY, LTD.
    Inventors: Makoto Muraki, Ryuji Nagatomo
  • Launching apparatus for spinning top toy
    Patent number: D969225
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: November 8, 2022
    Assignee: TOMY COMPANY, LTD.
    Inventors: Yohei Bando, Ryuji Nagatomo