Patents by Inventor Ko Tajima

Ko Tajima 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).

  • Mattress
    Patent number: D927227
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: August 10, 2021
    Assignee: NISHIKAWA Co., Ltd.
    Inventors: Ko Tajima, Yoji Shimura, Akihiko Kawasaka
  • Mattress
    Patent number: D927890
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: August 17, 2021
    Assignee: NISHIKAWA Co., Ltd.
    Inventors: Ko Tajima, Yoji Shimura, Akihiko Kawasaka
  • Cushion material
    Patent number: D966011
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: October 11, 2022
    Assignee: NISHIKAWA CO., LTD.
    Inventors: Ko Tajima, Yoji Shimura, Akihiko Kawasaka