Japan, Dec. 8 -- 国立大学法人佐賀大学 holds the trademark for 'ブルー酸素.' Other related details are as follows:

Application Number: Reg.No.6989406

Class: 01,03

Status: LIVE-REGISTRATION-Published for Opposition

Filing Date: June 30

Registration Date: Nov. 21

The original document can be viewed at: https://www.j-platpat.inpit.go.jp/c1801/TR/JP-2025-073225/40/en

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