GENEVA, Oct. 27 -- OKUYAMA Ichiro (Grace Court Torimachi 802, 109-24, Torimachi, kurume-shi, Fukuoka8300018), 奥山 一郎 (福岡県久留米市通町１０９番地２４ グレイスコート通町８０２号) filed a patent application (PCT/JP2025/013964) for "SINGING AID" on Apr 08, 2025. With publication no. WO/2025/220535, the details related to the patent application was published on Oct 23, 2025.
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property O...