MM

Masaaki Matsuba

RO Roland: 3 patents #78 of 292Top 30%
Overall (All Time): #1,408,860 of 4,157,543Top 35%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
11423868 Keyboard device and musical sound emission method Takahiro Murai 2022-08-23
11252502 Sound emitting device, electronic keyboard musical instrument and sound emitting method Takahiro Murai 2022-02-15
11146872 Electronic keyboard instrument and sound releasing method thereof 2021-10-12