KO

Koji Otsuka

AU Audio-Technica: 2 patents #8 of 22Top 40%
Overall (2018): #128,310 of 503,207Top 30%
2
Patents 2018

Issued Patents 2018

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9959858 Noise-cancelling headphone Yumi Shimazaki, Kozo Ando 2018-05-01
9913020 Noise-cancelling headphone Yumi Shimazaki, Kozo Ando 2018-03-06