YN

Yasuhiko Nakayama

AC Asia Optical Co.: 1 patents #6 of 27Top 25%
SC Sintai Optical (Shenzhen) Co.: 1 patents #6 of 27Top 25%
Overall (2021): #205,002 of 548,734Top 40%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D912643 Headphone Tomoya Takahashi, Takayuki Karasawa, Haruhiko Nishizawa, Xian-Bang Xie, Gui-Feng Li 2021-03-09