YK

Yutaro Kumagai

AU Audio-Technica: 2 patents #8 of 30Top 30%
SA Sato: 2 patents #3 of 33Top 10%
Overall (2021): #36,379 of 548,734Top 7%
4
Patents 2021

Issued Patents 2021

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
D938934 Headphone Kodai Tsubone 2021-12-21
D929323 Battery charger Hiroto Oba 2021-08-31
D929324 Battery charger Hiroto Oba 2021-08-31
D920292 Earphone Hiromichi Ozawa 2021-05-25