Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11745668 | Speaker disposition structure of vehicle | Kouki Hirao, Koji Wakamatsu, Hiroshi Yamanaka, Mayumi Fujimoto | 2023-09-05 |
| 11535171 | Speaker disposition structure of vehicle | Kouki Hirao, Koji Wakamatsu, Hiroshi Yamanaka, Mayumi Fujimoto | 2022-12-27 |
| 10981516 | Vehicle speaker disposition structure | Yuki KATAOKA, Hidenori Matsuoka, Takeshi Nakamura, Akihiro Fujiwara, Yoshihiro Teshima +2 more | 2021-04-20 |
| 6628573 | Sound apparatus for vehicle | Tsutomu Hasegawa, Akihiro Fujiwara, Futoshi Shoji | 2003-09-30 |