Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10220298 | Chopsticks handling game device and gaming method | Toshiyasu Tamura | 2019-03-05 |
| 9481302 | Mirror for checking blind spot | Yoshinori Koyama, Hisanaga Takeda, Yoshiyuki Iwata | 2016-11-01 |
| 9201177 | Safety confirmation mirror | Hiroshi Nishiyama, Katsumi Machida, Hisanaga Takeda, Yoshiyuki Iwata | 2015-12-01 |
| 5847889 | Reflecting mirror for airplane | Yoshinori Koyama | 1998-12-08 |