Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10098578 | Alertness device, seat, and method for determining alertness | Shinji Sugiyama, Takayoshi Ito, Issey Takahashi | 2018-10-16 |
| 9815384 | Wakefulness-maintenance apparatus | Shinji Sugiyama, Toyokazu Nakano, Issey Takahashi | 2017-11-14 |
| 9693726 | Alertness device, seat, and method for determining alertness | Shinji Sugiyama, Takayoshi Ito, Issey Takahashi | 2017-07-04 |
| 8979761 | Sleepiness assessment apparatus | Issei Takahashi, Hayato Ohashi, Genki Tabata | 2015-03-17 |