Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10098583 | Sleep quality estimation device, sleep quality estimation method and program for sleep quality estimation | Kazuhide Shigeto, Hirokazu Kikuchi | 2018-10-16 |
| 9841065 | Wet friction disk | — | 2017-12-12 |
| 9291211 | Wet friction material | — | 2016-03-22 |
| 8647253 | Sleep control device and control method therefor | Hisashi Iizuka | 2014-02-11 |
| 8576081 | Physiological condition estimation device and vehicle control device | Yoshiyuki Hatakeyama, Yutaka Hirano | 2013-11-05 |
| 8157075 | Wet friction material | Yoshihito Fujimaki | 2012-04-17 |
| 7919165 | Wet-type friction material and its manufacturing method | Masato Hasegawa | 2011-04-05 |
| 6776276 | Wet friction material and its manufacturing method | Masato Suzuki, Yoshihito Fujimaki | 2004-08-17 |