Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9125609 | Portable terminal having function of measuring mental fatigue, method for measuring same and server computer | Sunao Iwaki | 2015-09-08 |
| 8808196 | Measuring device and measuring method for threshold of flicker | Sunao Iwaki | 2014-08-19 |
| 8579441 | Measurement device and measurement method for flickering perception threshold | Sunao Iwaki, Kouichi Sutani | 2013-11-12 |
| 8485826 | Portable terminal device having function of measuring mental fatigue and its measuring method | Sunao Iwaki | 2013-07-16 |
| 7891814 | Mental fatigue detecting method and device | Sunao Iwaki | 2011-02-22 |