Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7470231 | Fatigue degree measurement device, fatigue detection device and computer program to be used therein | Etsunori Fujita | 2008-12-30 |
| 6921132 | Seat structure | Etsunori Fujita, Yutaka Sakamoto, Kazuyoshi Chizuka, Seiji Kawasaki, Yasuhide Takata +1 more | 2005-07-26 |
| 5729109 | Navigation system and intersection guidance method | Akitoshi Aritaka, Yuji Hirai | 1998-03-17 |
| 5392138 | Facsimile apparatus | Nobuhiro Ootsuka, Yuji Hirai | 1995-02-21 |
| 5321741 | Facsimile apparatus for determining communication failure | Yuji Hirai | 1994-06-14 |