Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6555886 | Device having two perovskite crystalline layers that shows hysteresis and piezoelectric behavior | Tadahiko Watanabe, Yun Liu, Morito Akiyama | 2003-04-29 |
| 6280655 | High-luminosity stress-luminescent material | Tadahiko Watanabe, Morito Akiyama, Kazuhiro Nonaka | 2001-08-28 |
| 6159394 | Stress emission material and its manufacturing method | Morito Akiyama, Kazuhiro Nonaka, Tadahiko Watanabe | 2000-12-12 |
| 6117574 | Triboluminescent inorganic material and a method for preparation thereof | Tadahiko Watanabe, Morito Akiyama | 2000-09-12 |