Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878742 | Liquid crystal optical modulator | Yukitoshi Ohkubo, Yasuyuki Watanabe, Chiori Mochizuki, Takayuki Ishii, Kazuya Ishiwata | 1989-11-07 |
| 4856869 | Display element and observation apparatus having the same | Hajime Sakata, Yasuyuki Watanabe, Yukitoshi Ohkubo, Akihiro Nagano | 1989-08-15 |
| 4822146 | Optical modulation element | Yasuyuki Watanabe, Yukitoshi Ohkubo | 1989-04-18 |