Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856869 | Display element and observation apparatus having the same | Yasuyuki Watanabe, Masato Yamanobe, Yukitoshi Ohkubo, Akihiro Nagano | 1989-08-15 |
| 4850681 | Optical modulation device | Masao Yamanobe, Yasuyuki Watanabe, Yukitoshi Ohkubo, Tomoyuki Umezawa, Chiori Mochizuki +5 more | 1989-07-25 |