Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860171 | Surface illuminating apparatus | — | 1989-08-22 |
| 4855013 | Method for controlling the thickness of a thin crystal film | Kimihiro Ohta, Tadashi Nakagawa, Tsunenori Sakamoto, Naoyuki Kawai | 1989-08-08 |