Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871236 | Organic thin film display element | Nobuhiro Gemma, Koichi Mizushima, Makoto Azuma, Yasushi Mori | 1989-10-03 |
| 4848270 | Method and apparatus for forming thin organic film | Shigeru Wakayama | 1989-07-18 |
| 4819057 | Semiconductor light-emitting element | Katsuyuki Naito, Masayoshi Okamoto, Koichi Mizushima, Toshio Nakayama, Masami Sugiuchi | 1989-04-04 |
| 4819210 | Optical information writing method | Nobuhiro Gemma, Koichi Mizushima, Makoto Azuma, Takano Iwakiri | 1989-04-04 |