Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887166 | Direct-contact-type image sensor | Hiroaki Kakinuma, Yukio Kasuya, Masaaki Sakamoto, Tsukasa Watanabe | 1989-12-12 |
| 4859617 | Thin-film transistor fabrication process | Tsutomu Nomoto, Mamoru Yosida, Tsukasa Watanabe | 1989-08-22 |