Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887143 | Semiconductor device | Akihiko Ohsaki | 1989-12-12 |
| 4876164 | Process for manufacturing a photomask | Yaichiro Watakabe, Shuichi Matsuda | 1989-10-24 |
| 4873163 | Photomask material | Yaichiro Watakabe, Hiroaki Morimoto | 1989-10-10 |
| 4872050 | Interconnection structure in semiconductor device and manufacturing method of the same | Hideo Kotani, Takio Oono, Kiyoto Watabe, Yasushi Kinoshita, Yoshikazu Nishikawa | 1989-10-03 |