Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699289 | Power source circuit and wiring group for semiconductor memory device | — | 1997-12-16 |
| 5691933 | Semiconductor memory device having improved bit line distribution | — | 1997-11-25 |
| 5669988 | Corrugating roll and manufacturing method thereof | Yorishige Tosaka, Yasunobu Sahara, Yoshiaki Maruyama, Hidenori Yamane, Akio Izuwa | 1997-09-23 |
| 5611887 | Single facer and corrugating roll for the same | Hiroaki Sasashige, Takayuki Miyake | 1997-03-18 |