Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618555 | Percutaneous absorption preparation | Shoichi Tokuda, Yasuhiro Fukushima, Shigeyuki Watanabe, Mitsuru Ochiai, Mutsuo Okumura +1 more | 1997-04-08 |
| 5617359 | Electrically erasable and programmable read only memory device with source voltage controller for quickly erasing data | — | 1997-04-01 |
| 5608671 | Non-volatile semiconductor memory | — | 1997-03-04 |