Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684641 | Objective lens and optical head apparatus using the objective lens | Yasuhiro Tanaka, Osamu Doi, Kenji Inoue, Michihiro Yamagata | 1997-11-04 |
| 5629898 | Dynamic memory device, a memory module, and a method of refreshing a dynamic memory device | Youji Idei, Katsuhiro Shimohigashi, Masakazu Aoki, Hiromasa Noda, Katsuyuki Sato +5 more | 1997-05-13 |