Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6440531 | Hydrofluoric acid etched substrate for information recording medium | Junji Kurachi, Akihiro Koyama, Nobuyuki Yamamoto, Yasuhiro Saito, Kazuishi Mitani +1 more | 2002-08-27 |