Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6497935 | Phase-change optical information recording medium | — | 2002-12-24 |
| 6388978 | Optical recording method for a rewritable phase-change optical recording medium | Katsuyuki Yamada, Eiji Noda, Yuki Nakamura, Kenichi Aihara, Hiroko Iwasaki | 2002-05-14 |