Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684778 | Initialization process for a phase change recording medium with a zero level drop in flash light emission | Noboru Yamada, Shigeaki Furukawa | 1997-11-04 |
| 5681632 | Optical information recording medium | Hideki Kitaura, Tetsuya Akiyama, Takeo Ohta, Ken'ichi Nagata, Noboru Yamada | 1997-10-28 |