Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5298305 | Phase-change type information recording medium | Makoto Harigaya, Yukio Ide, Yoshiyuki Kageyama, Hiroko Iwasaki | 1994-03-29 |
| 5251202 | Optical information recording medium having multi-layered structures for preventing undesired reflection and electric charging | Yujiro Kaneko, Wasaburo Ohta, Masashi Nakazawa, Isao Miyamoto, Hitoshi Nakamura +3 more | 1993-10-05 |