Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5600616 | Optical information recording and reproducing apparatus with variable reproduction signal processing for information reconstruction and recording medium with its reproduction condition | Chikashi Inokuchi, Mayumi Hironaka | 1997-02-04 |
| 5544137 | Optical disc record/playback apparatus | Shunji Ohara, Tamotsu Matsuo | 1996-08-06 |
| 5263011 | Optical recording and reproducing apparatus and recording medium having multilayer recording membranes | Masataka Maeda | 1993-11-16 |
| 5150351 | Optical information recording apparatus for recording an input signal having variable width pulse duration and pulse spacing periods | Eiji Ohno, Kenichi Nishiuchi, Noboru Yamada, Kunio Kimura, Nobuo Akahira | 1992-09-22 |
| 5109373 | Optical information recording method | Eiji Ohno, Kenichi Nishiuchi, Noboru Yamada, Kunio Kimura, Nobuo Akahira | 1992-04-28 |