Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689630 | Information reproducing apparatus | — | 1997-11-18 |
| 5664094 | Method and apparatus for read-write-verification of data stored on an optical disc and stored in a buffer of an optical disk drive | Ichiro Iida | 1997-09-02 |
| 5617390 | Optical information recording medium having separate information and reference information portions and method using the same | Katsumi Iijima | 1997-04-01 |