Issued Patents 1994
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5341354 | Apparatus for recording/reproducing optical information on/from optical card | — | 1994-08-23 |
| 5336872 | Information recording/reproducing apparatus for use in an optical card | — | 1994-08-09 |
| 5324926 | Optical card having alternative information record region | Kaori Ichikawa | 1994-06-28 |
| 5321679 | Apparatus for recording and/or reproducing information on and/or from record medium by using pick-up and method of resetting operational condition of the same | — | 1994-06-14 |
| 5311498 | Recording and reproducing apparatus provided in each data block with a secret information number | — | 1994-05-10 |
| 5285433 | Apparatus with position detecting means for recording and/or reproducing data on and/or from optical card | Mitsuo Oshiba | 1994-02-08 |