Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6347016 | Master information carrier, process for producing the carrier, and method and apparatus for recording master information signal on magnetic recording medium by using the carrier | Tatsuaki Ishida, Ryuji Sugita, Kiyokazu Tohma, Hiroshi Ryonai | 2002-02-12 |