Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6606208 | Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier | Tatsuaki Ishida, Ryuji Sugita, Kiyokazu Tohma, Kazunari Yoshimoto | 2003-08-12 |
| 6606209 | Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier | Tatsuaki Ishida, Ryuji Sugita, Kiyokazu Tohma, Hiroshi Ryonai | 2003-08-12 |
| 6590727 | Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier | Tatsuaki Ishida, Ryuji Sugita, Kiyokazu Tohma, Kazunari Yoshimoto | 2003-07-08 |
| 6587290 | Master information carrier, method for producing the carrier, and method apparatus for writing information into magnetic record medium using the carrier | Tatsuaki Ishida, Ryuji Sugita, Kiyokazu Tohma, Kazunari Yoshimoto | 2003-07-01 |
| 6567227 | Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier | Tatsuaki Ishida, Ryuji Sugita, Kiyokazu Tohma, Kazunari Yoshimoto, Hiroshi Ryonai | 2003-05-20 |
| 6529341 | Magnetic recording/reproduction device using preformat information | Tatsuaki Ishida, Taizou Hamada, Kiyokazu Tohma, Hiroshi Ryonai | 2003-03-04 |