Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D416018 | Combined optical disc recording and reproducing apparatus | Masafumi Ito, Shigeru Hasegawa | 1999-11-02 |
| D401917 | Disk drive | Masafumi Ito, Shigeru Hasegawa | 1998-12-01 |