Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6797061 | Quartz glass crucible for pulling up silicon single crystal and production method therefor | Shigeo Mizuno, Yasuo Ohama | 2004-09-28 |
| 6694297 | Text information read-out device and music/voice reproduction device incorporating the same | — | 2004-02-17 |