Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819526 | Holding member for information storage disk and information storage disk drive device | Mariko Kataoka, Kousuke Nakajima, Junko Ishioka, Katsuhiko Yamaguchi, Toshitaka Yagi | 2004-11-16 |
| 6794043 | Glass-ceramics for a light filter | Junko Ishioka, Yasuyuki Kawashima | 2004-09-21 |
| 6677259 | Glass-ceramics for a light filter | Mariko Kataoka, Donald G. Polensky | 2004-01-13 |