Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6767611 | Black magnetic acicular containing composite particles magnetic recording medium | Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka, Keisuke Iwasaki | 2004-07-27 |
| 6689452 | Magnetic recording medium | Seiji Ishitani, Hiroko Morii | 2004-02-10 |