Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6803104 | Magnetic recording medium, non-magnetic acicular black iron-based composite particles and process for producing the particles | Kazuyuki Hayashi, Keisuke Iwasaki, Hiroko Morii | 2004-10-12 |
| 6797783 | Modified natural rubber | Naoya Ichikawa, Toshiaki Sakaki, Yuichi Hioki, Masaharu Hayashi | 2004-09-28 |
| 6767611 | Black magnetic acicular containing composite particles magnetic recording medium | Kazuyuki Hayashi, Hiroko Morii, Mamoru Kamigaki, Keisuke Iwasaki | 2004-07-27 |