Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5882795 | Non-magnetic coated particles having a defined parameter .alpha. of not less than 0.5 | Kazuyuki Hayashi, Keisuke Iwasaki, Yasuyuki Tanaka, Minoru Ohsugi, Hiroko Morii +2 more | 1999-03-16 |
| 5830557 | Non-magnetic undercoating layer for magnetic recording medium, magnetic recording medium and non-magnetic particles | Kazuyuki Hayashi, Keisuke Iwasaki, Yasuyuki Tanaka, Minoru Ohsugi, Hiroko Morii +2 more | 1998-11-03 |
| 5686012 | Modified particles | Kazuyuki Hayashi, Hiroko Morii, Minoru Ohsugi, Mamoru Kamigaki | 1997-11-11 |
| 5604015 | Non-magnetic undercoat layer for magnetic recording medium, magnetic recording medium and non-magnetic particles | Kazuyuki Hayashi, Keisuke Iwasaki, Yasuyuki Tanaka, Minoru Ohsugi, Hiroko Morii +2 more | 1997-02-18 |