Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6458453 | Magnetic recording medium | Kazuyuki Hayashi, Hiroko Morii, Mamoru Kamigaki | 2002-10-01 |
| 6416864 | Black magnetic composite particles for a black magnetic toner | Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka | 2002-07-09 |
| 6379855 | Black magnetic toner and black magnetic composite particles therefor | Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka | 2002-04-30 |