Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688852 | Iron oxide particles and process for producing the same | Hiromitsu Misawa, Kazuo Fujioka, Koso Aoki, Yoji Okano, Minoru Kozawa | 1997-11-18 |
| 5688998 | Surface reforming agent, surface reforming method and cone-type calix 4! r e | Kunihiro Ichimura, Masahide Ueda | 1997-11-18 |
| 5648170 | Coated granular magnetite particles and process for producing the same | Yoji Okano, Kazuo Fujioka, Koso Aoki, Hiromitsu Misawa, Minoru Kozawa | 1997-07-15 |