Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6730226 | Water purifying method and apparatus | — | 2004-05-04 |
| 6210567 | Filtration device for tank water for aquarium fish | — | 2001-04-03 |
| 5326607 | Amorphous carbon substrate for a magnetic disk and a method of manufacturing the same | Kazuo Muramatsu, Nobuhiro Ohta, Motoharu Sato, Masami Takao, Hiroko Nagata +1 more | 1994-07-05 |