Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6458222 | Metal material, brass and method for manufacturing the same | Ryuji Matsubara, Katsuaki Nakamura | 2002-10-01 |
| 5607595 | Process for purifying water | Masami Hiasa, Susumu Saito, Takayuki Ohtani | 1997-03-04 |