Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688755 | Acidic cleaning aqueous solution for aluminum and aluminum alloy and method for cleaning the same | Masayuki Kamimura | 1997-11-18 |
| 5615098 | AC-DC converter | Takuya Ishii, Yoshio Mizutani, Haruo Watanabe, Yoshinori Kobayashi, Yutaka Sekine | 1997-03-25 |