Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695571 | Cleaning method using a defluxing agent | Keiji Watanabe, Masayuki Ochiai, Yasuo Yamagishi, Nobuo Igusa, Isamu Takachi | 1997-12-09 |
| 5633121 | Method for examining surface of copper layer in circuit board and process for producing circuit board | Takahisa Namiki, Yasuo Yamagishi | 1997-05-27 |