Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695571 | Cleaning method using a defluxing agent | Keiji Watanabe, Yasuo Yamagishi, Ei Yano, Nobuo Igusa, Isamu Takachi | 1997-12-09 |
| 5643831 | Process for forming solder balls on a plate having apertures using solder paste and transferring the solder balls to semiconductor device | Hidefumi Ueda, Michio Sono, Ichiro Yamaguchi, Kazuhiko Mitobe, Koki Otake +6 more | 1997-07-01 |
| 5616164 | Methods for making metal particle spherical and removing oxide film solder paste and soldering method | Kaoru Hashimoto, Toshimi Kawahara, Mayumi Osumi | 1997-04-01 |