Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618404 | Electrolytic process for producing lead sulfonate and tin sulfonate for solder plating use | Yoshiaki Okuhama, Seishi Masaki, Takao Takeuchi, Masakazu Yoshimoto | 1997-04-08 |