Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831098 | Antistatic agent | Toshiaki Doyama | 1989-05-16 |
| 4822459 | Lead oxide-coated electrode for use in electrolysis and process for producing the same | Minoru Ueda, Takayuki Shimamune | 1989-04-18 |