Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861456 | Electrochemical device | Syunzo Mase | 1989-08-29 |
| 4798693 | Method of manufacturing an electrochemical device | Syunzo Mase | 1989-01-17 |
| 4797194 | Electrochemical element | Syunzo Mase | 1989-01-10 |