Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4592974 | Active material for negative poles of alkaline dry cells, and method for making said material | Shigeru Ooyama, Yukio Ishibashi | 1986-06-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4592974 | Active material for negative poles of alkaline dry cells, and method for making said material | Shigeru Ooyama, Yukio Ishibashi | 1986-06-03 |