Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882519 | Discharge electrode material composed of yttrium and rhenium or ruthenium | Hiroshi Mikita, Sadao Umezu, Fukuhisa Matsuda, Masao Ushio | 1989-11-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882519 | Discharge electrode material composed of yttrium and rhenium or ruthenium | Hiroshi Mikita, Sadao Umezu, Fukuhisa Matsuda, Masao Ushio | 1989-11-21 |