Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842708 | Perpendicular magnetic recording medium, method for producing the same, and sputtering device | Sadao Kadokura, Takashi Tomie, Masahiko Naoe | 1989-06-27 |
| 4837536 | Monolithic microwave integrated circuit device using high temperature superconductive material | — | 1989-06-06 |