Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826931 | Tablet for resin-molding semiconductor devices | Sueyosi Tanaka, Yasutugu Tutumi, Yutaka Morita | 1989-05-02 |
| 4812420 | Method of producing a semiconductor device having a light transparent window | Sadamu Matsuda, Takashi Takahama | 1989-03-14 |