Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832893 | Method for producing a PLZT compound | Michio Hisanaga, Masataka Naito, Shinichi Shirasaki | 1989-05-23 |
| 4804164 | Flow control device | Masahiko Nakazawa, Kazuo Tsukada | 1989-02-14 |