Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866460 | Ink jet recording head and base plate therefor | — | 1989-09-12 |
| 4860033 | Base plate having an oxidation film and an insulating film for ink jet recording head and ink jet recording head using said base plate | Hirokazu Komuro, Koichi Sato, Kazuaki Masuda | 1989-08-22 |