Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875059 | With a liquid supply path having disposed therein a filler providing partial flow blockage that varies upstream of the discharge orefice | — | 1989-10-17 |
| 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 | Atsushi Shiozaki, Hirokazu Komuro, Koichi Sato | 1989-08-22 |