Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5500657 | Air-bubble detection apparatus of ink jet recording head, and method and apparatus for restoring ink jet recording head | Hitoshi Yauchi, Koichi Sugiyama, Akihiko Miyashita, Tatsuo Sugawara, Hiroyuki Sato +1 more | 1996-03-19 |
| 4777448 | Frequency multiplying circuit | — | 1988-10-11 |