Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868444 | Surface acoustic wave device | Kenichi Shibata, Toshiaki Yokoo, Kousuke Takeuchi, Maruo Kamino | 1989-09-19 |
| 4865939 | Process for preparation of heat-sensitive diazo microcapsule recording material using pressure applying apparatus | Toshimasa Usami, Takayuki Hayashi | 1989-09-12 |
| 4842979 | Black color heat-sensitive diazo microcapsule recording material with benzoylacetic amide coupler | Sadao Ishige, Toshimasa Usami, Hiroshi Kamikawa | 1989-06-27 |