Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878933 | Apparatus for fusion splicing optical fibers | Yasukuni Osato, Okosu Watanabe, Masao Suzuki, Osamu Kawata, Koushi Ishihara | 1989-11-07 |
| 4877015 | Multipurpose smokeless roaster | — | 1989-10-31 |
| 4813397 | Charcoal-fired smokeless roaster | — | 1989-03-21 |
| 4812980 | Map display system | Hidetoshi Fujimoto, Kenzo Ito, Kazunori Hanabusa | 1989-03-14 |
| 4800747 | Method of measuring oxygen in silicon | Katsuya Tsuji, Hiroshi Uchihara | 1989-01-31 |
| 4796601 | Smokeless roaster | — | 1989-01-10 |