Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886558 | Method for heat-treating steel rail head | Toyokazu Teramoto, Akio Fujibayashi, Kozo Fukuda, Mashiro Ueda, Shinichi Nagahashi +5 more | 1989-12-12 |
| 4873059 | Pipette device | Keishiro Kido | 1989-10-10 |
| 4842712 | Device for measuring ion activity | Osamu Seshimoto, Masaaki Terashima | 1989-06-27 |
| 4801434 | Dual pipette device | Keishiro Kido, Takashi Koizumi, Osamu Seshimoto | 1989-01-31 |
| 4799601 | Translucent alumina ceramic tube and a process for making same | Shunzo Shimai, Yawara Ando, Takashi Koseki | 1989-01-24 |