Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875981 | Oxygen analyzing method and device | Akinobu Hattori, Yuichi Sasaki | 1989-10-24 |
| 4875990 | Oxygen concentration measuring device | Toru Kodachi | 1989-10-24 |
| 4857164 | Oxygen analyzer | Toru Kodachi | 1989-08-15 |
| 4851103 | Moisture measuring device for high temperature gas | Toru Kodachi | 1989-07-25 |