Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688390 | Oxygen concentration sensor | Isao Watanabe, Toshihiro Sakawa | 1997-11-18 |
| 5627306 | Oxygen concentration sensor | Isao Watanabe | 1997-05-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5688390 | Oxygen concentration sensor | Isao Watanabe, Toshihiro Sakawa | 1997-11-18 |
| 5627306 | Oxygen concentration sensor | Isao Watanabe | 1997-05-06 |