Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861454 | Oxygen sensor | Takeshi Shimomura | 1989-08-29 |
| 4798664 | Ion sensor | Shuichiro Yamaguchi, Takeshi Shimomura | 1989-01-17 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861454 | Oxygen sensor | Takeshi Shimomura | 1989-08-29 |
| 4798664 | Ion sensor | Shuichiro Yamaguchi, Takeshi Shimomura | 1989-01-17 |