Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4902400 | Gas sensing element | Jun Usami, Takeshi Kajita | 1990-02-20 |
| 4875981 | Oxygen analyzing method and device | Jun Usami, Yuichi Sasaki | 1989-10-24 |
| 4736618 | Sensor probe | Jun Usami, Hiroshi Yamada | 1988-04-12 |