Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882033 | Electrochemical device | Yoshihiko Mizutani | 1989-11-21 |
| 4859307 | Electrochemical gas sensor, and method for manufacturing the same | Hitoshi Nishizawa | 1989-08-22 |
| 4814059 | Electrochemical device having a heater and leak protection electrode | Hitoshi Nishizawa | 1989-03-21 |
| 4795544 | Electrochemical gas sensor | Hitoshi Nishizawa | 1989-01-03 |