Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863583 | Electrode structure of an oxygen sensing element | Hiroshi Kurachi, Nobuhide Kato | 1989-09-05 |
| 4857165 | Oxygen sensing element and process of manufacturing the same | Takumi Narahara | 1989-08-15 |
| 4851105 | Oxygen sensing element and method for producing the same | Takumi Narahara | 1989-07-25 |
| 4835009 | Method of producing oxygen sensing element | Takumi Narahara | 1989-05-30 |