Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5381097 | Liquid leakage detector line | Akihiro Ishihara, Tadaaki Masui, Yoshinori Kawakami, Takahisa Okumura, Masuo Ishizaka | 1995-01-10 |
| 5196898 | Optical liquid sensor, a method of manufacturing the same, and an automotive oil/battery checker employing the sensor | Kunimitsu Tamura, Akihiro Ishihara, Tadaaki Masui | 1993-03-23 |