Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6653355 | Treating agent for oil | Tatsuo Kasahara, Tomohiro Shiiya | 2003-11-25 |
| 5903006 | Liquid concentration detecting apparatus | Norihiro Kiuchi, Seiki Tsurudo | 1999-05-11 |
| 5196898 | Optical liquid sensor, a method of manufacturing the same, and an automotive oil/battery checker employing the sensor | Taizo Takatori, Akihiro Ishihara, Tadaaki Masui | 1993-03-23 |
| 4918977 | Liquid leakage detector line | Yasuhiko Takahashi, Nagato Niimura, Keizo Asao, Teruyosi Honoki, Tadaaki Masui +1 more | 1990-04-24 |
| 4513155 | Lubricating oil for diesel engines | Kunihiko Hosonuma | 1985-04-23 |