Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656578 | Monocarbonates, use thereof and process for the preparation of compositions containing monocarbonates | Masahide Tanaka, Tetsuo Hayashi, Takashi Hayashi, Kunihiko Takeuchi, Hajime Oyoshi | 1997-08-12 |
| 5639719 | Lubricating oil containing aromatic ether compounds | Masahide Tanaka, Masayasu Ishibashi, Takashi Hayashi, Hajime Oyoshi, Tetsuo Hayashi | 1997-06-17 |