Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6140280 | Succinimide compound and method for producing it, lubricating oil additive comprising the compound and lubricating oil composition comprising the compound for diesel engine | Tadashi Katafuchi | 2000-10-31 |
| 5244588 | Overbased sulfurized alkaline earth metal phenates and process for preparing same | Hiroaki Koshima, Tomiyasu Minokami | 1993-09-14 |