Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686398 | Additive for lubricant or fuel, lubricating oil composition or fuel composition containing it, and substituted hydroxyaromatic ester derivative | Hiroaki Koshima, Harutomo Ikeda, Masahisa Gotoh | 1997-11-11 |
| 5326488 | Mannich reaction product and process for producing the same and use of the product | Hiroaki Koshima, Hirotaka Yamasaki, Masahisa Gotoh | 1994-07-05 |
| 5244588 | Overbased sulfurized alkaline earth metal phenates and process for preparing same | Hiroaki Koshima, Takeshige Nakano | 1993-09-14 |
| 4755317 | Working fluid for traction drive | Toshiyuki Tsubouchi, Hitoshi Hata | 1988-07-05 |
| 4703124 | Process for introduction of styrenes in side chain of substituted aromatic compounds | Toshiyuki Tsubouchi, Nobuaki Shimizu | 1987-10-27 |
| 4689436 | Process for producing alkenyl-aromatic hydrocarbon derivatives | Yoshinori Saito, Toshiyuki Tsubouchi | 1987-08-25 |