Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5334774 | Process for purifying phenol | Kayoko Kogure, Kazuo Kimura, Masaaki Toma, Eiji IMAMURA | 1994-08-02 |
| 5276193 | Process for preparing N-alkyl-substituted aminophenols | Hiroshi Maki, Hiroshi Shimizu, Yoshiaki Ito | 1994-01-04 |
| 5202485 | Process for preparing N-alkylaminophenols | Hiroshi Maki, Horishi Shimizu, Yoshiaki Ito | 1993-04-13 |