Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863859 | Process for preparing optically active glycerol derivatives | Shigeki Hamaguchi, Kiyoshi Watanabe | 1989-09-05 |
| 4861877 | Process for preparing 4-acetoxy-3-hydroxyethylazetidin-2-one derivatives | Kazunori Kan, Noboru Ueyama, Isao Sada, Akimasa Miyama, Kiyoshi Watanabe | 1989-08-29 |
| 4814506 | Process for preparing 3 halogeno-2-hydroxypropyltrimethylammonium halide | Kazuhiko Katayama, Shigeki Hamaguchi, Yoshikazu Kogame, Kiyoshi Watanabe | 1989-03-21 |