Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9469596 | Method for removing quaternary salt | Kiyoshi Takumi, Naoki SASAGAWA | 2016-10-18 |
| 9045446 | Method for producing epoxy compound | Naoki SASAGAWA, Kiyoshi Takumi | 2015-06-02 |
| 8742145 | Method for manufacturing an epoxy compound and method for epoxidizing a carbon—carbon double bond | Kiyoshi Takumi, Naoki SASAGAWA, Yoshihiro Kon, Yutaka Ono, Kazuhiko Sato | 2014-06-03 |
| 5512641 | Aromatic polyimine and process for preparing the same, and aromatic oligoimine used for aromatic polyimine and process for preparing the same | — | 1996-04-30 |