Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7572877 | Modified cyclic aliphatic polyamine | Takeshi Koyama, Hisayuki Kuwahara, Masatoshi Echigo | 2009-08-11 |
| 7301053 | Modified cyclic aliphatic polyamine | Takeshi Koyama, Hisayuki Kuwahara, Masatoshi Echigo | 2007-11-27 |
| 6908982 | Amino composition and process for producing the same | Hisayuki Kuwahara, Masatoshi Echigo | 2005-06-21 |
| 6562934 | Amino compound and process for producing the same | Shinichi Yonehama | 2003-05-13 |
| 4541958 | Hardening agent for epoxy resins comprising an amideamine compound | Akira Miyamoto, Katsuo Sato, Masahiro Kurokawa | 1985-09-17 |