Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11612882 | Polycondensation catalyst for producing polyester and production of polyester using the same | Yuhei Soga | 2023-03-28 |
| 9289749 | Polycondensation catalyst for producing polyester and production of polyester using the polycondensation catalyst | Keiichi Tabata, Keiichi Ikegawa, Jun Naito | 2016-03-22 |
| 9074047 | Polycondensation catalyst for producing polyester and method for producing the same and method for producing polyester | Hiromitsu Shimizu, Keiichi Tabata | 2015-07-07 |
| 8901029 | Polycondensation catalyst for producing polyester and method for producing polyester using the same | Keiichi Tabata, Jun Naito, Keiichi Ikegawa | 2014-12-02 |
| 8247345 | Polycondensation catalyst for producing polyester and method for producing the same and method for producing polyester | Hiromitsu Shimizu, Keiichi Tabata | 2012-08-21 |