Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9289749 | Polycondensation catalyst for producing polyester and production of polyester using the polycondensation catalyst | Keiichi Tabata, Akihiro Kamon, Keiichi Ikegawa | 2016-03-22 |
| 8901029 | Polycondensation catalyst for producing polyester and method for producing polyester using the same | Keiichi Tabata, Akihiro Kamon, Keiichi Ikegawa | 2014-12-02 |
| 5977019 | Multi-color heat-sensitive recording material and thermal recording method | Keisuke Ozeki, Yasuhiro Ogata | 1999-11-02 |