Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8816040 | Polymer dye | Junpei Kuwabara, Hikaru Yamada, Nobutaka Fujimoto | 2014-08-26 |
| 5540999 | EL element using polythiophene | Takakazu Yamamoto, Tetsushi Inoue, Kenji Nakaya | 1996-07-30 |
| 5367038 | Polyisoquinolinediyls and uses thereof | Takakazu Yamamoto | 1994-11-22 |
| 5310829 | Quaternary poly(iso) quinolinediyl and preparation thereof | Takakazu Yamamoto | 1994-05-10 |
| 5244992 | Poly(iso)quinolinediyls and preparation and use thereof | Takakazu Yamamoto | 1993-09-14 |