Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700296 | Azo compound and a polarizing film containing the same | Kazuya Ogino, Narutoshi Hayashi, Takashi Omura, Setsuko Yamamoto | 1997-12-23 |
| 5659020 | Tetrakisazo compound and a polarizing film containing the same | Kazuya Ogino, Narutoshi Hayashi, Takashi Omura | 1997-08-19 |
| 4935500 | Metallized formazan compounds having two fiber reactive groups linked by n-alkyl-containing group | Takashi Omura, Katsumasa Otake, Yasuo Tezuka | 1990-06-19 |
| 4299771 | Process for producing anthraquinone compounds | Akira Takeshita, Makoto Hattori | 1981-11-10 |