Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6235064 | Dye containing polarizing film | Narutoshi Hayashi, Setsuko Yamamoto, Takashi Omura | 2001-05-22 |
| 5700296 | Azo compound and a polarizing film containing the same | Kaneo Yokoyama, Narutoshi Hayashi, Takashi Omura, Setsuko Yamamoto | 1997-12-23 |
| 5659020 | Tetrakisazo compound and a polarizing film containing the same | Kaneo Yokoyama, Narutoshi Hayashi, Takashi Omura | 1997-08-19 |
| 5609796 | Dye containing polarizing film | Setsuko Yamamoto, Narutohsi Hayashi, Takashi Omura | 1997-03-11 |
| 5536819 | Trisazo compounds imparting deep black color a method for dyeing by using them and an ink containing them | Yuriko Tamura, Mahito Fujita, Takashi Omura, Hideo Kawashita, Koji Aburada | 1996-07-16 |
| 5530105 | Tetraskisazo compound and ink containing the compound | Satoshi Yamazaki, Hideo Kawashita, Koji Aburada, Yuriko Tamura, Takashi Omura | 1996-06-25 |
| 5489671 | Trisazo compound imparting black color, method for dyeing by using it and ink containing it | Yuriko Tamura, Takashi Omura, Mahito Fujita, Hideo Kawashita, Koji Aburada | 1996-02-06 |
| 5488101 | Trisazo compounds, method for dyeing fiber materials, paper or leather using the same and inks containing the same | Kingo Akahori, Naoki Harada, Yutaka Kayane, Hideo Kawashita, Mituhiro Ohta | 1996-01-30 |
| 5480977 | Disazo dyes having aminobenzoylamino group | Narutoshi Hayashi, Takashi Omura | 1996-01-02 |
| 5354512 | Dye-containing polarizing film | Setsuko Aoki, Koji Higashi | 1994-10-11 |
| 5183501 | Ink compositions for ink jet recording | Hideo Kawashita, Mituhiro Ohta | 1993-02-02 |
| 5180817 | Trisazo compounds and use thereof | Kingo Akahori, Naoki Harada | 1993-01-19 |
| 5149366 | Disazo compound and ink composition containing the same | Hideo Kawashita, Mituhiro Ohta | 1992-09-22 |