Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5952477 | Azo compound and polarizing film | Tsutami Misawa, Akira Ogiso, Hisato Itoh | 1999-09-14 |
| 5750599 | Quinophthalone compounds and polarizing films using same | Akira Ogiso, Tsutami Misawa, Ryu Oi, Yoriaki Matsuzaki, Hisato Itoh | 1998-05-12 |
| 5751483 | Color filter having polarizability | Hisato Itoh, Tsutami Misawa, Akira Ogiso | 1998-05-12 |
| 5739298 | Water-soluble azo compounds | Tsutami Misawa, Akira Ogiso, Hisato Itoh | 1998-04-14 |
| 5698682 | Azo compounds and polarizing films using the compounds | Yoriaki Matsuzaki, Ryu Oi, Keisuke Takuma, Hisato Itoh | 1997-12-16 |
| 5659039 | Quinophthalone compounds | Akira Ogiso, Tsutami Misawa, Ryu Oi, Yoriaki Matsuzaki, Hisato Itoh | 1997-08-19 |
| 5639809 | Azo compounds and polarizing films using the compounds | Yoriaki Matsuzaki, Ryu Oi, Keisuke Takuma, Hisato Itoh | 1997-06-17 |
| 5618868 | Polarizing film of a hydrophilic polymer film containing a novel azo compound | Tsutami Misawa, Akira Ogiso, Hisato Itoh | 1997-04-08 |
| 5548073 | Water-soluble azo compounds | Tsutami Misawa, Akira Ogiso, Hisato Itoh | 1996-08-20 |
| 5482986 | Benzopyran compound and use of the same | Akira Ogiso, Tsutami Misawa, Hisato Itoh | 1996-01-09 |
| 5446135 | Sulfonyloxy substituted tris-azoaryl dyes and copper complex salts thereof and polarizing films dyed therewith | Tsutami Misawa, Akira Ogiso, Hisato Itoh | 1995-08-29 |
| 5423100 | Water-soluble azo compounds and polarizing films using the compounds | Tsutami Misawa, Akira Ogiso, Hisato Itoh | 1995-06-13 |
| 5318856 | Water-soluble azo dyes and polarizing films using the dyes | Tsutami Misawa, Akira Ogiso, Hisato Itoh | 1994-06-07 |