Issued Patents All Time
Showing 1–25 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6306550 | Color filters | Akio Karasawa, Kenichi Sugimoto | 2001-10-23 |
| 6242651 | Process for the preparation of N,N'-dialkylalkanediamines | Yasuhiro Takano, Kaoru Sakadera, Jyoji Morisaki, Kunihiro Yamada, Hideki Mizuta | 2001-06-05 |
| 6203725 | Luminescent compound for controlling traveling and method for controlling traveling using the same | Akira Ogiso, Yasuhisa Fujii, Kyozo Kurita, Masataka Iwata, Shizuo Kuroda | 2001-03-20 |
| 6051360 | Dyestuffs and resin compositions | Akio Karasawa | 2000-04-18 |
| 5952477 | Azo compound and polarizing film | Tsutami Misawa, Akira Ogiso, Rihoko Imai | 1999-09-14 |
| 5948597 | Dyes for color filters and photosensitive resist resin composition containing the same | Akio Karasawa, Kenichi Sugimoto | 1999-09-07 |
| 5789137 | Dyes for color filters and photosensitive resist resin composition containing the same | Akio Karasawa, Kenichi Sugimoto | 1998-08-04 |
| 5773172 | Color filter having novel dyestuff | Akio Karasawa | 1998-06-30 |
| 5750229 | Phthalocyanine compound and optical recording medium containing it | Takahisa Oguchi, Hideki Umehara, Kenichi Sugimoto, Ryu Oi | 1998-05-12 |
| 5750599 | Quinophthalone compounds and polarizing films using same | Akira Ogiso, Rihoko Imai, Tsutami Misawa, Ryu Oi, Yoriaki Matsuzaki | 1998-05-12 |
| 5751483 | Color filter having polarizability | Tsutami Misawa, Akira Ogiso, Rihoko Imai | 1998-05-12 |
| 5739298 | Water-soluble azo compounds | Tsutami Misawa, Akira Ogiso, Rihoko Imai | 1998-04-14 |
| 5698682 | Azo compounds and polarizing films using the compounds | Yoriaki Matsuzaki, Ryu Oi, Rihoko Imai, Keisuke Takuma | 1997-12-16 |
| 5695911 | Optical recording medium | Akio Karasawa, Kenichi Sugimoto, Takahisa Oguchi, Shin Aihara | 1997-12-09 |
| 5659039 | Quinophthalone compounds | Akira Ogiso, Rihoko Imai, Tsutami Misawa, Ryu Oi, Yoriaki Matsuzaki | 1997-08-19 |
| 5646273 | Phthalocyanine compound and optical recording medium containing it | Takahisa Oguchi, Hideki Umehara, Kenichi Sugimoto, Ryu Oi | 1997-07-08 |
| 5639809 | Azo compounds and polarizing films using the compounds | Yoriaki Matsuzaki, Ryu Oi, Rihoko Imai, Keisuke Takuma | 1997-06-17 |
| 5618868 | Polarizing film of a hydrophilic polymer film containing a novel azo compound | Tsutami Misawa, Akira Ogiso, Rihoko Imai | 1997-04-08 |
| 5582774 | Alkylphthalocyanine near-infrared absorbers and recording/display materials using the same | Katashi Enomoto, Takahisa Oguchi, Tsutomu Nishizawa | 1996-12-10 |
| 5578419 | Dyes for color filters, and photosensitive resist resin composition containing the same | Akio Karasawa, Kenichi Sugimoto | 1996-11-26 |
| 5548073 | Water-soluble azo compounds | Tsutami Misawa, Akira Ogiso, Rihoko Imai | 1996-08-20 |
| 5482804 | Resin composition for color filter | Akio Karasawa, Kenichi Sugimoto | 1996-01-09 |
| 5482986 | Benzopyran compound and use of the same | Akira Ogiso, Tsutami Misawa, Rihoko Imai | 1996-01-09 |
| 5449587 | Compact disk-write once type optical recording media | Takahisa Oguchi, Katashi Enomoto, Tsutomu Nishizawa | 1995-09-12 |
| 5446142 | Phthalocyanine and naphthalocyanine light-absorbing compound and optical recording medium containing same | Takahisa Oguchi, Kenichi Sugimoto, Ryu Oi, Hideki Umehara, Shin Aihara | 1995-08-29 |