Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6653454 | Formazane compounds and method of dyeing using the same | Mariko Umeda, Hideshiro Nomura, Eiichi Ogawa | 2003-11-25 |
| 6648952 | Anthrapyridone compound, aqueous magenta ink compositions and ink-jet recording method | Hiroyuki Matsumoto, Yasuo Murakami, Junko Yoshioka, Katsunori Fujii | 2003-11-18 |
| 6645283 | Anthrapyridone compounds, water-based magenta ink composition, and method of ink-jet printing | Hiroyuki Matsumoto, Takafumi Fujii, Hirokazu Kitayama | 2003-11-11 |
| 6589325 | Phthalocyanine compounds, water-base ink compositions and colored products | Yoshinori Katoh, Hirokazu Kitayama | 2003-07-08 |
| 6530985 | Water-based magenta ink composition and method of ink-jet recording | Hiroyuki Matsumoto, Katsunori Fujii, Yoshiki Akatani | 2003-03-11 |