Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6648952 | Anthrapyridone compound, aqueous magenta ink compositions and ink-jet recording method | Hiroyuki Matsumoto, Yasuo Murakami, Junko Yoshioka, Yasuo Shirasaki | 2003-11-18 |
| 6530985 | Water-based magenta ink composition and method of ink-jet recording | Hiroyuki Matsumoto, Yasuo Shirasaki, Yoshiki Akatani | 2003-03-11 |