Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6524377 | Reversible thermosensitive coloring composition and recording material using the composition and recording method using the recording material | Hiroaki Matsui, Masaru Shimada | 2003-02-25 |
| 6503868 | Reversible thermosensitive coloring composition and recording material using the composition and recording method using the recording material | Hiroaki Matsui, Masaru Shimada | 2003-01-07 |