Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6677273 | Erasable recording material capable of inputting additional information written thereon and information recording system and information recording method using the recording material | Masafumi Torii, Hiroaki Matsui, Kyoji Tsutsui, Hitoshi Hattori, Toshiyuki Furuta | 2004-01-13 |