Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6411316 | Image display medium, image-forming method, image-forming apparatus and initializer | Kiyoshi Shigehiro, Yoshinori Machida, Nobuyuki Nakayama, Shota Oba, Motohiko Sakamaki +2 more | 2002-06-25 |
| 6407763 | Image display medium, image-forming method and image-forming apparatus capable of repetitive writing on the image display medium | Yoshinori Machida, Kiyoshi Shigehiro, Nobuyuki Nakayama, Shota Oba, Motohiko Sakamaki +2 more | 2002-06-18 |