Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7303292 | Hue variable retroreflective sheet | Shigeo Yukawa | 2007-12-04 |
| 7238643 | Laminated body for printing with temporary display layer and printing method using the same | Shigeo Yukawa, Masanobu Tanaka | 2007-07-03 |