Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6233501 | System for engraving a plurality of gravure rolls | Keisuke Hirai, Tadashi Syudou, Takumi Yoshida | 2001-05-15 |
| 5822078 | System for engraving a plurality of gravure rolls | Keisuke Hirai, Tadashi Syudou, Takumi Yoshida | 1998-10-13 |