Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5915299 | Stamp making unit and package therefor | Hiroshi Kuriyama, Kozo Gyoda | 1999-06-29 |
| 5771808 | Stamp material, stamp making method using the stamp material and stamp manufactured by the stamp making method | Hiroshi Kuriyama | 1998-06-30 |
| 5669304 | Stamp unit and method of preparing stamp unit | Hiroshi Kuriyama, Haruyuki Miyasaka, Hideki Horiuochi | 1997-09-23 |