Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821606 | Plastic sheet having creasing lines and creasing-line-forming blade for plastic sheet | — | 2004-11-23 |
| 6558775 | Plastic sheet having creasing lines and creasing line-forming blade for plastic sheet | — | 2003-05-06 |
| 6391424 | Plastic sheet having creasing lines | — | 2002-05-21 |