Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5866233 | Decorative sheet with changeable color or density | Masahiro Oshima, Katumi Shimizu | 1999-02-02 |
| 5723200 | Decorative sheet | Masahiro Oshima, Katumi Shimizu | 1998-03-03 |