Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685931 | Method of manufacturing an accessory tile | Yoshinori Kakamu, Shukichi Kakamu | 1997-11-11 |
| 5670228 | Tile having a pattern and its manufacturing method | Yoshinori Kakamu, Shukichi Kakamu | 1997-09-23 |