Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5562969 | Decorative board | Keiji Sakamoto, Yoshio Takahashi | 1996-10-08 |
| RE34743 | Decorative plate | Kazuo Ishige, Keizo Ogata | 1994-09-27 |
| 5019440 | Decorative plate | Kazuo Ishige, Keizo Ogata | 1991-05-28 |