Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861189 | System for paving inclined and/or curved surfaces | Mitsuo Fukukawa, Masayuki Yazawa, Kazumitsu Asai, Yoshiharu Okamoto | 1989-08-29 |
| 4854769 | System for paving inclined and/or curved surfaces | Mitsuo Fukukawa, Masayuki Yazawa, Kazumitsu Asai, Yoshiharu Okamoto | 1989-08-08 |