Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8147953 | Laminate and process for producing the same | Shizuo Kitahara, Tetsuya Toyoshima, Kouichirou Maeda, Junji Kodemura | 2012-04-03 |
| 5111801 | Apparatus for forming slit in rock and concrete surface | — | 1992-05-12 |