Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6909197 | Cement distributing vehicle | Kikuo Kaga, Haruo Kaga, Kenji Umeda, Shunsaku Wakabayashi | 2005-06-21 |
| 6826448 | Cement distribution system | Kikuo Kaga, Haruo Kaga, Kenji Umeda, Shunsaku Wakabayashi | 2004-11-30 |