Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7198457 | Single-shaft multistage pump | Yoshimasa Chiba, Choichi Ishikawa, Daimon Abe | 2007-04-03 |
| 4909705 | Multi-stage diffuse-type centrifugal pump | Akihisa Okada | 1990-03-20 |