Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4401410 | Diagonal-flow fan wheel with blades of developable surface shape | — | 1983-08-30 |
| 4362468 | Single curvature fan wheel of a diagonal flow fan | Chosei Harada, Masao Nakano | 1982-12-07 |
| 4358244 | Single curvature fan wheel of a diagonal flow fan | Chosei Harada, Masao Nakano | 1982-11-09 |
| 4274810 | Diagonal-flow fan wheel with blades of developable surface shape | — | 1981-06-23 |
| 4227868 | Single-curvature fan wheel of diagonal-flow fan | Chosei Harada, Masao Nakano | 1980-10-14 |
| 4218190 | Flat-bladed fan wheel of diagonal-flow fan | Masao Nakano | 1980-08-19 |