Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7692333 | Adjustable speed drive system for primary loop recirculation pump | Yukihiro Katayama, Masashi Sugiyama, Hirohisa Satomi | 2010-04-06 |
| 7429807 | Adjustable speed drive system for primary loop recirculation pump | Yukihiro Katayama, Masashi Sugiyama, Hirohisa Satomi | 2008-09-30 |