Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7260451 | Air conditioner management system and converter unit therefor | Masanori Takagi, Yukio Ito, Makoto Itoh | 2007-08-21 |
| 6925420 | Service system for air conditioner and server system for monitoring center | Makoto Ito, Tomotsune Taira, Masanori Takagi, Yukio Ito | 2005-08-02 |
| 6823288 | Service system for air conditioner and server system for monitoring center | Makoto Ito, Tomotsune Taira, Masanori Takagi, Yukio Ito | 2004-11-23 |
| 6647317 | Air conditioner management system | Masanori Takagi, Yukio Ito, Makoto Itoh | 2003-11-11 |
| 6643611 | Service system for air conditioner and server system for monitoring center | Makoto Ito, Tomotsune Taira, Masanori Takagi, Yukio Ito | 2003-11-04 |