Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5156010 | Defrost control method for a heat pump | Tetsuo Inoue, Masayuki Shimizu, Hikaru Katsuki, Yuji Tsuchiyama | 1992-10-20 |
| 5131455 | Low power electrical fan motor and heater thermal protection circuit for air conditioner | Yuji Tsuchiyama, Masayuki Shimizu | 1992-07-21 |