Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5163503 | Multi-type air conditioner with dew formation protection function in distribution unit | — | 1992-11-17 |
| 5123254 | Air conditioning apparatus connecting one outdoor unit with several indoor units through several refrigerant tubes and signal conductors | Norihisa Hasegawa | 1992-06-23 |
| 5050397 | Air conditioner apparatus with starting control for parallel operated compressors based on high pressure detection | Akiyoshi Sugiyama, Norihisa Hasegawa | 1991-09-24 |
| 4932220 | Air conditioner system with optimum high pressure control function | — | 1990-06-12 |