Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10697650 | Automatic balance valve control | Philip J. Smith, Wai-Leung Ha, Dean Richard Jepson, Chung Ming Cheng, Kwok Wa Kenny Kam +2 more | 2020-06-30 |
| 7941530 | Thermostat status notification through a network | Wai-Leung Ha, Kairy Kai Lei, Gordon Qian | 2011-05-10 |