Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7474226 | Smoke detector calibration | Zhexin Mi | 2009-01-06 |
| 7224284 | Smoke detector calibration | Zhexin Mi | 2007-05-29 |
| 6756905 | Photoelectric smoke detector and chamber therefor | Zhexin Mi | 2004-06-29 |
| 6161958 | Self diagnostic heat detector | Zhexin Mi | 2000-12-19 |
| 5719557 | Photoelectric smoke detector | Zhexin Mi | 1998-02-17 |
| 5523743 | Self-diagnostic smoke detector | Zhexin Mi, John Peterson | 1996-06-04 |
| 4614968 | Contrast smoke detector | Stephen Marchetti, Aaron A. Galvin | 1986-09-30 |