| 6604611 |
Condition-based, auto-thresholded elevator maintenance |
Jun Liu, Juan A. Lence-Barriero, Harry Huang |
2003-08-12 |
| 6543583 |
Elevator auditing with recommended action, reason and severity in maintenance messages |
Juan A. Lence Barreiro |
2003-04-08 |
| 6516923 |
Elevator auditing and maintenance |
Juan A. Lence Barreiro |
2003-02-11 |
| 6484125 |
Service information derived from elevator operational parameters |
Harry Huang, Juan A. Lence Barreiro, Ronald R. Pepin, Gary L. Freeland, Robert H. Mashiak |
2002-11-19 |
| 6439350 |
Differentiating elevator car door and landing door operating problems |
Juan A. Lence Barreiro, Jun Liu |
2002-08-27 |
| 6330936 |
Elevator behavior reported in occurrence-related groups |
Juan A. Lence Barreiro, Harry Huang, Gary L. Freeland, Robert H. Mashiak |
2001-12-18 |
| 6325179 |
Determining elevator brake, traction and related performance parameters |
Juan A. Lence Barreiro, Harry Huang |
2001-12-04 |