Patents per Year
Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5982125 | Automatic door test apparatus | Anthony R. Ranaudo, Dwight Edward Reed | 1999-11-09 | $22,385,000 |
| 5950767 | Optical door lock | — | 1999-09-14 | $22,289,000 |
| 5817993 | Monitoring of elevator door reversal data | Patrick Lusaka, Ronald R. Pepin | 1998-10-06 | $12,422,000 |
| 5797472 | Reactive governor | John K. Salmon | 1998-08-25 | $27,740,000 |
| 5780787 | Monitoring of manual elevator door systems | Jean Manuel Sanches | 1998-07-14 | $10,987,000 |
| 5760350 | Monitoring of elevator door performance | Ronald R. Pepin, Robert H. Mashiak, Patrick Lusaka, Jean-Marie Rennetaud | 1998-06-02 | $14,106,000 |
| 5594219 | Elevator position apparatus | Daniel S. Williams, Christopher H. Koenig | 1997-01-14 | $12,910,000 |
| 5569888 | Ultrasonic elevator door safety system | John K. Salmon | 1996-10-29 | $22,050,000 |
| 5505280 | Elevator door system | John K. Salmon, Jean-Pierre Bourbon, Antoine Fritsch, Herve Saillio | 1996-04-09 | $10,962,000 |
| 5431251 | Elevator car | John K. Salmon, Antoine Fritsch | 1995-07-11 | $3,059,000 |