Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8448751 | Elevator door system | Christian G. Tonna, Christoph Durand | 2013-05-28 |
| 7246688 | Elevator door system | Christian G. Tonna, Christoph Durand | 2007-07-24 |
| 6269910 | Elevator rescue system | Richard N. Fargo, Gerard Sirigu, Joseph J. Barna, Barry G. Blackaby | 2001-08-07 |
| 6196355 | Elevator rescue system | Richard N. Fargo, Gerard Sirigu, Joseph J. Barna, Barry G. Blackaby | 2001-03-06 |
| 6193018 | Belt-climbing elevator having drive in counterweight | Jean Marc Ferrary, Armando Servia, Pascal Rebillard, Richard J. Ericson | 2001-02-27 |
| 6186281 | Remote storage and reset of elevator overspeed switch | Chris Pietrzykowski, Gerard Sirigu, Richard N. Fargo, Randy G. Henley, Gurumurthi Ravishankar | 2001-02-13 |
| 6161656 | Speed and direction indicator for elevator systems | Herbert Horbrugger, Michael Mann | 2000-12-19 |
| 6138799 | Belt-climbing elevator having drive in counterweight | Jean Marc Ferrary, Armando Servia, Pascal Rebillard, Richard J. Ericson | 2000-10-31 |
| 5921351 | Modular drive mechanism for a passenger conveyor | — | 1999-07-13 |
| 5841083 | Blocked door detection for an elevator system | Uwe Schonauer | 1998-11-24 |
| 5831227 | Differential magnetic alignment of an elevator and a landing | Alan Matthew Finn, Jean-Noel Cloux, Peter Herkel, Jean-Pierre Pougny, Armando Servia +1 more | 1998-11-03 |
| 5821478 | Generation of an elevator door close warning | Rudiger Lob | 1998-10-13 |
| 5711112 | Double-drive automatic sliding door operator | Michael Barten, Rudiger Lob, Mustapha Toutaoui | 1998-01-27 |
| 5682022 | Active stabilization of serially connected capacitors in high voltage applications | Sven-Oliver Rainer Kersten | 1997-10-28 |
| 5587565 | Method for controlling elevator doors | Rudiger Lob | 1996-12-24 |
| 5491405 | Level conversion of AC or DC voltage with noise rejection and low power consumption | Andreas Belkner | 1996-02-13 |
| 5367240 | Low cost current sensor for fast-switching inverter applications | Rudiger Lob | 1994-11-22 |
| 5272398 | Driver for power field-controlled switches with refreshed power supply providing stable on/off switching | Sven-Oliver Rainer Kersten | 1993-12-21 |