Inventor · disambiguated record
Helmut Schroder-Brumloop
Also filed as: SCHROEDER-BRUMLOOP H · SCHROEDER-BRUMLOOP H L · SCHROEDER-BRUMLOOP HELMUT · SCHROEDER-BRUMLOOP HELMUT L
18 granted patents·492 citations·filing 1991–2006
96Inventor score
Top patents by PatentIndex Score
18 records- 0195US5711112ADouble-drive automatic sliding door operatorOTIS ELEVATOR CO·Filed 1996·Granted Jan 27, 1998·119 cites·5 claims
- 0294US6269910B1Elevator rescue systemOTIS ELEVATOR CO·Filed 2000·Granted Aug 7, 2001·46 cites·11 claims
- 0394US6196355B1Elevator rescue systemOTIS ELEVATOR CO·Filed 1999·Granted Mar 6, 2001·69 cites·21 claims
- 0489US6138799ABelt-climbing elevator having drive in counterweightOTIS ELEVATOR CO·Filed 1998·Granted Oct 31, 2000·45 cites·5 claims
- 0584US6193018B1Belt-climbing elevator having drive in counterweightOTIS ELEVATOR CO·Filed 2000·Granted Feb 27, 2001·22 cites·4 claims
- 0675US5921351AModular drive mechanism for a passenger conveyorOTIS ELEVATOR CO·Filed 1997·Granted Jul 13, 1999·30 cites·16 claims
- 0763US5587565AMethod for controlling elevator doorsOTIS ELEVATOR CO·Filed 1994·Granted Dec 24, 1996·25 cites·3 claims
- 0862US8448751B2Elevator door systemTONNA CHRISTIAN G·Filed 2006·Granted May 28, 2013·5 cites·11 claims
- 0956US5831227ADifferential magnetic alignment of an elevator and a landingOTIS ELEVATOR CO·Filed 1996·Granted Nov 3, 1998·19 cites·3 claims
- 1053US5682022AActive stabilization of serially connected capacitors in high voltage applicationsOTIS ELEVATOR CO·Filed 1995·Granted Oct 28, 1997·24 cites·22 claims
- 1152US6186281B1Remote storage and reset of elevator overspeed switchOTIS ELEVATOR CO·Filed 1999·Granted Feb 13, 2001·16 cites·7 claims
- 1251US5272398ADriver for power field-controlled switches with refreshed power supply providing stable on/off switchingOTIS ELEVATOR CO·Filed 1991·Granted Dec 21, 1993·12 cites·5 claims
- 1347US7246688B2Elevator door systemOTIS ELEVATOR CO·Filed 1998·Granted Jul 24, 2007·16 cites·21 claims
- 1443US5841083ABlocked door detection for an elevator systemOTIS ELEVATOR CO·Filed 1996·Granted Nov 24, 1998·12 cites·8 claims
- 1540US5367240ALow cost current sensor for fast-switching inverter applicationsOTIS ELEVATOR CO·Filed 1992·Granted Nov 22, 1994·11 cites·2 claims
- 1638US5821478AGeneration of an elevator door close warningOTIS ELEVATOR CO·Filed 1996·Granted Oct 13, 1998·9 cites·19 claims
- 1737US5491405ALevel conversion of AC or DC voltage with noise rejection and low power consumptionOTIS ELEVATOR CO·Filed 1994·Granted Feb 13, 1996·5 cites·8 claims
- 1835US6161656ASpeed and direction indicator for elevator systemsOTIS ELEVATOR CO·Filed 1999·Granted Dec 19, 2000·7 cites·11 claims
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