Helmut Schroder-Brumloop
18Patents
9h-index
26Co-inventors
68Inventor score
Filing activity: Sep 12, 1991 → Apr 4, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5711112A | Double-drive automatic sliding door operator | Fixed Constructions | 65 | Expired |
| US6196355A | Elevator rescue system | Performing Operations; Transporting | 34 | Expired |
| US6138799A | Belt-climbing elevator having drive in counterweight | Performing Operations; Transporting | 22 | Expired |
| US6269910A | Elevator rescue system | Performing Operations; Transporting | 22 | Expired |
| US6193018A | Belt-climbing elevator having drive in counterweight | Performing Operations; Transporting | 14 | Expired |
| US5587565A | Method for controlling elevator doors | Physics | 12 | Expired |
| US5921351A | Modular drive mechanism for a passenger conveyor | Performing Operations; Transporting | 11 | Expired |
| US6186281A | Remote storage and reset of elevator overspeed switch | Performing Operations; Transporting | 9 | Expired |
| US5831227A | Differential magnetic alignment of an elevator and a landing | Performing Operations; Transporting | 9 | Expired |
| US7246688B2 | Elevator door system | Fixed Constructions | 7 | Expired |
| US5682022A | Active stabilization of serially connected capacitors in high voltage applications | Electricity | 7 | Expired |
| US5272398A | Driver for power field-controlled switches with refreshed power supply providing stable on/off switching | Electricity | 6 | Expired |
| US5367240A | Low cost current sensor for fast-switching inverter applications | Electricity | 6 | Expired |
| US5841083A | Blocked door detection for an elevator system | Performing Operations; Transporting | 5 | Expired |
| US8448751B2 | Elevator door system | Fixed Constructions | 4 | Active |
| US5821478A | Generation of an elevator door close warning | Performing Operations; Transporting | 4 | Expired |
| US6161656A | Speed and direction indicator for elevator systems | Performing Operations; Transporting | 3 | Expired |
| US5491405A | Level conversion of AC or DC voltage with noise rejection and low power consumption | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.