FRABA B.V.
27Patents
25Active
27Granted
51Portfolio score
Filing activity: Oct 28, 2004 → Apr 26, 2021 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9970230B2 | Device for monitoring a machine movement and method for monitoring a machine movement | Fixed Constructions | 9 | Active |
| US8327553B2 | Device and method for determining vertical positions | Performing Operations; Transporting | 8 | Active |
| US10605624B2 | Magnet-based angular displacement measuring system | Electricity | 4 | Active |
| US7616895B2 | Safety edge with status and failure recognition | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8355119B2 | Method for optical measurement of velocities according to the spatial frequency filtering method and sensor for optical measurement of velocities | Physics | 2 | Active |
| US10288450B2 | Magnet-based angular displacement measuring system | Electricity | 2 | Active |
| US7157689B1 | Optical edge sensing system with signal authentication | Fixed Constructions | 2 | Expired |
| US10294708B2 | Servicing and monitoring system for monitoring a door member | Fixed Constructions | 2 | Active |
| US9151865B2 | Method and system for sensing light reflective surfaces in a reflective photo-electric sensing system including a light channeling device and a foreground suppression performance | Physics | 1 | Active |
| US11662201B2 | Calibration apparatus for a rotational angle measuring system | Physics | 1 | Active |
| US11243101B2 | Method for calibrating a rotary encoder, and rotary encoder for determining a corrected angular position | Physics | 1 | Active |
| US11088598B2 | Arrangement of a rotational angle measuring system on a housing | Electricity | 0 | Active |
| US11635287B2 | Magnet-based rotary angle sensor system | Physics | 0 | Active |
| US12000736B2 | Maintenance system and method for maintaining a gate device | Fixed Constructions | 0 | Active |
| US12252934B2 | Drive arrangement for a door device, and door device | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11365990B2 | Sensor device | Physics | 0 | Active |
| US10487563B2 | Maintenance system for monitoring a gate device and method for monitoring a gate device | Fixed Constructions | 0 | Active |
| US11525663B2 | Rotation angle measurement system | Physics | 0 | Active |
| US11460322B2 | Rotational angle measuring system | Physics | 0 | Active |
| US12111183B2 | Angular displacement measuring arrangement, angular displacement measuring system and electric motor | Physics | 0 | Active |
| US11674973B2 | Magnetic-field sensor device with a control unit which electrically controls a switching element | Physics | 0 | Active |
| US10571300B2 | Magnet-based angular displacement measuring system | General | 0 | Revoked |
| US10290204B2 | Maintenance system and method for maintenance of a door arrangement | Physics | 0 | Active |
| US11268835B2 | Sensor unit for a rotational angle measurement system and rotational angle measurement system having such a sensor unit | Physics | 0 | Active |
| US11650086B2 | Method for calibrating a rotary encoder, and rotary encoder | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.