CenTrak, Inc.
36Patents
33Active
36Granted
53Portfolio score
Filing activity: Oct 22, 1998 → Dec 29, 2022 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8139945B1 | Methods and systems for synchronized infrared real time location | Electricity | 120 | Active |
| US8866620B2 | System and method for fall prevention and detection | Human Necessities | 76 | Active |
| US6115481A | User modifiable land management zones for the variable application of substances thereto | Emerging Cross-Sectional Technologies | 54 | Expired |
| US6266432A | User modifiable land management zones for the variable application of substances thereto | Emerging Cross-Sectional Technologies | 53 | Expired |
| US6434258B1 | User modifiable geographical zones for the variable application of substances thereto | Emerging Cross-Sectional Technologies | 36 | Expired |
| US8604909B1 | Methods and systems for synchronized ultrasonic real time location | Electricity | 30 | Active |
| US8633806B2 | Two directional information flow in real time location sensing RFID networks | Emerging Cross-Sectional Technologies | 20 | Active |
| US8018584B1 | Virtual walls in infrared based RTLS systems | Physics | 19 | Active |
| US9219984B1 | System and method of super synchronization in RTLS | Electricity | 15 | Active |
| US9341700B2 | System and method for multimode Wi-Fi based RTLS | Physics | 13 | Active |
| US9298958B1 | System and method of enhanced RTLS for improved performance in wireless networks | Emerging Cross-Sectional Technologies | 10 | Active |
| US9306665B1 | System and method for infrared signal-strength RTLS | Electricity | 10 | Active |
| US10966056B1 | Wireless location system | Electricity | 7 | Active |
| US10126407B1 | Methods and systems for synchronized ultrasonic real time location | Electricity | 7 | Active |
| US9231699B1 | Methods and systems for synchronized infrared real time location | Electricity | 6 | Active |
| US8907764B1 | Methods and systems for synchronized ultrasonic real time location | Electricity | 6 | Active |
| US9622030B1 | Methods and systems for synchronized ultrasonic real time location | Electricity | 6 | Active |
| US9510146B1 | System and method of super synchronization in RTLS | Electricity | 6 | Active |
| US9794904B1 | System and method of super synchronization in RTLS | Electricity | 4 | Active |
| US9589462B1 | System and method for CCX based sensor data tracking with highly assured data delivery | Electricity | 4 | Active |
| US9939512B1 | System and method of fast transition detection in asynchronous RTLS | Physics | 3 | Active |
| US10094922B1 | Hybrid height and location estimation in RTLS | Physics | 1 | Active |
| US10152862B2 | Anti-theft security device and perimeter detection system | Physics | 1 | Active |
| US10593187B2 | Apparatus comprising a bed proximity-determining system | Physics | 1 | Active |
| US9965657B1 | Disposable patient tag | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.