Xiaofu Ma

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San Mateo, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Respiration monitoring based on noisy channel state information (CS...
- Patent number 12,279,190
- Issue date Apr 15, 2025
- Amazon Technologies, Inc.
- Feng Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Proximity detection using device-to-device communication links
- Patent number 11,510,028
- Issue date Nov 22, 2022
- Amazon Technologies, Inc.
- Qinghai Gao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Proximity detection using device-to-device communication links
- Patent number 11,070,945
- Issue date Jul 20, 2021
- Amazon Technologies, Inc.
- Qinghai Gao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE