Patents by Inventor Ennzhi Chew

Ennzhi Chew has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Millimeter wave radar system for sleep monitoring
    Patent number: 12239456
    Abstract: Systems and methods relating to a millimeter wave radio-frequency (RF) sleep monitoring device are described. The device includes a surface transparent to RF signals through which a radar device enclosed in a housing transmits RF signals. An antenna array is enclosed within the housing and is oriented at a non-zero angle with respect to a vertical axis of the device. The antenna array receives the reflected RF signals through the surface. The reflected RF signals are used to generate sleep monitoring data such as a respiratory rate or motion data associated with a user.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: March 4, 2025
    Assignee: Amazon Technologies, Inc.
    Inventors: Giovanni Mata Magana, Evan Fletcher Dougal, Tianchen Li, Alexander David Savello, Ennzhi Chew