Patents by Inventor Robert U. Liu

Robert U. Liu 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).

  • Stylus with touch input and compressive force sensors
    Patent number: 11360616
    Abstract: A stylus or other tactile-based input device can receive different types of tactile input from a user. The tactile input sensing functions can be performed by a touch input sensor, such as a capacitive sensing device, and a compressive force sensor, such as a capacitive gap sensor. A touch input sensor can be integrated into an input device in a low profile form and overlap the compressive force sensor so that both touch input and compressive force input can be detected in the same regions of the stylus. Both types of tactile input can be received at the user's natural grip location.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: June 14, 2022
    Assignee: APPLE INC.
    Inventors: Robert M. Proie, Robert U. Liu, Wing Kong Low, Nan Wang