Patents by Inventor David Y. Tsai

David Y. Tsai 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).

  • Stacked multi-spectral image sensor
    Publication number: 20240079440
    Abstract: A multispectral sensing device includes a first die, including silicon, which is patterned to define a first array of sensor elements, which output first electrical signals in response to optical radiation that is incident on the device in a band of wavelengths less than 1000 nm that is incident on the front side of the first die. A second die has its first side bonded to the back side of the first die and includes a photosensitive material and is patterned to define a second array of sensor elements, which output second electrical signals in response to the optical radiation that is incident on the device in a second band of wavelengths greater than 1000 nm that passes through the first die and is incident on the first side of the second die. Readout circuitry reads the first electrical signals and the second electrical signals serially out of the device.
    Type: Application
    Filed: September 6, 2022
    Publication date: March 7, 2024
    Inventors: Oray O. Cellek, Fei Tan, Gershon Rosenblum, Hong Wei Lee, Cheng-Ying Tsai, Jae Y. Park, Christophe Verove, John L Orlowski, Siddharth Joshi, Xiangli Li, David Coulon, Xiaofeng Fan, Keith Lyon, Nicolas Hotellier, Arnaud Laflaquière
  • Electric switch having improved lever operator arrangement
    Patent number: 5652417
    Abstract: A lever operated rotary reversing switch wherein a lever is snap-fit attached to the switch housing with a portion of the lever inserted under an overhang on the housing to maintain that portion of the lever against the exterior surface. A detent is provided between the overhang and the end of the lever to direct the forces longitudinally in the plane of the lever. A rotor plate located exteriorly of the housing is connected to the rotor by an axial shaft, and an eccentric received in a slot in the lever for providing a driving coupling between the lever and internal contact mechanism is located on the exterior surface of the rotor plate.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: July 29, 1997
    Assignee: Eaton Corporation
    Inventors: David Y. Tsai, Paul W. Lombard, Lucian J. Copeland, Denis J. Leveque, Michael T. Little
  • Electric switch with dynamic brake contact shared for making and breaking a power circuit
    Patent number: 5600107
    Abstract: A double pole single throw electric switch has normally closed contacts of one pole connected in a dynamic braking circuit with a motor load and normally open contacts connecting the motor to a source of power. A partial movable contact conductively connected to movable contacts of the normally open contacts is disposed in normally open position relative to one contact of the normally closed contacts to provide a parallel path through the switch for making and breaking the circuit to the power source.
    Type: Grant
    Filed: July 27, 1995
    Date of Patent: February 4, 1997
    Assignee: Eaton Corporation
    Inventor: David Y. Tsai