Patents by Inventor Zeyu Cai

Zeyu Cai 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).

  • Ratiometric device
    Patent number: 9835575
    Abstract: One example discloses a ratiometric device, including: a current source having a first current, a second current different from the first current, and a current-select program; a sensor device responsive to a gas and having a sensor-cold temperature T(cold,sens) in response to the first current and a sensor-hot temperature T(hot,sens) in response to the second current; a reference device having a reference-cold temperature T(cold,ref) in response to the first current and a reference-hot temperature T(hot,ref) in response to the second current; and wherein the ratiometric device includes a temperature difference ratio output based on T(cold,sens), T(hot,sens), T(cold,ref) and T(hot,ref).
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: December 5, 2017
    Assignee: ams International AG
    Inventors: Zeyu Cai, Michiel Pertijs, Robert Hendrikus Margaretha van Veldhoven, Kofi Afolabi Anthony Makinwa
  • RATIOMETRIC DEVICE
    Publication number: 20160109396
    Abstract: One example discloses a ratiometric device, including: a current source having a first current, a second current different from the first current, and a current-select program; a sensor device responsive to a gas and having a sensor-cold temperature T(cold,sens) in response to the first current and a sensor-hot temperature T(hot,sens) in response to the second current; a reference device having a reference-cold temperature T(cold,ref) in response to the first current and a reference-hot temperature T(hot,ref) in response to the second current; and wherein the ratiometric device includes a temperature difference ratio output based on T(cold,sens), T(hot,sens), T(cold,ref) and T(hot,ref).
    Type: Application
    Filed: October 16, 2014
    Publication date: April 21, 2016
    Inventors: Zeyu Cai, Michiel Pertijs, Robert Hendrikus Margaretha van Veldhoven, Kofi Afolabi Anthony Makinwa