Patents by Inventor Ruisheng Chang

Ruisheng Chang 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).

  • Use of micro-structured plate for controlling capacitance of mechanical capacitor switches
    Patent number: 9641174
    Abstract: Micro capacitive switches and methods of manufacturing micro capacitive switches at variable nominal capacitance value using micro-structures on the contact plates of the same dimension. In a preferred embodiment, a separately manufactured contact plate can be mounted to a movable magnet in order to be actuated to “on” and “off” state of the capacitive switch. Depending on the contact plate's surface condition, variable contact capacitance at “on” state can be precisely specified by geometrical properties of the micro-structures on the surface, such as the density, size and depth.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: May 2, 2017
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Mark Bachman, Guann-Pyng Li, Yang Zhang, Ruisheng Chang, Minfeng Wang, Sungjun Kim
  • Use of Micro-Structured Plate for Controlling Capacitance of Mechanical Capacitor Switches
    Publication number: 20120279845
    Abstract: Micro capacitive switches and methods of manufacturing micro capacitive switches at variable nominal capacitance value using micro-structures on the contact plates of the same dimension. In a preferred embodiment, a separately manufactured contact plate can be mounted to a movable magnet in order to be actuated to “on” and “off” state of the capacitive switch. Depending on the contact plate's surface condition, variable contact capacitance at “on” state can be precisely specified by geometrical properties of the micro-structures on the surface, such as the density, size and depth.
    Type: Application
    Filed: April 11, 2012
    Publication date: November 8, 2012
    Inventors: Mark Bachman, Guann-Pyng Li, Yang Zhang, Ruisheng Chang, Minfeng Wang, Sungjun Kim