Patents by Inventor Weiman Qian

Weiman Qian 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).

  • Pulsed power supply for plasma electrolytic deposition and other processes
    Patent number: 9018802
    Abstract: The invention disclosed is a pulsed power supply for plasma electrolytic deposition (PED) for generating pulsed direct current for controlled interruption of the arcing process of PED, comprising a power distribution and relay logic (PDRL) module; a positive AC/DC (alternating current/direct current) power module; a negative AC/DC power module; a power pulse output module; and a computer control and data acquisition module, wherein the power pulse output module further comprises a pulse controller and an insulated-gate bipolar transistor (IGBT) power switch, and wherein the PDRL module is operatively coupled to both the positive and negative AC/DC power modules and the respective positive and negative power modules are then operatively coupled to both the power pulse output module and the computer control and data acquisition module, and wherein the computer control and data acquisition module controls both the respective positive and negative power modules and the power pulse output module to generate pulsed
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: April 28, 2015
    Assignee: National Research Council of Canada
    Inventors: Jian Sun, Weiman Qian, Wei Qu, Shiqiang Hui
  • Novel Pulsed Power Supply For Plasma Electrolytic Deposition And Other Processes
    Publication number: 20120119591
    Abstract: The invention disclosed is a pulsed power supply for plasma electrolytic deposition (PED) for generating pulsed direct current for controlled interruption of the arcing process of PED, comprising a power distribution and relay logic (PDRL) module; a positive AC/DC (alternating current/direct current) power module; a negative AC/DC power module; a power pulse output module; and a computer control and data acquisition module, wherein the power pulse output module further comprises a pulse controller and an insulated-gate bipolar transistor (IGBT) power switch, and wherein the PDRL module is operatively coupled to both the positive and negative AC/DC power modules and the respective positive and negative power modules are then operatively coupled to both the power pulse output module and the computer control and data acquisition module, and wherein the computer control and data acquisition module controls both the respective positive and negative power modules and the power pulse output module to generate pulsed
    Type: Application
    Filed: July 6, 2010
    Publication date: May 17, 2012
    Inventors: Jian Sun, Weiman Qian, Wei Qu, Shiqiang Hui