Patents by Inventor Caikang (Elton) Gu

Caikang (Elton) Gu 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).

  • Sensor for measuring the concentration of a solvent or solute in a mixed solution system
    Patent number: 8988085
    Abstract: The invention described relates to an apparatus and method for measuring the concentration of a low molecular weight alcohol, in an aqueous liquid feed solution, comprising a first sensor including a hydrophilic capillary tube having an inner diameter, being disposed between two electrodes to form a first capacitor, a second sensor including a hydrophobic capillary tube having the same inner diameter as a capillary tube of the first sensor; said hydrophobic capillary tube having a hydrophobic coating on the inner diameter, being disposed between two electrodes to form a second capacitor, wherein the first hydrophilic and second hydrophobic sensors are dipped to the same depth in the aqueous solution to measure the solution concentration, means for measuring the capacitance of the two capacitors, and control means including a control circuit driven by a computer, wherein the difference in capacitance between the two capacitors is a measure of the concentration of the solution, independent of the depth of dippi
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: March 24, 2015
    Assignee: National Research Council of Canada
    Inventors: Jun Shen, Caikang (Elton) Gu, Jiujun Zhang, David P. Wilkinson, Haijiang Wang
  • Sensor for Measuring the Concentration of a Solvent or Solute in a Mixed Solution System
    Publication number: 20110291676
    Abstract: The invention described relates to an apparatus and method for measuring the concentration of a low molecular weight alcohol, in an aqueous liquid feed solution, comprising a first sensor including a hydrophilic capillary tube having an inner diameter, being disposed between two electrodes to form a first capacitor, a second sensor including a hydrophobic capillary tube having the same inner diameter as a capillary tube of the first sensor; said hydrophobic capillary tube having a hydrophobic coating on the inner diameter, being disposed between two electrodes to form a second capacitor, wherein the first hydrophilic and second hydrophobic sensors are dipped to the same depth in the aqueous solution to measure the solution concentration, means for measuring the capacitance of the two capacitors, and control means including a control circuit driven by a computer, wherein the difference in capacitance between the two capacitors is a measure of the concentration of the solution, independent of the depth of dippi
    Type: Application
    Filed: February 5, 2010
    Publication date: December 1, 2011
    Inventors: Jun Shen, Caikang (Elton) Gu, Jiujun Zhang, David P. Wilkinson, Haijiang Wang