Patents by Inventor Dung Van Chu

Dung Van Chu 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).

  • Combination ion-selective electrode with a replaceable sensing membrane
    Patent number: 6398931
    Abstract: An improved combination ion-selective electrode apparatus is provided that comprises an electrode body, a reference electrode, and an ion-sensing electrode. The reference electrode comprises a ion-permeable junction. A removable membrane cap contains a ion-selective membrane. The membrane cap can be removed from the ion-selective electrode apparatus without endangering the integrity of the reference electrode and is distinct from the ion-permeable junction. The membrane cap contains a removable ion-sensitive membrane that can be replaced if the ion-sensitive membrane fails to thereby place the combination ion-selective electrode apparatus back into service. Moreover, a single combination ion-selective electrode apparatus can be used to measure a variety of analyte ions by simple replacement of the membrane cartridge.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: June 4, 2002
    Assignee: Phoenix Electrode Company
    Inventors: Raymond Gary Burchette, Dung Van Chu, Peter F. Boyle