Patents by Inventor Chuseng Liu

Chuseng Liu 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).

  • Chromoionophore and method of determining potassium ions
    Patent number: 7960181
    Abstract: The invention relates to methods of determining potassium ions in a sample, wherein the ions are contacted with a compound having chromophoric moiety and an ionophoric moiety, where the ionophoric moiety interacts with the potassium ions present in the sample, resulting in the chromophoric moiety changing its radiation absorption properties in the ultraviolet and visible regions of the spectrum. For example, a change in an intensity of an absorption maximum is measured and the ion concentration is determined accordingly.
    Type: Grant
    Filed: May 2, 2007
    Date of Patent: June 14, 2011
    Assignee: OPTI Medical Systems
    Inventors: Huarui He, Chao Lin, Neeta Raje, Chuseng Liu
  • CHROMOIONOPHORE AND METHOD OF DETERMINING POTASSIUM IONS
    Publication number: 20070259443
    Abstract: The invention relates to methods of determining potassium ions in a sample, wherein the ions are contacted with a compound having chromophoric moiety and an ionophoric moiety, where the ionophoric moiety interacts with the potassium ions present in the sample, resulting in the chromophoric moiety changing its radiation absorption properties in the ultraviolet and visible regions of the spectrum. For example, a change in an intensity of an absorption maximum is measured and the ion concentration is determined accordingly.
    Type: Application
    Filed: May 2, 2007
    Publication date: November 8, 2007
    Inventors: Huarui He, Chao Lin, Neeta Raje, Chuseng Liu
  • CHROMOIONOPHORE AND METHOD OF DETERMINING SODIUM IONS
    Publication number: 20070259444
    Abstract: The invention relates to methods of determining sodium ions in a sample, wherein the ions are contacted with a compound having chromophoric moiety and an ionophoric moiety, where the ionophoric moiety interacts with the sodium ions present in the sample, resulting in the chromophoric moiety changing its radiation absorption properties in the ultraviolet and visible regions of the spectrum. For example, a change in an intensity of an absorption maximum is measured and the ion concentration is determined accordingly.
    Type: Application
    Filed: May 2, 2007
    Publication date: November 8, 2007
    Inventors: Huarui He, Chao Lin, Neeta Raje, Chuseng Liu