Patents by Inventor Tiandi Zhuang

Tiandi Zhuang 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).

  • Method of determining residual flocculant in effluent of an industrial clarification process
    Patent number: 10782241
    Abstract: A method of detecting free flocculant polymer having a net charge present in an aqueous phase of a multi-phase substance is provided. The multi-phase substance comprises a solid phase, an organic phase, and the aqueous phase. The method comprises separating the solid phase from the multi-phase substance to form a dual phase top liquid comprising the organic phase and the aqueous phase; separating the organic phase from the dual phase top liquid, leaving the aqueous phase; combining the free flocculant polymer in the aqueous phase and a dye having an opposite net charge than that of the free flocculant polymer, thereby causing a spectroscopically observable change in the aqueous phase; and analyzing the aqueous phase via spectrometry to determine the concentration of the free flocculant polymer in the multi-phase substance.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: September 22, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Hua Zheng, Xiaodong Huang, Tiandi Zhuang, Lan Xiao, Patrick G. Murray, Philip M. Eastin
  • Method of Determining Residual Flocculant in Effluent of an Industrial Clarification Process
    Publication number: 20190033222
    Abstract: A method of detecting free flocculant polymer having a net charge present in an aqueous phase of a multi-phase substance is provided. The multi-phase substance comprises a solid phase, an organic phase, and the aqueous phase. The method comprises separating the solid phase from the multi-phase substance to form a dual phase top liquid comprising the organic phase and the aqueous phase; separating the organic phase from the dual phase top liquid, leaving the aqueous phase; combining the free flocculant polymer in the aqueous phase and a dye having an opposite net charge than that of the free flocculant polymer, thereby causing a spectroscopically observable change in the aqueous phase; and analyzing the aqueous phase via spectrometry to determine the concentration of the free flocculant polymer in the multi-phase substance.
    Type: Application
    Filed: July 27, 2018
    Publication date: January 31, 2019
    Applicant: Ecolab USA Inc.
    Inventors: Hua Zheng, Xiaodong Huang, Tiandi Zhuang, Lan Xiao, Patrick G. Murray, Philip M. Eastin