Patents by Inventor Xiang Mao

Xiang Mao 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).

  • Patent number: 10364165
    Abstract: The present invention provides a method for generating hydroxyl radicals and removing organic pollutants in water by utilizing an organic membrane. The inventive method generates hydroxyl radicals by adopting a nitrocellulose membrane as a photocatalytic material, placing the nitrocellulose membrane in water, illuminating with the sun or a sunlamp having a wavelength above 280 nm as a light source, and causing the nitrocellulose membrane to undergo a photochemical reaction at the membrane surface, and the generation rate of hydroxyl radicals can be achieved by adjusting the surface area of the membrane and a light intensity. The generated hydroxyl radicals can remove phenol, bisphenol A, thiamphenicol and other typical organic pollutants in water very well.
    Type: Grant
    Filed: June 25, 2016
    Date of Patent: July 30, 2019
    Assignee: HENAN POLYTECHNIC UNIVERSITY
    Inventors: Chao Tai, Jiaping She, Shao Dong Zhang, Tong Qian Zhao, Dang Yu Song, Lei Feng, Yu Xiang Mao, Yong An Qi, Guo Cheng Zhang, Li Jun Zhang, Juan Wang
  • Publication number: 20180162747
    Abstract: The present invention provides a method for generating hydroxyl radical and removing organic pollutants in water by utilizing an organic membrane. The inventive method generates hydroxyl radical by adopting a nitrocellulose membrane as a photocatalytic material, placing the nitrocellulose membrane in water, illuminating with the sun or a sunlamp having a wavelength above 280 nm as a light source, and causing the nitrocellulose membrane to undergo a photochemical reaction at the membrane surface, and the generation rate of hydroxyl radical can be achieved by adjusting the surface area of the membrane and a light intensity. The generated hydroxyl radical can remove phenol, bisphenol A, thiamphenicol and other typical organic pollutants in water very well.
    Type: Application
    Filed: June 25, 2016
    Publication date: June 14, 2018
    Applicant: HeNan Polytechnic University
    Inventors: Chao TAI, Shao Dong ZHANG, Tong Qian ZHAO, Dang Yu SONG, Lei FENG, Yu Xiang MAO, Yong An QI, Guo Cheng ZHANG, Li Jun ZHANG, Juan WANG
  • Patent number: 9751761
    Abstract: The present invention relates to an iron chalcogenide nanocomposite with photoluminescent properties. The present invention also relates to a method for preparing the iron chalcogenide nanocomposite. The method includes (a) dissolving a Fe precursor in an organic solvent to form a Fe solution, (b) dissolving a chalcogen powder or a chalcogen precursor in an organic solvent to form a chalcogen solution, (c) dropwise injecting the Fe solution into the chalcogen solution to prepare a mixture solution in which an iron chalcogenide is formed, and (d) purifying the iron chalcogenide from the mixture solution.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: September 5, 2017
    Assignee: PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Jae-Beom Lee, Xiang Mao
  • Publication number: 20160280543
    Abstract: The present invention relates to an iron chalcogenide nanocomposite with photoluminescent properties. The present invention also relates to a method for preparing the iron chalcogenide nanocomposite. The method includes (a) dissolving a Fe precursor in an organic solvent to form a Fe solution, (b) dissolving a chalcogen powder or a chalcogen precursor in an organic solvent to form a chalcogen solution, (c) dropwise injecting the Fe solution into the chalcogen solution to prepare a mixture solution in which an iron chalcogenide is formed, and (d) purifying the iron chalcogenide from the mixture solution.
    Type: Application
    Filed: September 10, 2013
    Publication date: September 29, 2016
    Inventors: Jae-Beom LEE, Xiang MAO
  • Patent number: 5742730
    Abstract: The system controls one or more VCRs to perform various operations including rapid and accurate tape repositioning from any point to any other point utilizing time codes and VCR performance data. They system includes the ability to encode, record, and reproduce a video signal with time codes and other information such as text commentary, directories to the tape content and VCR commands. Tapes prepared on any implementation of the system can be positioned on any other implementation except that the copying process must translate as appropriate between different signal formats (NTSC, PAL, SECAM), tape formats (VHS, Video 8, etc.) and encoding systems. The system includes a method for characterizing the tape transport performance of individual VCRs in the various tape transport modes including fast forward and rewind and during transitions between transport modes.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: April 21, 1998
    Inventors: David A. Couts, Richard B. McMurray, Xiang Mao