Patents by Inventor Zhiguo Yuan

Zhiguo Yuan 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: 11366855
    Abstract: Techniques for searching documents are described. An exemplary method includes receiving a document search query; querying at least one index based upon the document search query to identify matching data; fetching the identified matched data; determining one or more of a top ranked passage and top ranked documents from the set of documents based upon one or more invocations of one or more machine learning models based at least on the fetched identified matched data and the document search query; and returning one or more of the top ranked passage and the proper subset of documents.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: June 21, 2022
    Assignee: Amazon Technologies, Inc.
    Inventors: Jean-Pierre Dodel, Zhiheng Huang, Xiaofei Ma, Ramesh M. Nallapati, Krishnakumar Rajagopalan, Milan Saini, Sudipta Sengupta, Saurabh Kumar Singh, Dimitrios Soulios, Ankit Sultania, Dong Wang, Zhiguo Wang, Bing Xiang, Peng Xu, Yong Yuan
  • Patent number: 11198632
    Abstract: A method for treating a sludge derived from sewage or wastewater, the method comprising subjecting the sludge to a treatment step at a pH of 8.9 or greater and a free ammonia (FA) content of 100 mg NH3—N/L or greater. The treated sludge may be fed to a bioreactor to produce methane.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: December 14, 2021
    Assignee: THE UNIVERSITY OF QUEENSLAND
    Inventors: Qilin Wang, Zhiguo Yuan, Haoran Duan, Wei Wei
  • Publication number: 20200345500
    Abstract: A tissue engineering meniscal composite scaffold (100) and a preparation method thereof. The meniscal composite scaffold (100) includes: a scaffold (110), wherein the scaffold (110) is C-shaped and has a shape which is consistent with the original shape of the meniscus to be regenerated, the scaffold (110) comprises a plurality of first degradable polymer fibers (111) extending along the circumferential direction of the scaffold (110) and a plurality of second degradable polymer fibers (112) extending along the radial direction of the scaffold (110), and the first degradable polymer fibers (111) form a multilayer intersection with the second degradable polymer fibers (112) and thereby generating a frame structure having a plurality of first apertures; and a matrix material (120) composited inside the plurality of first apertures of the scaffold (110) to form a meniscal composite scaffold (100) having a plurality of second apertures.
    Type: Application
    Filed: May 16, 2019
    Publication date: November 5, 2020
    Inventors: Quanyi GUO, Weimin GUO, Shibi LU, Shuyun LIU, Xiang SUI, Jingxiang HUANG, Mingxue CHEN, Zhenyong WANG, Shuang GAO, Zhiguo YUAN
  • Publication number: 20200331788
    Abstract: A method for treating a sludge derived from sewage or wastewater, the method comprising subjecting the sludge to a treatment step at a pH of 8.9 or greater and a free ammonia (FA) content of 100 mg NH3—N/L or greater. The treated sludge may be fed to a bioreactor to produce methane.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 22, 2020
    Inventors: Qilin WANG, Zhiguo YUAN, Haoran DUAN, Wei WEI
  • Publication number: 20180118588
    Abstract: A method for controlling the activity of sulfate reducing bacteria or methanogenic archaea (or both) in environments containing such organisms comprising treating the environment with free nitrous acid (HNO2) or with a solution containing nitrite (NO2?) having a pH of less than 7 or by adding nitrite to the environment and having a pH of less than 7 in the environment. The method can also disrupt biofilms.
    Type: Application
    Filed: December 18, 2017
    Publication date: May 3, 2018
    Inventors: Zhiguo Yuan, Guangming Jiang, Oriol Gutierrez Garcia-Moreno
  • Publication number: 20160122215
    Abstract: The present invention provides a process for reducing the start-up time of an aerobic granular sludge reactor, said process comprising starting said reactor with an active biomass comprising fragmented aerobic sludge granules.
    Type: Application
    Filed: September 30, 2015
    Publication date: May 5, 2016
    Applicant: Liquid Waste Treatment Systems Limited
    Inventors: Zhiguo Yuan, Maria Teresa Pijuan Vilalta, Michael Russel Johns, Susan Diane McDougald
  • Patent number: 9242883
    Abstract: A method for treating a sludge to be fed to a bioreactor for treating wastewater, or an anaerobic or aerobic sludge digester, the method comprising contacting the sludge with free nitrous acid.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: January 26, 2016
    Assignee: THE UNIVERSITY OF QUEENSLAND
    Inventor: Zhiguo Yuan
  • Publication number: 20140202956
    Abstract: A method for treating a sludge to be fed to a bioreactor for treating wastewater, or an anaerobic or aerobic sludge digester, the method comprising contacting the sludge with free nitrous acid.
    Type: Application
    Filed: June 22, 2012
    Publication date: July 24, 2014
    Applicant: THE UNIVERSITY OF QUEENSLAND
    Inventor: Zhiguo Yuan
  • Publication number: 20130168329
    Abstract: A method for controlling the activity of sulfate reducing bacteria or methanogenic archaea (or both) in environments containing such organisms comprising treating the environment with free nitrous acid (HNO2) or with a solution containing nitrite (NO2?) having a pH of less than 7 or by adding nitrite to the environment and having a pH of less than 7 in the environment. The method can also disrupt biofilms.
    Type: Application
    Filed: April 27, 2011
    Publication date: July 4, 2013
    Applicant: The University of Queensland
    Inventors: Zhiguo Yuan, Guangming Jiang, Oriol Gutierrez Garcia-Moreno
  • Publication number: 20130075327
    Abstract: The present invention provides a process for reducing the start-up time of an aerobic granular sludge reactor, said process comprising starting said reactor with an active biomass comprising fragmented aerobic sludge granules.
    Type: Application
    Filed: March 3, 2011
    Publication date: March 28, 2013
    Applicant: Liquid Waste Treatment Systems Limited
    Inventors: Zhiguo Yuan, Maria Teresa Pijuan Vilalta, Michael Russel Johns, Susan Diane McDougald