Patents by Inventor Zhenxiao Cai

Zhenxiao Cai 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).

  • Publication number: 20210039026
    Abstract: A treatment module including a housing having an input port and an output port; a plurality of treatment members, each treatment member having a skeleton and a mesh material provided over the skeleton, the mesh material being joined to the skeleton at one or more portions of the skeleton; and a layer of particles formed over a first side of the mesh material, the layer having pores of sufficient size to enable a fluid to flow through the layer.
    Type: Application
    Filed: October 14, 2020
    Publication date: February 11, 2021
    Inventors: Mark BENJAMIN, Zhenxiao CAI, Alexander VETROVS, Bolun WANG
  • Publication number: 20200290014
    Abstract: A method for preparing a nano-enabled activated carbon block, a nano-enabled activated carbon block produced by the method, a household water filtration system comprising the nano-enabled activated carbon block, and a method for filtering tap water using the household water filtration system are provided. The method includes contacting a solution including a metal(lic) precursor (e.g. a titanium compound and/or an iron compound and/or a zirconium compound) with activated carbon particles such that the solution fills pores of the activated carbon particles. The method further includes causing a metal (hydr)oxide (e.g. titanium dioxide and/or zirconium dioxide and/or iron oxide) to precipitate from the solution thereby causing metal oxide nanoparticles to become deposited within pores of the activated carbon particles. The method also includes preparing a nano-enabled activated carbon block from the activated carbon particles having metal oxide nanoparticles deposited within the pores thereof.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 17, 2020
    Inventors: Zhenxiao CAI, Scott A. MOLLEMA, Ariel J. ATKINSON, Kiril D. HRISTOVSKI, Jasmina S. MARKOVSKI, Paul K. WESTERHOFF
  • Publication number: 20160340217
    Abstract: A portable water treatment system selectively configurable between a portable configuration and a water treatment system configuration. The portable water treatment system includes multiple nest and stack containers. A flocculation container includes a manual valve component that interacts with a filter support to form a valve that controls flow of water. The filter system may include one or more rotatable biofoam filters, each with a restriction orifice to control flow rate and allow a biological community to colonize and develop on or in the filters. The filters can be rotated between a filter operating position and a filter maintenance position. The water treatment system may include a chlorination system that can handle a chlorine tablet that does not contain a stabilizer. The water treatment system may include a storage container with a carbon filter that removes chlorine from the water before being dispensed.
    Type: Application
    Filed: May 20, 2016
    Publication date: November 24, 2016
    Inventors: Roy W. Kuennen, Richard J. Weber, Terry L. Lautzenheiser, Ryan D. Schamper, Zhenxiao Cai, Kenny Ly
  • Patent number: 8070951
    Abstract: Metal oxide particles heated while immersed in water in a closed container are combined with membrane filtration to remove contaminants from water. The use of the heated particles reduces fouling of the membrane typically encountered when membranes alone are used to remove contaminants from water.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: December 6, 2011
    Assignee: University of Washington through its Center for Commercialization
    Inventors: Mark M. Benjamin, Yu-Jung Chang, Jaeshin Kim, Zhenxiao Cai
  • Publication number: 20090314714
    Abstract: Metal oxide particles heated while immersed in water in a closed container are combined with membrane filtration to remove contaminants from water. The use of the heated particles reduces fouling of the membrane typically encountered when membranes alone are used to remove contaminants from water.
    Type: Application
    Filed: June 18, 2009
    Publication date: December 24, 2009
    Applicant: WASHINGTON, UNIVERSITY OF
    Inventors: Mark M. Benjamin, Yu-Jung Chang, Jaeshin Kim, Zhenxiao Cai