Patents by Inventor Qixiang Cai

Qixiang 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: 20250073643
    Abstract: A multi-element filtration vessel included spaced beams for supporting and/or aligning filtration elements from below. The filtration elements have bottom ends adapted to rest upon adjacent support beams and also to extend between them to form a cavity that can capture feed fluid and an aeration gas and conduct it into the filtration element. In another aspect, a multi-element filtration vessel has removable aerators mounted on a projection on the wall of the filtration vessel.
    Type: Application
    Filed: February 15, 2022
    Publication date: March 6, 2025
    Inventors: Steven D. Jons, Bie Li, Bin He, Liangzhou Fan, Shankhadeep Das, Bill Qixiang Cai
  • Patent number: 8894048
    Abstract: A gas diffuser including a grid of aeration pipes spaced apart and in parallel alignment within a horizontal plane is provided. The aeration pipes have improved discharge hole placement along their lengths and around their circumferences to provide improved performance and reduced fouling of membrane filtration systems associated therewith.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: November 25, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Qixiang Cai, Ning Chai, Steven J. Gluck, Billy G. Smith, Chengfeng Wang, Quan Yuan
  • Publication number: 20140191424
    Abstract: A gas diffuser comprises a grid of aeration pipes spaced apart and in parallel alignment with each other within a common horizontal plane and a manifold in fluid communication with the aeration pipes. A given aeration pipe (12) includes: a length (L) extending between two ends and defining an axis (Z), a hydrodynamic diameter (Dh),an elliptical cross-sectional area defining a vertical plane comprising a vertical (Y) and horizontal (X) axis intersecting through a center (C) which are perpendicular to axis (Z), an outer circumference defined by a first arc (20) comprising 30° located below the (X) axis and bisected by the (Y) axis, and a second arc (22) comprising 330° which is non-overlapping with the first arc (20.
    Type: Application
    Filed: July 9, 2013
    Publication date: July 10, 2014
    Inventors: Qixiang Cai, Ning Chai, Steven J. Gluck, Billy G. Smith, Chengfeng Wang, Quan Yuan