Patents by Inventor Peishan Zhong

Peishan Zhong 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).

  • MULTILAYER HOLLOW FIBRE MEMBRANES
    Publication number: 20190209973
    Abstract: Multilayer single-bore hollow fibre membranes M or multilayer multi-bore hollow fibre membranes M for ultrafiltration applications are disclosed, comprising at least one hollow fibre membrane substrate S comprising a polymer bulk material P1 and at least one functional layer F disposed on at least the inner surface of the hollow fibre membrane substrate S, wherein the functional layer F comprises at least one polymer P2. The hollow fibre membranes may be used in ultrafiltration methods and filtration modules, in particular for the treatment of waste water.
    Type: Application
    Filed: August 25, 2017
    Publication date: July 11, 2019
    Applicant: BASF SE
    Inventors: Natalia WIDJOJO, Menno BOS, Martin HEIJNEN, Peishan ZHONG, Martin WEBER
  • NOVEL MEMBRANES
    Publication number: 20160158707
    Abstract: Membrane comprising a carrier and a rejection layer, wherein said membrane is a multiple channel membrane. The rejection layer is a polyamide layer. Process for making multiple channel membranes coated with a polyamide layer.
    Type: Application
    Filed: June 27, 2014
    Publication date: June 9, 2016
    Applicant: BASF SE
    Inventors: Martin HEIJNEN, Martin WEBER, Claudia STAUDT, Marc JUNG, Natalia WIDJOJO, Peishan ZHONG, Jia Le LOW
  • Ultrafiltration membranes fabricated from sulfonated polyphenylenesulfones
    Patent number: 9199205
    Abstract: The present invention is directed to ultrafiltration membranes comprising a membrane substrate layer (S) based on a sulfonated polyaryleneethersulfone polymer and to a method for their preparation. Furthermore, the present invention is directed to ultrafiltration processes making use of said membrane.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: December 1, 2015
    Assignees: BASF SE, National University of Singapore
    Inventors: Martin Weber, Christian Maletzko, Natalia Widjojo, Peishan Zhong, Tai-Shung Chung
  • High performance positively charged composite membranes and their use in nanofiltration processes
    Patent number: 9120062
    Abstract: The present invention is directed to positively charged nanofiltration (NF) membranes comprising a substrate layer (S) based on a sulfonated polymer and a positively charged film layer (F) on top of said substrate, and to a method for their preparation. Furthermore, the present invention is directed to nanofiltration processes making use of said composite membrane.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: September 1, 2015
    Assignees: BASF SE, NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: Martin Weber, Christian Maletzko, Bernd Trotte, Peishan Zhong, Tai-Shung Chung
  • HIGH PERFORMANCE POSITIVELY CHARGED COMPOSITE MEMBRANES AND THEIR USE IN NANOFILTRATION PROCESSES
    Publication number: 20130306551
    Abstract: The present invention is directed to positively charged nanofiltration (NF) membranes comprising a substrate layer (S) based on a sulfonated polymer and a positively charged film layer (F) on top of said substrate, and to a method for their preparation. Furthermore, the present invention is directed to nanofiltration processes making use of said composite membrane.
    Type: Application
    Filed: April 19, 2013
    Publication date: November 21, 2013
    Applicants: National University of Singapore, BASF SE
    Inventors: Martin Weber, Christian Maletzko, Bernd Trotte, Peishan Zhong, Tai-Shung Chung
  • ULTRAFILTRATION MEMBRANES FABRICATED FROM SULFONATED POLYPHENYLENESULFONES
    Publication number: 20130277318
    Abstract: The present invention is directed to ultrafiltration membranes comprising a membrane substrate layer (S) based on a sulfonated polyaryleneethersulfone polymer and to a method for their preparation. Furthermore, the present invention is directed to ultrafiltration processes making use of said membrane.
    Type: Application
    Filed: April 19, 2013
    Publication date: October 24, 2013
    Applicants: National University of Singapore, BASF SE
    Inventors: Martin Weber, Christian Maletzko, Natalia Widjojo, Peishan Zhong, Tai-Shung Chung