Patents by Inventor Andreas Draesner

Andreas Draesner 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).

  • Ultrafiltration and microfiltration module and system
    Patent number: 6814861
    Abstract: A method and apparatus of purifying feedwater to remove impurities including suspended solids therefrom, the method suitable for using in-line water pressure to permeate water through hollow fiber membranes and to backflush the membranes to remove solids collected or deposited thereon.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: November 9, 2004
    Assignee: Zenon Environmental, Inc.
    Inventors: Hidayat Husain, Andreas Draesner, Michael Blair, Henry Behmann
  • Ultrafiltration and microfiltration module and system
    Patent number: 6589426
    Abstract: A method and apparatus of purifying feedwater to remove impurities including suspended solids therefrom, the method suitable for using in-line water pressure to permeate water through hollow fiber membranes and to backflush the membranes to remove solids collected or deposited thereon.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: July 8, 2003
    Assignee: Zenon Environmental Inc.
    Inventors: Hidayat Husain, Andreas Draesner, Michael Blair, Henry Behmann