Patents by Inventor Uri Papouktchiev

Uri Papouktchiev 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).

  • Methods for improving filtration performance of hollow fiber membranes
    Patent number: 7378024
    Abstract: In accordance with the present invention, there are provided methods for improving performance of hollow fiber filtration membrane modules. Invention methods comprise a unique backwashing technique wherein the hollow fiber membranes within the module are pressurized with a gas on the feed side at specified times during the backwash. Periodic use of invention methods effectively removes fouling components from the hollow-fiber membranes, thereby providing stable permeability and low trans-membrane pressures, which results in an efficient and economic filtration process. In addition, there are provided methods for cleaning hollow fiber membranes and increasing filtrate flow rate through membranes.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: May 27, 2008
    Assignee: Hydranautics
    Inventors: Craig Bartels, Uri Papouktchiev
  • Methods for improving filtration performance of hollow fiber membranes
    Publication number: 20030150807
    Abstract: In accordance with the present invention, there are provided methods for improving performance of hollow fiber filtration membrane modules. Invention methods comprise a unique backwashing technique wherein the hollow fiber membranes within the module are pressurized with a gas on the feed side at specified times during the backwash. Periodic use of invention methods effectively removes fouling components from the hollow-fiber membranes, thereby providing stable permeability and low trans-membrane pressures, which results in an efficient and economic filtration process. In addition, there are provided methods for cleaning hollow fiber membranes and increasing filtrate flow rate through membranes.
    Type: Application
    Filed: December 18, 2002
    Publication date: August 14, 2003
    Applicant: Hydranautics
    Inventors: Craig Bartels, Uri Papouktchiev