Patents by Inventor Felix Hulten

Felix Hulten 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).

  • Treatment of polyaluminium compounds
    Publication number: 20030089661
    Abstract: The invention relates to a method for treating an aqueous polyaluminium compound solution comprising feeding a feed solution containing at least one polyaluminium compound to an ultrafiltration unit, separating a retentate fraction having a higher aluminium content than the feed solution from a permeate fraction having a lower content of aluminium than the feed solution. The invention also relates to an aqueous polyaluminium compound solution obtainable by the method and the use thereof as a flocculant or antiperspirant and/or treating water.
    Type: Application
    Filed: October 29, 2002
    Publication date: May 15, 2003
    Applicant: AKZO NOBEL N.V.
    Inventor: Felix Hulten
  • Method for water treatment
    Patent number: 5916447
    Abstract: A method for treatment of water in which an aqueous solution containing a freshly made polymerised iron substance is produced, the produced polymerised iron substance is aged sufficiently long to provide for efficient treatment of water, and the aqueous solution containing aged polymerised iron substance is added to the water to be treated.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: June 29, 1999
    Assignee: Eka Chemicals AB
    Inventors: Felix Hulten, Goran Sivertsson