Patents by Inventor Jens Stoll

Jens Stoll 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).

  • Method for improved removal of cations by means of chelating resins
    Patent number: 8440730
    Abstract: The present invention relates to a method for improved removal of cations, preferably alkaline earth metals, in particular calcium and barium, from aqueous solutions using chelating resins having aminomethylphosphonic acid groups and iminodimethylphosphonic acid groups having high dynamic absorption capacity for cations at a low residual content of the cations and high regeneration efficiency, and a markedly lengthened loading duration of the chelating resin, to the chelating exchangers themselves, and also to uses thereof.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: May 14, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventors: Reinhold Klipper, Stefan Neumann, Jens Stoll, Michael Schelhaas, Pierre Vanhoorne
  • Method for improved removal of cations by means of chelating resins
    Patent number: 8399528
    Abstract: The present invention relates to a method for improved removal of cations, preferably alkaline earth metals, in particular calcium and barium, from aqueous solutions using chelating resins having acetic acid and/or iminodiacetic acid groups having high dynamic absorption capacity for cations at a low residual content of the cations and high regeneration efficiency, to the chelating exchangers themselves, and also to uses thereof.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: March 19, 2013
    Assignee: LANXESS Deutschland GmbH
    Inventors: Reinhold Klipper, Stefan Neumann, Jens Stoll, Michael Schelhaas, Pierre Vanhoorne
  • METHOD FOR IMPROVED REMOVAL OF CATIONS BY MEANS OF CHELATING RESINS
    Publication number: 20110132844
    Abstract: The present invention relates to a method for improved removal of cations, preferably alkaline earth metals, in particular calcium and barium, from aqueous solutions using chelating resins having acetic acid and/or iminodiacetic acid groups having high dynamic absorption capacity for cations at a low residual content of the cations and high regeneration efficiency, to the chelating exchangers themselves, and also to uses thereof.
    Type: Application
    Filed: September 27, 2010
    Publication date: June 9, 2011
    Applicant: LANXESS DEUTSCHLAND GmbH
    Inventors: Reinhold Klipper, Stefan Neumann, Jens Stoll, Michael Schelhaas, Pierre Vanhoorne
  • METHOD FOR IMPROVED REMOVAL OF CATIONS BY MEANS OF CHELATING RESINS
    Publication number: 20110089116
    Abstract: The present invention relates to a method for improved removal of cations, preferably alkaline earth metals, in particular calcium and barium, from aqueous solutions using chelating resins having aminomethylphosphonic acid groups and iminodimethylphosphonic acid groups having high dynamic absorption capacity for cations at a low residual content of the cations and high regeneration efficiency, and a markedly lengthened loading duration of the chelating resin, to the chelating exchangers themselves, and also to uses thereof.
    Type: Application
    Filed: September 27, 2010
    Publication date: April 21, 2011
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Reinhold Klipper, Stefan Neumann, Jens Stoll, Michael Schelhaas, Pierre Vanhoorne
  • REMOVAL OF OXO ANIONS FROM WATER
    Publication number: 20110056887
    Abstract: The present invention relates to a process for removing oxo anions from water and aqueous solutions having a high proportion of silicate by means of a filter arrangement comprising at least one anion exchanger and at least one oxo anion-specific adsorber, and to a filter arrangement to be used for this purpose.
    Type: Application
    Filed: September 8, 2009
    Publication date: March 10, 2011
    Applicants: LANXESS DEUTSCHLAND GMBH, LANXESS CORPORATION
    Inventors: Stefan Neumann, Reinhold Klipper, Jens Stoll, Silivia Breuer, Sieglinde Trokowski, Brigitte Chudzik-Raeth, Wei-Hsin Chou, Phil Fatula, Tony Decola
  • Conditioning of ion exchangers for adsorption of oxoanions
    Patent number: 7708892
    Abstract: The present invention relates to the use of inorganic salts for increasing the adsorption of oxoanions and/or thioanalogues thereof to metal-doped ion exchangers, preferably to iron oxide/iron oxyhydroxide-containing ion exchangers, preferably from water or aqueous solutions, and also the conditioning of these metal-doped ion exchangers having increased adsorption behaviour toward oxoanions and/or thioanalogues thereof by using inorganic salts with the exception of amphoteric ion exchangers which have both acidic and basic groups as functional groups.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: May 4, 2010
    Assignee: LANXESS Deutschland GmbH
    Inventors: Reinhold Klipper, Michael Schelhaas, Stefan Neumann, Jens Stoll
  • Conditioning of ion exchangers for adsorption of oxoanions
    Publication number: 20080272055
    Abstract: The present invention relates to the use of inorganic salts for increasing the adsorption of oxoanions and/or thioanalogues thereof to metal-doped ion exchangers, preferably to iron oxide/iron oxyhydroxide-containing ion exchangers, preferably from water or aqueous solutions, and also the conditioning of these metal-doped ion exchangers having increased adsorption behaviour toward oxoanions and/or thioanalogues thereof by using inorganic salts with the exception of amphoteric ion exchangers which have both acidic and basic groups as functional groups.
    Type: Application
    Filed: June 6, 2007
    Publication date: November 6, 2008
    Inventors: Reinhold Klipper, Michael Schelhaas, Stefan Neumann, Jens Stoll