Patents by Inventor Ralf Mar

Ralf Mar 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 regenerating a filter aid
    Patent number: 8394279
    Abstract: Methods for regenerating filter aids which comprise inorganic, natural or semisynthetic filter aids. The method comprises subjecting the filter aid to a first treatment with an aqueous alkaline solution, treating the filter aid with enzymes, treating the filter aid with a surfactant, and subjecting the filter aid a second treatment with the aqueous alkaline solution. The enzyme treatment and the surfactant treatment steps may be carried out simultaneously or in any order.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: March 12, 2013
    Assignee: BASF SE
    Inventors: Helmut Meffert, Marianna Pierobon, Tobias Petsch, Julia Brodersen, Hermann Josef Feise, Ates Erk, Jörg Kreβ, Ralf Mar, Ralf Lachmuth, Robert Bayer
  • Method for regenerating an auxiliary filtering agent
    Patent number: 7993533
    Abstract: Processes comprising: (i) providing a filter aid comprising a co-extrudate of a water-insoluble polyvinylpyrrolidone and a thermoplastic polymer, (ii) treating the filter aid with aqueous alkali; (iii) subsequently treating the filter aid with an enzyme; and (iv) subsequently thereto carrying out a second treatment with aqueous alkali, to provide a regenerated filter aid, and uses therefor.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: August 9, 2011
    Assignee: BASF SE
    Inventors: Helmut Meffert, Marianna Pierobon, Tobias Petsch, Julia Brodersen, Hermann Josef Feise, Ates Erk, Jörg Kreβ, Ralf Mar, Robert Bayer
  • METHOD FOR REGENERATING A FILTER AID
    Publication number: 20100176069
    Abstract: Methods for regenerating filter aids which comprise inorganic, natural or semisynthetic filter aids. The method comprises subjecting the filter aid to a first treatment with an aqueous alkaline solution, treating the filter aid with enzymes, treating the filter aid with a surfactant, and subjecting the filter aid a second treatment with the aqueous alkaline solution. The enzyme treatment and the surfactant treatment steps may be carried out simultaneously or in any order.
    Type: Application
    Filed: March 14, 2008
    Publication date: July 15, 2010
    Applicant: BASF SE
    Inventors: Helmut Meffert, Marianna Pierobon, Tobias Petsch, Julia Brodersen, Hermann Josef Feise, Ates Erk, Jörg Kress, Ralf Mar, Ralf Lachmuth, Robert Bayer
  • METHOD FOR REGENERATING AN AUXILIARY FILTERING AGENT
    Publication number: 20090291164
    Abstract: Processes comprising: (i) providing a filter aid comprising a co-extrudate of a water-insoluble polyvinylpyrrolidone and a thermoplastic polymer; (ii) treating the filter aid with aqueous alkali; (iii) subsequently treating the filter aid with an enzyme; and (iv) subsequently thereto carrying out a second treatment with aqueous alkali, to provide a regenerated filter aid, and uses therefor.
    Type: Application
    Filed: September 27, 2007
    Publication date: November 26, 2009
    Applicant: BASF SE
    Inventors: Helmut Meffert, Marianna Pierobon, Tobias Petsch, Julia Brodersen, Hermann Josef Feise, Ates Erk, Jorg Kress, Ralf Mar, Robert Bayer